Centimeter 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 liiiiliiiiliiiilfiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiiliiiil lomcusCl fijlsor ujOvu \(xp£M> A SELECTIVE MICROFILM EDITION PARTI (1850-1878) Thomas E. Jeffrey Microfilm Editor and Associate Editor Assistant Editors: Toby Appel Keith A. Nier Andre Millard Susan Schultz Assistant Editor Research Associates: Robert Rosenberg W. Bernard Carlson Student Assistants John Deasey Leonard De Graaf David Fowler Pamela Kwiatkowski Joseph P. Sullivan Barbara B. Tomblin Leonard S. Reich, Associate Director and Associate Editor Sponsors Rutgers. The State University of New Jersey National Park Service. Edison National Historic Site New Jersey Historical Commission Smithsonian Institution University Publications of America Frederick. Maryland 1985 Copyright * 1985 by Rutgers, The State University All Rights Reserved. Mo part of this publication including any portion of the guide and index or of the microfilm may be reproduced, stored in a retrieval system, or transmitted in any form by any means— graphic, electronic, mechanical, or chemical, including photocopying, recording or taping, or information storage and retrieval systems— without written permission of Rutgers, The State University of Mew Jersey, Mew Brunswick. Mew Jersey. The original documents in this edition are from the archives at the Edison National Historic Site at West Orange, Mew Jersey. BOARD OF SPONSORS Rutgers, The State University of New Jersey Edward J. Bloustein T. Alexander Pond Tilden G. Edelstein Richard P. McCormick James Kirby Martin New Jersey Historical Commission Bernard Bush Howard Green National Park Service, Edison National Historic Site Roy W. Weaver Edward J. Pershey William Binnewies Lynn Wightman Elizabeth Albro Smithsonian Institution Brooke Hindle Bernard Finn EDITORIAL ADVISORY BOARD James Brittain, Georgia Institute of Technology Alfred D. Chandler, Harvard University Neil Harris, University of Chicago Thomas Parke Hughes. University of Pennsylvania Arthur Link, Princeton University Nathan Reingold. Smithsonian Institution Robert C. Schofield. Iowa State University CORPORATE ASSOCIATES William C. Hittinger (chairman), RCA Corporation •Arthur M. Bueche. General Electric Company Edward J. Bloustein, Rutgers, The State University of N J. Cees Bruynes, North American Philips Corporation Paul J. Christiansen, Charles Edison Fund Philip F. Dietz, Westinghouse Electric Corporation Paul Lego, Westinghouse Electric Corporation Roland W. Schmitt, General Electric Corporation Robert I. Smith, Public Service Electric and Gas Company Harold W. Sonn, Public Service Electric and Gas Company Morris Tanenbaum, AT&T •Deceased FINANCIAL CONTRIBUTORS PRIVATE FOUNDATIONS Alfred P. Sloan Foundation Charles Edison Fund The Hyde and Watson Foundation Geraldine R. Dodge Foundation PUBLIC FOUNDATIONS National Science Foundation National Endowment for the Humanities PRIVATE CORPORATIONS AND INDIVIDUALS Alabama Power Company Amerada Hess Corporation AT&T Association of Edison illuminating Companies Battelle Memorial Institute Foundation The Boston Edison Foundation Cabot Corporation Foundation Carolina Power and Light Company Consumers Power Company Coming Glass Works Foundation Duke Power Company Edison Electric Institute Exxon Corporation General Electric Foundation Gould Inc. Foundation Gulf States Utilities Company The Institute of Electrical & Electronics Engineers International Brotherhood of Electrical Workers Iowa Power and Light Company Mr. and Mrs. Stanley H. Katz Matsushita Electric Industrial Co., Ltd. McGraw-Edison Company Middle South Services, Inc. Minnesota Power New Jersey Bell Telephone Company New York State Electric & Gas Corporation North American Philips Corporation Philadelphia Electric Company Philips International B.V. Public Service Electric and Gas Company RCA Corporation Robert Bosch GmbH Savannah Electric and Power Company Schering Plough Foundation Texas Utilities Company Thomson-Brandt Transamerica Delaval Inc. Westinghouse Educational Foundation Wisconsin Public Service Corporation PUBLICATION AND MICROFILM COPYING RESTRICTIONS Reel duplication of the whole or of any part of this film is prohibited. In lieu of transcripts, however, enlarged photocopies of selected items contained on these reels may be made in order to facilitate research. A Note on the Sources The pages which were microfilmed forthis collection are in generally good condition in the original. There are some pages, however, which due to age are lighter than normal. Additionally, because some volumes are very large and have been bound tightly and cannot be un¬ bound, there are intermittent occurrences of slight dis- tortion of the edges of a small percentage of the pages. We have made every technical effort to ensure complete legibility of each and every page. TELEPHONE INTERFERENCES Jhe EdLson National Historic Site has seven bound volumes and one pamphlet of Patent Office proceedings relating to conflicting claims over who invented the telephone. Four of these volumes contain the record of a group of interferences entitled Cases A through L and Case No. 1. The disputant parties were Thomas Edison, Alexander Graham Bell, Elisha Gray, A.E. Doibear, J.W McDonough, George B. Richmond, William L. Voelker, J.H. Irwin, and Francis Blake, 3r. Although Edison's preliminary statements were filed in printed in*! 881 teStim0ny WaS not taken until 188°- This record was The first volume contains Edison's preliminary statements and the depositions of Edison and his witnesses. The second volume contains Edison's exhibits, including photo-lithographs of laboratory drawings, patents and patent applications, and newspaper and journal articles. The schrZSnlaHVLeRhj-bit num^rs corresponding to a page/volume numbering «rf,h w- d.by E*son and his patent attorney Lemuel W. Serrell in 188C) wennccd;M°nS tfchnlcal no*:S and drawings were numbered and examined for possible inclusion as exhibits in these interferences. Many of the documents in this numbered series were not selected as exhibits; they remain in the archive at ENHS. (See Unbound Notebooks, Volumes 8-18.) !n addl.ti°n ^ the two volumes of testimony and exhibits for Edison, thare u u-thlId volume> containing preliminary statements, depositions, and exhibits for Bell, Voelker, Irwin, Gray, Doibear, McDonough, and Blake; and a fourth volume, containing briefs for Beil and Blake by attorneys Chauncey Smith and James 3. Storrow. Only the two Edison volumes have been filmed in their entirety. However, the tables of contents for the other two volumes have been filmed, along with those portions of the briefs for Bell and Blake which attorneys6 ^ 'SSUeS and Edison's case from the viewpoint of the opposing Another volume entitled U.S. Patent Office. Miscellaneous interferences of T.A. Edison contains four documents relating to appeals taken in 1883-1884. Three of these documents are briefs for Edison; the fourth is the deasion of the Examiners-in-Chief in the appeal of Cases A, tt, C, D, E, F, G, I, J, L, and No. 1. , , Jwo additional volumes contain the records of interference cases 2 and 3 (involving Edison, Blake, and Charles E. Chinnock) and cases 4, 5, 6, and BJ (involving Edison, Blake, and Edward L. Wilson). Each volume contains the preliminary statements, interfering specifications, and evidence of the disputant parties. The table of contents, preliminary statements, and interfering specifications for each volume have been filmed, as well as the evidence for Edison. The numbering system used in cases A through L and Case No. 1 was also employed for Edison’s exhibits in these cases. Many of the exhibits were also used in the earlier volume of Edison's exhibits; these have not been refilmed. However, the complete list of Edison's exhibits for the later interferences can be found in the table of contents. Finally, there is a printed argument for Edison in a telephone interference involving Edison, Amos E. Dolbear, and George L. Anders. This is the only documentation for this interference available at the Edison National Historic Site. The volumes have been filmed in the following order: 1. Evidence for Thomas A. Edison 2. Edison Exhibits 3. Evidence for Voelker, Irwin. Gray, McDonough, Blake and Bell 4. Briefs for Alexander Graham Bell and Francis Blake. 3r. 5. Miscellaneous Interferences [briefs for Edison and decision in appeals, 1883-1884] 6. Cases 2 and 3 7. Cases », 5, 6, and B3 Edison v. Dolbear v. Anders [argument for Edison] Telephone Interferences [Volume 1] Evidence for Thomas A. Edison This volume has been filmed in its entirety. SEEMING TELEPHONE • anti ( )i h< | .Wo. 1 ■ HVIOKNCK mil VjTOMAS A.'. KD1SON, FOR EDISON. JSMUEL W. EDISON’S RECORD INDEX TO VOL. 1. Parties to tlie several Intorferoncf Subject matter of Interference A. . « ' .. “ 0. D. E. Stipulation of counsel as to r No. 1. . . . . Pueliminauy Statements Interference A . . G of TnoMJi , . « 0 . •••••. D . E . «< . . J . '• . . • M .. . ; <• No. l . Notice of taking testimony. Admisssion of service . KttitfJ JPtKtcjsi A. G. Bell Elisiia Guay Tiios. A. Edison E. Behlinek Geo. B. Richmond A. E. Doi.heak J. W. MoDonougii W. L. Yoeliceu. PBE8ENT PAETIEB TO THESE SEVERAL INTEEFEEENOES. [Jan. 1, 1881.] A. G. Bell. — (A. Pollok, Washington, D. O., Attorney of Record.) Patent No. 174,465, March 7, 1876. Patent No. 186,787, Jan. 30, 1877. Elisha Gray. — (Baldwin, Iloplcins tfi Peyton, Washington, D. O., Attorneys of Record.) Application No. 1, filed Oct. 26, 1877. Application No. 2, filed Oct. 26, 1877. Model filed Deo. 4, 1877. .. No. 3, « •' » «• « “ “ “ «> Application No. 4, filed Jau. 17, 1878. Tiiomas A. Edison. — (A. IV. Sorrell, Reio York, Attorney of Record.) Application No. 130, filed April 27, 1877. \ " Ul, “ July 20, 1877. // «• “ 144, <■ Sept. 5, 1877. ■ •• “ 145, <• Deo. 13, 1877. «< •< 148, “ Doe. 24, 1877. Telephone Interferences, A, B, C, D, E, F, G, I, J, L, M. Emile Berliner. — (A. Pollok, Washington, D. O., Attorney of Record.) Application filed Juno 4, 1877. Geo. B. Richmond. — ( Geo. II'. Dyer, Washington, B. C., Attorney of Record.) Application filed Aug. 24, 1877. A. E. Doliikau. — ( F. L. Rope, 32 Park Place, JV". lr., Attorney of Record ; J. L. Norris, Washington, B. G., Associate.) Application filed Oct. 31, 1877. J. W. McDonough. — ( Gridley <C Ob., Chicago, 111., Attorneys of Record. ) Application filed April 10, 187G. W. L. Voelicek. — (R. B. 0. Smith, Washington, D. C., Attor¬ ney of Record.) Application filed May 19, 1879. Tlicso intci Terences wore declared by oflico lollor of March 2G, 1878. By office lelter of May 1, 1879, award of priority was inudo l=‘""’t Richmond upon his own statement in ensos A, B, D, E, G> "ni1 J ! 110 "'"s continued in case G. Said iiiterfcrcnccs wero revised and consolidated by office letter of May 27, 1879, in cousc- picncc of the decision of the Commissioner reported in the Official Gazette of May 13, 1879, as Gray el at. v. Bell, whereby ease II was consolidated with and to ho known as ease F, and K and I as [. By office lotto.- of-, Inly 29, 1879, priority of invention was 11 ,u1l1 o' » t Holcombe, and lie was dropped from A, E, F, G , j. By Oflico letter of Dee. 29, 1879, W. L. Voelkcr was included n interferences A and B. E. Berliner was originally included in and B, and was dropped therefrom by oflico letter of Sept. 3, .880, upon concession filed by him in favor of Boll j ho continues n M. Richmond took no proof. SUBJECT-MATTER. Inteiipeiibnce A. Voelkcr v. Bolbear v. Gray (I) v. Edison (130) v. Bell (174,405). “The hcrcinhofore-descrihod art of traiiRniiiit.w* _ _ _ .i • l senos of olcetrical wavos or vibrations, precisely correspond- their intervals of succession and rolutivo amplitudes to the son waves which are to bo reproduced at tho receiving station oi ns, so that oral conversations or sounds of any description innj cgrapiiicully transmitted.” [Gray’s 1st claim.] s is substantially the method spooifiud in Boll’s fifth claim, anti cribcd in tho applications of Edison, Dolboar and Voolker. Vbellcer v. Gray (1) v. Edison (130) v. Bell (174,4G5). lie liercinbcforo-dcscnbcd improvement in tho art of trnnsmit- ocal sounds or spokon words telegraphically, which consists it ing upon tho lino through tho medium of n varying resistance, ie impulses corresponding to tho vibrations of a diaphragm ted by tiio movements of tho air produced by a spokon word.’ r’s 2d claim.] s is substantially described in tho applications of Boll and a. Voclkcr’s 1st claim. ray (2) v. Edison (144) v. Richmond v. Bell (174,405). t. Tho transmitter consisting of tho combination in an electric of n diaphragm and a liquid or equivalent substauco of high nco whereby tho vibrations of the diaphragm cause variations resistance of tho electric circuit, and consequently in tho til of currant traversing said circuit.” [Grny’s 1st claim.] i is described in tho applications of Edison and Richmond, and of Boll. . In a tolegraph st eat oporated by sound, tho combina- ilh tho diaphragm of two or moro oloctrodos placod in olec- 0 liquid and operating to incrcaso and dccrcaso the rosistanco electric circuit by tho inovoinont dorived from tho diaphragm.” Hi’s 1st claim.] is described in the applications of Richmond and Gray, and itnnlinlly suggested in Boll’s patout. TELEPHONE INTERFERENCES. "In itn electro-hydro ndjiistublo tuljo, witln'n v immersed, ns set forth.’ Gray (2) v. Edison (14-1). telephone, the fluid-holding vertically iich the ends of the platinum points nro Substantially described mid shown lu s niiplicalion (No. 144), and described in Gray (2). Edison (145) v. Gray (3) v. Dolbear v. Bell (174,405). "In an ncoustio telegraph, an armature plate, llio olectro-imnrnot for the same, and a closed circuit passing from the helix of such electro. magnet to the sourco of undtilnlory electric onergy.” This is the subject-matter of Edison’s third claim,' and is' substan¬ tially described in the other applications and the patent involved. Dolbmr v. Gray (1) v. Bell (174,405). 1st. "A telephonic transmitter consisting of a coil of wiro one or ...ore magnets and a disk, or diaphragm so arranged relative ’to each Othu that a motion oi the diaphragm shall induce in the coil of wiro Igliets?’’ ,U°liVC f,,rC0 iB Vi,'“'° °f 11,0 I,roac“‘!0 °f H'o magnet or Dii:i.!Lr?Stn"tin"iy ‘l0SC1'a,Ct, n,ltI 8*‘°'vn »> npplications of llotbear and Gray, and patent of Bell. ^ oomliii.ntion in one circuit of two or .me coils oi wire, two or more magnets, and two or more di-ks or d iiidiragms, so arranged relatively to each other that if on, of the ° Id",I> "^ns 1)0 Pul »> -notion by the voice, by a creto " ,;t,,10nv'80’ ,l 8|"‘» "-'"<-0 n transient current of cLtricitv i its aS mid patent of Doll. “W> ,“ll0,,B °f Dolboiu' «»*1 Gray, Edison (148) v. Gray (3) v. Dolbear v. McDonough v (174,485). J Interference I. Dolbear v. Gray (1) v. Bell (186,787). one°.r,roro ofCiu°e2es° whil 'T"’0’ -'l-P'-ted ■ 2d. [ Formerly JT.l "Two „ , , % •««- to sonorous vihit n tZZZ vi± INTERFERENCE No. 1. Edison— Blake— Ikwin— Yokokeks. A spring, 'forming or carrying ono olootrodo of .the circuit of a telephone, and constantly pressing against tiie other elcctrodo and diaphragm to maintain the re¬ quired initial pressure between tho electrodes, and yield to the movement of tho diaphragm (Blake’s claim). This is substantially claimed by Irwin (claim !!), and is described or shown in tho applications of the other par¬ ties. IN THE MATTER OF INTERFERENCE ON TELEPHONES. Voelkers. I Irwin. ! Case Blake. [No. 1. Voelkers Edison. J Dolbonr Gray Berliner Edison Bell. PiiinAniximu, March 13, IPSO. It is stipulated in tho above interferences that ease No. 1 is to fall behind cases A and B in the dntes for tho taking of testimony and tho hearing, aiid that Edi¬ son may tnkcahis testimony in all of tlieso cases at the same time, and that at the hearing the testimony in all these eases, and tho Exhibits, may bo used in each case by any party to any of said cases. GEO. IV. JDYER, For Voelker and Irwin. .TAMES J. STORItOW, Counsel for Berliner, Blnko & Boll. BALDWIN, HOPKINS & PEYTON, Attornoys for Grey. LEMUEL \V. SERRELL, Attorney for Erlison el all. FRANK L. POPE, Attornoy for Dolbonr. list THE UNITED STATES PATENT OFFICE. In die Matter of Interference. Thomas A. Edison, Interfer¬ ence A, Case 130, Ei.isiia Guay, Emile Beelineis, Gko. B. Richmond, A. E. Dol- bbak, A. G. Holcombib, A. G. Bell. PRELIMINARY STATEMENT OF THOMAS A EDISON. (Filed September 2Stli, 1ST8.] City, Comity and State 1 of Now York, f Thomas A. Edison, being duly sworn, deposes ami says! I concoivcd apparatus for carrying out the inven¬ tion in question as early as February, 1878. • I obtained Letters Patent, No. 141,777, dated August 12tli, 1873, which contained a dwico for transmitting . waves of varying intensity over or within a closed. cir¬ cuit containing an electro magnet. I conceived the idea viii out tlio conception between .Tilly, 1875, end December, 1875, botli with tuning forks, reeds nnd diaphragms, for transmitting sonorous vibrations. It wns exhibited to many persons between August, 1875, and December, 1875, and since. THOMAS A. EDISON. Gworn to nnd subscribed before 1 me, this 25th day of Septem- > her, A. D. 1878. j [seal] Geo. T. Pinckney, Notary Public, Kings Co. Approved May, 1, 1879. Wilber. IN THE UNITED STATES PATENT OFFICE In tho Matter of Intorfroncc. Thomas A. Edison, Interfer¬ ence 15, Case No. 130, Elisha Gray, Emile Berliner, Geo. B. Richmond, A. G. I Bull, PRELIMINARY STATEMENT OF THOMAS A, EDISON. [Interference 71.] (Filed September 2S, 1S78.) City, County and State ) of New York, j ss‘ Thomas A. Edison, being duly sworn, deposes and says, that I conceived the apparatus for carrying out the invention in question ns early ns February, 1873. I ob¬ tained Letters Patent, No. 141,777, dated August 1", 1873, which contained a device for transmitting waves of varying intensity over or within a closed circuit con¬ taining an electro magnet. I conceived the idea of employing this apparatus in conjunction with a diaphragm in July, 1 875 ; constructed apparatus to carry out the conception between July, 1875, and December, 1875, both with tuning forks, reeds and diaphragms for transmitting sonorous vibra¬ tions. It was exhibited to many persons between August, 1875, and December, 1875, end since. THOMAS A. EDISON. Sworn to nrnl subscribed before 1 me, tin's 25tli dny of Scptciu- !• ber, A. D. 1878. ’ ) bealJ George T. Pinoknev, Notary Public, Kings Co. Approved May 1, 1879. AV ILUEIE. IN THE UNITED STATES PATENT OFFICE. In the Matter of Interference. Tiiomiis A. Edison, Interfere ence C, case No. 144, Elisha Ghat, G. B. Richmond, and A. G. Bull. Speaking Telegraphs. ( Interference C.) (Filed Sept. 28, 1878.) City, County and State of Now York, ss.' Thomas A. Edison,- being duly s ays, that the instrument in which two o electrodes were placed in an electrolytic liquid and used with a diaphragm to increase or decrease the resiBtanco of the circuit, was eoncoivod some timo in August, 1870. TIIOMAS A. EDISON. Sworn and subscribed boforo me this 25th dny of Septoinbor, A. D. 1878. Geo. T. Pinoknev, Notary Public, Kings Co. Approved May 1, 1879. Wilber. xii HST THE UNITED STATES PATENT OFFICE In tho Matter of Interference. Tiiomas A. Edison, Interfer¬ ence I), ease No. I -l-l, Gkoiioe II. Richmond, Elisha Guay. ! PRELIMINARY STATEMENT OF THOMAS A EDISON. SfEAKlNO Tei.EOIIAI'118. (Interference D.) (Filed Sept. 2S, IS7S.) City, County end State of Now York, .s-.v. ; V ,L‘m" ,lub' sworn, deposes and sajs that, » Letters Patent No. HI, 777, dated August 18/3 aie shown the mam features involved in tho present interference. In this patent is shown the vihrut- ing pomt’ Celi, water and adjustment, and the vibration of the point within the eell produced a rise and fall of tension within a closed circuit containing an electro mag. ;iet. In July, 1875, I conceived the idea of employ! these devices with a diaphragm; made experiments with .apparatus embodying this principle during the latter li! M 1'S,'r5"’itl' tlmiug forks and diaphragms, hi Mat, I8i(f, further operative iiistriimeuts wore made- and from that time down to the present oxtendod teste xiii have been mado to reduce tho invention to the most available form for practical use. THOMAS A. EDISON. Sworn to and subscribed before me ) this 25th day of September, 1878. j Geo. T. Pinch, nev, (sea i,.) Notary Public, Kings Co. Approved May 1, 1S70. Wilder. IN THE UNITED STATES PATENT OFFICE. In the Matter of Interference. Thomas A. Edison, Interfer¬ ence E, Case No. 145, A. E. Domieai:, Geo. II. Rich¬ mond, E. Gray, A. G. Bell, , and A. G. Hoi.co.mhe. Acoustic Teleouaiuis. PRELIMINARY STATEMENT OF THOMAS A. EDISON. [. Interference E.~\ (Filed Soptombor 28, 1878.) City, County and Stato of Now York, as. : Thomas A. Edison, boing duly sworn, doposes and says, that I conceived tho apparatus in question about September, 1875 ; I constructed and operated an inst ment of tins kind somo time in September, 1875 prepared a caveat December 25, 187;' I I i: full description of the apparatus. This caveat was fi somo time in January, 1870. Apparatus embodying invention in question lias been constructed by me r publicly introduced since the preparation of the cav papers. THOMAS A. EDISON. Sworn to and subscribed before ) mo, this 25th day of Scptem- v ber, A. D. 1878. j Geo. T. Pinckney, Notary Public, Kinds Co. Approved May 1, 1879. IN THE UNITED STATES PATENT OFFIOE. In tlio Matter of Interference. Thomas A. Edison, “ G,” case No. 148, Eusnx Gray, Geo. B. Ition- mond, A. E. Dolbear, A. G. Holcombe, James II. McDon¬ ough, A. G. Bell. Acoustic Telegraphs. PRELIMINARY STATEMENT OF THOMAS A. EDISON. [Interference (?.] (Filed Sept. 28, 1878.) City, County and Stato of New York, as. : Thomas A. Edison, being duly sworn, deposes and says, tliat I conceived tbe apparatus in question about November 1, 1875; 1 constructed three receiving tole- • phones December 20, 1875; I put them in practical operation on tbe samo dnte (December 20, 1875), and tbe same liavo been in public uso over since '; these instruments wore seen in operation by many persons ■IN THIS UNITED STATES PETENT OFFICE. In tub Matter of Intor- : cnoo Thomas A. Edison.— L. Case, No. 145, A. G. Bull, Elisha Giiav. . Acoustic Tui.ua raviis. PRELIMINARY STATEMENT OP THOMAS A. EDISON. [Interference I.~\ (Filed September 2S, 1878.) City, County and State of Now York, xx. : vention in question has boon oonstrnotod by mo and publicly introduced sinco tbo date of tbo caveat. THOMAS A. EDISON. Sworn to and Subscribed bo- ) fore mo, this 25th day of !■ Sept., a. i>., 1878. | George T. Pinckney, Notary Public, Kings County. Approved— May 1, 1870. WlLRER. IN THE UNITED STATES PATENT OFFICE. In tiiij matter op interference Tiiomab A. Edison, Inter¬ ference. M. Case 141. Emile Berliner ; Speaking Telegraphs. Preliminary Statement op Thomal A. Edison. (Interference M.) (Filed Sep’t. 28, 1878.) City, County and State of ) New York, ( **• Thomas A. Edison, being duly sworn, deposes and says, that about April, 1873, 1 discovered that plumbago placod in tho electric circuit and subjected to varying April IS70, 1 applied this discovery, in connection 1 n diaphragm, in u speaking tclcplionc. I continued to 'experiment witli varying success i: February li, 1877, at which time the macliino was f and successfully nperated. I then aflu procoedei dcvelopc more fully die other points of the appara and to bring it before the public. Between Septem lSio, and January 1870, I tried the plumbago in com tion with the tuning fork, to cause a rise and fall tension, but I have been unable :to find any memorand by which to define the date accurately I In. h. t ,| -telephone, with carbon' point and diaphragm, was p icly introduced in July or August 1S77. THOMAS A. EDISON Sw-oru and subscribed before me this ) -•oh, day of September, 1878. | Approved May 1, 1879. Notary Public, Kings County, Tr , • 60"’ l,ei,« duly awora, deposes a eays, that lie conceived the point in controversy soi tune before March 1877, reduced it to practice Mar Mc„. 1’ ""''/f"" y *■** the instrument betwc Menlo Park and the Western Union Telegraph Offico Now 1 ork City, which resulted in frmicmltt:,.,. _ i .. instrument made and dated March 5, 1877. That ho foels sure that ho nsod this dcvico earlier than the abovo Into, bnt so far has been unable to find any sketches of it. That ho thinks tho point in controversy is shown in Ids patent No. 208,014 of April 80, 1878.' That ho hns i sketch dated April 1, IS77, showing the point in inter¬ ference in a different shape. That ho has other sketches made in April and Mny ; duo May 23; 1877, especially contains tin evict designs md devices shown in deponents application. NO. 141. Since those dates and up to the present time lie has been engaged in experimenting and making telephones, md is now engaged on experiments on telephones in which devices of this character nro employed. Service of a copy of tho foregoing acknowledged tlii 2d day of Novomber, 1880. JAMES J. STORROW, For Bell & Bluke. FRANK L. POPE, Atty. for Dolbenr. Service of a copy of tbo foregoing acknowledged this let day of November, 1880. BALDWIN, HOPKINS & PEYTON, Aliys, for Gray. Service of a copy of tlio foregoing acknowledged this 2d day of November, 1880. ‘ Ally -for Irwin and Volhers. Ally, of record for Mchvumd. ■ w7‘,C0 °! “ C°K' of fol'egoing acknowledged this Bightli day of November, 1880. james w. McDonough. IN THE UNITED STATES PATENT OFFICE. Before IIon. Commissioner op Patents. 'ho interferences on Telephones hctwoeii Thomas A. Edison, . A. E. Dolbenr, Elislm Gray, A. G. Bell, J.W. McDonough, G.B. Richmond, W. L.Voolk- ers, J. II. Irwin, and Francis Blake, Jr. Deposition of witnesses examined on behalf of Thos. L. Edison, pursuant to annexed notices, at the laboratory f T. A. Edison, Menlo Park, Now Jorsoy, on Monday, Nov. 8th, 1SS0. Present — L. W. Sorrell, Esq., on bolmlf of T. A. Ed- son ; W. D. Baldwin, Esq., on behalf of E. Gray! 3ol. Geo. W. Dyer, and Mr. Betts, of Messrs. Betts, kttcrbnry & Betts, on behalf of Messrs Irwin, Voolker, ud Richmond ; and J. J. Storrow, Esq., on bolmlf of Jessrs. Bell and Blake. Thomas A. Edison being duly sworn, deposes and ays, in answer to interrogatories propounded by L. W. Scrrcll, Esq., ns follows : Q. 1. Please state your name, age, residence and occu- intion 1 A. My nntno is Thomas A. Edison ; 33 years of age ; csidonco, Menlo Park, N. J.; occupation, Inventor. Q. 2. Plenso stato the gbnornl circumstances under (jLjUl aCu-eJ^ 111 some paper which l cannot recollect, Imt which I thin I saw about 1872. This insl miiiciit was Reiss Tniusmii ter mill Receiver, exhibited hy Prof. Vnndcrwyde, befon some society ill Now York. Tlio instrument was described and illustrated in tli publication to which I refer. The nest timo my attention was called to sound vilira tions in connection with electricity, was. [ think, in tin summer of 1874. This apparatus was invented hy Elisha Gray of Chicago and I had it described to me about that time. The object of the invention was to transmit several in dependent messages hy breaking up musical waves o: different rates of vibration into short and long sounds constituting the Morse alphabet. . When 1 heard of this, I began to read upon the sub jeet of acoustics, as I was interested in not having nr; Quadruples replaced by another method. Soon after J laid heard about Mr. Gray and had his instrument gener ally described, I obtained a copy of a hook called “ Tin Wonders of Electricity.” translated from the French o J. Bailie, and published by Scribner, Armstrong & Co., at New York, in 1872. I think, I obtained this book eithcr in the hill of 1874 or the winter of 1875. (Counsel for Edison gives notice that tin said book will he used at tile hearing ol these cases, and references made espeei- , “% ‘o pages 140, 141, 142, 143.) ' "25 also, being reprinted in PRESCOTT’S SPEAKING TELEPHONE, published in 1878, on What particularly struck my attention in this In was the statemont, made on page 142, in which it sti ibout two plates being used, one at ono end of the 1 tad the other at the other end of tho lino — ono sott the other in vibration; and the author speaks of the ; libilitv, when tho instrument shall have been perfec if transmitting convurs.iti hi by this means. I exercised my mind considerably upon reading t to imagine what was meant by these two plates, and w means were used, or could bo used, to transmit colli I came to the conclusion that some means or moth must be used whereby loud sounds and low sounds co be transmitted, and I recalled to my mind moth whereby this could be carried out. 'flic conchtsio Hut I had, in 1 S73, devised menus ami waves of electricity of varying strong mitted over telegraphic circuits and re means of u magnet. This is shown i 141,777, of Aug. 12, 1873. It was the means shown in this patent for varying resistance of a circuit in proportion to the amplitude; vibration that 1 thought of in connection with transmission of weak and loud sounds or modulation In Juno or July, 1875, I think in July, Mr. Ort the President of the Western Union Tolegrapli Co., s for me to call and see him. I did so within n day two aftor he scut for me. He stated to mo that Eli Gray, of Chicago, was creating quite a stir with acoustic inventions, and lie desired me to tako holt tlio whole subject of acoustics as applied to telograp ml sou if them wns anything hi it. tlmt would be useful o the Western Union Telegraph Co., ntiil lie asked me I’ I would tnke tho mutter tip mid enter into n contract ritli tlmt coiii]>iinv to investigate the whole subject. I tnted tlmt 1 would do so if the contract wns satisfactory, to made some verbid agreement with mo until wo could Jttlc on a proper contract, while I was to go at experi- This contract was htiidlr satisfactorily drawn up, and was signed on the 14th of December. (Counsel for Mr. Edison hem produces the contract for the cxnminntion of tho respective counsel, and .by consent a copy of the Slime is to bo made by the notary and put. in evidence in place of the original, the same being designated EDISON’S CONTRACT, W. U. TEE. CO., DEC. 14, 1S75.) Within a few days after I hnd first seen Mr. Orton on lis subject as above stated, and in July, 187fi, I received om him a translation in English of the original article I the Reiss Telephone, which he sent for my informa- (Coiuise-1 for Edison here produces the said translation for the inspection of the re spectivo counsel, portions of the same being published on pages 0 to 12 inclu¬ sive of PRESCOTT’S WORK ON SPEAKING TELEPHONE.) After receiving tho translation I read it over very enre- lly, but found that it contained nothing moro than mt 1 had previously read regarding the Vandcrwydc- liss instrument. In relation to that portion of the translation which re¬ ed to articulate speech, I sketched upon ono of the sheets of the translation some few devices which I pro¬ posed to try. These sketches wore made within cer¬ tainly ten days from tho lime of receiving tho transla¬ tion, which wns about. July, IS73. (Counsel for Mr. Edison produces photo¬ lithograph copies from a tracing of the of the sketches referred to, the original being here present, but being in pencil, and tho paper somewhat dirty, tho snmo is not ns distinct ns when the copy from which the plioto-lithograpli was tnken wns made, and tho original and photo- lithograph are submitted for comparison. The said photo-lithograph being marked translation by W. U., TRANSLATOR OF REISS’ TELEPHONE.) It is consented by the respective counsel that all the exhibits in the form of written memoranda, or drawings tlint may be put in evidence, shall be considered ns formerly introduced and offered in evi¬ dence, and said exhibits shall bo photo- lithographed, and tho copies received in evidence with tho same force ns the originals, that said originals shall bo in the possession of Mr. Edison, or his counsel, to be produced at tho hearings or at any of the proceed¬ ings, upon suitable notice. That whatever model exhib¬ its or instruments are put in cvidenco shall also he con¬ sidered ns properly offered in evidence, with or without special notico to that effect, and that correct drawings shall be nindo of such instruments, and photo-lifiio- grnplicd, and tlio same shall be received as evidence, the same ns the actual articles, and said articles shall lie in tlio custudy of counsel for Edison, to bo produced at the hearing, and upon reasonable notice, whenever called for, and that copies shall be furnished to the respective counsol as soon ns possible, each party of course having tho right to enter any objection on the record. oni the other knife-edge, immediately over tiiese kuito IgoB, \v«s « funnel filled with water, with drip wick, Inch allowed water to drop upon the knife edges, run, ong them, and he held by capillary attraction. The life edges were a short distance apart. The vibration of the dinplimm, carrying one knife edgo [used it to approach and recede from the other knife lge, and thus throw in and out of circuit more or less '"that portion of the circuit which consisted' of water, id thus vary the resistance of the same. j The object of the drip wick was to supply the loss duo I electrolyses into oxygen and hydrogen. I have spoken i if tlicso instruments were made. I do not mean to IV they were made. My sketches were rough ideas of how to carry out nit which was necessary in my mind, to turn the Reiss •ansinitter into an articulating transmitter, They >,e,o otes for future use in experimentation. Q. 4. Did you converse with any one, as far ns you nnnmber then, in relation to the proposed speaking in- trument, and if so, with whom and about when 2 A. I think I conversed with a great many people on lie subject, Imtl cannot recall with certainty any onoex- ept Sir. Batchelor, my assistant .Tames Adams, one of ly assistants who is now dead, but there were many pco- , ilc around the laboratory when I was experimenting on niisieiil and vocal transmission, among whom I may nention Clias. P. Edison, now dead, .Tno. C. Reiff, of few York, E. I I. Johnson, of Now York, K T. Gilliland, low living at Indiadapolis, Indiana, John Kruosi, Robert Ipicc, and many other persons. It was a kind of a pub¬ ic place. My laboratory at that time was at 10 and 12 Q 1 it. Did yon over apply llie device yon Imvo j described in n speaking telephone ? A. Yus, sir, I linvo; it is shown and dcscrilied in patent 2»il,0i:i granted April !(n, 1878, filed Doc. 1 S77, fig. (1. (The sinno being offered in evidence.) Q. 14. Have yon any other sketch illustrating i similar device to EXHIBITS 7-0 and 0-0, if so pie produce tiie same ? A. I here produce a sketch (offered in evidet marked EX1I I HIT 0-0) in which the spiral spring of 1- ri I I5IT 7-0 and 0-0 is rcpluccd by a battery called a ] arizing battery. I will now describe 1 tl I worked as illustrated in this sketch : A timing fork was mounted upon a resonant box i was set in vibration svmpathetically from another fi through the medium of air waves. Placed on this i onant box was a battery which contained a liipiid wh caused a powerful polarization of the electrodes T was included in a closed circuit containing a magi when in a state of rest the battery was so powerfully Inrizcd that scarcely any current passed through the i suit, but the slightest noise would causi puli il di poll nation of the electrodes, and the strength of the cum would be increased, thus translating the vibrations of fork into a closed circuit through the medium of a vi able resistance. This sketch was made, ns well as tl I i Nov. 1 It, 1876. It is signed by myself, witnessed by James Adams a John Kruesi. The following is written upon it : “ X is a quickly polnrizing battery, wh depolarizes powerfully with the least j as the tuning fork Responds only vibrations in union with its swing - tine, it will be set in motion, and tl in its turn, will set the resonant I vibrating, depolarizing or knocking lo tho hydrogen bubbles on the plates ol the battery X increasing tho strength and closing the sounder, the 8 should have very low resistance.” int the S in this case means tho sounder- ill-!) (here offered in evidence) the lower refer to in thooxhihit. In this, as in the , a resonant case is used with a tuning [ion it, and is worked in the same man- ns exhibit; blit upon the resonant box ivoted at the extremity of tho resonant >' contact points upon their other ex- points being in contact with points upon >. The circuit, which is a closed one and cry and a magnet, passes through all these coiituet points. If now the fork be lg motion is given to the levers, and a tacts, or irregular or indefinite contacts, four points, throwing the constant current undulations, as in the previous exhibit, rns made Nov. 18, 1S75, signed by my- r Clias. Batchelor and James Adams, i apparatus and worked it, and it worked The apparatus was probably made within ir the drawing was made nml signed, ly made within four days after the date Til I > IT 22-9 (here offered in evidence), 20, 1S75, is signed by myself, is wit- Kruesi and Robert Spice, nt consisted of a tube within which an- iluccd, sliding ill ami out after the maiiuei ibe; in front of the stationary tube was a tin, in front of which was an electro olcctro magnet was energized by clcetri presenting sound waves. Tho end of the in tho stationary tnbe was provided wit! he end of which was capable of being r. When tho electro luntmet was oner Labokatohv ok T. A. Edison, Menlo Park, Now Jorsi Tuesday, Nov. { Mot pursuant to adjournment. Same parties present. Continuation of examination of T. A. Edisc Q. lfi. Ilnvo you any instruments correspond; device illustrated upon tlie Exhibit 22-9 ? A. No, sir; tlio instruments made were tn and used for other experiments. Q. 10. Had you made, before December 20, acoustic instrument having a magnet, n resoi and a diaphragm? A. Yes, sir; I believe I made threo instrmne The instruments were made, perhaps, the i November, 1875. They consisted of tubes, iron diaphragm, an magnets in front of tlio diaphragm, the same pi the telephone receivers, now universally used, < magnetic constant was produced by a battery i a steel magnet. Q. 17. Can you produce such instruments, oi A. I can produco two of the first ones mi produce them. (Same offered in evidence, mu “ Edison’s INSTEUMENT A Nov., 1875.”) Q. 18. Stato whether or not tlioso instrum III BITS A AND A‘, were actually used, am what manner ? A. The instruments woro used ns soon ns tin office, at 10 and 12 Ward street, Newark, in E 1875. Threo instruments were placed in the A. It shows a telescopic resonant chamber, withnruh her tube oar piece, with a strip of iron in front of till chamber, set in vibration by the electric waves, repre¬ senting sound waves in the magnet in front of it. Tliii apparatus is similar to that shown in my EXHIBIT 22-0 Q* Wlmt difference, if any, is thcro between the INSTRUMENTS EXHIBITS A AND A' and tl.e do vice shown in EXHIBITS 2‘S-O and fig. 14 of the Caveat ? A. In EXHIBIT 22-9 a strip of iron was fastened across the end of the tube, whereas in EXHIBITS A AND A’ iron diaphragms were used. Q. 21. Have cither of the EXHIBITS A AND A' beon changed since they were originally made? A. No, sir; I don’t think they have, except that I no¬ tice one of the diaphragms lues become partially uu- seilelcrcd. Q. 22. State whether or not EXHIBITS A AND A1, when simply adjusted, can now be used ns telephone re ceiving instruments ? A. Yes, sir; they can bo and wero used a long wliilo for that purpose, and I have already stated that there is no difference between tlicso receivers and the receivers universally used, except in the method of producing a constant magnetic field in them. Q. 23- About how often and during what periods have Exhibits A and A1 been made use of for receiving acous¬ tic vibrations transmitted electrically ? A. They have been used from tile time they wore made in Nov. 1875 at various intervals up to the spring of 1877, especially EXHIBIT A1, and another instrument with a larger diaphragm, and which was one of the three first made. Q. 24. So fares tho actiou of tho instruments A AND A' is concerned in receiving and rcndoringmuliblo acous¬ tic vibrations translated into electrical waves or vibra¬ tions, docs it make any difference whether the original oso instruments nro cnpnlilo of t si t 0 from At tho lime thoso instrumonls, EXHIBITS A wore made, which was shortly buforo the contract id I iv tho Western Union Co., iliil the terms of met and of your employment hy thut Company, direct your attention to tho transmission iif tostinn objected to by counsel for Gray i callin'; for the construction of a writ* -■n contract and for the inference drawn V an interested party as to the nicnnlmr fa verbal contract the terms of which •e not stated.) nisei for Hr. Edison replies that he >es not call for his interpretation of the attract, but what the attention of the itness was directed to.) ilnptod to the trail-,...!— ion” .f' artiwdato'^ceeb! o the constnietion of the instruments EX- V AN D A', had you made any device specially uroto* 01 Sli°tulles of imf (,e'’iao sjioeially id made sketches of an instrument for that hid. is shown in EXHIBIT REISS TEI.E- ranslation. 0 dL 1 t, I think in Oet. or Nov., tonsuring the resistance at dilferent intervals etallic electrodes in oleetrolytie solutions, triiment was not adapted to tho t s son e speech, but was an instrument to ascertain io availability of exceedingly slight motions of im- lorsod electrodes to increase and decrease tho resistance f a circuit. I tried a great number of different chemical solutions ith this instrument. I also used vibrating plates provided with an immersed outrode, the vibration of such plato varying the resist- ice ill the line. ' Some forms of these instruments wero capable of be- ig used for tho transmission ot articulate speech, but icy wore not used for that purpose. Q. 27. Please state m that connection about when it as that you did actually use instruments for tho triins- ission of articulate speech ? A. The first instrument made for the transmission of •tieulate speech was made some time in Dec., 1875. Q. 28. Please tell us what that was and what you id with it ? ' A. It consisted of a stretched membrane with a point ' wire fastened to its center and immersed in electro¬ tie fluid, tho wiro electrodo boing adjusted so as to bo ■mediately opposite another electrode, the two separat- 1 by a short column of water. Q. 20. Having reference to your PATENT lil ,777 id tho REISS TELEPHONE TRANSLATION and ie sketches that you made thereon, what, if anything, unplctc and operative telephone. A. Nothing, except to adapt to the lever f, fig. 1, in y patent, a means for concentrating the energy of him! waves, upon it, so that it could he set in motion ■oportionately to the amplitudes of such sound waves, the end that the resistance of tho electrolytic cell lotdd be increased or diminished in proportion to such ii'iublo amplitudes of vibration and throw upon tho ie which in this case is dosed and never broken, a se¬ cs of underlntory currents, having tho snmo quality as pitch and amplitude as the original sonorous waves Mull gavu motion to tho lover f. In the fifth plneo, the experiments were conducted in a cry noisy place. In the sixth place, the resistance of the magnets used u the receivers wore wrong for this kind of tnmsmis- In the seventh place, the receiving diaphragm was too tick for rendering audible over and above the nuiso ay sound waves due to speaking into the transmitter. Q. 88. Were the experiments that yon have spoken of > made in Dec. 187f>, the only effort that you made in 10 year IS7f>, to carry out your original conception of to possibility of transmitting articulate speech clectri- illy'i A. It was the only direct trial actnally with the voice, at other devices were made and tried, which were laptcd to the transmission ot articulate speech, and Well were afterwards so applied, Q. 3i. Please state which those devices were? A. They are the devices shown in EXHIBIT 7-!), 9-!), M), and (l-i), and also in another sketch, which I now (Counsel for Edison exhibits this sketch and the accompanying description, dated Nov. 1 7, I87S, to the respective counsel, the same being in a honk known as Exper¬ imental Researches, Yol. I., p. 23, and as the said book contains other matters not relative to this case, lie asks that it be consented that the Notary make a copy of the text and a tracing of the drawing, to bo received with the samo force as the original, and the same to be marked EXHIBIT DEPOLARIZATION OF BATTERY, NOV. 17, lS7a.) (The foregoing request is acceded to by the . respective counsel.) Q. 30. Please describe the bearing that the instrument lis sketch shows a battery with ono of i s elec- tnclicd to n vibrating rood, D, which was kept in vibration by a local circuit and sell' make a ntnet points on the reed 1), and spring IS, eon- g made between them. ibnition of one of the electrodes of the battery tof the fluid produced a rise and fall of tension, &d circuit continuing a magnet, 0, both by tho a disturbance of the polarization of the elec- ;! also by a greater or lesser contact with the Mo- roilc orlhpiid. Referring to EXHIBIT |l)-l), state what action, ras produced thereon by atmospheric sound lie experiment made with the apparatus shown in EXHIBIT KM), the ultimate effect of the soiiuil s, their translation into the closed circuit coll¬ ie magnet and battery, by rcasou of a diiiiimt- eiease or variation in the intimacy of contact ho four contact points of tho levers upon the >ver of the resonant case. Which, if either of the counts in this inter- lid the said apparatus shown on EXHIBIT 10!) d with i inrrosponds to the count in Case I, except that lovers were used in place of n spring, ami the cssurc between the points upon the mobile the box and the levers was obtained by the ac- avity. State whether or not tho lovers employed on meat, EXHIBIT 10-!), were rigid, and whether i resonant box operated in the same manner ns >y "’ore pivoted, and wore not rigid •ant box acts in the same manner as a din- Wlint, if anything, would bo the diflerenco in the in Mr. Irwin’s application now in interference, so far as the transmission of electric waves corresponding to tho sound vibrations '( A. If Mr. Irwin and Mr. Voclker used metallic con¬ tact points, and their instruments worked, then the in¬ strument shown in EXIIII BIT IlM) would also wor kin the same milliner, ns far in It I i the intimacy of contact is concerned. Q. 40. I now read to you the counts in Interferences A and B, and ask you which, if either ot the instruments made in 1875 contains the subject mutter of said counts ' A. The instrument shown in EX II I BIT !)-10, 10-0, the instrument shown in my patent 141,777, the instru¬ ment shown in my EXHIBIT DEPOLARIZATION OE BATTERIES correspond with the counts in INTER¬ FERENCES A AND B. Q. 41. Which, if either, of the instruments used in 1S75 corresponds to thu counts in INTERFERENCE E ! A. Tho instrument EXHIBIT A AND A1, and tho instrument shown in EX 1 1 1 BIT 0. Q. 42. Did vim at any time, if so, when, tile a caveat, showing a device corresponding In the count in interfer- A. Yes, sir; I liled a CAVEAT, NO. 74. January 14, IS70, in addition to the one mentioned after my 18th an¬ swer, which exactly corresponds to the count in IN¬ TERFERENCE E. Figure 4 shows that instrument. (CAVEAT NO. 74, sworn to January 13, 1870, tiled January 14, lS7fi, offered in evidence.) Q. 48. Please describe tho operation of said receiving instruments shown in the said caveat, and state which, if any, wore actually mndo? A. There was a line, or closed circuit, in which several t/4 <R, y*f- 7*> dot scut on ono rood, and other pert on otlic him giving lip anil down stroko distinctive, cimsi operator to read without trouble.” 'L'lio operator read dots and dashes made np of [(rations, listening at the ear-piece marked “ oar I here produce a sketch marked EXHIBIT licit was made by my assistant, dames Adams. 1 te, ‘‘5th, 187(1,” but tliu month has been torn < is probably made within a day or two of the KX1 L'lio following is written upon the sketch : ‘ Platina point and brass dirphragin ; tried pa] vitli different chomicals ; could get it, but artic lot very good.” [ have here a sketch, marked EXHIBIT 58-K ly 2fi, 187(1, signed by myself and witnessed bv nms and Charles Batchelor. I’liis instrument consists of n number of contact ;b contact points resting upon the surface of a ;m resting upon a chamber. L'lio following is written thereon in my own w ‘ I think the high notes are madeby the middle liaphrngm only vibrating, while as the notes an lore of the diaphragm vibrates, hence by pinch ict points from center to rim may get dillcrcn ml have levers cut in and out resistance.” [ have stated that these contact points were s lake a correction. They were lovers. I cannot remember whether the instrument win not. Thu intention was to transmit artii iccli. The words “speak here” are written tom of the ehiunlicr carrying the diaphragm. ; here present a sketch made by myself, date 187(1, No 71-1(1. l'lio sketch shows a transmitter and a receiver j'luss fillol up to :i short distance below the tup of tl small tubo with water. In the water were immersed tw electrodes of a closed eireait containing a magnet and battery, the magnet being in front of a diaphragm eoi nceted to a chamber, 'flic idea was to speak into tl: beaker that the body of water in the beaker would mov and amplify the water in the small tube. The following words are written upon the sketch : “X water, idea being to speak in beaker and set tli “water vibrating, thus giving large amplitude in sum “side tube and thus increase and decrease the resistance “ giving tiie proper waves to magnet so ns to carry on 11 conversation.” On the lower part of the exhibit is written ns fo “ Instead of employing a lease mirror on the needle i “ a Thompson mirror galvanometer. I propose to emplo ‘a thick mirror about 1-2 inch long and 1-32 inch widt “ or even smaller.” J ills instrument was made perhaps within a day n two after the date of the sketch, hut did not work. About May, 1S7G, I started Mr. Gilliland to exper meat upon this subject, and with him was some oncolsi i think Mr. Adams, these experiments were continue dong to about August, and later, in fact they were ne\ ;r discontinued. I have here a paper in Mr. Gilliland's handwritin< luted August 2, 1 87(1, which is put in as EXHIBITS 101 10, 102-10, 1(13-10, 104—10. I produce an EXHIBIT MARKED “TALKINt TELEGRAPH, JULY 12, IS7G.” This sketch illustrates a transmitter consisting of tube with a diaphragm to the center, of which is fust mod a number ot strings. These radiate out some dii anee from the faee of the diaphragm and are councctci o contact springs in front of t t j ts The springs and points are all included in a closoi lircuit containing a battery and a telephone receiver 'POH speaking into this tube the contact nnints war I will now refer to EXHIBIT 104-JO. T i resonant tube, or n elmniber provided will immediately opposite is n spring, sceiircd «t screw, mill near the center to tlie dinplirngi (lie end of the spring is a T, having not wliieli a nninber of contact springs faced or These springs were arranged witli resist! bv the vibration of the springs conncctci phrngm a complicated system of contacts which put in and took (rom a circuit resist! unit containing a battery and n telephonic r This instrument was constructed, perlmpi 1870, although it might have been a iiionl that. That sketch was made in August, 1870. ment did not work satisfactorily. Another form is shown in EXHIBITS I consists in a multiplicity of contacts, in coi a vibrating spring, set in motion by a diapl This instrument was also miide'and wor cieut degree to allow us to hope. This principle was experimented on up of IS77, and is embodied in my patent : April 3(1, I S78, filed Dee. 13, IS77. In sketch 103-10 is shown an illustrati with a diaphragm resting upon a flexible electrode, and the same were included in t tabling a battery and a telephonic receiver. The resistance of the circuit was niton pression of the flexible tube altering tbo si; ISON S EX II I HIT describe the miilillo diagram in IS whether the instrument reprc: i- made or used, ami with wlmt I'i'sii uncut shown in EX II I HIT It- 1 2 is ; wn in 2-12, the ililTerairo lteiiiii there shown, ami tho ends brought the diaphragm, tho notion is prat instrument was made about the wn iiiEXllllllT 2-12. Perhaps th used to try this inoililieiition upon mbit of trying a' great nnmbcrof i: lumber and diaphragm. One instr • or used, or parts used to try exper of apparatus. ilso, a drawiiii;, written and dated 1 !l, 1877, witnessed by Charles Butch n pins, between these pins is a disk g flanges cut upon it, through then , through which the four pins pn secured near the outer periphery of licit served to press the plumbago n< iy niomcnlum no adjusting screws;’ do not think was made. In iliagrai igm, in the center of which is fixed u n this metal there was held a piece inns of a thread ; upon the outer s igo was a concave paper disk, the < to resist the sudden movement of t an outward movement of thediaphi modifying the degree of pressure igo and the diaphragm, both by the i igo and the resistance offered lo th by the paper disk, the connection 1BIT 2-12. the diaphragm being con I the circuit, and the plumbago to 111 nratus worked well. Tho dirgrnm N (lification. I herewith produce the d lieve was used in the experiment No “ ICUIaON’S DIAPHRAGM r Mr. Kdison offers in evidei ked KDI S< h\”S KXII I 111 T M i| lie is asked whether or not 1, with (lie ap|dianrcs thereon, sold — if so, when and to nhout have been made. I think an red was started in dune, 1ST!), Company. A large number more than one instrument Hindi 1 1 1 It IT 1SS-12 — state whether form and design, I don’t think I produce any portion of the orij i your Letters Patent 2U!1,()I4 i eau produce a spring having p and a plumbago contact ] some experiments in ISTT, ; Q^aXto c^- mako tracings, so tliat they could ho kept apart for safety. (Thu cover refurred to iutrodueud as a “COVER FOR THE EXHIBITS.” So. Please now examine each of the Exhibit drawings referred to, and state whether or not the drawing upon each Exhibit was made at the d i It „ ted ii| I that Exhibit, and whether that drawing it still the sea; at it was at the date shown upon tliat. Exhibit ! A. T believe that every drawing wat made on the d ite written upon the paper, and I do oat think anv changes whatsoever have been ma le in the drawings. There has boon inttaueet where drawings were made, and a date anil title was not written do-.va, hut always within three or four days the date was placed upon the paper, which date was the date 'written, liunee the diagrams would in this ease he made before thu date upon them. These bosks were scattered all over the laboratory, so that if I wished to express an idea, or explain a movement or design to an assistant, I would pick up a hook near¬ est by, write the title, d ite it, put my name down, and make the drawings. When the hook was full, they were collected together and fresh hooks scattered around tho I®* laboratory. We ha 1 bean taught hv numerous interfer¬ ences the valuo of these records, and the necessity of figuring in hooks, in place of separate scraps of paper, which were very liable to he lost. S i Q. Are all of the sketches and drawings which you have dated ami witnessed, or have some of tiicse precautions been overlooked or omitted ! A. f have many drawings taken from tliuso hooks which are neither witnessed or dated, hut the majority are both witnessed and dated. 87 Q. Have you found any more of tho EXHIBIT SPRINGS 42-112 ides, tlie diaphragm being then le time in September nr Oetoln nunt which I produce. Instrument oiTered in e “ HD I SON’S TIIIJK TIM) DBS.” i instrument is substantially tin NSON’S AllTICtllATINO II’KU, 1S"7, with the cxceptio of platinn were used, betwee in, the initial pressure between le carbons was produced by a r iiphriigni when the electrodes w a the model the carbons have d ml the rubber tube which was u the diaphragm Inis become d -odiicc a sketch made Oct. 2, I s Adams, and signed by niyscll liicli shows in the figure Heart Hid a pointed lever adjusted hi 1 from the diaphragm. The ise tho diaphragm of the lever ■libber tube is placed between e back of the lever for giving screw upon tho right hand gli the bridge to the lever, and end, causes such lever to appn inpbragm and modify the initi lectrodcs. e cork was placed upon the di through it. in the bottom of w la connected to one polo and a the carbon which pressed upon ■ impression is that this instrut (Sketch ottered in ui ‘ EDISON'S EX 1 1 indo at tho tor in relation to u telephone was mado nml operated, I think, about Feb. 1ST!). Q. OS. Please ntato wlmt workman made the same, and !tow you are aide to iix the date? A. The instrument was mado by my nephew, CIiiib, Edison, and I iix the date by referring to his records >f experiments mado to perfect the chalk telephone, or notograph telephone, according to my patent N. 221,057. Ie started experimenting, as near an J can remember, in iopt. 1S7S, on motograph telephones, and continued such experiments up to about March. 1870, when lie left for tutrope. It was a month or so previous to his departure hat lie made the instrument in interference. (Jims. P. Sdison never returned ; he died in Paris, a few months ftcr his arrival there. Q. 00. Have you been able as yet to take the time for ollectiug together and assorting vour drawings and ketches relating to this motograph telephone? A. 1 have not. Q. 100. Have you been ahlo as yot to iiml the drnw- lgs of this particular instrument or instruments mado v elms. P. Edison, previous to his departure for Eu- Q 101. Are von able to produce am igs representing the precise subject iterferferonces ? A. Only one, which I now produce. 102 Q. Please state when this drawing was made and hat is shown upon it ? A. This drawing, I think, was made about July, I S79; is dated July 18, 1870, and witnessed by Chas.' Batch¬ er "»i[ John ICrucv.i ; it is marked a magnetic tele- 10110 , it is a bar of iron which is rotated by a handle : tins bar passes through a helix of wire not rotated ; o the surface of the bar at one end is an iron lovor rostiir upon tho surface at one end and connected to the centr of a diaphragm at tho otiior ond, and is in all rcspoct the same as in my application No. 188. 100 Q. Is there anything upon that sketch, EXIIIBr 100-14 beside this motograph telephone receiver, am state whether or not there is anything that enables yo to know whether or not this is. a drawing from wliiel Chits. P. Edison made tho instrument as spoken of be¬ fore in your testimony ? A. Yes, there is an induction coil, a cell of batter and a carbon inertia transmitter. I am certain the Clms. P. Edison did not make his instrument from thi drawing, as the form of transmitter shown ill this draw¬ ing was not in use when he was here. My impression i that this drawing was made by 1110 as explanatory of thi. .instrument which he mado to some person who I wa; endeavoring to illustrato the principle to, I naturally using the transmitter now in vogue. 104 Q. Returning now to the instrument mado by Clias. P. Edison about February, 187!), pieaso describe tlie same, and if it was mado in more than one form state tlie different form, and tell us whether or not any of tho instruments made by him were actually made use of in receiving articulate speech ? A. The instrument shown in EXHIBIT 100-14 wai identical with one form which he made. I will now proceed to make a drawing of another form which I re¬ member he made and tried. Drawing made and offered in evidence and marked “EDISON’S EXHIBIT MAGNETIC MOTOGRAPH TELE¬ PHONE." 105 Q. State what, if anything, is tho dilferonco be¬ tween tho instrument shown on this exhibit and the instrument shown 011 EXHIBIT 100-14? A. la tlio instrument shown on EXHIBIT 1C3-M tho friction was produced by direct magnetic attraction between tin moving magnetic bar anil the lover connected to the diaphragm, while in oxhibi' eallod EXHIBIT MAGNETIC MOTOGR \»II TELEPHONE, flic fric¬ tion wu prolate] by itii'nY.Dm, but not directly, lint through tlie medium of it love.1 resting upon n rotating bar, such lever being made to press upon the rotating b.n.- with greater or lesser pressure, ns I 1 g I was energized in a greater or lesser degree. ICO Q. Bid cither of these telephones receive articn- lnto speech ? A. Y03, sir. 107 Q. About how often wore they tested and over about whit period ? A. They were tested pei'liaps n week, different alterations being made upon them all the time, flic results were not considered siiflieicutly satisfactory compared to the plans which wo were working on, and shown in my patent 221,937, and we laid the matter aside until tho instrument shown in my patent 221,957 was patented. 10S Q. About how mnny instruments in all have you made containing the precise subject matter of these pre¬ sent interferences? A. I think two were iiir.de. 109 Q. And iiow many alterations, if any, were made to these two instruments? A. A groat many alterations were made, so as to im¬ prove the volume of sound, so tlint it would compare favorably with the plan described in my patent 221,957? 110 Q. Who, if anyone, know of tlio construction and use of those instruments containing the precise subject matter of these interferences besides Charles Edison, who is now dead. A. I think Charles Batchelor, Francis Upton, and John Ott know something about the experiment. 11 1 Q. In tlie sketch which yon bnvo placed in ovi- 83 tiiomas a. ltmsox. 247 donee, marked “EDISON’S ELECTKOMGItAPniO RELAY, AUG., 1870," you have roprosontod tlio ap¬ paratus as lining adapted to tlio opening and closing of a secondary circuit for a Morse sounder or other similar instrument, have you not? A. Tito motion produced was utilized for that purpose that is, opening and closing a local circuit; in this case the diagram is illustrative of the m-iiiciplo. 1 12 Q. When was tlio first instrument constructed, experimental or otherwise, in which tins principle of varying tlio friction between two surfaces by tlio iuerenso and decrease of an eiocrie current, in n circuit acting ^48 through tlio electro magnet? A. Tlio first instrument constructed where tlio increase or decrease of friction was produced by electro-magnet¬ ism, by varying the strength of an electric current in a circuit without totally breaking tlie circuit, was mndo about February 1 879. 113 Q. Wns tlie instrument you now refer to tlio snmo one which you have testified to having been made by Charles P. Edison? A. Yes, sir. 114 Q. Is tlint instrument now ill existence? A. T think not. I think it lias been takon apart and my assistants arc now looking for tlio parts. 115 Q. Yoiiliavo stated tlint two instruments embody- 249 ing this principle in different forms were made by Clins. P. Edison; which of those two forms which you have described was first constructed? A. I think tlie one made precisely ns tlie one in inter fcrcnconnd shown in my EXHIBIT 109-14. 110 Q. Did both of these instruments articulate speech intelligibly? A. Inm quite sure the one shown in EXIUBIT 109-14 did, but I am not sure as to tlio otlier form ns in ED¬ ISON’S EXHIBIT MAGNETIC TELEPHONE. 1I7 Q. By whom were the tests of this instrument A. I think by Charles P. Edison and Charles Unteh- clor. Q. 118. 0.m yon state what kind of a transmitter was nso.l in connection witli tins instrument ns a receiver dining lliese tests! A. Yes, sir; it was a regular Edison Carbon tranennt- I10Q. You have said, referring to the tests of this instrument, that the results were not considered suffi¬ ciently satisfactory, compared to the plans which von were then working on and shown in your patent 221,1)57, will yon please statu more delinitcly in what particular the results were unsatisfactory or defective! A. It wn3 not so loud as the nlan bIiqwii in rat, 231,957, hence we laid it aside for the time being to per¬ fect the plan shown in iho patent. Q. 1'30. Can you give approximately the date at which tlis experiments with this apparatus were discontinued ? A. I think in February, 1S79, wo stopped working the instruments. Q .121. 1’etwcen the month of February, 1ST!), and the time of your application, Dee. 31, 1ST!), was any time devoted, and if s >, hew much, in relation to tele¬ phones in which the diaphragm was moved by friction between an arm extending from the diaphragm and a A. I had several men working on telephones working on friction between an arm on a diaphragm and a moving surface, but no work was done, I think, on tho pliin where tho friction was regulated by magnetism. Q. 122. Did you, in any manner, ahaudon yonr inven¬ tion of magnetic motograph tclophonc now in interfer- foroacc, either by expressly stating that you gave tho same to tho public or otherwise 3 Counsol object to the above question ns lending. matter asuio tor tho time nomg, uoairmg to nrst penum tho plans shown in my patent No. 221,957. Q. 12.3. Is there or not any substantial difference be¬ tween the instrument made for you by Chas. P. Edison in tlio early part oftho year 1879 and the instrument shown in your application No. 1S3, tiled Doe. 31, 1879 ! Same objection. A. No, sir; no difference botween one form that lie made and tho application. Q. 124. State whether or not you have yet been able to find either of tho original instruments thus you have roferre l to in this case ! A. They have not yet been found. Q. 125. Statu whether or not in either of the instru¬ ments made by Chas. Edison, the revolving core was permanently magnetized ? Objected to by counsel as lending. A. Yes, sir; in one case it was. Q. 120. What was the object of permanently magne tizing that core ! Same objection. A. The object waste produce an increase and decrease of a constant magnetic Held. 127 Q. Pleaso introduce any other- exhibits you inn; linvo made in the year 1877, which you may think ad visible ns either bearing upon the general question nov in issue, or as showing your diligence up to the time o your application mule in December, 1877, and now ii tiiis interference ? A. 1 here present the following exhibits: 1-12, 3-12, 7-12, 9-12, 10-12, 11-12, 12-12,13-15 14-12, 15-12, 18-12, 22-12 (drawing portion only; 24-12,25-12, 27-12, 28-12, '81-12, 32-12, 34-12, 30-1S 38-12, 44-12, 45-12, 40-12, 47-12, 48-12, 51-12, 53—15 A. No, sir. I have already testified that 1 laid the fo\ Adjourned clock A. SI. to Thursday, ‘Nov. 11, 18S0, at 10 1-2 S. L. 6., Notary. Laboratory of T. A. Edison, Slenlo Park, N e\v J crsey. Tiiubsdat, Nov. 11, 1880. Slot pursuant to adjournment. Same parties present. Examination of T. A. Edison, E‘q., continued. A. I think I have several such publications and will ave search made for them. The following publications aro referred to as Exhibits l this case, and tile particular articles are reprinted in lie book of the Exhibits : ’ublication A. ' Edison’s Pressure Belay. Journal of the Telegraph, Jnnel, 1877, page 103. Scientific American Supplement, Aug. 4, 1S77. publication II. Telephonic inventions, descriptions of the inventions . >f Hell. Gray and Edison. In Philadelphia Press, July 0, 1877. In the Journal of the Telegraph, New York, July LG, 1877. This article was also published in other pnpers, E. G. Scientific American. Publication 0. , "The Edison Telephone. In the Sunday Trojan, Troy, Now York, September Publication D. The Telephone Concert. In the Chester, Pennsylvania, Evening Nows, Sept, 28,1877. Publication E. , - PISgrtuunuTof Grand Exhibition of Edison’s Tele¬ phones, Oet. 18, 1877, at the Tabernacle, Jersey City. Publication F. Testing the Telephone. In the Daily Graphic, April 17, 1878. Publication G. Genius before Science. In the Washington Post and Union, April 19, 1878. Publication II. . The Telegraphic Journal, .Tan. 1, 1878, page 1. Publication I. - "Academy of Science. In Nerv York Daily Tribune, April 20, 1878. Publication J. In the Daily Graphic, April 30, LS7S. Publication 1C. ScrHmcrVMonthly for April, 1878, page 853. Counsel for Gray objects to each and every of the above publications ns evidence of their having boon published at the times and places alleged, or of thp facts therein the undated EXHIBITS Q. 135. Please Aaa^ diip , c^9eo , JS~ HaMm- nmnuitly nml connected to the oilier part of the '-i eitit ami forming flic other olcctiodc, anil a spring between the (liaphr.igm anti e’cetrodca in the form of a short piceo of rubber tube, whereby the initial pressure between the two electrodes can be varied by the adjusting screw and when in their proper position variations tuko place by the vibrations of the diaphragm. Such apparatus was made, in fact, n number were made. This apparatus was made the last of August or first of Scpt.,1877. 1 am enabled to ascertain this fact by reference to EX- HIB1T 177-12, Sept. 24, 1877. The sketch shown on the bottom of 118-15 represents the electrode of a musical transmitter, consisting of a 1 1 1 „ a platina point facing a spring adjustable, between its support and the spring is placed a piece of rubber tubing to prevent a rebound of the spring elec¬ trode. This instrument was made either in June or July, 1S77. It is a modified Reiss transmitter. Q. 1H0. Have you over made use of a diaphragm of very thin sheet metal, which required to bo stretched in order to he used ; if so, when and with what results? A. I have used a diaphragm of exceedingly thin sheet iron, which required to he stretched, ns far back as December, 1875. It was used as a receiver. The magnet stretched it so that it became useless. I have also used tiio same in connection with a trans¬ mitter in 1870. I think, perhaps, August, 1870. I have used diaphragms of all thicknesses from thin tin, which had to bo stretched, up to matcriul which it was utmeu- ing to be stretched were first used on my EMI I HU A AND A’. These wore iron. Q 107. In your opinion, after the numerous experi¬ ments which you have made, is a diaphragm made of very thin sheet metal, fo thin that it required to be stretched, capable of use successfully in the ordinary telephone in Btrumcnts required for business purposes ; and giro your reason for any opinion ? A. Such a diaphragm is not practicable for business purposes except somo means are provided whereby the diaphragm is under constant tension so that any expan¬ sions or any stretchings of the metal will ho taken up by these means. If no menus are provided, but the dia¬ phragm originally stretched unprovided with means for future compensation then the effect of the sound waves and wind rushes in the act of speaking will sfreteh tho diaphragm and buckle it, so that its centre will be out of the line in which it originally was when first stretched. There will also be extra sounds given out by the dia¬ phragm and transmitted when used as a transmitter, due to the loose character of the diaphragm. Q. 138. In your opinion is a metallic diaphragm of a telephone practically useful made of thin sheet metal attached around its edges tp a case and in which the thin sheet metal lias numerous buckles and inequalities that prevent tho surface being a true plane ? A. No, sir; I do not think such a diaphragm is prac¬ ticable if the metal is very thin and it has theso buckles. It would bo very difficult to keep the circuit controlling electrode in adjustment with relation to the diaphragm. It would also transmit extra wave, due to tho action of air rushes from the mouth upon tho diaphragm in tho net of speaking. Q. 1U9. Suppose an instrument is niado with a case into which the sound is directed, a diaphragm of thin 279 /^tua. (luy-4- — a opposite too centre or tho diaphragm so tlmt after lull mnoimt of nso the point penetrated the thin sheet nl, could such tin instrument lie practically used ns n phone? .. I should Buy that it would ho self-evident that it d not he used practically. 1411. Tf an acoustic instrument is adjusted in such inner that the vibration of a diaphragm under the nc- of air waves produce an electric spark between a act point und the electrode on the diaphragm, is i an instrument adapted to correct reproduction hv a net mid diaphragm at tho receiving station of nrticn- f a button of compressed lamp black, or of any known nntcria) which conducts clcctrie current, and finely divid- i:l nr powdered, and moulded into a button, and placed letwccn two electrodes in an electric circuit, or a solid nitton of metal, tho surfaces of which are coated with a nyer of linely divided conducting material, or if the sur- 'accoflhe solid button be roughened, to ns to present mmmerable points, and placed between two electrodes, n a dosed clcctriu circuit, a certain initial pressure of ho two electrodes upon the two sides of the button will illow the electric current to pass from the electrode on mo side, through a number of points to the button, and , thence through tho button out through points to the ether electrode. If the pressure between the electrodes he now in- sraase I, a greater number of points will come in contact with electrodes, and a greater number of routes will be [lrerentod for the passage of the oloctric current. If the pressure is still further increased, moro points will come in contact, a greater number of routes will be presented for tho passage of the electric current, hence at every incroaso of pressure the electric resistance of the electrodes and buttons, as a whole, will lie decreased; if the surface of tho button between tho ole. trodes is formed oi very course particles, a compression due to a vibration ot diaphragm, will diminish the resistance by throwing in ' circuit u greater number of routes for tho passage of tho euiTont, and a wavo will be transmitted through the cir-. suit corresponding in time and amplitude or energy of the sound wave striking the diaphragm ; but in the caso if a surface forms l of ecirso points tho purity of tho wave will he affected, because tho electro magnet of tho recei ver, when tho particles are very coarse, is capablo of reproducing the passage of one coarse point, mid another in contest with ths electrodes, and tho wave, instead of being pure, is nude in of a number of clang vibrations or grating sounds, which might be represented graphic- CW^rtns CARBON TELEPHONE, EDISON’S EXIIIBIL THREE SPRING ELECTRODES, OCT., 1877 ; EDI¬ SON'S ARTICULATING TRANSMITTER, OCT., 1877. EDISON’S EXHIBIT SPRINGS 42-11. EDISON’S DIAPHRAGM 105-13. EDISON’S EXHIBIT DIAPHRAGM 17-13. EDISON’S EXHIBIT SPRING, MARCH, 1877. EDISON’S EXHIBIT MICA DIAPHRAGM. EDISON’S EXHIBIT LOOSE DIAPHRAGM, SEPT., 1877. A. I hero prodtico mi Instrument made about Eeh. 17, 1877, minted EDISON’S EXHIBIT INSTRUMENT 14-11. This instrument is illustrated in SKETCH 14-11. It consists of a number of thin strips of metal, their tension being adjustable, the whole forming a sort ot a diaphragm placed in front of a box in such a manner that speaking into the box would set the strips in vibra¬ tion. Platina points upon the end of contact screws formed one electrode, and the strips the other electrode. A contract screw was adjusted in front of the strips; each strip was provided with a contact screw. All of the screws were connected through resistance with the cir¬ cuit. This was mi attempt to vary the resistance of a circuit by a multiplicity of contacts. I hero produce a portion of an instrument, marked EDISON’S EXHIBIT INSTRUMENT 10-1 1. This device is shown in EXHIBIT 10-1 1 , Ecbrnnry 11, 1817, bottom figure, right hand corner. This also was an attempt to vary the resistance of a circuit by a multiplicity of contact points, ns more fully set forth in my patent 203,013 figures 1, 2 and 3. I hero produce an instrument, marked EDISON’S EXHIBIT INSTRUMENT TELEPHONE RELAY 58-11. One half dozen of those instruments wore made, and the description of this instrument is published in the EDISON’S EXHIBIT INSTRUMENT 102-13 cor- isponds with the resistance coil shown in the middle ;nro on EXHIBIT 102-13, and with the side of this o spring connected with the diaphragm came in con- The insulating material on one side being removed so to allow of metallic contact between the helix and the ring, the vibration of the diaphragm acted to cut in d out resistance according to tho amplitude of move- ont thereof. EDISON’S EXHIBIT INSTRUMENT 112-13 is nilar to the instrument 102-13, only it is more per- litly constructed. They did not work 'satisfactorily in comparison with a other instruments I had made wherein carbon was ed. EXHIBIT INSTRUMENT 121-13, Nov. 20, 1S77 chamber, wlion such chamber wns lined nt nil, that was l not capable of rc-inforcing some particular sound when used ns n receiver. Neither do I remember of any such I instrument in 1870. In fact, there is no telephone re¬ ceiver which is not enpiiblo of re-inforeine some nartien- xQ. ISO. Myqncstion naked about receivers not par¬ ticularly intended to re-inforce n particular sound, in the sense in which you have just used tlioBe words in your 178tli answer. Please answer my 179th question in that sense, if you have not already done so 1 A. I have used a receiver in 18 To, I think in Dcccm- ber, in which no attempt was made to rc-inforcc any particular tone: I refor to Exhibit A. I will look at the sketches ami caveats agon, _ . xQ. 181. When did you first use a receiver consisting merely of a loose plate laid on a support over an electro magnet substantially like that shown in your application 11-1? A. The precise thing is shown in two sketches, Atig- 2-1, 1877, J ID-12 and 1 14-12. “ Thu instrument shown in these two sketches were i made within n few days after the date of these exhibits.. / In the instrument nindu tho diaphragms were loosely being lost. A loose diaphragm, that is, a diaphragm free to ex¬ pand and not secured rigidly at its edges, is shown in my EXHIBIT. SKETCH 191-1 1, dated dune 20, 1877, it is the top figure on the sketch. Another one is shown in 199-11, , rune 27,1877. These instruments were made within a day or two after making the sketch. xQ. 1S2. In whose handwriting arc the words “ fig. 15, fig. 10,” on tho exhibit sketches for Caveat 75 ? A. It is my handwriting. xQ. 188. The figures so numbered on that sketch are the same as the figures which hear the same numbers in ' cz£otsuls o6^co • If the key a was operated very rapidly, and the ton- n of the spring « very great, the lover/ might vibrato i electrode / without coining in contact with the elec- do !. Whether it touched either limiting point would lend upon the number of breaks made in the cell con¬ ning the battery h. <Q. 1!)2. When operated as a telegraph operator uld ordinarily operatu it, in practically sending tclc- pli messages, would or would not the armature lover uc down until it reached some stop? \. It would. ; iQ. 108. When did you first uso in a telephone the ss of soil, fibre, rubbed with plumbago or other eejuiv- at, which I believe you have called “ Hull 1” \. I think tho date is August 7, 1877. See sketch libit 9-1-12. ;Q. 19-1. When did you first use a soft carbon button ile of lampblack or other similar material"; \. I think I used a lampblack button in February or rch, 1S77- It was certainly earlier than March 25, :Q. 195. Did you get any good result out of it then ! V. No, sir; it did not work at all; it was common iphluck. :Q. 19(1. When did you first use lampblack buttons ! \. 1 think it was about October (I, 1877. I think it i that carbon which was used in exhibit IS— 13. ft is i mentioned in the complete specification of my llrit- patent No. 2999, sworn to the 24th day of December, 7. It is barely possible that I did not use the spe- !y prepared lampblack until November or December, YlA/v^J (aaajaaj Pal-, rfty? - ^Vdst "* M-cute^ is*; A. r think in July, 1875 j I first talked with lain on ,4 the subject of transmitting urtienlnte speech. ' xQ. 211. My question was intended to sisk you when you first talked with him about speaking telephones which you had made ? A. If you mean transmitters, I think it was in March or April, 1870. •\Q, 212. Which of your agreements with the Western ■ Union first refers in terms or in so ninny words to the 7 transmission of articulate speech by means of electricity? A. When they bought out my interest in speaking telephones hy the contract of May 81st, 1S78, which in¬ ventions were made under the contract of December 14, 1875. xQ. 213. In your apparatus shown in patent 141,777, plcasu tell me whether any skilled electrician or tele¬ grapher would practically construct or expect to work tho instrument Fig. 1 without some stop to prevent tho armature coming in contact with tho cores of the electro magnet ? A. Yes, it would be nn easy matter to use a hollow helix with a core attracted inwardly, axially so that magnetic attraction would cease at a centre point. ® If such an axial magnet were used it would be unnec¬ essary to have any downwardly acting stop. Adjourned to Saturday, Nov. 13, 1SS0, lit 10* o’eloek A. M. S. L. G. Laboratory of T. A. Edison, Mkni.o Park, N. J., Nov. 13,1880. Met. pursuant to adjournment ; same parties present, and Mr. F. II. Betts, counsel for Irwin mid Volkers. xQ. 214. My question related solely to the nnnnmtus xQ. 215. In the apparatus shown in Fig. 1 of said pat¬ ent would any ordinary constructor of electrical instru- . nients, or any ordinary telegraph operator, practically construct or expect to work the instrument Fig. I without some stop to prevent tho armature coming in contact with the electro-magnet c f A. That would depend upon what use he was going to put the instrument to. Tho apparatus is for tho transmission of uiidiilatury currents in a closed circuit without breaking tho same. It can be applied to many uses, if employed in a telephone tho limiting stop i. would still lie used. xQ2l(>. Please to look at your patent 182-000, dated Oct. loth, 18', (i, application filed May 10, 1870, and tell me whether when it is in practical use the vibrations of the reed n will or will not always have the same ampli¬ tude 1 A. No, sir ; they do not have the samo amplitude, they constantly vary in their amplitude • XCJ2I7. Why; A. For the reason that when a series of vibrations pro- eecd from the transmitting station over tho line to form : a dash the first few waves give it nn exceedingly small amplitude and each succeeding wave increases that am¬ plitude up to n point where tho amplitude will become constant after tho lynves have ceased coming over the lino the fork decreases its amplitude down to zero gradually. xQ2!8. Plcaso nnswor the same question ns to the the fork decreases its amplitude down to zero gradually. xQ2I8. Plcaso nnswor the same question ns to the reed d 1 A. Tho reed d. will mnko various amplitudes of vibra¬ tions according to the strength of the battery, if there is a strong battery it may make vibrations of a quarter of nil inch and ns the battery weakens tho length of os- ^ t(ssd» 'J.tUinAj (lUd) cliamcnl equivalent of n spring in tin's caso is appli tlioruin, tlio initial pressure between tlio electrodes beii obtained by attraction of gravitation, tlio diiforenco 1 tween an instrninent of tins cliiiractcr iiaving a lev and one Iiaving a spring, would bo that tlio latter migl if properly constructed, lie placed in any positio whereas, if gravitation was used to produce the init: pressure between tin* electrodes, it must be placed in o particular position. I do not wish it to be inferred til because I have no exhibit that I did not use spring eb trades even before this date, which would meet the coil in case I. My impression is that I did have such clc trades previous to July -JO, 1870. In September ai October, I remember distinctly I employed several ole trades, consisting of springs one behind the other, £ pressure between such springs being obtained by ml jus ing them toward the diaphragm. The exhibit 102- shows a plan of a device to amplify the motions of t electrodes by leverage instead of working them direct upon the diaphragm. (The same objection is made as to answ Ho. 221; also that the answer is not l sponsive to the question.) xQ. 221). Question repeated. A. That question has been fully answered, except . tbn as I have stated, the levers are the mechanical equivu cuts of a spring in all respects in their applications ti this purpose, tlio initial pressure being capable of liein varied by gravitation and the movement of the instn xQ. am. Are you unable to point out any sketch, e: hibit or instrument made .subsequent to September i October, I87(i, embodying the features called for in tl S. L. GRIFFIN, /lw> Jjj- -an xy. W lint is the mechanical cause difficulty? A. As I Imvo stated thoro is no means pn eronso or diminish tlio strength of the enri the electrodes Bullicicnt to make it a praetic for the transmission of artienlate speech, or which could lie called in any sense a pi Q ouJr<rv^ ^ ) 23(1 xQ. Can you not answer tlio ipicstion lically i A. I will if you will state it more specifies 237 xQ What specific addition or inodific lieiss iiistriinieiit, as described in those pul 371 necessary to adapt it to transmit articulate sp A. I have found that carbon placed betwe trades makes it n very good transmitter. 23S xQ. If one of tlio electrodes of the mitter ns described in those publications w carbon, would it then be adapted to the trail articulate speech ? " A. Yes, sir. I 2 .9 xQ. Suppose the electrodes of the Iiei ter were made of iron instead of platinum, a in such publication. Would the transniitti adapted to transmit articulate speech i A. Perhaps something could lie transuiittc an instrument witli iron electrodes, providin face of the iron was proto oxydized it would i 372 poor affair ns a transmitter of articulate speei 2-10 xQ. Why would it transmit aiticulale all, if iron electrodes were used instead of pi A. Localise the surface being proto-oxide a material of high resitance, and being goner would present a number of points which mi under certain conditions ns to adjustment, „ and then being transmitted, but 1 think tli words were transmitted it would have to bo in the presont state of the art, when we know "about telephones. — 11 xQ. Suppose one oi the eleetrodos of tlio Reiss emitters, ns described in said publication wero made roll, and the other of platinum, would tlio transimt- ic adapted to transmit articulate speech? . If you mean adapted as a regular transmitter, I no; blit if you incaii could two experts in tlio pres- state of the art transmit a word now and then, then (&04 13 xQ. When ? . I think about July 187(1. 1+ xQ. Did you succeed hi transmitting a I it at that time ? . I can’t say ; we generally knew what was knowing wliat was coming even a Reiss pare and simple, transmits and reproduce cli sound almost like that which was being lint when it was attempted to transmit s eh the receiver tlid not know, it was very so 15 xQ. Like which drawing in Prescott’s wi dug tlie Reiss transmitter was the one wliii I with iron electrodes, about July, lSTItf . It was similar to that shown on page 13. 10 xQ. Have you got that instrument, or one i rf&vO inly presented in this cast s used at that time; I w e an instrument that did I7*Q. In your answers n ; we made a great nmulicr of I don’t know whether I have got nr whether some of my exhibits is ease have-not got somo of the ; I would not he liable to pre- t did not work satisfactory, avers to the 233d question, you jjr a ^ 2f>7xQ. When did v»u reduce tlmt ii /n^rCo^Aj) eAX*vtfO^ tico with tlmt degree of success wliiel. consider yourself ns having made it in A. It was in a practical form in Pen t did not make it work owing to pccnlia since the present state of the art lias 1 have made instruments of that kind w isfactorily us regards articulate speed i, tory ns to the voluine ol sound. 258xQ. When Hrst did von ever pro transmitter which worked to the satisfu besides yourself in transmitting articiil A. If you mean satisfactory in the s fulfil my contract with the Western U give them a practical telephone I slmiili ruary or March, 1877. As for the wall not think even now it would lie satisfu cA.^ l&Tj j iTj i — .g.gj. 'J that coniiilete in lSTii, . 2o!)xQ. I mean “satisfactory” in tin you used the word “satisfaction” in ani question. Please answer thu •JfiStli qu dorstnnding? A. I think in Juno or July. IS7I1. wc which transmitted articulate speech vet satisfactory as far ns it went as a telep hut was not satisfactory as an instrui 2G0xQ. Which instrument was that; poil Exhibitor sketch which illustrates it? A. The sketch marked Exhibit 3-1(1 illustii experiments tried in 1S7G. 2(1 1 xQ Is that tho ono you referred to in y A. That is the only sketch I can find of tho instru¬ ment 1 referred to. 2(12 xQ. Have you any instruments corresponding with that sketch ? A. Hot exactly corresponding to that instrument. 1 linvo an exhibit called Water Telephone, which is anal¬ ogous to this. 2GS xQ. Is the Exhibit Water Telephone the nearest thing you have to instrument shown in Exhibit 3- III ? A. Yes, sir. 2114 ,\Q. Is a skin or animal membrane diaphragm capable of use successfully in telephone instruments re¬ quired for ordinary business purposes ? A. Ho, sir, not as ordinarily arranged ; of course they would work after a fashion. 2G5 xQ. Have you ever known or heard of one that was so arranged as to bo capable of use successfully for ordinary business purposes? A. Yes, sir, 1 have, but it is not so practical as a me¬ tallic diaphragm, as it is more liable to "ot out of ad¬ justment, as 1 have seen it arranged. I do not here refer to a string telephone. 2GG xQ. When and where did you over see or hear of this ? A. As far as a diaphragm alono is concerned, made of I I . 1 L-d it in 1875. I used it at various times in 187(1, but if you refer to its connection with other instruments, to make a transmitting telephone for public use, then I think the combination was made by myself in February or March, 1877. 2G7 xQ. Point out the sketch or exhibit which illus¬ trates tho tclcphouo spoken of by you, as made in Feb¬ ruary or Mureli, 1877. U , 3-io, 4 trvlu) J6 /vyr Co-wdf '■ tyh-eA t j y -fycoJh TA^ ir— // is afterwards ill :i ii^uil . iiml embodied in iliic 1 1 i:i i ill ra^m lining substituted. In para- t application, lliu following occurs: “The (/, are appliuil at the side or end of their ies. mill tlic.-e slnmlil lie provided with r. /', and ligltlcning-srroyvs </■ somewhat r a k(;llliMiiiiiiiv.suL_lLint_lli« diaphragms ^according to tlic~si/.c nf tin* instrument.’’ In I lie ■tell 8-11, the top tiiriirn i>H llie left-hand side Ulus¬ es a means uf sKljust i nir the tension of the diaphragm, I have staled, l arilimeiil diaphragms have lieen (Imjls I Kxhihit S-l 1. willi a parchment diaphragm, for any linsi ness purposes ; A. 1 used it on a telegraph wire and transniilted and reprndueed articulate speech with such a degree of suc¬ cess that it. was eapalde of use for business purposes, but 1 I did not permit it to be used for business purposes — that is to say, that particular instrument. 270 xQ. Is a stretched membrane diaphragm capable •of use successfully for business purposes without means being provided for adjusting its tension and thereby keeping it in a state of tension ? A. That will depend on the character for inciius fin increasing and doercasing the strength of the current. V. If the means employed for varying the resistance the circuit are such as to allow of the transmission of ieiilate speech when great pressure is placed upon the diluent diaphragm, then this pressure keeps tlio phragni in its state of tension mid the instrument tild operate, or if, on the other hand, hut light pres e could lie placed upon the diaphragm, and the devices id were for transmitting articulate speech was not very isitive, aud it was necessary to talk loud, then the istiirc of the hrenth would cause a warping of the ph'fngni nntl throw the instrument out of ndpistiuoiii. ;nin, if the tension regulator was very sensitive, the •son could stand off a great distance, so as to prevent i moist nrc of the breath from coming in contact with t diaphragm. If a Reiss transmitter was used with a rehment diaphragm, and no means were provided for jping the diaphragm in a state of tension, it would in luickle up by the, effects of moisture and throw the tnunciit out of adjustment when provided with a id point, or transmit a great many extra sounds not iired when a flexible spring contact electrode was id; besides, when buckled and flabby, tlio wind dies would tend to throw tlio electrode out of adjust- (^sr ^ 272 Rc-D. Q. You speak, hi an answer to cross-inter- 393 jatoay 23S, of an instrument similar to the 3\eiss - usuiitter, with one oi' tlio electrodes of carbon ; state i ictlicr or not the Reiss transmitter would be adapted the practical transmission of articulate speech if the OjJb-CKA^U night causa a rebound, as in the instruments i llustratcd in the Speaking Telephone by Mr. Prescott i Objoetoil to by eoiinsel for Irwin & Voolker as involving an assumption op- 1- A. I ilo not think it il I I l i | a I I t c t if no means wore taken to prevent or reduce to a con¬ siderable extent the rebound of the electrodes, but then if carbon wore used as an electrode it would not l>o a Reiss transmitter. 27!1 R-D.Q. You speak of considering nu invention complete when it is in a form adapted to public use. State whether or not in your efforts to produce a tele¬ phone instrument, you lessenud or suspended your efforts at any time when you had obtained an instrument capa¬ ble of producing articulate speech, but which might have been discovered as liable to become injured wlion handled in tlio ordinary manner by tho public. (flCixzZi A. I never lessened my efforts to make a telephone which would be practical in the hands of tho public from IS75 up to 1873. It must lie remembered that it was Win. Orton who decided whether an instrument was Ipractic.il or not. f submitted several instruments to him which I thought woro practical, but which lie de¬ cided wore not, and T know that much worse instru¬ ments than I presented to Mr. Orton aro working to-day, and people are paying for tho use of them now. 271 R-D.Q. Tu connection with your testimony you have spoken in somo instances of your experiments Will you please define your understanding of that word, so far as you have used tho same ? A. [ should say that an experiment was an effort to accomplish a certain object; if the object was not accom¬ plished, tho experiment was a failure, but if tho object was accomplished, the experiment was a success^. 275 II-D.Q. In connection with your telephones, what was tho object sought by you to ho accomplished ? A. Tho production of a speaking telephone, callable I of practical use— one tlmTllie public would pay the Western Union for, and one the WcstoriTtlmon wonTiM "^TURd). Q. Relerring, then, to your answer to re¬ direct question 27-1, aro we to understand that you uso the term experiment in tho sense referred to in your 277 R-D. Q. In answer to cross-interrogatory 250 and 251 you speak of the movement of a drum-stick when free to follow its own motions. State what yon refer to ns tho dovico giving motion to the drum-stick 2 A, I linvo already stated that it was tho diaphragm or drum bend; The witness states that Mr. Prescott’s hook on the Telephono' was published before August, 1878, and lie tliiuks in July, 1878. LABORATORY OF THOMAS A. EDISON, Mknlo.I'akk, Nkw ,1 husky, Friday, Nov. IStli, JS80. CiiAin.ia Batciiei-ou being duly sworn, deposes ni: says, in answer to interrogatories proposed by L. W. So roll, Esq., roiinsei for Mr. Edison, ns follows: 1. Q. Flense state name, age, residence and oeeup A. My name is Charles Batchelor, age ilfi, residem Menlo Park, N. <T. ; assistant to Thomas A. Edisrn. 2. Q. llow long have you been employed by him ? A. Since 1870. it. Q. State wliat lias been the practice inJMr. Edison establishments in regard to making, dating and witnc ing sketches mid drawings? A. The drawings were generally made at about the sail time that they are dated and signed: sometimes the drawings were made n day or two before showing to li assistants, but were dated and witnessed by his nssistan generally iniiner intely after their explanation; the dim ings were' generally accompanied by an order to mal the instruments or experiments illustrated. As far as know the drawings were never ante-dated. If a drat ing bad no dato it was left without, or the date of i limling put on it. ,|, (1. About wliat time ilid Mr. Edison commence construct any instrument adapted to transmit soul waves electrically ? A. About the end of .Tilly, 1875. r,. Q. Wliat, if any information, was possessed by yi and Mr. Edison previous to the time ot commencing experiment, which showed wliat others had done in tl general line A. 1 do not. know in regard to what Mr. Edison km and I had little information on the subject, but wliat tool read nr beard of the Reis’s telephone. tins subject aided by e doing in August or ilerstand the sketch KXUrmT‘,TUANSLATIONKKIS,STEMSLMIOXK" hi show 1 A. Tlio top ligure represented a chamber with a dia¬ phragm or membrane on the lower end of it connected uno prong of a tuning fork, the other prong of tlio fork baring a point extending down into a cup of mercury, tins idea being to transmit sound waves from the dia¬ phragm into the mercury which does not show itself in a circuit, but I judge that, was what was intended. Die middle figure allows a diaphragm similar to Reis’s telephone, to which was fastened one end of a lover, tlio illicr end of which dipped into a glass of water and formed one electrode of a circuit; the other eleetrodo iicing placed directly under the first. This circuit in- ditdcd liattery and a magnet. The third figure represents i resonant chamber with a diaphragm on its end, to which was fastened a small piece of metal in flic shapo >f a knife edge; directly opposite mid adjustable to¬ wards it was a similar knife edge of metal, above whieli i funnel was placed, so that water or other liquids could Irop and stay by capillary attraction butween the I wo inife-edges ; these two knife-edges, I also supposed, were intended to lie included in an electric circuit also, with battery and sounder. I do not know of these in- itruments being made as early ns the date I speak of ; limilar instruments were iiiadu after thill date. 13 <i- I hure produce the mass of exhibits that havo icen put in this ease by Mr. Edison in giving his testi- nony; upon many of them the name of Charles natch- dor is written, state, if you know, who wrote that name md for what purpose; mid state also whether or not the ixhihits have been frequently seen by you silica the rc- pcctive dates that they hear ; and state also whether or lot these exhibits have been changed m any essential iiirtieuliir since they wore made ' A. I wrote my name on them ns a witness that the Irawings were made at (ho timu the respective dates vcrc jmt upon them. Most of the exhibits have been icon by me frequently siuce they were made, and 1 do cr. KMllBI l S-0 illustrates a resonant ease, on is mounted a timing fork, also a magnet noting < jirong of (lie tuning fork, also a contact ami adjustment for making and breaking i with a point on one prong of the fork. When tli net attracted one prong of the fork that held the of contact, it broke the contact between the sprii tlie point on the fork, allowing the fork to resu natural position in consequence ot the circuit tl the spool lieing opened; ns tlio fork resumed its position it Hindu contact again witli the spring w turn closed the circuit through tliu spools. This pented as often ns the vibrating time of tile fork allow of. lii Q. flense state in that connection, whether the spring with which the point at the end of the fork came in contact acted in the same ninnner as point would net, and if not, why not? A. The contact spring is made flexible, in ordi it shall not dampen the fork, which a rigid point wo the object being to give ns free a movement as p to the fork. hi Q. Please state in that connection, whether tlie action of a contact spring would be the same have stated in your last answer if a diaphragm wi stituted for tlie vibrating fork? A. Tf a diaphragm was substituted for the fori point was upon the diaphragm the action of the will lie the same* the diaphragm being adapted tov There was an electric circuit running through the and the two contact points. There were one or t striiments made like EXHI BIT S-0 ; and put in pi operation about November, 1 S75. 1 do not rcmonil how those instruments were put in circuit, but so this spring is concerned the vibrations of the fork would allow of the current to pass in either i two directions, the end of the vibrating spring ac open mid close the circuit when moved by tlie poi the fork. Isigncdnml put tlie data on this EX1IJB1 Mow llt,IS7.r». In EXHIBIT 0-!) is represented n tuning fork upon a resonant case to the end of one prong of deli a German silver wire spring is fastened, the ot d of which is fast to an adjustable terminal the pn the lark, the (iorman silver spring being included i sed circuit with a battery ami sounder. Thu writ the exhibit explains what Mr. Edison wished to ncly, to increase and decrease the resistance ofa do; suit and produce a rise and fall of tension in such i t by the difference in resistance of the German sil •ing when its coils were touching each other or i ft. This instrument was made and worked satisl y as far as I remember. I signed my name on t libit and wrote the date, Mov. 10, I87f>, on the sa >nt that date. EX 1 1 1 HIT lll-!> represents a tuning f( 'tinted on a resonant case free to vibrate ; on the I the same case are mounted four levers with cent ills at their ends which rest against four contact poi toned also on top of the case. A closed circuit isslio hiding all these points and levers and a battery a iiuler. The object of the four contact |H>ints bei t the vibrations of the tuning fork or of the resom e would cause the contact, points to slightly open so, thus making a difference of resistance in that p not the circuit, including the points and a rise a of tension in the circuit generally, the circuit net ng entirely broken, and the sounder being opernt rise and fall of tension only. The upper left ha ■re on Exhibit KM) represents a timing fork with lit on the end of one prong pointing downwards direction of its vibration and touching a globule with one of the many forks or reeds that wo had at that curv. Another point standing horizontally and poi towards the mercury is also shown. It is intend how that the vibrations of the fork will cause t curv globule to bulge out and make contact with t zontal contact point to a greater or less extent a i produce a rise mid fall of tension in a circuit sh these points and a globule of mercury are encl I believe this experiment wns tried by Mr. Edis ml was being done, and frequently liolpud during tin gilts. EXHIBIT It- 10 I Imve not signed, lint I liulicvi at a senes ol experiments ivero tried about tliat tiini emmeutiou with a telephone that wo always dcsig ted ns water telephones, in wliieli tho transmitter vn d the tension of the current in a closed circuit, by ■•ansof tv.-o electrodes, he tween which was plaeed water a salt and water, or other chemicals, ami also papci united with dilTcrcnt chemicals ; also felts mu! otlic ings, moistened with difTereut ehcmicals. The more int of the diaphragm pressing more or less ngainsl ;se snhstanees, caused their resistance to he decrease! increased proportionate to the amplitude of the vihni u of the diaphragm. I rememher such an inslrii int being used as two vibrating reeds and resonnnl imbers. in the manner shown on EXHIBIT go- 1 II • name is not' on this. EXHIBIT iiS-ltl explains itself. I put my name upon it the date, July 2(1, IS7ti, nr thereabouts, hut 1 do not iicmhcr whether the instrument was made. Thu in- mnent shown in EXHIBIT 711-10 I rememher was de up from two or three other instruments. I remem- ' the instrument, hut as my name is not on the drawing aiinot sav exactly when it was made. I have seen the living of EXHIBIT lntt-10 frequently, hut. I do not nemlier whether the instrument was made or not. 10 Q, Please look through tho other exhibits here isent and name which ones you identify ns having been de at the date which the respective exhibits bear, and icb ones you have signed ? iV. EXHIBIT i»— 1 1 , is one of Adams’ drawings, 1 1 do not remember whether the instrument was made ictly in that shape, but I know that for some time ivious to my coming back to tho laboratory in Decern- •, 1870, he had been working with jm I hods telephonic transmission. EXHIBIT 0-11,1 identify signature put on there February 0, 1 S77,or thereabouts; llustrates u method of incruasiiiL' and deerensino the springs, with rollers i or other conduet- of tho circuit, tho ig tho length of the lade myself, and it receiver used in this in front of a din- : chamber, with an Mbit is dated Fob- as a previous draw- cular style of trans¬ fer Mr. Edison as to work altogether iristtnas, 1 87ii. iruaryt), 1877, 1 re- and that it worked, liu exhibit when it lint description has 1 1, and 10-1 1, and , They illustrate the nice or batteries by order to accomplish : in a circuit which ISON’S EXHIBIT represented on EX- uyself and Adams which was February f> — 1 1, 20-11, 21-11. tify as bearing my us which are on the corresponding to all 17-11, which I an y my signature, am cuts well known t< the Exhibits. Sour A. “EDISON'S EXHIBIT CAB BOX KllKD- I'AT” wus mndo and used iis f;ir Imek ns 1878, I •lieve. It was used ns u resistance for some enldo periments. In tins ease the carbon aeted as a rcsist- lee in the electric circuit, and the resistance was enter or less according to the compactness of the rlion. “EDI SOU’S EXHIBIT B” was made nut November or December, IS7f>, and was used as a leplionc receiver. The strip of metal that passed ross the end of the resonant tube was polarized by tho rinaneiit magnet to which it was attached, and was brated in front of the resonant tube by an electro agnet worked by an induction current from the distant ition. 'l’he instrument was used, but I do not remem- ir with wluit degree of success. As far ns I can see, the striuncnt is now in the same condition ns when made, cept from the effects of rust and dirt mid the parts ,ve become loose. “EDISON’S EXHIBIT A* TUBE” I recognize as (longing to three instruments spoken of ns having ion made in December, 187a. The in t 11 EDISON’S EXHIBIT WATER TELEPHONE,” I (lieve, was made by Adams previous to the month of ctoher, 1870. I do not remember the instrument :iug made, but I remember bis working for a long lie on the principle of transmission that is ustnited by this Exhibit. This instrument, except in u looseness of its part, and its luck of adjustment, re¬ sins the same as far as I know, as when first seen by e. Some time after I came back to work in the Iabo- tory, which was before Christmas, 1870, this instru- eut I believe was taken down from a shelf and rccog- zed by Adams at the time ns one that lie had mndo evionsly. f think Adams found the instrument him- If, and 1 do not believe it was made in the laboratory iring the time intervening between my coming back and i finding. » EDISON’S EXHI BIT 1 17-151 ” I renieni- ir being mndo. I recognize it as one that was mndo id used about Nov. It), 1877. It consisted of a paper rip moistened with a chemical solution kept in a chain- ir underneath, which paper strip was held between a utiuuui electrode on the top of the coll and a platinum red spring fastened to a diaphragm, and two electrodes platinum, and the moistened atrip being included in a ;>scd circuit of a telephone transmitter. “EDISON’S XIII BIT INSTRUMENT 10-11 ” is part of an instrii- ent in which the cutting in and out of resistance or lmt- ry was used to vary the tension in a closed electric rciiit. Those springs being made to throw in and out such sistauce or battery by the vibrations of a diaphragm tented bv the human voice. “EDISON’S EXHIBIT 1ST BUM ENT, 1 12-1 It,” is part of an instrument that ib made about Nov. 10, 1877, and consists of a small ool of German silver wire mounted upon a rubber plate liicli rubber plate was arranged on the instrument so to be adjustable to and from a diaphragm in front and ngthwise with this spool was placed a spring, which ns fastened ton metallic post at one end of the spool, lie other end of the spring being free to move against o spool so as to touch one or all convolutions in the hole length of the spool. The free end of this spring us fastened to and actuated by a connection to the ccn- r of a diaphragm and speaking chamber. The object the instrument being to vary the tension of a current electricity in a closed electric circuit by means of cut- Iig out or putting in more or less of the convolutions of io wire on the s|M)ol, the said spool being enclosed in a instantly closed circuit, with a magnet battery. 1 rumcm. ir the instrument and that it worked well. “ EDISON’S XII I BIT I NSTRUMENT 121-13,” is part of an in- rumeiit which workssimilarly to EXHIBIT 112-151, tho tlurence being that in this ease the spring was made to i vc a greater or less intimacy of contact upon a strip o| umbairo ill the form of a pencil lead in place of tho spool 237 7ll<J Cl I A I! I. ICS HATCH Kt.Olt. shown in INSTRUMENT 1 12-13. The strip of pencil lead was included in a circuit similar to the speed spoken of in 1 12-13, and the action of a spring was to make con¬ nection with more or less of the lead, ami allowing part of thu current to go through the spring iustend of the lead, thus altering the tension of an olectric current in a constantly elosud circuit. The instrument shown “EDISON’S EXHIBIT IN¬ STRUMENT (17-13 is part of an instrument, which 1 well remember Mr. Adams making and Irving with dilfercnt chemicals,' and papers soaked with chemi¬ cals, as a telephone transmitter. The lever holding the 707 lelt washer projected out a little further, ns shown in Ex¬ hibit (17-13, and was connected to the diaphragm and speaking chamber. - I do not remember what results were gut with this instrument, lint. I remember its usu by him. EDISON’S EXHIBIT INSTRUMENT 23-13 is un instrument made about Oct. 17, 1377, and is illustrated hv a series of sketches marked 21-13, 22-13, 23-13. 21-13, 2.1-13. My name is not on these sketches, but I remember them be¬ ing made in the Western Union Telegraph office, in Jer¬ sey Cot v. on that date. The instrument consists of a polarized U-shaped bar, to one extremity of which is fastened a diaphragm and resonant chamber, and to the other extremity of the U shaped liar, which is shorter than the lirst, is pivoted a bar of iron, which is free to 70g move towards and is directly opposite the center of thu diaphragm. Across the U-shaped bar is a hard rubber bridge, carrying at its center and towards the center of a diaphragm, a brass adjusting screw, in the end of the brass adjusting screw, nearest the diaphragm, has been a carbon button, on which the aforesaid pivoted lever was held by a spiral spring. This carbon button was in¬ cluded in a closed circuit with a, battery; the action of this instrument was as follows: AVlicn not in use thu lever pressed upon the carbon button with an initial pressure, and the two were adjusted close to the dia¬ phragm; when the diaphragm was actuated by the voice, it approached nearer and receded from the lover, altcr- iii.r it s pressure on the carbon button by the movement of the diaphragm, acting by magnetism, on the lever that pressed upon the carbon, thus varying the tension of tho electric current in a closed circuit, ot which the carbon is a part. I recognize the two diaphragms marked “ EX- 1IIBIT IRON DIAPHRAGM AND SPRING,” and “EXHIBIT IRON DIAPHRAGM” as two of the diaphragms that we used in our experiments. “EDI¬ SON’S EXHIBIT INSTRUMENT 30-13,” I rccognizo as an instrument that was made about Sept. 22d, IS77, and it is illustrated on the drawing marked EDISON’S 7j(l EXHIBIT 3(1-13. It. is a good tolepliono trans¬ mitter, and works in the following manner: A dia¬ phragm fastened to a resonant chamber, has at its center a number of silk Hull’s, coated pvitli plumbago, or carbon, a lover pivoted- oil one side of the diaphragm, and reach¬ ing across its face, is free to move to and from tho dia¬ phragm. In the center of this lever, and fastened to it, is a" small hard rubber cup, carrying an electrode, and encasing silk “llulis’’ on the diaphragm ; this lever is adjiistiblo to and from tho diaphragm bv a spring at the other extremity of it. The tension of the lever being adjustable by a nut on a screw passing through such spring. The pluni- tiagoed thills were included in a closed circuit with a lint- - j j tery and the tension of tho electric current in this closed circuit by the pressure ot the diaphragm upon the plum, bagoed Hull when it. was vibrated by Uie human voice. I recognize “EDISON’S EXHIBIT INSTRUMENT 100-1 1 ” as one of thcsprngs used in an instrument that was made and used about May 2fi, 1377, and illustrated , by the drawing on EDISON’S EXHIBIT 100-11. The instrument worked well. “EDISON’S EXHIBIT |l INSTRUMENT WEIGHTED ELECTRODES” I re¬ cognize as part of tho weights used in experiments on iner¬ tia telephones. “EDISON’S EXHIBIT INSTRU- foo - (( d A^O l nher of carbon telephones made with hard I believe they were made nliout or prc- \ 2(5, 1877. The working of this instrument n every respect, with the exception that a temperature after taikingalitllc while alters ait slightly by expanding the ease. Thero re, not a great many of these instrmncnta case shortly being changed to an ‘EDISON'S EXHIBIT INSTRUMENT what is known as one of the 1 motograph telephones, it consists of >e, one end of which wns covered hy in front of this diaphragm and adjustable, as a spring electrode carrying a button ot lie vibrations of the diaphragm causihg a ->ss intimacy of contact with the plumbago lie-reusing anil decreasing the tension of an lit in a closed circuit, in which the pi . . 1 electrodes were inclosed with battery. The¬ das instrument is bent in sucli a manner mid is enclosed in a resonant chamber, which portion of the receiver of the same lnstru- MSON’S EXHIBIT MOTOIMIONK” I lie of the speaking telephones now in use, and tactically speaking telephone on this princi- linvc been a large number of them made it 1 5 months, which are at present in use. 'erring to the publications shown as Ex¬ cuse, and marked A, .1), C, 1), E, F, G, H, hat do you know about them ? ivero published in the papers stated, and at led, from which I cut them out ; they have Dssession over since. They are ns follows, tie headed ‘‘ Edison’s Pressure Relay,” cut •nal of the Telegraph, June 1st, 1877. ile out from the Journal of the Telegraph, id dated July 10, 1877. Q. House stiito whether the telephone mi pm have referred to with the rubber rings if the diaphragm, was ever maile use of, a Q. What was the olijeet of tlie ruhlior ring To inorease the amplitude of the vibmtioi rngm, and also to deailen the metallie It Q. Pleaso look at the drawing, “ IC OISOM IT .‘57-12,’" and state whether your signature when the drawing was made, and what it i 2H; 1S7T, and it shows a number of i :d diaphragms and hands on diaphragms of o shows a dinpntglii placed hetween ruhhe : tlie edge of tlie diaphragm. Also I lux ings illustrative of these rings, in order to fully tlie experimenter who made it. Time ings arc marked, one as tlie outside ring, an isidc ring, and tlie middle, tlie diaphragm further instructions m writing, which snv iror other soft substance rings between dii e rings.” Q. Pleaso state whether or not a telephone was made with the devices shown upon 11 E.\ ; and, if so, about when, and whether nr u iveral forms of diaphragms and rubber ill id “ EXHIBIT 37-12.” Telephone instruments were made, I liohoi all shown in these drawings, and mnnv moi imo of the date of this drawimr. Julv 2( 'here are several forms of diaphragm and riihber illui ■aled. In the four upper figures tlie rubber is shown i complete disc, upon which the diaphragm portion res d. In the doviro shown, the rubber was simply iu tli arm of rings, the diaphragm being between them. 321J. Please refer to “EDISON'S EXHIBIT lb- 2,” and state whether you signed the same, and whet ml whether or not it is in the same condition as it wa •lieu you signed it, and what the same represents ! A. I signed that about .Sept. 21, IS77. It is in tli nine condition, 1 believe, as when 1 signed it except, tli ddition of the Notary’s mark in tlie left hand lowi nrner. This mark is, EDISON’S EXHIBIT 10-1-12, 1. !,.(!. This drawing shows a loose diaphragm, restingo i stretched diaphragm of rubber to be used in a telephon :t:!Q. Please examine the telephone instruments inarke ‘EDISON’S ARTICULATING TRANSMITEI 5CTOBER, 1677. S. E. CL, and “EDISON’S THREI IPRING ELECTRODES, S. L. G,” and state wliethi on ever saw tho same before, and if so, about when ! A. Tho instrument marked “ EDISON’S A RT1CI .AT INC TRANSMITTER, OCTOBER, 1877,” is on fa number of instruments made on the principal limikc a “ E BISON'S EX 1 H BIT 1(14-13.” Ainunlierof tliei i-ere made alioiit the date of the drawing liiarki: 'EDISON'S EXHIBIT 1(5-1-12.” I recognize this it triiment as one of tlie original ones, and, as far as J ea ee, is in the same condition as when made, with exec] ion of tlie ease enclosing the back. This Kxhilii narked “EDISON’S EXHIBIT Til REE-SPRIN' 3LEGTRODES” I recognize as an experiment tried 1: Hr. Edison, about October, 1877. It is not in the com! ion as originally made, ns 1 see the rubber diaphrag¬ ms broken away and only the edge around where it 'listened to a serow. The carbon buttons also, I see, a ;onc. I remember this instrument. y-1 Q. Please oxatnino EDISON’S ARTICULATIN' 1’R ANSM1TTEH, and stato whether or not this subjo MB Q. Please examine “ Kill SON’S XII1I1IT 103- 12,” and stnto whether tlmt is your signature where the same is applied, and whether or not any change has been made in the same since it was signed hv yon I A. That is my signature, and the sheet is the same ns when I put my name upon it, - about August 12, 1877, with the exception ot the notary’s mark, EDISON’S EXHIBIT! 05- 1 2. S. L Cl. Mb Q. Was any instrument made, and, if so, whun, in the form illustrated by the middle figure, and described in the stiiteinuiit : “Soft rubber to deaden the diaphragm. It works well, prevents harmonics or excessive vibrn- A. Yes, sir; such nil instrument was made and the soft rubber was applied to tbe diaphragm by stretching two strips of it across the face of the diaphragm ; one a little above and tbe other a little below the centre. This instrument was made August 12, 1877, and worked well. M7 Q. Was any other form of device proposed for damping the diaphragm besides the strips of rubber? A. Yea, sir; in connect ion with this instrument, 'Mr. Edison proposed ami wrote out thu following: “ Hard pieces of rubber or equivalent material could bo placed in different parts of the diaphragm, and held against it by adjusting screws to dampen it.” Such a device was subsequently employed. 1 refer to “ EDISON’S EX- III HIT 0-13, S. L. G.,” in the upper figure of which is represented a diaphragm dampened by screws and sec¬ tions of rubber tube. 38 Q. State whether or not your signature is on this EX1I1 HIT 0-1 M, and whether or not the same is in the same condition it was in originally as signed, by you ? A. Jly signature is on this EXI1IHIT t)-|M, and was nut on about October 14. 1877. The Exhibit is in the 33 Q. Please state what EXHIBIT 18-1-11 represents ml how it was used ! A. The I’’ig. in EXIIIHIT 184-11 shows a sprin; arrviug an electrode to he used in connection with a tele hone diaphragm. The object of thu rubber between tin lids of the II shaped spring was to deaden the vilirn ions peculiar to the spring itself, and for this purposi lore was also used about June 23, 1877, rubber ring laced around the shank of the U shaped springe ’his I consider to correspond with thu count in “ Inter 4H Q. I’lease state whether or not the diaphragm epresented in EDISON’S EXHIBIT 180-12 wen lose, so that they might he free to play under the at losphcric vibrations? A. The two figures nearest the left hand button orncr of this Exhibit show loose diaphragms — the liighe no having a limited movement so that it would not dro| If if held downwards. Tho lower figure shows tin iaphragm resting on a ring of rubber. This din hingm. although not shown hero, was held by a spira pring from its center inwards. I believe it was nine 41 (,J. L" Please look at EDISON’S KXIIIBI'I SPRING FINGER.” which drawimr was made hv tin Please look nt EDISON'S KX II I HITS 1-13 11-13, mid stale. generally, wlint the same rcprc liethor or not any a pa nil us was eorrc a lliu same? sir; instruments were made corresponding t< tig. and leftliand lig. in EXII I HIT 1-13 ; mu s were made like all the devices shown on Ex : and instruments were made like the hotlon on Exhibit 10-tit. All of these instrument; lieally good talking telephones. The lowei lig. of Exhibit 7-13 shows an instrument ii diaphragm holds in its center one electrode other electrode is fastened to n spring on whirl idle is pressing. In this case there are tw< e diaphragm also forms a spring, which wonh with the second count of Case ii. the screw l ent being equivalent to the lever spoken o nt. ’I’lie device shown in EXHIBIT lli-li siller to correspond with the same count. Ii ices M r. Edison made use of a lever insteai isting screw, as shown in “ Exhibits Oil- lit,’ tiie left hand figure, “Exhibit 1 1-13.’’ lease state whether or not any instrument wa .•spending to Edison’s “Exhibit 3(i-13? sir. An instrument was made similar to tin lease examine the exhibit marked “ EDI X HI HIT LOOSE DIAPHRAGM, SEPT. I state whether or not the same is one of tin istrniiicuts containing the loose diaphragm when the same was made ! instrument uinrked “ Loose .Diaphragm” ii original instruments, and was made about r, I believe. lease refer to the instrument marked “EDI US I CAL TELEPHONE, SEPT., 1877,” am ■e seen the instrument before, and I 2 about Soph, 1877. The diaphragm tli rubber rings on ouch side, near tl now show to you a copy of the dm u’s application No. 188, tiled Deeen sk you whether or not you ever saw iving instrument corresponding to tli lirst and where ? number sucb an instrument being n ison previous to bis going to Europe, e talking received on it. fill pou please state the month, as nca ■t it, when you saw tho said instrum fas one of a large number of experiuu deli 1 was generally asked to listen tc tate whether or not articulate words his instrument? lived good talking, but very low. n alKiut bow many occasions did you i of this character ? lease describe the same 1 n the miignot was turned and the love •rent through the spool would make the lever, causing it to vibrato the (lit n such differences. f there is a permanent current tliri lix, and tho strength of that current ii iry the friction of the rotating coreagi ling from the diaphragm or not ? HO Q. PlenfiO state the weight of the Exhibits referred to in your 97th imswcr ? A. The weights marked “ EDISON’S KXIIIIHT WEIGHTS 113-11,” weigh about one hundred and eighteen grammes. and the eup and earlion about 09 grammes. I00Q. bo you know when instruments having dia¬ phragm and electrodes like “ Kdison’s Exhibit Mica bia- phragm,” wore first made tor eomnicreiiil purposes ? A. I believe a number of these instruments were made in Kdison’s Laboratory about June 1879. The}- were made for the “ Edison Telephone Cuiiipauy. Limited, of London.” 101 Q. In trying tliese telephones as you have de¬ scribed, where did you place the transmitter, and where did you place the receiver? A. The transmitter was generally placed in the early part of our experiments in the front part of thu bottom floor of the Laboratory ISuilding, and the receiver in the hack part of the top floor. Afterwards this was reversed. The distance apart is about one hundred feet. 1 02 Q. 1 lid you ever place them any further apart than that ? A. Yes. Occasionally we took the transmitter to either Adam’s or my own house, and sometimes to the depot, where private lines run from the Laboratory. 193 Q. You have said that these dilTcrent transmitters tlint you have described, transmitted articulate speech successfully. Why did you not go on and make more of them, and put them to public use? A. I believe these instruments did not come up to what Mr. Edison had made in his mind as a standard of a commercially successful telephone. Some of them, al¬ though talking perfectly, when Adams and myself were working with them, not being thought good enough by Mr. Edison. Lf a telephone, for instance, wrs not a loud 194. Were there any telephones at that time, summer and autumn of 1877, in public uso with telephones constructed by Nr. Edison would have into commercial competition? A. I believe there was. 1944 Q. What other telephones were there ? A. ] only know of the Hell telephone. I Ofi Q. bid Mr. Edison at any time have an; phone instrument made by any other party so ai stitutc a comparison between the same and his owi A. I do not remember at any time on, or provi these dates, of his having any telephones supplied of any one’s make until long after the earliest these exhibits. I don’t know of any telephone kind that was supplied to Mr. Edison. 199 Q. bo you know who made the instrument on Exhibit 188-12, No. 1 ? A. T believe some parts of it were made by my: 107 Q. bo you know whether any one else was mg in Mr. Edison’s shop at that time besides Mr. j and yourself? A. Yes, sir ; John lCruesi. 1974 Q. bo you know whether any changes were in the instrument represented upon Exhibit 1S8-1 if yea, what? A. Yes, sir; numerous changes were made, spring I icing changed a number of times for ligli heavier springs. T believe Mr. Ifreusi made theses and they were afterwards put in the cups and trim 108 Q. AYliat object was there in making these cln A. The object was to alter the inertia of the wet the eup. 109 Q. And where these instruments all testci the different springs you have stated, and if so with result ? A. I believe they were ; they all worked. They rd of til oso >v Mr, Edits the rcsonn- k when np- tlie volume ndiserimin- : thc.reson- imy fork to e resonator ii llie parti- luul its own mill tell me iwing mnik- u telephone is the relay ENT TEL- t illustrated lid Adams, a Edison to iy prineiplo, e keen tried you fix the use exhibits April III, l S 1 7, marked pressure relay, witnessed by you and Mr. Adams and Mr. Edison, and tell me whether there is any sketch or drawing or other exhibit showing tliu pressure relay before t hat date. A. I cannot call to miml at present any sketch of a pressure relay earlier than this date, though I lielieve it was made earlier than this. x Q. I "Jo. What makes you believe so ( A. It. seems to me that we Had it working much long¬ er than two mouths when it win i I Installed in the .rmir- iial of the Telegraph, June 1st, 1877. xQ. 120. After looking at those two Exhibits AS— 'll and 57- 1 1, and observing also the directions on the Exhibit 58- 11, do you think it would have been, .according to the ordinary praetiee at the laboratory, for Mr. Edison to have made the rough Sketch ;>8-l 1, for the first time, after you had a finished instrument working? A. Tlie drawings on Exhibit 58-11 illustrate in my miml more how the material 'should he used between the armature and the magnet than the instrument itself, ns there is written on it manganese, blank oxide, or other in¬ ferior conducting material, may ho used, plumbago I believe wo used at first, which is a very good conductor. xQ. 127. Do you think that M r. Edison made all the drawings on 58-1 1 for the purpose of stating that in an instrument which you already laid in use mngunesc, &c., could lie substituted for plumbago ? A. Tlie bottom figure 1 do not know wbat ho made for ; the figure in the top left hand corner, I presume, he meant for the same purpose ns the middle figure, ns our first instrument, if I remember right, had not a solid pieco of the material across botli cores. xQ. 128. Please look at the sketch 00-11, and tell mo if it is not u drawing of the instrument EDISON’S PRESSURE RELAY? i. The drawing, ns far ns I cun judge. is intended for EDISON PRESSURE RELAY. Q. 13!). The said drawing bears nt the bottom the ■ds, “ Delv’d Ap’l 10th,” does it not l i. Yes. Q. 130. It hears at the tup the mark $4, (loco it not. wording to the usual practice of marking sketches, does that indicate that it was delivered April 1 6th, and t its cost or price was estimated then ? t. If the party’s name who put the writing on there i affixed to the drawing, I should say I think so. :Q. 131. Mr. Adams’ name is on the paper, is it not! Tt. is in ids own handwriting. Further examination of this witness is suspended until e. 3d, as agreed in open session. S. L. GRIFFIN, Notary? Met pursuant to adjournment, December 0th, 1880. Further cross-examination waived. CIIAS. BATCHELOR. Laiiouatoiiy ok Tuos. A. Edison, | Mtixt.0 P Attic, N. J. ' Thursday, Dec. 0, 18S0. Lhmuki. W. SmtiiUt.i., being duly affirmed, deposes and says: l am 51 years old, reside at Plainllold, N. J., and atn of counsel for Thos. A. Edison. 1 liavo been generally familiar with Mr. Edison’s ef¬ forts to produce a speaking telephone, so far as he has furnished the particulars for caveats and applications for patents. 1 have prepared his applications for patents now ill interference, either from written descriptions and sketches, or models furnished to me by him, or from his verbal descriptions. Case 130 was prepared from his verbal descriptions given to me March 23d, 1ST?. I liavo in my possession the original sketch made by Mr. Edison when giving to me the particulars for preparing this case, and I hero produce a photolithograph of the same, which is here offered in evidence marked “ ORDER FOR CASE, No. 130.” Mr. Edison made all the sketches on that order, and explained to mo the differences between musical sounds and articulate speech ; his explanation was, that during his experiments, conducted through a long period of time, ho had discovered that articulate speech was alto¬ gether different to music. 'Mint musical sounds had, as was well known, a regular rate of vibration ; that speech had both a rate of vibration and a volume, and ho illus¬ trated his ideas and explanations by two rows of dots, wlrii.li nnnnnr on and Exhibit. “ORDER FOR CASE ill 1877 ; also the dovicc shown on Exlnh- so thu device shown on Ilio upper figure he (lilies written upon Exhibit 70 — 12, 78- 2, immely “ Del’v’d July 28, 1877,” are in ng; thu Spetiking Telephone instruniunts those diagrams were made by mo; I made xhibit 124—12 and tho instruments shown 1-12 and 1211-12, they being transmitting instruments; they were made in 1877; I late positively from memory, but think it Ignat.; I recognize 138—12 ns a sketch del which I made ; this model was delivcr- , 1877, tho date being in my hand-writing; e drawing 2(1-13; 1 made the instrument ■, 1S77; I also recognize the sketches 21, ; l also recognize drawings 3!) and 40 — 13, t telephone transmitters, which I helped to liniment, shown on Exhibit 30 — 13 I also Ire about Oct. 1877; I remember I made eviecs shown on sketches 102 and 104 — 13, Hide about Nov. 1877; r also remember istrlimcnt shown on 140— 13, this was made S77 . T also remember several other devices rhieli are shown in these exhibits besides nadc. yon ever make any diaphragm for Mr. Edi- t is the lirst one which yon remember! the lirst one was sheep skin with iron on 1 one was all iron. i was tho iron one made ? r i,s I remember in 187G. t makes you remember that iron diaphragm when it was made ? I not have any iron in tho place good enough ise, and I went out to get a piece from Ha- ' A. Their placo was noar the corner of Market an Ward streets, Newark, N. ,1., and Mr. Edison’s place i that time was 10 and T2 Ward street, Newark. Tli iron was very much thicker than Mr. Edison wanted i and r worked it out to tho required thickness. 7 Q. What was done with it after you laid reduced i thickness! A. I linished it as a diaphragm, and it was applied I a brass tube. There was an oleetro-niagnet in front ( the diaphragm. This electro-magnet was outside thebrai tube The electro-magnet was adjustable fen that tl cores might bo brought nearer to or farther from tl iron diaphragm. This was in the c 1\ | t Is Mr. Edison, after I had made a number of nppnniti which wore called acoustic telegraph. Mr. Edison h made use of iron diaphragms since that time on mil hers of occasions, and the iron diaphragms arc used i some of Mr. Edison’s latest telephones. These lati diaphragms arc tin diaphragms. 8 Q. State over about what length of time the elToi of Mr. Edison have extended in devising and perfect!) his improvements in telephones? A. As far as I know, from 1875 until 1879. Son times fifteen or more persons were at work on tho telephones under Mr. Edison’s directions; at other tim only three of us. The work was kept, up almost ccssantly during the period named. 9 Q. Do you remember at any time having anyth! to do with a telephone instrument in which the el trades wore in water, and if so what is your recollect! on the subject ? A. t remember that we made a water telephone, do not recollect it clear enough that I could give a d cription of it. I think it was in the year 1877, but not recollect the month. their nlnec JOHN KKUESI I Q. From the conversation on the subject did yon >t understand what Mr. Edison desired to accomplish? Objected to by Mr. linld win;, ns incompc- . 1 understood from the conversation that lie thought ould make an arrangement which would transmit icli electrically. xQ. Please explain your present relation with 11ns A. Edison ? I am in charge of some of his patent matters, lint patent agent am opposed to him in telephonic mnt- Onr firm is retained in all matters excepting those ing to telephones and the quadriiplex controversy. Office of L. W. Sekuku., | 1-10 Nassau St., New York, N Y. V Friday, Deeombor lOtli, 1880. ) fosiA.ii C. Rbifp, being duly sworn, deposes and mya uiswer to interrogatories proposed by L. W. Serrcll, ■j., as follows : I Q Please state name, age, residence and occupation ? A. My name, .losiali 0. Kciif. 1 am 12 years old, 1 reside in Now York City, and President American itomatic Telegraph Co. • 2 Q. Do you know Thomas A. Edison ? A. I do; l have known him since latter part’ of 1S70, 51 Q. Did you over visit his place in jSownrl A. Yes, frequently, between 1870, and tho 1 87-7)187(1, *np to tho time of his removal to II 4 Q. Did you 'know anything about any ii made by Mr. Edison for telegraphing in count sound, sometimes called musical or accoi graphs ? A. I did. 7) Q. When first; where and what did you A. In regard to his experiments in what i coiistic telegraphy. I know that lie was exp continuously after the latter part of tho siinm at the Ward street shop in Newark, Now ,lt the time of Ids removal to Menlo Park. Mr. experimenting to determine the practicability i telegraphy, as it bad been devcloopcd by 3 Chicago. He used a complicated mcchanisi oft lining-forks, telegraph keys and sounder; lion with what bo called his resonators, whit of a hollow tube covered with a diaphragm near which was fixed a magnet. I cannot ( relation of tlic several parts of mechanism c each other, not being an electrical or meclini I was present on numerous occasions, most frequently remaining in Newark all night i and noted his attempt to receive the so Morse characters. That is, the resonators III in these experiments that the receiving sunn ordinary Morse telegraphy. Frequently at 1 sent dots and dashes by slowly operating one be using me when there was no better hand. I remember that most ol the char made were dots, because I could not with liuiteuess distinguish the dot and dash chain (I Q. Please state about the relative locat instruments at Mr. Edison’s place i A. Those that are most impressed upon in; the tuning-fork combination that was place •otim partitioned oft in tlio uit Mr. Edison could ob- isiblc in listening to the ivoid tlie mingled noises o transmitting apparatus rsons present and their remember the exact date ]>, hut 1 think it had been 1. I saw the resonators in it think that 1 did not see Ir. Edison, except in the ined, so far as I know, on v g-fork combination. I do in may have done upon lit, when I was not there, strumeiits marked Exhibit Edison Exhibit li, Novem- or not yon ever saw said nents like them 1 litlier the identical instru- mcB made after the general the instruments that I saw Exhibit II I do not frilly that be laid more than two is sizes. 1 don’t distinctly >c magnet lived alongside do remember that in front had a movable plate or bar. shibit 1’*. 1 do not call to peration on Exhibit 11. tidbit A or A' in use ; if so, me with them { icnts like them, frequently ' the little room, as hereto- I' examine or listen to either while being made use of at Mr. Edison’s place in Xowurk, amt it so, wnat soumiE any, were heard ! A. L listened to those instruments, or instruments 1 them, and heard the Morse characters, iib well as humming sounds, produced by the operation of tuning-forks, and frequently the mixture of the voices those in the outer shop, when they could not be disi gtiishcd away from tlio receiving instruments. 10 Q. Do you or not remember words being heard art tits ds on thoso instruments A or A1 or sii lar ones ( A. I heard the sounds of the human voice and cn distinguish the voices from each other ; but do not member that I attempted to distinguish the wo themselves. I remember that I could recognize pari outsido talking, among whom were Mr. Ilatehelor, j E. II. .Tolinson.il man named Adanis. formerly an sistaut of Mr. Edison’s, mid any one elso who mi happen to have been there at the time. A Mr. S] was frequently there when 1 was there, he giving spe attention to experimenting with light and sound. Adjourned to !H o'clock A. M., Thome December 1 1, 18S0. G. T. P., Not art •, 140 Nassau Stkkkt, Xnw Yokk, 1 Satubday, Dec 1 1, LSSO. ] Met pursuant to adjournment. Coiitinuatiuii of exniuinatinn of Mr. J. C. lioiff bj V. Sorrell, Esq., counsel for Mr. Edison. 11 Q. Are wo or not to understand from your last swer that upon tlio instruments Exhibit A and A', or strunicut corresponding with them, you were able distinguish one voice from another, you being in 27!) J08IA1I 0 .BKIFP. . 2(3 xQ. Dill you make any investigations or expcri- moots to investigate this singular fact boyond listening at the rccoirorl A. No ; for the reason tlmt I nm neither n scientist olcetneinn, incclmnie uoroxpcrimentor. 27 xQ. Wlmt relation existed at the time of these experiments between Kdison and yourself, which caused you to be at his shop so frequently and so late at night ? A. I had been in business relations with Mr. Edison sinco 1870, and was very much interested in his experi¬ ments of every kind. 28 xQ. Docs that, business relation still continue ? A. A business relation still continues. 2!) xQ. Docs that business relation involve any pecu¬ niary interest on your part in any Of Mr. Edison’s elec¬ trical inventions or applications t A. It does. Oron-exam inalion by Col. 6. IV. Dyer! 30 xQ. When did you first know about telephones ! A. Strictly speaking in relation to the transmission of articulate speech by a telegraph wire, I think it was at the Centennial Exhibition, when Bell exhibited what lie called « curiosity which lie said he did not comprehend, I heard Mr. Boll say tlmt. 31 xQ. Was that the first time that you ever heard about telephones 1 A. That was not tho first time that I heard of the use of the word tclcplu lie. My previous answer covers the ease as related to the transmission of articulate speech, as far as I now remember. I think T wrote a letter to a friend some time iii 187f>, in which I referred to a Cali¬ fornia party in connection with n new telegraph scheme, and stated tlmt it was reported lie had had under his control a telephone. 32 xQ. When you visited Mr. Edison so frequently at Noxvark in the late summer and fall' of 1S7">, aud'wintor of 187(5-7(1, did youfjsupposo tliatj you ' had] aj pecuniary Objected to by counsel for lid is lcvimt mid not properly of not consider that to bo n proper < nent it cannot nil'cct the subject i is interference, unless it shall be ic force of my testimony upon l final interest might influence mj As T have previously stated, n iv sense, I never went into the eo m’s experiments, beyond noticing s by which those results were ac< general manner possible, o prevent any 1 I ic preceding question, I state tlin . from you whether the attention ; euts about which you have teslili liich proceeded simply from curioi proposed pecuniary interest 1 Counsel for Edison objects to I upon the grounds that the 1’ has declared an interferem mine the priority of right, ai question of ownership docs r.c the contest ; that even suppi ness might have considered be pecuniarily interested, wli matter of business lie was Edison, still he is ontitled evidence in this case. lerstand the obligation of an oat wor {ho questions submitted to mi of which I am cognisant, in view of tho obligation ot that oath, but [ do not bolievo I am called upon to dis¬ close my business relations with Mr. Edison that are not involved in this interference. 3-f.\Q. I did not ask as to the question of property, bnt as to the quality of examination which you gave to the experiments about which you have testified, whether it was an examination winch proceeded Irani idle curi¬ osity or otherwise ? A I have stated that I noted certain results obtained on the receiving instruments; I have stated thnt 1 did not know how those results were produced; except that I believe the sounds of the dots and dashes received pro¬ ceeded from tho motions communicated to thu transmit¬ ting keys by the persons operating them. lifixQ. Tb that all the answer you propose to make to that question t A. I might say that so far ns a 11011-export can, I en¬ deavored to notice the cause and effect with thu same intelligence that I would bring to viewing any object of interest. 1 do not understand that an intelligent person is to be charged with idle curiosty, unless lie first posi¬ tively states that he has a personal pecuniary interest in the object seen or subject discussed. iUi.xQ. Counsel for'Edison having stated that you were Mr. Edison, and put f without objection from whether or not thu i incuts ulimit which yon oil in some matters of business with it this statement upon tho record Util you, will you now kindly state e inventions covered by tho oxperi- yon have testified, included mutters pecuniarily interested with Air. Counsel for Mr. Edison objects to this question on the grounds thnt it substan¬ tially raises an issue in this case corrcspon ding to what has been familiarly known as tho “ title tight ” m the quadruplcx ill behalf of himself nnd the witness (Mr. Reill) nml the Western Union Tel. Go., Goo. 11. Prescott nml others. n of transfer ins 0,lt of t11'1* <luusl still in progress, nml that the witness cannot properly he reipiireil to nnswer any question that might interfere with, any claim he might he entitled to set up in the premises, he not having lieen called in this interference upon any such point, and that he is privileged to de¬ cline to answer any such question if he idcrstaiid that I am to he houml hy any nisei for Hr. Edison in this interference stlicr it relates to his opinion, to his the language in which he couches the lie chooses to put upon the record, and I ur that 1 have already answered the t question fully nnd truthfully in my jstious 32, 33, 31 and 35. all the answer you are willing to make question i ■ examination declined hy Col. Dyer, on 11011-answering these questions, and no- nt at the time of hearing, motion will ho Id in reference to that portion of my tes¬ ted with 32 x question and 37 x question as [ understand tho matter, the onlyqucs- trihuiml as makes it portinunt thereto, I am perfectl willing to ho questioned us to my business relations wit Hr. Edison. T am unwilling to ho plucoil on tho record as seeiiiin to decline to answer freely any proper question within protesting against tho injustice of the intimation. ^ Cross-examination waived hy counsel for Hell i .TOSIAII C. liElEF. Office of L. TV. Skukku., I 140 Nassau st., New York. N. Y„ t Saturday, Dec. lltli, 1880. ) EnwAito IT. Jonxsox being duly sworn, deposes an says, in nnswer to interrogatories proposed hy L. 1\ Serrcll, Esq., counsel for Mr. Edison, as follows : 1 Q. Please stato your name, age, residence and oeci pntion. A. Edward II. Johnson, ago 34 years, resilience Ne York, N. Y., occupation electrical engineer. 2 Q. Please examine Exhibits A and A1, and stat whether you ever saw the same, and if so, when an where, mid what, if anything, was done with them ? A. 1 saw the instruments, Exhibits A and A', at tli timo they were made in the laboratory of Hr. Edisoi at Newark, N. J., in tho fall of lS7i>. They were use by -Mr. Edison to analyze the sounds which were trail rnitted over a wiro hy means of reeds, telegraph ke,> nnd other devices. I was at that time visiting the lain ratory almost nightly, nnd frequently assisted Mr. Ed son in his cxnoriments with these instruments m in Company, and on one occasion between tbnt office ami tho residence of Sir. Orton, in Now York. This wna soino considerable time prior to tho sign¬ ing of the contract between Sir. Edison and tho Western Union Company for his telephonic inventions. I think as much as seven or eight months; I refer to the contract dated May 21st, 1878. In 1877 I was lecturing upon the subject of Mr. Edison’s telephone work, and used m those lectures a device which transmitted only tho tones, and not articu¬ lated words. I remember, in this connection, constantly bcBccching Sir. Edison to allow me to use his carbon transmitter, saying that my public exhibit would be so much more effective if I could reproduce to the audience articulated words such as I heard from time to time in his lubnitory. His objection to doing so was, that tlie reproduction would not be sufficiently loud to enable an audience as one body to hear it. There was a lecture delivered at tho Contcumnl buildings, in West Philadelphia, by Prof. Geo. F. Barker, some time in July, I877.f 1 being present, and operated tho instrument. We laid at that tune a Reiss transmitter and Edison electromotograpli receiver. J gave lectures myself from this time onward to October 18th, with few days inter¬ mission. The notice of one of these lectures lias been introduced as an exhibit in this case, being the notice of the exhibit at Twcednlc Hall, at Albany, on Sept. nth. The extinct from the Chester, Penn., JVews of Sept. 28tli, 1877, gives the substance of the lectures delivered by me. I gavo a lecture on Oct. 18th, 1S77, at the Tabernacle, Jersey City, tho programme of which and notices have already been put in evidence, and at this lecture the Edison carbon transmitters were used, mid articulate speech transmitted mid reproduced in tho hall, Mr. Edison himself speaking and Binging through the transmitting instruments, which wore located in the office of tho Western Union Tel. Co., in tho Ponnsvlvn. R. R. depot, nnd at tins time incsecnruun luiupnum 3 publicly used for purposo of profit. lamination adjourned to Tuesday, .Tnu. 4th. 1S8 0 o’clock A. M. GEO. T. PINOKKBY, Office of L. W. Seekell, * 140 Nassau street, New York, N. Y., January 4, 1 SSI. Met pursuant to adjournniont. Present— L. TV. Sen-ell. Esq., on behalf of Mr. E i. Col. George \V. Dyer, and Mr. Betts, of Mos ttts, Attcrbury & Betts, on belmif of Messrs. Irtv ,elker & Riclimond, ami TV. D. Baldwin, Esq., on If of Mr. Gray. Continuation of examination of Mr. E. II. John L. W. Sorrell, Esq., Counsel for Mr. Edison. 10 Q. Please state what transmitting inst runic ere used at tlie TV. 11. Tel. ofiiee in tbc 11. 11. Dc Jersey City, and bow you obtained your knowle iis way 1 A. Tliey were the Edison Carbon Transmitters ieir tlion existing form, but precisely what that f as I cannot now recall. They wore enclosed i ooden case, and effected a variation of the enrren urintion ol the pressure of the diaphgram upon a jn composed of plumbago and. a fibrous material, onncctcd those instruments at the telegraph ollic. oluill. Mr. Edison afterwards oponm Mr. Edison, Mr. Batchelor and myself I incuts from Menlo lhirk for this purpof Q. TVliat kind of receiving instrimieut nburnuclo on this occasion i ■ TVo used two kinds ; one for ordinal and one for so increasing the volume of the words audililu to the entire midi tvns the magnetic receiver, consisting and duiphrugm. The other was the i i, consisting ol sounding board, small i strip of chemically prepared paper. 1 litter described instrument, the urticul mnde snllieiently loud and distinct I gliout the hall ; this is due to the fact tli itude of vibration of the diupbgrngm eni a given strength of current by an instriii iperative principle, than by any lorm i ,<jt«i principle can lie used. To make jxplaiu that in the magneto the current ics the diaphragm by reason of the vari gtli of the magnet affected by the electi ng through the liolix surrounding t ilicse electrical currents are necessarily lows the variation in the strength of I lie consequent amplitude of vibration gm is proportionately small. In l lie It receiver, the principle is supposed to rencu of friction, the operation lining ns 1 roller with crank attachment is plac n on a base immediately in front and a i the central face »f a sounding board o :h may be of any size from that of an o io receiver to that of a piano ; attached ho sounding board at one end, and wit ng upon a small roller is a rigid piece of ado to bear with a considerable pressu ir by means of a spring suitably placed .•homically prepared paper is made to f tho roller nnd the end of this metal attach Ihc Bounding hoard. Electrical connection!! m s to cause the current to traverse the roller, tli paper, nnd the metal bar. If now the crank aitward from the sounding hoard while no eu ssing, the very considerable friction hetwcc • (earned forward by the roller) nnd the end < bar, drags the sounding hoard outward tuwm • precisely sis if it. were attracted hv a very pot gnet, its release from this position (the forwai it of the drum being continuous) is effected 1 gc of an electrical current, which current nfTect ation, or otherwise, a decrease of the frictii the paper and the bar. The degree of this h is directly proportionate to the strength of tl it will thus ho seen that if a current of rnryin passes through the device a variable frictii ail on the surface of the paper, and a cons riation in the degree of amplitude of the soim I vibration. Mr. Edison hassnhseipientlv met: his principle in what he terms his “loud spell splione,” such as the Exhibit introduced in tli rked “ Edison’s Exhibit Motophone.” (Elt •aph.) Many thousand of them are now in iis tiling hoard used at this entertainment wasaboi inches in length, IS inches in width, nnd I k, with the roller and chemically prepared pap described. Please look at the programme and hand-hill i I'tainment at the Tabernacle, Jersey City, Oeti 877, referred to in the testimony of Chnrl r, and marked E, and state whether or not tli i of the originals as, sir ; they are. Please state in which part of the program! ton telephone was HBod, and whether or ti ere received nnd reproduced upon tho eleetr ph, of which you have spoken 1 A. No. 7 of part 2 incite programme, entitled “voc music, from tho local telegraph office, by tho speakit: telephone ” This is distinguished from tho other par of tlio telephone concert by tho fact that in this part tl words were articulated both in song nnd in reeitntio while in tho other parts only tho tone was rendered, tl transmitting station from which si I tone n ti being, in this case, from Philadelphia.. 14 Q. To what extent was the articulation distinct cither song or recitation at this exhibition i A. It varied considerably, owing in part to imperfe adjustment of the instruments, and, in part, to our igi: ranee of the requirements of the chemically prepnft paper used in tho receiver, that is, to tlio degree of moi lire requisite in tho paper to obtain the maximum resul at times the words were sufliciently loud and clear to easily heard and recognized by every member of t audience, at other times they were only audible to the in the immediate vicinity of the instruments. This fo going statement refers to the elcctro-motograph receiv When the magneto receiver was used the words wt always intelligible, but only audible to the individual ( of the person holding the instrument, and, therefore, no service in entertaining an audience, sitting as a hoi I do not now recollect whether or not any member the audience came to the platform to listen to the lilt neto receiver, hut am of the opinion they did, since was my invariable custom to invito them to do so at t close of the entertainment, which invitation was gen ally accepted by about nine-tenths of the audience. Ifi Q. Please look at the exhibits instruments int dueed in this case, and state whether or not any of tli correspond generally to the carbon transmitter made of on October 18, 1S77 2 A. They were instruments of tho general form of exhibit marked “Edison’s Articulating Transmit! October, 1877,” in which was combined a wooden ct diaphragm, carbon button nnd adjusting screw, precis Icct. The magneto receiver was enclosed in a Bimnai kkIoii case. 10 Q. Did you know anything concerning tho pro .(lings between Mr. Edison and Mr. Orton in relation telephones, if so, what did you have to do with tho A. .1 was familiar with Mr. Edison’s efforts to enlist e interest of the electrical department of the Western aion Telegraph Company in his telephone sufficiently give it a trial, and remember Hint he failed to do so, ring to the personal antagonisms at that time existing tween him and the various members of that dopnrt- ent, until after many weeks, when by direct order of o President, Mr. Orton, a triul was obtained ; from is time onward, until the final sale to tho Western nion Company, Mr. Edison, Mr. Batchelor and my- If wore constantly passing to and fro between tho Ijorntory at Menlo' Park and Mr. Orton’s office, for tho irposo of showing him the step by step improvement., they were made, i remember having more than one mversation with Mr. Orton, in which I strongly pro- sted against the evident determination of his cleo- ieians. Tint to giv Mr. Ed >t Hit f r tr 1, ich trial was only finally had by Mr. Orton saying “ it 17 Q. What, if any instruments, dul you take to Mr. rton yourself, and state generally what passed with A. Ido not now recollect tho particular deiices or irm of instruments, tlioy wero so constantly changing . that time. Ary conversations with Air. Orton wore ininly in the direction of convincing him that the Mng- 3to Telephone, as a transmitter, would never be a sue >33, and that the carbon transmitter of Air. Edisot wild eventually prove to bo tho key of tho wholo tele bone business, and also to urging him ta tako the mat ir personally in hand, ns wo had no confidence inbemj corded oruner trial facilities by his electricians. Air. son the opportunity he asked, and ultimately did iso interviews with Air. Orton were, of eoufso, bo contract between Air. Edison and tho Wcsi ion was made, as they led directly to it. I rcfei telephone contract of Atay 81, 1878. 8 Q. State upon what your opinion wns based, i expressed to Air, Orton, of a preference of tho I telephone over the magneto » L. Upon my' conviction that the strength of the t which could be generated by such dovico of a u and a diaphragm was limited to tho mechanical po lie human voice, from which I concluded that it of the capacity oftlie magneto for current gene Was reached, and that the telephone transmitto future would he one in which the current was gc :d ns in the ordinary telegraphs in a battery, ply controlled by tile transmitting device ; that i , by the voice acting on such transmitting device. 9 Q. I produce a small book, called “ The Tclcpli ail-Book,” anil ask you if you know anything ill OQ. Was any publication made that referred to cert at tho Tabernacle, October 18th, 1 877 '{ 1. Yes, sir ; in the Jersey City Journal of Oetc 1877, a statement is mndo which is copied in tho jrt of “ The Telephone Hand-Book.” Tho said book is offered in evidence cotuiselfor Edison, and marked “Jo son’s Telephone Hand-Book.-’ 296 K.rll. JOHNSON. Examination continued. -Examination by Col. G. \V. T'vmt : 21 xQ. Was the Reiss transmitter spoken of by y ription ai speaking It n your nintb answer made in aecordnnee with tl il drawings published in Prescott’s book on opinions, ,md if so, wliicb one of the trims- ..^rilicd and illustrated in this book 1 A. It was practically tbe same as page 13, Prescott’s 1,00k. The contact points wore arranged centrally, in front of the diaphragm ; one attached to an adjustable screw and the other to tbe diaphragm itself. They usu¬ ally had an elastic substance intervening between the rigid adjustable screw and the contact point which it carried,' so us to form a species of ImlTer. the object of which was to insure freedom of diaphragm vibration. 22 xQ. Referring to your 10th answer, was the trans¬ mitter with the button composed of plumbago mid til, ions material, which you used in your exhibition at Jersey City. used by you ill any other exhibition ! A. I do not recall any other in which it was used. 23 xQ. Was that form of button of plumbago and fibrous material discarded by Mr. Edison ? A. That particular form of button in which eurl...ii was mixed with a fibrous material was eventually dis¬ carded for one composed wholly of carbon, hut which possessed the same elastic property sought to he obtained in the liber and plumbago combination, viz. : a button molded from lamp black. Cross-questions by W. D. lUu.V.x, Esq., counsel for Mr. Gray: 2-1 xQ. What are your present relations with Thomas A. Edison ? A- t am associated with Mr. Edison in the laboratory for the purpose of assisting him in the development ami introduction of his electric light. I nin not in lus em¬ ploy, nor am Pin the receipt of a salary, f have no po- E. it. JOHNSON. cuninry interest in tiny of Sir. Edison’s inventions so far as the United States is concerned, with the exception of his electric light. I have an interest in his telephone ill England, obtained by contract jointly with Mr. Edison and the English capitalists ns consideration for one year’s service in England. 2i> xQ. As a rulo, are not Mr. Edison’s nssccintes and employees at Menlo Park' interested in n manner similar to yourself in his inventions 1 A. Rot ns a rule. The exceptions nre, those who have been associated with him for many years, and who do not receive from him n regular salary, but receive instead stock, or other evidence of interest in his inven¬ tions. There arc Mr. Charles Batchelor, Mr. Francis R. Upton, Major Frank McT-oughlin nnd myself. As a matter of fact I mu personally not interested with Mr. Edison pecuniarily in any of his inventions with the one exception ot the electric light. Cross-examination ,by J. J. Stobrow. Esq., Counsel for Bell. It is admitted by Counsel for Edison that the witness Johnson wrote, and ill 1ST!) printed “STATEMENT ns to the ORIGIN AND DEVELOPMENT of the TEL¬ EPHONE,” from which pamphlet-the following extracts nre made, mid nre put in evidence by Counsel for Bell. “As is above indicated wo find A. Graham Boll, of “ Boston, Mass., U. S. A., not only working upon the “ problem simultaneously with Gray, but anticipating “ him in the licliof that its solution was practicable, nnd “ as a nutural consequence of the more persistent investi- “ gntion, evolving in advance of Gray and other couipe- “ titors, tlie practical device, thus becoming the true in- “ ventor of the apparatus for the transmission of speech. “ While Bell, however, was thus at work, another iuven- “ tor, Thomas A. Edison, of Menlo Park, N. J., U. S. “ A., whose attention had boon called to the subject of I. JOIIK80N. icoustic tole-mpliy by the lion. Wilimni umm, men President of tlio Weston. Union Telegraph tompnnj: .’a nlren.lv contributed hugely t« the sconce ot dec SLf Sic s, mill tuking «P the -M • £ X missii of t 1 to H ctl ninicln telj nftu UU nimonncc.nent of 1.1b achievement, in ' yet n.n.lo his .loviee of pn.ct.enl vnlm soon .list even Bell himself in ^ " nml in tile practical npphent.on ol the .mention TTiiiteil Stntes ns a telephone receiver. “lie has, consequently, used it for such purpose, connection with his carbon transmitter. ,.ri,gs-cX!M«‘umtion waived by Counsel for be Counsel for T. A. Edison puts in evident the '.following extract from the ^uii pamphlet. » It is noteworthy that Bell by this application ■ “ the magneto principle obtained;... once. .. 1. The combination of n transmitting :nnd r “ ceiving instrument in one. » o. The most h mt ge . ,rr . f, n cut of tl » several working parts possible. O 3. The simplest form of uppuratna conceivnb » 4. The theoretically perfect Telephone, ml...... SuitniwB i.mistiliitc at once the glory of the theoretically perfect .device is the practical one, or thiitn . specific apparatus is cquully eflcctivo for two ditimot- / rically opposite purposes. _ _ ) “ It lias not l.aj.pcned in this cubo. In practice it lias"^ I been found that the currents generated are too feoblo ' to effect either a sufficient physical effect upon .the re- i cuiver to render the sounds clearly audible, or to trav- I erne any eansidcrablc length of lino. ^ *• Thousand of pounds have been expended and an ex traordinary amount of experimental investigation lias I been made in the futile effort to increase the strength of these currents, the filet being, ns ubovo indicated, \ that tl.e apparatus ns originally arranged by Bell pos- ) sessed all the virtue there was in the principle. Tlio ggyl disturbances of the magnetic force in the transmit- ting instrument being eflceted by the power of the i limit of the vocal jowers; lienee the impossibility of ( any material augmentation of the strength of the cur- j rents upon this principle.” . “ This fact Iiiis compelled the almost total abandon- \ ment of the Magneto Telephone as a transmitting do- . vice, and the substitution therefor of \ “ EDISON'S TENSION REGULATOR.” \ “ Edison early sawtlmt the magneto transmitter would succumb to tlie superior effectiveness of one which should simply control an electric current instead of ^ entiling it ; ho therefore gave his whole attention to the discovery of some principle by which lie could convert the constant current of a voltaic battery into one of variable tension in harmony witli the sound Tuesday, Jan. 11, 1S81. i Mr. EnwAiti) H. Johnson being recalled, states that o recognizes the instrument, “ Prescott’s Exhibit Kili¬ m’s /Transmitter, brii83 tube, with mouth-piece ami iron ase,” and believes it to bo the instrument used by him 1 his lectures for transmitting instrumental and vocal msic ; that he believes that it is the instrument used by im at Philadelphia, on occasion of the Barker lecture nd concert at the Centennial buildings; also sitbsc- uently used it at Philadelphia to transmit vocal music ) Washington, 1). 0. That he will produce newspaper icomits of the exhibitions in which said instrument as made use of, to be designated ns “ Johnson’s Wash- igton Exhibition of Telephone.” EDWARD H.JOIINSON. Office ok L. W. Skurkli., 140 Nassau street. New York, N. Y., Tuesday, Jan. 4, 1881. Roiieiit Spice being duly sworn, deposes and says, in lswer to interrogatories proposed by L. W. Sorrell, sip, counsel for Mr. Edison, ns follows : t Q. Please state your name, age, residence and occu- A. Robert Spice, 33 years of ago, 33(1 I falser street, rooklyn, Professor of Chemistry and Natural Philoso- liy at the Brooklyn High School. 2 Q. Are you acquainted with Thomas A. Edison, ono : the parties to tlieso interferences, and if so, when did m first know him '! A. Yes, I first knew him Sept. 14, 1874. 3 Q. Wore you ever in his employ, and if 60, when id for what d utios ? A. Yes; tho first time from Sept. 21st, 1874, to Oot. 24, 1874, to give instruction in chemical analysis; tho second time from Nov. 29th, 1873, to Jan. 20, 18TC, to furnish information in acoustic matters. 4 Q. Have you pursued the study of any particular brunch of natural philosophy more than any other, and if so, what particular assistance could you render Mr. Edison between Nov 2Uth, 1875, and Jan. 2uth, 1870? A. I have worked for many years in the department of sound, especially with reference to sympathetic reso- uancc, and in this particular branch gave aid to Mr. Edi- 5 Q. Did you visit Mr. Edison’s plnco at Newark, and if so, about how often during Nov. and Dee., 1875, and Jan., 1870. A. It wns almost nightly; my engagements called mo tlicroat night, and during the tune of my engagement with Mr. Edison I probably missed three or four nights. 0 Q. During this time did you see any instruments in which acoustics and electricity were employed, and if so, Btate generally what they were ? A. Yes ; timing forks and reeds were employed in connection with electro magnets. 7 Q. In what manlier were the reeds and tho electro¬ magnets connected or operated ? A. The clcctro-magucts were placed mitsido tho prongs of the tuning forks, and the forks were in the same cir¬ cuit ; tho same remark applies to the reeds, the reeds being worked sometimes with one electro-magnet and sometimes with two, one on each side. 8 Q. Did you have anything to do with the tuning of any of the reeds or forks employed by Mr. Edison ? A. Yes; I timed the forks myself, and 1 aided in the tniiing of the reeds. 0 Q. Do you know whether there wore any keys or resistances introduced in tho electric circuits during tho period that you wore acting with Mr. Edison ? 10 Q. What kind of receiving instruments, il wore used, mill where were they placet! ? A. The forks wore used, reeds, I think relay also there were tidies closed lit one end by metal branes, operated hy electro-magnets. 1 1 Q. Please describe tiie tubes and their open little more fully ! A. The tidies were about, two inches in diamctc perhaps, seven or eight inches long ; some were tubes, some laid an inner tube to slide, in order to c the length ; some were open at the opposite end < magnet; some were closed with a cap and tube, 1 Binall rubber hose to lead to the ear. The oh changing the length of the tube was to adjust I column to reinforce the particular tone of the n fork. These instruments were placed for the 11101 of the time in a kind of oflice partitioned off fro main shop. It was oil the side of the shop towai railroad. There was an entrance from the stree this office part. 12 Q. Did you ever listen to either of these meats that were provided with the tube that yoi spoken of? A. Yes ; 1 heard sounds of the reeds or forks, i ever happened to he in circuit, interrupted by th of course. lit Q. What produced these sounds? A. The vibration of the metallic membrane set change of magnetism in the electro-magnet. H Q. Do you know whether or not Mr. Edisi ployed a closed circuit or an open circuit ? A. Closed. lfi Q. What, then, produced cliango in the eh condition of the electro-magnet? A. There are somo points here that I cannot h clear about, not beiinr an cloctricinn, but 1 know t open circuit was found not to work, a closed one was adopted, and, I believe, to accomplish this, resistances , wore put on the line. 1<> Q. Did you at any time purchase any material for constructing any of these instruments containing a tube with a metallic membrane at the end and an electro, magnet? A. Yes. 17 Q. Where, when, and from whom ? A. This date I can only givo within a few days. 1 think it was sometime between the 1st and 2()tli of December, 1S75. I ordered some : 'drawn tubing, two sizes, one to tit in tlio other. I don’t know the lunn’s name, hut can tell where ho is. ITo is over Pratt’s 002 . hardware store, corner Pulton and Cliff streets, New York. ' 18 Q. Did you obtain tiieso tubes, and were they used ? A. I obtained them and some of them were used. 10 Q. Look at the instruments here present and state whether or not you recognize either of them as the in¬ strument or instruments to which you have referred ? A. I recognize the tube, Exhibit A*. I recognize tlio instruments marked Exhibits A and A/, as being the identical instrument or instruments like them. I believe them to he the identical instruments. 20 Q. Referring to the instruments, exhibits A and A', have you any distinct recollection of these instru¬ ments, or any like them, being used at Mr. Edison’s 903 place, and if so, what kind of sounds were produced by A. Yes, I remember them being used ; the sounds were musical, and agreed mainly with the reeds or forks, but not always, on account of the instrumental appli¬ ances not being brought to perfection. 21 Q. Do you know whether or not tlio instruments, exhibits A and A', wore adapted to and did re- through the helix of the electro Objected to ns lending, nml matter ns to which the stilted himself to he incoti cy did ; my reason is this : I instruments would respond to •eed and fork being tuned di ding different electric |iulsntioi use state whether or not you itlicr of the instruments A or devices were hung operated struincnt A or- A « is limited ly one particular sound '! led; us I stilted before the im spond to reed or fork, and eon :o any |)iirticulnr tone. I yon ever hear in cither tin >’ other sounds than the illusion as the clicking of the keys? Thu clicking of the keys wei ring about what portion of tr. Edison did you have anyth! nits A or A1, or similar ones? ; the latter half of December, n speak of getting tubing, intents similar to A or A1 1 iliing was obtained by yon, o lbtained was for the first instr A' were made, I- think, bu icy might have been made i ifore; 1 don’t know that. 1 ells answer when T heard them Q How are you able to define tlio d I have copied them from iny journal. i habit of keeping a journal for fiftci I I entered most of my business coi ed to the journal twice, first on l and again last night, and I extract) il the dates given, which are on a pup on of the respective counsel if they t Tlio original entries in this journal i mt the dates which they hear. (Witness states that if it is des sel ho will produce his jo the dates may bo examined Counsel for Trwin arid others journal to bn produced. -examination by Wm. D. Baldwin-, Mr. Cray : sQ. What kind of information in aeo in furnish Mr. Edison in the fall of If Special information referred to sympi I was engaged by them ns an cxpi > answer any general questions put by Q. Please state a little moro specifics by synipliathetic resonance, and tlio k a you gave Edison hi relation to it ? By sympathetic resonnneo, T mean tli o bodies capable of vibrating where to vibrato and the vibration can di i act on the other, it will also vibrate. cccs8nry being that both bodies slioi vibration poriod. Q. Do you know the purpose for w d this information at that time? bo to increase the amplitude ; tl ho produced hy motions anting ;h the air or in any other manner; t point, if two tuning-forks on rose some distance apart, the forks heii f one is sounded the other will taki ihruto itself, the extent of the vi fork will depend on the state of tj perimeut is made; if perfectly qi vibration will lie obtained; if oth t, the amplitude of the rcspomlin lie decrease would depend largely o external sounds, and partly bn tl this statement applies to reeds ami i spend sympathetically. I- If Q. If three or four reeds or f ill an electric circuit, and tlmtcireui ictro-mugnet of one of the i list run e forks wore in a noisy shop, wluit i he effect that would bo produced a nent A or A1, by the noise in the all hat the reeds were vibrating i l think that would lead to iiiterruji or A1, and changes of intensity. I the effect would be, but I think it and. It seems to me that wluit reeds or forks in the previous am no in a shop. That is to say, that reeds would he either checked 01 ind-wuvcs acting upon them. (KlRxQ. Suppose a vibrating reed, transni lining fork to bo driven at a uniform speed , ablutions per second, by electro magnetism in mown way, in a room freo from mechanical s ars, would any sound of the human voice pi bat room vary the sound-waves emitted hy t n a manner porccptiblo to the human ear ' A. I think the loudness might bo decreased 1 ond sound made very near the reed. ‘llltxQ. As a matter of fact, did you ever ] a change. hear it stated by any on the subject, that tl could be so modified •1'JltxQ. Did you over hear i sound, or in any treatise on tin if such a transmitter could please give your authority ? ‘UtllxQ. Suppose a reed vibrated in n ilia under the conditions stated m question 10, to tricallv connected with a receiver, such ns A c anted at such a distance from thu transmitter free from danger of transmission of sounds the air or mechanically, and vocal sounds such Into speech was to be spoken ill proximity to I would it be possible to distinguish the voi< speaker 1 A. I should not think it would. By 1. W. Suiotia.t,, Esq. : d-lR-D Q. Suppose several reeds ii 309 OKOltOK II. SCOTT. OKOliOE n. SCOTT. D25 sounds, such ns n umn shouting, do you think that there would ho nn appreciable difference in the sounds re¬ ceived upon the instrument A or A’ from the sounds of the reeds when not oxposed to such external sounds 1 A. Yes ; I think there might be an appreciable dif¬ ference. R, cross : By A V. D. Baldwin, Esq : 4~> x Q. Did you over see an apparatus 6ueh as that supposed in the proceeding question tried, under the con¬ ditions named therein 1 A. No. 40 TtxQ. Tn what respect would the difference in the sounds received, ns stated in your re-direct answer 44 be appreciable ? A. I think the sound would bo pnrtly interrupted and suffer changes of loudness. 47 TtxQ. “Would these changes of loudness be in the direction cf increnso or decrease 1 A. Most likely both, but in all probability the decrease would bo more marked than the increase. ROBERT S1MCE. Geoiioe B. Soon-, being duly Bworn, deposes and says in answer to interrogatories proposed by L. TV. Sorrell, Esq., counsel for Mr. Edison, as follows : 1 Q. Pleaso stato your namo, ago, residence and occu¬ pation 1 A. Georgo B. Scott, 44 years old, No. 20 Pntchon ave- nuu, Brooklyn, Superintendent of the Gold and Stock Telegraph Oo., of New York. 2 Q. Pleaso state whether yon are acquainted with Thomas A. Edison, and how long you have known him 1 A. T have known him well sitico 1871 ? 3 Q, What was your business in 1877 1 A. The saute as at present. 4 Q. Please look at the two letters I now bIiow you ; stato if you know who wroto them, where they havo been and where they were obtained front ? A. They are in Edison’s handwriting, undoubtedly. Secretary Brower, of the Western Union gave them to me from the files in his otlico this morning, by the hand 926 of my assistant, Mr. Pope, who delivered them to Mr. Serrell to-day. Letters ottered in evidence by counsel for Mr. Edison, to he marked “ Edison to Orton, Aug. 31,1877, and Out. In, 1877., 5 Q. What knowledge have you of the early uso of the Edison Carbon Telephone, by the Gold & Stock Co., or any instrument passing under your notice, personally 1 A. Previous to May 31, 1878, Mr. Bcntly, of Philadelphia, and the Western Union Tel. Co. had been experimenting with tho Edison Carbon Tolophimo, and on or before thntdatol tried a pair betwcon our ollicc and New York and my house in Brooklyn. On that dutc I 927 telegraphed T. A. Edison ns follows : “May 31, 1878; “ To T. A. Edison, Menlo Park : “ Your instruments are a success on tho Brooklyn wire. “ Can you furnish mo with two induction coils and two “ more transmitters alone to fit up a sot for merchants’ “ circuit) 311 “ Want to allow yon new design for eoinkinnlion box i mn muking. Kopiy. “GEORGE a SCOTT. “ Superintendent.” On June 1, 1878, 1 received a letter from George M. Phelps, superintendent of the Western Union Telegraph Company's manufactory, which 1 here have present, and which reads ns follows : ‘ The Western Union Telegraph Company’s Manufactory “ 02 to 08 New Church Street. “ G. M. Phelps, Sup’t. oiiouon n.scorr. 0 Q. Please state whether or not any instrument was received hy youjfrom Mr. Phelps, and if so, what was it and what was done with it? A. The telephone referred to in this letter was re¬ ceived either hy Vice-President Walker or myself and tested in various ways. My only way of knowing when is hy the date of tho letter. 1 rcniemhor seeing that par¬ ticular instrument. On June 19, 1STS, I shipped to Su¬ perintendent Merrilicw, Western Union Telegraph Com¬ pany, Philadelphia, an Edison carbon telephone, to ho tried between that city and Now York. I determine tho date by several tolcgrains which passed between us on the next day, of which T have tho originals here present, and which read as follows : 032 “New York, June I, 1S78. • Geo. .15. Srorr, Sup’t: “ Dear Sir — I sent over yesterday one of the Edison ‘ carbon transmitters for telephone, the mate of which we ‘ have in circuit here. “ Of course, it iB not decided yet to mount them in the ' form presented. The local battery !is to ho uttiiclicd to 1 tho two hinders at the bottom of the case. “ The automatic spring in tho fork of the hand tele phone close sthe local circuit when tho hand telephone is “ The magneto call batteries in this pair are very power, ful. 1 think they will “call” easily on a circuit to Phil. 1 iidclphia. “ Of course, it mny he desirable to mount the carbon transmitter with arrangement to call by the local battery. “ Very truly yours, “ G. M. PHELPS, “ Sup’t. ” “New York, June 2n, 1878. “Telegram to James Meiikiiiew, Superintendent. Phil¬ adelphia: “ T shipped yon by express last night a combination “ carbon telephone. “ Wo want to test the line as early as possible, as wo “ must exhibit it to the Western Union Executive Com- “ mittcc to-morrow at noon. Can you test to-night? “ Answer. “ GEO. B. SCOTT, “ Superintendent." To which telegram I received tho following answer: 933 “ Philadelphia, Juno 20 “ Geo. B. Scoirr. Superintendent, New York : “ Not arrived yet, hut I will connect you to Mr. Bont- “ ley now. He is waiting. Aro.vou ready ? “ J. MERK111EW, “ Superintendent.” To which I answered as follows : On June 20,1878,1 gavo Assistant Supt. AViloy tractions to put n puir of Edison carbon telephones lie private wire of .lames A. Banker, in Irvingl \rew York. This was done because the magneto t dames on said wire wore not giving good ft determine this date tram examination of the rocordi our prirato lino department. On .Inly 2!!, 1S7S, we put Edison carbon telephone r don’t know how many ; there were two or more- :be private line of Clam. L. Wright & Co., oi' J York, These were the first sets of Edison toloplic ,ve ]iut out on regular working lines apart from the lcriniciilnl i rials that bad been going on for some ti [ fix the latter dates by records of private lino dop 7 Q. Please explain what you mean by the exprosi ‘ private line V A. I mean spccinl wires erected and maintained h For ]iarlicular parties or firms between their place business and their factories or warehouses, and wl were used by those parties only. Ill such cases wires, instruments, telephones, batteries and cverytl connected therewith remained the property of this e pany, and were leased to our customers at a reg monthly or annual rental, as the case might bo. class of business formed a separate department of company, under the charge of Assistant Supt. Wiley before mentioned. S Q. State whether or not you know of the use of Edison Carbon Telephone between the Western Ul Office and Mr. Bentley’s office in Philadelphia? A. 1 have been present several times at such trials have spoken to Mr. Uently through the telephone, li cannot remember the dates. T believe some of t trials were beforo .lime 20, 187S, and some afterwar !) Q. I >o you know where any of the original Ed Carbon Telephones are? A. I believe them to ho nearly all in ]i l-~u : the American Bell Telephone Co., of H .1 321 which lie did ; noon after this, 1 also gave an exhibition of the carbon transmitter at tlio Franklin Institute, with tlie most satisfactory results. Answer objoctud to by counsel for Gray ns incompetent and inodmissiddc. It np- . pearing from the witnessoss own state¬ ment that lie is rending entries made by Counsel for Edison replies tlint the witness is entitled to examine any record to which bo may have hud access from time to time for refreshing his memory. 5. Please state whether or not you have had access from time to time, and examined the entries in the hook which you now bold in your hand, and so as to be familiar with the contents thereof? A. This is a book that I have frequently examined. This log contains the various doings about our office from day to day throughout the year. Any experiments which we make, or the erection of telegraphs or tele¬ phones are entered in this book by the superintendent. My frequent reference to the same, and my knowledge of the various uiTnirs going on at our place, that 1 am positive that the book is accurately kept, for 1 am per¬ sonally cognizant of a great part of the matter or mat¬ ters which ho enters there. 0 Q. Please state what instruments you exhibited at the Franklin Institute, and where those instruments A. The principle point in this exhibition was to show the great power of the carbon transmitter over tho or¬ dinary Magneto 'I deplume as n transmitter. Tho 'Edi¬ son carbon transmitter was used at Third and Chestnut BtreotB. Singing, whistling and playing on tho cornet was distinctly heard at that time. IIKNHY BENTLEY. 361 7 Q. Please stato whether any Edison’s carbon trans¬ mitters wore used publicly at tho Franklin Institute, and under what circumstances ? Adjourned for 30 minutes. Examination continued : A. Subsequently to this exhibition n . tho Franklin In¬ stitute, a carbon transmutor was introduced in the Franklin Institute. I have not the date, but can send it to you. This instrument remained there for several months, and in fact until the Philadelphia I.oeal Tel. Co. qqj discontinued its telephone exchange, by transferring its . interest to the Hell Tel. Co. of Pliila. This Edison carbon telephone was connected with the Philadelphia Local Telegraph Co., and was used by gentlemen connected with the Franklin Institute, and various scientific gentle¬ men who went there to see it working, in communicat¬ ing between tho 1- rankhn I nstituto and our office, also witli other points through our office. 8 Q. Did you make use of the Edison carbon trans¬ mitter at any other place about this time? A. March 25th, 1878, I connected one of our tele¬ graph offices at Broad and Chestnut streets, Philadelphia, with my private office, and used the said transmitter daily for several weeks. I have here present one of the instruments made use of by me. ggg (Instrument bore present offered for tlio inspection of tlio respective counsel, and us Mr. Ucntly does not wisli to part with the instrument, notice is given that a drawing will be made of tlio same, to bo marked “Bentley’s Exhibit Edison’s Carbon Telephone, March 28th, 1878. No. 2.” I 32!! 0 Q. Did you, in tlio month of April, 1878, iniiko use of nny Edison carbon transmitters? • A. I did ; April 2d mid 3d, 1878, T worked Edison’i carbon transmitter from Philadelphia to Now York conversing with several in the Western l moil I ipl office tliere. Among others with whom I conversed win R. H. Roeliester, the Treasurer of said Co. 10 Q. I ask yon whether Edison’ I I 1 1 was ever publicly exhibited in Philadelphia, Pa. } A. It was in the Academy of Music, anil an accouni of the same was published in the Philadelphia Jim/uirei Tuesday, April I Oth, 1878, and in various Philadclplii: papers of or about that date. (Counsel for I I II tl given in the Philadelphia Jimjitirn above referred to, ol tl I given in the Academy of Music, to hi marked “ Edison’s Exhibit L.”) 11 Q. Did you have anything to do with the exhibi t ion of the Edison carbon telephone at the Sinithsoiiiai Institute at Washington? A. I did ; I Hindu arrangements for the exhibition o Edison’s carbon telephone at the meeting of the Niitiona Academy of Science, at tho Smithsonian Institute, a Washington, and had the same connected by a wire o the Western Union Telegraph Co. with the Westcri Union Telegraph otliee, at Tenth and Chcstniil streets. 12 Q. Is this tho exhibition and use of the earbni telephones mentioned in the Washington Post of Apr! 10,1878, and also referred to in the Speaking Tele phone and Electric Light, by Prescott, pages 571), 581 and 881? A. That is it. 1 3 Q. Can you produce any other of tho Edison Car bon Telephone’s made use of by you, if so, please do 60: and state tho time, ns near ns you can, .wlion they were 'made use of ? A. I am not nhlo to produce any others than tho four which T have hero. Tho instruments present offered for in¬ spection of tho respective counsol, and ns Mr. Bentley does not wish to part with tho instruments, notice is given tlint a drawing will bo made of the same, to marked “ Bentley’s Exhibit Edison’s Onrbon Telephone, Nos. 1, 2, 3 and 4.” 14 Q. Please stato which of thoso’instrnmcntswasfur- fl( wished to yon first? A. Transmitter No. 1, 2 and 3 were in use at the Bnmc timo. No. 4 was also tried at tho same time, but not. with satisfactory results. Tho circuit-breaking key upon Exhibit 3, 1 had put on myself. T suggested to Mr. Edison tlint a transmitter made to hold in tho hand, like Nos. 1 and 2 were objectionable, because of their frequently getting out of adjustment, by tho combined warmth of the hand in holding thorn, and the breath in talking into them, nB well as by their being suddonly jarred by being taken up and laid down, or by any aud- * den concussion. I found that the hard rubber of which they were made expanded very greatly from tho warmth of the hand, and contracted greatly after the warmth of the hand was removed from them, and they wore laid f down and not used for a short period, so tlint tho rapid changes from heat and cold constantly interfered with tho propor adjustment of tho carbon button. Ho then made another form of transmitter, which he sont mo, which is hero marked No. 8. This worked more satisfac¬ torily than oitlior of tho others. 15 Q. Whore and wlion wore othor Edison’s Carbon transmitters publicly used, to your knowledge? A. Sept. 14, 1878, on a lino from my office, Third and Ohostnut streets, Philadelphia, to Frankfort Arsonal, 325 Philadelphia. September 20. 187S, from my office to the permanent exhibition, West Philadelphia. Sept. 20,1878, connecting my office with tho Drug Exchange ; on tliu same date, connecting the Commercial Exchango with my office. Sept. 21, 1S78, it was placed on a line from my office to that of .lessen & llnnnifen in Philadelphia. Sept. 2.1, 1878, it was placed on a line running from my office to that of Allison & Sons, West Philadelphia. All the above Edison Carbon Telephones were contin¬ ued in uso until the Philadelphia Local Telegraph Com¬ pany diseontinuedjts Telephone Exchange. In addition a large number of others were placed on lines from that time onward until the Philadelphia Local Telegraph Company ceased to act in the business. 1GQ. Was there any reason ns far as yon know why the Edison Carbon Transmitters were not publicly used to a greater extent than what you have named before September, 1878? A. The reason why we did not use them to a greater extent along prior to this was our inability to obtain them from the company manufacturing them '? 17 Q. Do you know whether Mr. Orton wrote to you upon tho subject of the Edison Carhon Telephone, and if so, about when and what was the result of such cor- respond cncc ? A. Mr. Orton wrote to me to the best of my belief, I think I have tho letter nt my office, to the best of belief in February, 1878, nsking mo to make some experi¬ ment with a view to the introduction of the Edison Carbon Telephone. I ngreed to do so, and Mr. Edison 6cnt mo the telephones sometime afterwards as 1 liavo previously stated. I said to Mr. Orton after I had scon tho Carbon Transmitter nt the Western Union’s Office that I believed it contained the germs which would revo¬ lutionize telephony, and 1 thought immediate attention should bo given to its development. Mr. Orton there¬ upon asked Sir. Edison to send me tho transmitter that I might make experiments with it. 18 Q. State whothcr or not any of tho Edison Carbon Transmitters had rubber between tho diaphragm and the carbon and whether anything was substituted ? A. Yes; tho first carbon transmitter I saw had rubbor between the diaphragm and the button. I tried various articles, not with entire satisfaction ; among other things, glass. ' Mr. Edison sent mo a spiral brass spring, which he thought would improve it, which was placed between the diaphragm mid the button. I was not satisfied with the results of this spring. Tho reason I was not satis¬ fied with the rubber under the diaphragm was because of its frequent liability to cxpnnd and contract from sudden changes of temperature, so varying the pressure on the carbon button us to render it necessary for mo to frequently alter its nil jiistmcnt. I found the most satis¬ factory result to be obtained by placing a piece of wood between the diaphragm and the button. This gave us tlio most satisfactory articulation we had yet obtained. Mr. Edison suggested that a piece of metal be placed be¬ tween the diaphragm and the button, whereupon lie sent mo from Menlo Park two diaphragms, with a small piece of brass tubing soldered oil the under part of the dia¬ phragm, such as uro now in Exhibits Eos. 1 and 2. When Eo. 1 was originally received it had not the metal undorncath the diaphragm, as is now found in it. 19 Q. To what extent and hy whom besides yourself was the Edison Carbon Transmitter publicly used on the occasions mentioned by you, on Feb. -1, March 2d, 10th, 15th, and nt the Franklin Institute, and March 25th, all in 1878? A. Mr. S. M. Plush, Superintendent of the Philadel¬ phia Local Telegraph Company, participated in theso experiments with mo on those dates. They wore used by various other parties on theso dates. I cannot men¬ tion any' further than Mr. Batchelor, Mr. Edison, Mr. Adams, Mr. Dcsher, Mr. Homnn, Actuary of tho Frank¬ lin Institute ; also Mr. J. B. Knight, of tho same insti¬ tution ; also Prof. Barker, of tho University of Penn_ lii-li we kept mi accounts. We left u carbon tra liter at the Franklin Institute for tlie use of its utile (1 the many scienlilie gentlemen who ealleil tin Ills was a public use, and we endeavored to have it iblie as possible. We placed tins instrument there, sving it to bo the most conspicuous place in which aid place it, as we were not aide, at this period pply instruments for the public to use. Croxs-exumintUioR, by AVilliam D. Baldwin, K iiiusel for Mr. Gray ; 19 ,\Q. I presume, Air. Bentley, you liave no peer •y interest in any of Edison's inventions, or in the s ct matter in controversy t A. As president of tbe Philadelphia Iajcal Tclegn ompany, and ns a stockholder in the same, I am in ited in telephony generally. I am personally a fri f Mr. Edison, as well as several other inventors, lm now of no interest that 1 would have in telcplr inch would uausc me to be intluenced in milking ntement which I linve hero made, at) xQ. As I understand it, then, your position is I f Mr. Edison and an enthusiastic admirer of his go: lid Jin volitions 1 A. 1 am an admirer and a warm, personal friem Ir. Edison, Air. Gray, Air. Phelps, and several o ontlcmon whose names aro connected with t hones. 21 xQ. You nre, I believe, a telegrapher of n ears’ standing, and of large and varn.il i \( : uch ! A. 1 have had considerable experience in telcgn ind in mnnagoinent of telegraphs. 22!.\Q. As a telegrapher, did you take a great inti n experimenting and investigating tho telephone, v A. I did ; to the best of my knowledge and belief, tl lirst telephones placed hoforo the public in Pliiladelph were Professor Bell’s inngneto-telophones, sent to me l Air. Hubbard from Boston. This was in the early sprit of 1877. I placed one of these magneto-telephones the Philadelphia Stock Exchange, to see if I could into duce it among the bankers and brokers. 1 found th it was not satisfactory, more particularly on account the great amount of induction, consequent upon the ii mediate proximity of a large number of tclogm] 23 xQ.. Examine the cut now shown you on page ! of Prescott's speaking telephone, and state whether it a correct representation of the first carbon transmitt sent you by Edison, as stated in your third answer? A* That to the best. of my knowledge is very simil to tho first transmitter, or the one first sent me. Copy of said cut is already in evidence tlii6 case ns Exhibit Journal of tho T egraph, April lti, 1878; fig. 2. 24xQ. Plcaso state wlint changes Air. Edison made the form of that, transmitter at the suggestion of A Plush and yourself, as stated in your third answer ? A. Air. Edison placed a pieeo of metal 1 tho diaphragm in order to improve its articulatii This piece of metal was not suggested by me, but stated to him that he must linve some substance tin which would not expand and contract so much as t rubber tubing which lie had placed there. I though piece of hard wood would bo liest, but it was difficult hold tho wood tlicro in a proper position always, so soldered a small picco of brass tubing underneath 1 diaphragm. This wo continued to use. Air. Edit also sent mo a spiral brass spring to go underneath, I rliniihrmrin no thn button, but wo thought it . caused 320 25xQ. Exhibit Bentley's Exhibit Edison’s Car¬ bon Telephone No. 1 is the first transmitter sent you by Mr. Edison, is it not ? A. L nm not sure whether this is the first instrument he sent to me. One or two instruments were sent buck to him. To the best of my knowledge mid beliof the instruments mnrkcd No. I mid No. 2 nrc the first in- striimcnts sent to me by Mr. Edison. One, No. 1, was sent hack and out open by Mr. Edison to show the in¬ side, so that a drawing could lie made of it. Which¬ ever one of those is the first, had the rubber tubing in it. We placed a solid piece of soft rubbor in it in place of the tubing. We put in paper, and leather and many substances. 2<ixQ. How long did you use the first transmitter sont you without alteration of any kind ? A. To the best of my recollection, we removed the rubber tubing which Mr. Edison had placed there, and tried in its place various other substances within a week or ten days after we received the first transmitter. ■ 27.\Q. Which of the substitutes you used for rubber tubes produced the best results? A. A piece of hard wood produced, in our opinion, the clearest articulation. 28xQ. Who suggested and who applied a piece of wood ? A. 1 did. I think the first public exhibition of any carbon telephones by me. outside of our own building, was one at. the Franklin Institute. 2!)xQ. Did the carbon transmitter exhibited at the the Franklin Institute have the piece of hard wood in it or the soft rubbor tube? A. I do not remember. 30xQ. How was the carbon transmitter subsequently introduced in the Franklin Institute, stated in your 'seventh answer, constructed in this respect ? A. I think it had the metal tubing underneath the !Hx<4. Uow was it as to tho one exhibited at the Acad cmy of Music, April 10, 1878, ns stated in your tenth answer? A. To the best of my belief Mr. Batchelor, who came over to Philadelphia with Mr. Edison's phonograph, brought that transmitter with him, and I do not know how it was constructed. 32xQ. IIow was the telephone used at Washington at the Smithsonian Institute, as stated in your eleventh answur. constructed ? A. That carbon telephone, to tho best of my belief, had a piece of meta tubing underneath tho diaphragm and was taken to Washington by Prof. G. F. Barker. I sent it with him to make tho experiment with me. 988 :13.\Q. At what time did you receive ExhibitNo. 3? A. I received No. 3, written a few weeks— I cannot say the date— within a few weeks after No. 2. I don’t rcinemher whether the hard rubber contact piece between the carbon and tho diaphragm was on it when it first By Col. Dvicn: 34xQ. These instruments you have furnished ns ex¬ hibits, do you know where they were manufactured, and by whom? 34xQ. They were all sent me from Mr. Edison’s shop by Mr. Edison, and l have always understood from him that they were made by him. To the best of my under¬ standing and belief they were so made. 35xQ. In regard to tho removal of tho rubber tub¬ ing and tho substituting of something else in place of it would you have been willing to have attempted tho general uso of those instruments without tho change in their construction you have testified about? A. No, I would not linvo been satisfied to use it in that form with the rubber tubing, although it would not 331 Iinvo appeared so satisfactory to tlic public as .with the OKOIiOK M. IMIUI.1'3, ,11!. DOt IIENBY BENTLEY. Adjourned to Friday, January 7, 1881, at 10 o'clock A.M. G. T. P. 140 Nassau Stiieet, New Yoke, N. Y. Friday, January 7, 1881, Met pursuant to adjournment. Counsel present ns liofore. Geokoe M. PiiKLrs, Jr., being duly sworn, deposes and says, in answers to interrogatories prosposed bv L. W. Sorrell, Esq., ns follows: 1 Q. Please state you name, age, residence and occu¬ pation? A. George M. Phelps, Jr., 37 years of nge, residence, Brooklyn, N. Y„ occupation, Supt. of the Western Elec¬ tric MTg Co., New York. 2 Q. Please state whether yon arc acquainted with Thomas A. Edison, nml if so, how long you hare known A. I am, and have known him about sevon years. 3 Q Do you know anything in relation to the early use of the Edison Carbon Tclophono, and if you can give any dates upon the subject, pleaso do so? A. The earliest date of its use, outside of experiment¬ ing in the workshop, of whieli I have personal knowl¬ edge. is May 23d, 1 S78. On that date I used one or two carbon transmitters in tho lecture room of Dr. Wells’ Church in Brooklyn, for tho purpose of exhibition to some friends and acquaintances. There were also pres¬ ent onougli other persons to mako an audience of about 300. 1 used on this occasion a carbon transmitter, which I understood to have been made by Mr. Edison, and also a carbon transmitter, made nt the factory of tho Western Union Telegraph Co., Now York. On that occasion I gave a lecture, of which T have notes hero pres¬ ent. This lecture was intended to lie a brief exposition of tho history of the telegraph and also to give some account of the principles of tho telephone. 1 gave a pretty minute description illustrated by n magneto-telephone, tnken to pieces before the audience ; but gave no detailed description of the carbon transmitter. The carbon trails- 0112 mitter was used only nt tho distant end of the line, from which communications wore sent to the lecture room. The sending instruments were in the pastor’s residence, not far from the church building. 'During the exhibi¬ tion, Dr. Wells, the pastor of the church, mid several other persons were ill tho room from which the trans¬ missions were made. The speaking and singing at tho transmitting end was done by several persons. Tho ex¬ hibitions of the telephone were very successful. A qui'.rtctt of individuals singing together into the instru¬ ment were heard distinctly by all the audience, and Dr. Wells’ voice was recognized by tho audience when ho addressed them through tho telephone. The carbon transmitter was used in nearly all tho experiments made during the evening. The instrument used ns a receiving )93 telephone was a magneto-telephone, of tho variety known as “ drown.” 4 Q. Had you before this loeturo been familiar with «• tho use of tho magneto-transmitter; and if so, how did tho carbon transmitter on tliiB occasion compare in effec¬ tiveness with tho magneto-transmitter which you had before used ? A. I had boon familiar with tho use of tho mngneto- tolophono, and found tho carbon telephone to bo much _T tlio wire tlmn I could do witl lift I wns faiidliiir with, use of the Iiilison carbon tele a personally uci|uuintcd i lutes us to particular uses altci . On May 31, 1878, there wa ini Union Telegraph Company’ Stock Telegraph Company o son carbon transmitter. 1 lint ik, under date of May 31,1878 ;, No. 037, with Edison earboi era), and one hi 1 1.1 . and S. Co. for trial.” Thii dwriting, and wns made on 6 'he note hook containing tlii for noting vnrioi f the Western Union Mnmifac Jtlier or not any carbon tele in Western Union Manufactory r what instractions, how many i number of carl t 1 . 1 o i t the Western Union Tel. Co.’i m by the Gold nnd Stock Tel hi was under date of May 31st i Union factory .) line 1st, am a transmitting telephones. Tin to the sainplo delivered May 31 node on Juno 13th, whon an is uinde. Another delivery ol vo was made June Slst; another July 17th; another silvery often July 93d; another delivery of litlty July 4th, and the whole, dalivory of 6n0 was completed at iflcrent dates by Dae. 10, 1873. 7 Q. What was the character of the instruments com- using this fill!)! A. Tlioy wore of the same character as the instrii. louts which Ins horotofo -o boon produced, marked “ Ex ihit Edison Carbon Telephone. S. L. G.” I think this istrirncnt is ono ofthe make of the Western Union Co, ecniise it embraces points in its construction which rn'inatud at the Western Union factory, and which liaracterizj nearly, if not. rpiito all, the Edison Carbon ’clephoncs made in that factory. These points aro tlio cinis]iliencal knob upon wlueli tile dinphragm acti liulc of thin sheet brass and gummed to the glass disc; lie ear provided for attaching the transmitter to a joint d arm, and the shape of the iron case. Soon after wt ogun making these, others wore begun by the Western ilcctric Manufacturing Co., of Chicago, nnd some ol liose made by them may have resembled this one in the etails 1 have mentioned. In most of those made nl ihicago the back of the case was more bulging, instead f conical, nnd the whole ease was heavier, and the eni or attaching the transmitter to the jointed arm did nol arm a part of the transmitter ease, but wns made ns ii sparate piece attached to it, aiul tlio adjusting screw bad slotted instead of a capstan head. And instead of the cmisphcric.nl knob attached to the. glass disc in this ex. ibit, the later Chicago transmitter had a pioco of brass abc cemented to the diaphragm, and having three feel t the end nearest, the carbon. 8 Q. Stnto whether or not the Edison carbon tele hone as used since 1878 corresponds generally with tin istrmnont lioro present marked “ Exhibit Edison Car on Telephone 1” A. Yes j I consider they do. 9 Q. What differences, if any, can you point out ? nchnicnt nt contact strip. I lie soft carbon Imtton ctniiied, us Iiuforo; also, tlic electrical connections roiilil lilie to look at some ineitioramla licfoi’c nnswc his further. [After the return of this witness he sa; know of no further alterations, anil hi It 1 lcmonmdn for that purpose. 10 Q. Do you know anything in relation to tclepl istnnncnts furnisheil for use at Mr. Orton’s house ! A. I have in my note hook, the same hook referre efore, niuler date January 10, 187S, this entry : “ Telephone No. 48 sent to Mr. Present he used for test at Mr. Orton’s lion I have no personal knowledge beyond this — the lat the instrument referred to in this entry was senl le date specified ross-cxamination by J. J. Stoiikow, Esq. : xQ. Was the lecture which you delivered . . . « nidi you delivered nt ells’ Church substantially the same ns the notes wli m have produced and shown us ? A. It was exactly the same so fur as the MSS. is writ it in full, and beyond that point substantially ns indies 12 xQ. Please road to the Commissioner, to he tal >wn as part of your evidence, the portion wliicl nut out to you on pages 38 and 39 from the r ntton out in full ? A. t do so: W hen, about four years ago, Mr. Elislm Gray, Chicago, exhibited his system of transmitting music o telegraph wire in New York, n telegraph offii present ventured to predict that pooplo would bef long ho talking over the wires Ity 'V. I), Baldwin', Kb<j. : 20 xQ. Thu receiving magneto telephone, know . <Jro"'" l>v .vou in (lie lecture yon have :iuned, was the invention of your fntlier, was it not 21 xQ. Do yon know when instruments of that vere first iiiiulcor used >. A. They were first iniule some short time previo tlay 2it, 1878, and enine into use some time after Into, ns I recollect. 22 xQ. How ninny of them wore in use when ™ 1 " >o b t r yon ha vo spi A. Probably none. 2dxCJ. Please identify the enrlion trausinittcr nderstood to have been niado by Mr Kdison hv c xliil.it or l.y some brief description' ’ ‘ A. I see none here that resembles it very closely, ecollect it, m outside nppciinince. In general lentil •ns the same ns the one made nt tlio Western Lit ictory, used nt the snmc time. The precise diflon l details I cannot at the present time recall. It did nvo the car and pin on it for attachment to a job 21 xQ. By whom were the changes nindc in ' DWsed»ni"S",itter’ ""Ule nt th0 WMtorn Unio,, fac* A. By my father, Mr. G. M. Phelps. 25 xQ. AV as the carbon transmitter made nt the West- orn Union factory and used by you at Dr. Wells’ church substantially like tlio one shown in Patent 214,840 (fronted to Geo. M. Phelps, April 20,18701 A. I think it did not have tlio ear for attachment to a jointod arm, as shown in this patent, nml I am not en¬ tirely sure that it had the hemispherical knob attached to the glass disc;, but it was otherwise substantially the same as shown in this patent. 20 xQ. How long prior to May 28, 1878, had tele¬ phones been practically used on telephone exchange in New York City, to your knowledge! • A., Telephones wore furnished to the Gold and Stock Telegraph Co. from the Western Union Telegraph Com- 10,0 Jinny’s shop early in January, 1878. These were inng- neto'tclephoncs. I do not know that they wore used on telephone exchange. These wore of the puttorn called ’•Phelps Duplex,” similar as shown in Patent 200,280. This is the earliest delivery found in my note book. If I find an earlier one I will note it. The exact form of the instruments delivered at that time is shown in tho cut on jingo 28 of Prescott’s Telephone Said cut is as It is possible tlmt some of this lot were mmlo with tlio ljusting screw ns shown in llg. 803. instead of tho cap- nn liond screw in Exhibit Edison Carbon Telephone. Adjourned for one hour. G. T. P. jr Col. Dyer. 20 xQ. If the order of the Gold and Stock Telegraph nnpany, of May 81, 187S, was in writing, please fur- sh a copy of tlio same ? A. It wns in writing, liml I hero furnish tho following py of the same : “ Gold ami Stock Telegraph Company, “ Western Union Building, “New York, May 31, 1878. \ 0. Box 5045. 11 George Walker, “ Vice-President. 5eo. M. Piielps, Esq., “Sup’l.: ‘Dear Sir : — I am instructed by our Executive Coin- nittco to give you an order for live hundred Edison nrbon transmitting telephones, with Morse key and egistcr induction coil. IVe do not wish to order any Edison receiving msts. at present, intending to use ours and Gray’s hand insts. as receivers. ■ ‘Wo wish this order pressed as rapidly as possible. Vhen you have determined on the form and made an stimate of tho price, I w’d like to. hear from you. “ Yours very truly, “GEORGE WALKER.” Endorsement on same. 341 OEOKOE M. PIIELPS,ri(. 1021 “ Geo. Walker, V.-Pres’t G. & S, Co. “Juno 1, 1878. “Ordering 500 Edisou Carbon Transmitting Tele, “ phones. “ 490 delivered up to Nov. 21. “ 8 “ Dee. fl. “ 1 “ “ 10. “ 500 completing order.” 30 xQ. At this time was your company manufactur¬ ing any receiving instruments ; and if so, which ? A. Yes. we were manufacturing tho receiving tele- 1022 phone known as the Phelps Duplex, and had begun to make some receivers of the variety called “crown.” 31 xQ. Was your company in a-position to ninmifac-. tore any telephone instruments ut tiiat time, or was it confined to those for the Western Union Telegraph Compnny ? A. Wo lind tho tools nnd were to manufacture what¬ ever was ordered by the Western Union Telegraph Co. Re-direct by L. YY. Seiikell, Esq. 32 r-c'. . Q. Did tho Western Union Manufactory munuincturc instruments for other parties tlinn for the AVestern Union Tolcgraph Co., or pursuant to tho ordor of the Co. in 1877 and 1878 ? 1023 A. The only manufacturing done was for the AVestern Union Telegraph Co., or upon their authorization, if for any' other parties. 33 R-D Q. Do you know whether Mr. Edison had endeavored to get any telephones mndo nt your factory , earlier than tho ones of which you speak? A. 1 do not. GEORGE M. PIIELPS, Jr. 843 1027 140 Nassau St., Nkw Your. Jan. 7, 1881. Samuki, M. Fi.usii, being duly sworn, deposes and says, in answer to interrogatories proposed by 1. W. Serrell, Esq., ns follows : 1 Q. Please state vonr name, age, residence and occu¬ pation 1 A. Samuel JL Flush ; 1 am 40 yearn of age ; reside in Philadelphia, and am Superintendent of tho Philadel¬ phia Locul Telegraph Co., and have been in that position about ten years. 2 Q. State generally what duties yon have performed m that position ! A. I have had charge of the entire business; among other things I have kept wlint I call a '• lo- •• it is a daily memorandum book, and I have the same hero present. k,m'v “'O'thing in relation to the early ISC of the Edison carbon telephone, and have you any means ot fixing dates ? J wat; Jb! I kn7 °! Bt'Veral P,,blie "Bes ‘n which it which 1 8 « , , ,lmong 4,10 ,,lore important of 1 ted that institution ; a special wire was run for this if March 20 1878- "cIi.,0,.k1s 1,8 foUows, under date AQr '' h.!lt la'ld of cl“'bon telephone was this one ? the carbon transmitter of Edison exactly ns it was at tho time of this exhibition and use at tho Franklin Institute. This articlo was written by myself during tho month of March preceding. Counsel for Edison offers in evidence tho copy of tho journal of tho Franklin In¬ stitute before referred to, and makes pages 2GG to 280, inclusive, an exhibit in this case. i> Q. What object was there in leaving this Edison Carbon Telephone nt tho Franklin Institute for public use from March 20 1S78, onward to the time you have 1028 named ? A. It was loft there nt the request of tho Secretary of the Institute, for the use of the business men and others calling to communientu with our office at Third street, and also for tho purpose of introducing it generally when they could bo obtaiiicl. 6 Q. Before this timo, had you had anything to do with tho Edison Carbon Telephones ; if so, state what and when ? A. Yes, almost constantly from Feb. 4 until tlint time. This Edison Carbon Telephone was shown from time to time to numerous persons calling nt tho office of tho Philadelphia Load Telegraph Co. It attracted a great deal of attention, and parties wore very anxious to get them prior to the exhibition at tho Franklin In- 1020 stituto. Parties anno there to compare them with the magneto telephones that wore in use before that timo, and they compared vory favorably with these magneto telephones. I only kept memoranda in this log book of those exhibitions which wo considered wonderful. Among those memoranda I find an entry, under dato of Feb. 4, 1878, as follows: “ Testing Carbon Transmitter with Edison, on 7, at nlo Park.” On March 3d, 1S7S, is tno iouowing cmry . “ Mr. Adams hero from Menlo Park, with Edison’s Carbon Telepliono. Made test to Wilmington and On March 10th, 1H78, is the following ontry : « Making test with Menlo Park via Now York, 1 38 ‘ miles, also to Menlo Park direct ; got miking distinctly, “ also singing, words in conversation sound nmtlled.” I remember the faets and the book conlirms mo astodntes. f had not known where telephonic communication had been made such a distance and would not have believed it possible. I have the -following entry on March 15, 187S. “,T. M. in Washington, made telephone tests 140 miles, got what was said distinctly.” J. M. aro the initials of James Merrihcw, Superin¬ tendent of the Western Union Tel. Co., who was in Washington tlint date, and carried with him that trans¬ mitter for the purpose of making this test with me, md the test was made at that time according to my re¬ cord, and it was satisfactory to the parties making it. Also March 13, 1878, 1 made the following record : “ Making telephone testa with Menlo Park, with new “ disc “ spring” test very satisfactory.” “ Put up at Bjoad and Chestnut streets, Edison set of telephone for test with this otlice.” These were put there for general public information tlint they might call and test the instruments themselves with the office at Third and Chestnut streets. This plnc'e at Broad and Chestnut streets, was a public reception room of the Philadelphia Local Tel. Co. Wo kept a young man at the publio reception room and parties going in there de¬ sirous of communicating with our executive offices, could use the telephone, and did so use it. This Edison Carbon Telephone was there fora considerable thno, but I don’t romombor how long. Oh April 2nd and 3d, 1 878, they wuro making a comparison between Edison’s Car¬ bon Transmitter and Phelps Magneto Transmitter in Now York. I find this fact by reference to my log afore¬ said. There is nothing stated ns to the results, but my recollection is that those in Now York got nothing from the magneto transmitter. By the carbon transmitter tlioy got talking. I helped to placo the car¬ bon telephone instruments in circuit that were used in the test between Philadelphia and tho Smithsonian Insti¬ tute at Washington, whore the Academy of Science was in session. This was done, April IS, 1878. I talked with Prof. Barkor at Washington, and also heard Prof. Henry speak. My recollection of tho date is further confirmed by the article in tho “Washington Post” of April 19, 1878. 7 Q. Were you present at the examination yesterday of Mr. Henry Bentley, and did you or not refer to the entries mnde ill your handwriting in your log book, by which to determine tho dates in 1878, when tho Edison enrbon telephone was introduced at tho various places mentioned '! A. I was present, and did refer to the entries in my log or memorandum book, by which to aid in determin¬ ing the various dates in 1878 when the Edison carb'on telephone was put into different places for further use. 8 Q. Please examine the instruments here present, - marked Bentley’s Exhibit Edison’s Carbon Telephones, — i Nos. 1, 2, 3, 4, and state whether or not you have seen the same before, and where the instruments have been, ns far as yon know ? A. Yes; I have seen them, and recognise them ns among tho first. I believe they liavo never boon out of tho possession of Mr. Henry Bentley. They were fur¬ nished by Thomas A. Edison of Menlo Park, and I bc- lievo tlioy were mudo in Mr. Edison’s shop, ns Mr. Adams so stated to me. T know that the Instrument No. 1 was cut open, so that tho internal arrangement 346 .347 could bo scon. This was done some wliilo uftor tho in strumonts bud boon used by Mr. Bentley nml myself. Parties wanted to know how they were made inside, and wo took this moans of showing them. Cross-examination by W. D. Baldwin, Esq. : 9 xQ. By whom wns the hemispherical projection on a piece of hard rubber, between the diaphragm and soft carbon button, shown in Bentley’s Exhibit No. 3, dc- • vised and applied! A. It wns placed there by one of the mechanics in our shop, hut I don’t know who devised it. 7 By Col. Dykk : 10 xQ. Did you hoar tho testimony of Mr. Bentley • yesterday ; do you agree with him in tho various state¬ ments mndo by him ! A. Tes; I agree to all tho statements mndo by him, which have any corroboration to ,tho records of my mem¬ orandum book. SAM’L M. PLUSH. GEO. T. PINCKNEY, Notary. Met pursuant to adjournment. George L. Wiley, being dnly sworn, deposes and says in answer to interrogatories proposed by L. AV. Serrell, Esq., as follows : IQ. Please state name, ago, residonco and occupation! A. My numo is George L. Wiley. I rcsido in Eliza¬ beth, N. .1., and am 31 years of age, and am now As¬ sistant General Superintendent of the Metropolitan Telephone and Telegraph Co. 2Q. In what were you engaged in 1877 and 1878! A. I was Assistant Superintendent of the Gold and Stock Telegraph Co., and Superintendent of the Now York Private Line and Telephone Department of tho Gold and Stock Telegraph Co. 3Q. Are yon acquainted with Thomas A. Edison ! A. I am, and have known him since about 1871. 4Q. What early knowledge, if any, did yon have of Mr. Edison’s inventions of telephones ? H A. So far as I can recollect, theso instruments which I hero produce are tho first I over saw. It is possible I sow others earlier, but do not recollect them. “ Wiley’s Exhibit, Edison Receiver, No. fiQ. About what time did theso instruments come into your possession ! A. I received the receiver October lii, 1877, and tho transmitter October 17, 1877, which fact I am able to : establish by entries in books which I have here present. One of the books which I now produce for exam¬ ination of counsel was started for the purpose of keeping a record of this particular class of in¬ struments, and by the entries therein I dotermino tho aforesaid dates. On October 15, 1877, I re-' I received transmitters identically tho same ns this trans¬ mitter No. 10, and they wore numbered 23, 24, 25, 20, 849 7 aiul 28, which fact I also determine uy tnc mm uoua mt I cannot toll now wliere they are. 1 had receive, rom Mr Kdison, botoro the date of October 15, 1877 notlier carbon transmitter, hut it did not work entirol; atisfactory, and I cannot now tell exactly what it m OQ. Can you tell generally what was done with tlics arbon transmitters ? A. I worked tlicso instruments, or others ot the sain 0t _ that is to say, T sent transmitter No. 23 anil n civer No. 25, October 15, 1877, to 180 South street 7ow York, one of our branch offices that «as umnecto rith the main offico 107 Broadway. I believe I worke hose the same day. Thcfc instruments worked wel chile in adjustment; they had to ho adjusted frequently Chcso instruments were kept nt the i>lftces named air iscd for some time. I am unable to state how long; i nay have been a month. Many of our men tried an iscd these instruments, lu comparison with tho ma* .eto telephones that had before been mado use of, tlics inrbon telephones were louder, but not as clear. 7Q. hi whoso possession have these instruments yo lore produce been ? A. They have been either in my possession or at tli dace, No. 198 Broadwny, where our company had tore room, or in the possession of the party liavin barge of the offico and store room aforesaid. S Q. Did Mr. Johnson have any such telephones i foil here produce, from yon ? A. He did ; lie had receiver 24 nnd receiver 27, an iransmitter 24 and transmitter 27. He borrowed tliei with tho understanding that they were to ho used i public cxibitionB about to bo givon by him. He said 1 ivas traveling nnd going to give such exhibitions. 9 Q. Did Mr. Edison, at any time, imiko for you . jjive to you any sketches or drawings of lib) earhou tel phones? A. Ho did, more than once, nnd I prodneo one s here; ho mado this one tor me in my presence, on Del ber 24, 1877. 10 Q. Did ho or not, accompany tho said sketch which yon hero produce, with any explanation? A. IIo did, with considerable vorbal explanation; ho gave it as a description of the transmitters received on Octobor 15 and 17, 1877. He made the sketch tlint is marked “ Edison's Pressure Relay,” and described how by a variation of pressure nt tho points of contact, with tho carbon, tho resistance of tho circuit was increased and decreased, mid stated that tho carbon telephone was to some extent an elaboration of that plan. This is tho substance of his statement. The lowest liguro under tho part marked “ Pressure Relay,” showed the enrbon transmitter corresponding with tho instruments that I had before received. II Sketch referred to is hero offered in evidence by counsel tor Edison, marked “ Edison’s Sketches for Mr. Wilcv, Oct. 24, 1877.” 11 Q. Stato who made tho diagrams or sketch, and who wrote the dntes? A. Mr. Edison made the diagrams in my presence, and I then dnte.l it in two places, and this paper has been in my possession ovor since until it was produced here to day, and has remained unaltered iir every respect. 12 Q. Have yon any knowledge of tho use of tho Edi¬ son Carbon Transmitter after the date that you men tion? jo A. There were instruments reeoived from time to time from Mr. Edison and from tho Western Electric Co., nnd tested nnd used, nnd I find from entries that on June 29th, 1878, two Edison Carbon Transmitters, with induction coils, were placed on tho lino of James H. Banker; this was in the department of tho Gold nnd Stock Co., known ns tho private lino. On or about July 23, this same kind of Edison Carbon Transmitter was sent to Charles L. Wright & Co., for tlioir private line, and our records prove that shortly aftor this timo tho “ Prescott’s Exhibit Edison’s Mag¬ netic Receiver, No. 7.” " Prescott’s Exhibit Edison’s Mag¬ netic Receiver, No. 8.” “ Prescott’s Exhibit Edison Trans¬ mitter, brass tube with month-piece and “ Prescott’s Exhibit Edison Iron Dia¬ phragm Receiver, with iron bnso and electro-magnet.” 5 Q. State whether or not the exhibits here produced by you have been in your possession or generally under lOfiC your oversight ever since they were furnished you by Mr. Edison ? A. Yes, they have been, and no alteration has been made on either of them that I am awnre of. <i Q. So far as the instruments Edison’B Carbon Trans¬ mitters No. S and 10 arc concerned, state whether or not they were practically operative instruments, or whether or not they are now in a condition for use after adjust- A. I believe that they were operative instruments, and that they can be made so now without any material change ; that is to say, they may need cleaning and ad¬ justment to restore them to their original condition, so that they can be practically used. Cross-examination waived by counsel for Bell and 1050 Blake. GEO. B PRESCOTT, Jit. . 10, 1881, at oleven Monuay, Jan. 10, 1881. : i'o67 Met pursuant to adjournment. Counsel for Edison offers' in evidence copies of the fol¬ lowing patents, most of which have already boon offered in evidence, but which an? included in this list for con- 73 Melt 13, 1873 Aug 12, '873 '41,777 Aug •3. 1875 Jan. 19, 1S75 158,787 • 1 5 Apr. 6, 1S76 Dec. 11, 1877 198,088 116 Apr. 6, 1876 Dec. 11.1877 198,089 117 May 16, 1876 Jan. 16, 1877 186,330 118 May 16, 1876 Dec. it, 1S77 . 198,087 119 May 16, 1876 Oct. 10, 1876 182,996 10S8 122 Dec. 19, 1876 185,507 *35 July 20, 1S77 Sept. 24, 1878 208,299 136 July 20, 1877 Apr. 30, 1878 143 Aug. 28, 1877 Apr. 30, 1878' 203,015 146 Dec. >3, 1877 30, iS78 203,013 147 Dec. ■3, 1877 Apr. .3°, 1878 203,018 >5' Mar. 7, 1S78 Apr. 3°, 1878 203,016 *75 Mar. 3', tS79 Nov. 25, 1879 221.957 English Patent, No. 2,009, July 30, 1877. English Patent, No. 2,396, June 15, 1878. “ Also a certified copy of Edison’s Caveat, No. 73. Adjourned to Tuesday, Jan. 11, 1881, at eleven. - GEO. T. PINCKNEY, CiiAiti.Ki; Batciiklok, being recalled, in answer to in¬ terrogatories proposed by L. W. Sorrell, Esq., deposes 11s follows I Q. Please look at the two letters from Mr. Edison to Mr. Orton, heretofore offered in evidence, doted Aug. 31, 1S77, and Oct. 15, 1877, and state wliat instruments are referred to in them? A. I believe the pair of telephones referred to in let- tor dated Ang. 31, 1877, are not here produced, but were identically the same as tlio drawings, iigs. 1 and 2, in Edison’s English patent 2,909, dated July 8(1, 1S77. The two which he refers to astlio “ new pair” were a slightly different design in the ontsido cnse, hut similar in the inside, and they were delivered us stated. The instruments roferred to in letter dated Oct. 15, 1877, wore similar to transmitter and receiver hero present, and mnrked Prescott’s Exhibit Edison’s Carbon Transmitter No. 8 ; and Prescott’s Exhibit, Edison’s Magnetic Receiver No. 7 ; the call hells reforred to were similar in design to the drawing shown on exhibit sketch, 142-12. 1 heliovo these instruments named in the letter were all delivered, and were practi¬ cally operative instruments. They had been operated in tlio factory before they had been sent to Now York. I recognise “ Bentley’s Exhibit No. 4,” as one of the in. strnmonts, made in Mr. Edison’s shop, and sent to Mr. Bentley, after the Carbon Transmitters, with hard rub¬ ber cases, bad been made. This iron case instrument was made about Jan. 1878, and Mr. Adams took sovcral of them to Europe with him, in March, 1878. I recog¬ nise the four carbon transmitters ■ produced hero by Mr. Bentley, as instruments made in Mr. Edison’s shop, and sent to Mr. Bentley. The hard rubber trans¬ mitters were made during November, 1877. I deter¬ mine that dato by Edison’s Exhibit, sketch 149-18, ns said drawing represosonts accurately the exhibits pro¬ duced by Mr. Bentley with hard rubber cases, and marked Bently’s Exhibits Edison’s Carbon Telephone Nos. 1 and 2. Tlio instruments produced hero by Mr. 'Wiley, and marked Wiley’s oxhibt, Edison’s Carbon Telephone, No. 1(1., is an instrument that was mndo about the date of the letter to Mr. Orton, Oct 15, 1877, ns it was provided with the rubber reforred to in that lettor, and I believe was sent for his approval. The instrument represented in Edison’s Exhibit sketch, 121—12, corcspunds with tlio carbon transmitting instruments produced hero by Mr. AViley and Mr. Prescott, with the exceptions of having handles. Edison’s Exhibit sketch 1 19-12 represents a rcccivor similar to receiver No. 7 and S, pro ducod by Prescott, and No. 33 produced by 1004- AAMloy, with the exception of the handle. The instru¬ ments produced by Prescott, and marked “Prescott’s Exhibit, Edison’s Iron Diaphragm Receiver,” wnB made in Mr. Edison’s shop. I believe, early in 1870, or about the middle of 1870, and ns far ns I can tell, re¬ mains unchanged. It was used ns a receiver of musical sounds, such ns singing. The instrument nmrked, “Prescott’s Exhibit, Edison Transmitter, brass tubes with month-piece and iron base,” was made in the early part of the year 1877. I determine this date by Edi¬ son’s exhibit, 130-11, wliioli corresponds with Edison’, Exhibit Instrument, 130-1 1 . and also by Edison's exhib¬ it sketch, 11-12, because I know that tlio snid instru¬ ment produced by Mr. Prescott was mndo a long time previous to one of them being altered to an instrument, 1005 ns shown in exhibit sketch, 11-12. This instrument is now in a condition for transmitting musical sounds, and has been sounded on numerous occasions. Cross-examination by W. D. Baldwin, Esq. , counsel for E. Gray. X-Q. 2. Please state what pecuniary interest, if any, you liavo in the subject-matter in controversy, and your present relations with Edison regarding electric telephony ? 357 OJIAULKB JJAMIIIOOB. A. I have not tl.o slightest pecuniary int“rcst i,! ‘1'“ result of this controversy. All the money that I have received from 1 the telephone has been paid to n by Mr. Edison for work that I have done on tho neces¬ sary experiments Under his direction. Cross-examination waived by counsel for Bell and Blako. CIIAS. BATCHELOK. o/ Tho Interferences on Telephones: Tnos. A. Edison, Elisha Guay, A. G. Bell, and others. C No. 1. N, and New Yoke, Jan. , 1881. It is hereby consented by and between the counsel for respective parties to above iinmcd interferences that tho 08 deposition of Charles Batchelor, taken on Jan. 12, 1881, behalf of T. A. Edison, ho considered ns tnken witirin tho timo allowed by the Patent Office for taking 1009 testimony on behalf of said Edison. Oross-oxamination waived by me : J. J. S. JAMES J. STORROW, Counsel for Bell, Borlinor & Blake. FRANK L. POPE, For Dolbenr. BALDWIN, HOPKINS & PEYTON, Attorneys for Gray.- GEO. W. DYER, For Irwin and Voelkor. 107® GRIDLEY & CO., 1 Attorneys for McDonough. Intebffkenoe on Telephones Tuos. A. Edison, E. Gisay A. G. Bell, and others. New York, Jan. 10, 1881. In tho abovo cases it is hereby agreed that the evi¬ dence of J. T. Murray may bo taken at any time beforo tho closing of tho ovidcnco in behalf ot A. G. Bell. This arrangement is inode in consequcnco of tho sickness of said Murray. Au'd it is understood that tho conven- ; Cases A to N, and ’ No. 1. i 1071 032 ienco of counsel is to bo consulted as to tno timo of tak¬ ing bis evidence. BALDAVIN, HOPKINS & PEYTON, Attorney for Bell and Blake. Attorney of Record for Richmond. Attorneys for McDonough. IN THE U. S. PATENT OFFICE. 4 The Interferences on Telephones: - ljf ^ ^ ° ’ ntl Edison, Guay, Bell, Doi.nnAU, MoDonouoii, Richmond, Vokl- kee, Ikwin, and Blake. Pursunnt to consent it is hereby stipulated by and be tween tho counsel for the respective parties to ubovi 361 dUU .Joseph t MVKItAY. Present— L. W. Skiiiiki.i,, Esq., on behalf of T. A. Edison. W. D. Baldwin, Esq., on lieluilf of E. Gray. .T. .T. Sronuow, Esq, on belnilf of Messrs. Boll and Blake. Joseph T. Muiihay, being duly sworn, deposes and says, in answer to interrogatories proposed by L. W Sor¬ rell, Esq., ns follows; 1 Q. Please state your name, age, residence, and occu¬ pation ? A. My name is Joseph T. Murray, age 40 years, resi¬ dence Newark, New Jersey, occupation telegraph instni- 2 Q. Are you acquainted with Thos. A. Edison ? A. Yes, sir; I first knew him in January, 1870, and up to the present time. 3 Q. Did yon ever make any telephone instruments for him ; if so, when first? A. lespl made experimental instruments for Mr. Edison previous to getting an order for 100 instruments from him. 4 Q. l’lcaso look at the telephone instruments hero present, and state whether yon made any of those instru- A. I made the transmitters and receivers which liavo heretofore been produced, having wooden cases, and they are marked “Prescott’s Exhibit Edison’s Carbon Trans¬ mitters Nos. 8 and 10,” and the two receivers, marked “Prescott’s Exhibit Edison’s Magneto-Receiver No. 7 and No. 8.” o Q. About when were these instruments made, anti how do you fix the date? A. I lix the date by an order given mo by Mr. Orton, Soptcmbur 17, 1877, which is noted in my order book lioro present, and exhibited to counsel ; also, from orders given by Mr. Edison to me calling for changes, and by bis foreman, Mr. Bntclielor. I produce here a paper dated Oct. 8, 1877, referring to changes that were to bo made, and those changes were made by me ; and one of tlioso changes was a Hull-holder, which 1 hero produce. (Counsel for Edison offer the paper in evi¬ dence marked “ Murray’s Exhibit, Oct. 8,1877,” and the device referred to mnrkcd “Murray’s Exhibit, Edison’s flnffliolder.” ) 1089 I als o liavo a memoranda of alterations, dated Oct 20, 1877, which I was ordered to make by Edison him¬ self. 0 Q. "Wero these 100 instruments all made and sup¬ plied at once, if not in what manner? A. No, sir; sometimes in pnirs, and in different num¬ bers nB they were called for, Mr. Edison usually took them over. These were tested and slight changes made from time to time to make them more perfect. These instruments No’s. S and 10, are in the modified form. The changes spoken of in the oilier of October 20, 1877, have been made in these particular instruments. (Counsel for Edison offers tho paper in evi- 1083 dcnce, marked “Exhibit Murray altera- ! tions, Oct. 20th, 1877.” 7 Q. Please look at the Exhibit “ Edison’s letter to Mr. Orton, Oct. lfi, 1S77,” and state if you know what tho instruments are that nro referred to therein ? A. This relates to the sheet rubber that we used in tlioso telephones, such ns Prescott’s Exhibits, No. 8 and IP. I had rubber diaphragms and had to supply tho mica. I made the six telephones with tho call bells spo- letter. Iliad tlio order for the 100 tele this lottor of October 15, 1877. Tlio ivere made from time to time wero a means tl.e expense of these instruments above the ®e instruments that wero made pursuant to from Mr. Orton what device was made use 3 tl.e tension of tl.e electric circuit ... the regulated by pressure against this Huff , lingo in with the silk fluff. Mr. bd.son pu istrun.cnts himself and adjusted them, 1 laco ill Menlo Park. ■ions to October 8, 1S77, had yon, or nol y direction for the mniuifactnro ot 100 e inul was* to work on them. I know this fa. tement that is made on the Exhibit Octobi .out how long a time was . 1 1 order of 100, including the changes that we icier the instruments more perfect ? irder was given September 17, 1877, and tl he instruments wore made by me, and so. Bred from time to time to' Mr. Edison; t the order was delivered to Western Unit o tension regulator was tilled by Mr. Ed.s. 'U.uciits were all delivered by me with... t ... the reception of the order, re there any other instruments that have bi a this ease that you manufactured ? _ _ ; this instrument, hero marked “ Edison s rume.it, 180-11,” wire made by mo; my nn rout of it. Ibout when was the same mado, and how .lino the time? July, 1877, 1 made four of them. I am . ino this date by a drawing which 1 hero I cl. drawing is dated July Otli, 1877, and 1 coivcd it about July lltli, 1877, and went to work and got these instruments out as soon ns possible. I saw tlieso instruments tested in tlio Western Union Building. I find by reference to my order-book that tlieso four in¬ struments wero ordered June 11, 1877, and shipped August 10, 1877. Drawing ottered in ovidei.ee, marked “Murray’s Exhibit Drawing of Instru¬ ment 110-11.” And Murray’s order-book referred to in lust answer, suliuuttcd to Counsel for examination. 13 Q. In wliat manner did those instruments work’ and what were they adapted to do ? A. They were built for telephonic purposes, so that two persons could correspond with each other from dif¬ ferent places. On what wire they wore tested, and at what distance in tl.e Western Union Building, 1 can’t sav, but think fro... Philadelphia. I spoke into tlio mouth-piece at the end of tlio case, the dinpligram being at the other end of the tube, with a device for transmit¬ ting clcetrie pulsations, and when receiving a message I listened at tho sa.no mouth-piece and turned a crank on the little disk at the side which revolved the small roller at the left hand of the machine, and fed along the chem¬ ically prepared paper, The friction vibrating the dia¬ phragm at tho side of the case to reproduce the speech p transmitted. These machines wore objected to on ac¬ count of the cost. Thorc was no other objection made to then, that I know of. 14 Q. Do yon recognize any other instruments as your make ? . A I made all the acoustic instruments that wero practically used. The experimental instruments he made. 1 recognize “Edison’s Exhibit, Loose Dia¬ phragm” as my make. I mado for Mr. Edison eight 365 istrnmonts similar to Mr. Edison’s Exhibit, Instrument i!)-13, but tlieso instruments were rather largor ami otter made. Adjourned tor ouo hour. G. L. P., Notary. 15 Q. When were these made? A. I find by reference to my order book that Jnnu- 1-y 2, 1878, 1 received an order for the telephones re- orred to in my previous answer; the order was for wolvo (instead of eight); T made twelve, and thesowere lelivered February 11, 1878. 'l’iiese instruments were nado to hold Edison’s button of lampblack carbon, they vero superior instruments, they worked practically. I mow they were practically used between Hew York and Philadelphia within a few days of the 'time they were lelivered. Mr. Bentley and Mr. Bachelor, I think, vero at the other end, and also Mr. Phelps, Mr. Orton, Hr. Edison and myself wore at Hew York. I have •eason to believe that tliese instruments wore ns perfect transmitters as have been produced liy any one since that time. 1 think Mr. Phelps’ son was with us at tlio New York office. These instruments were of the class and general construction shown by “ Edison’s Exhibit, Instrument 149-13,” but were larger and better pro¬ portioned. I don’t know whcre.uiy of these aro now. Cross-examination by J. J. Stoiuiow, Esq., counsel for Hell & Blake : 10 xQ. When did you first make any speaking tele, phones ? A. I bolievo the instrument marked Edison’s Exhibit Instrument 130-11 ; they wore ordered Juno 11, nnd shipped August 10, 1877. It is the motophono. 17 xQ. And tho next after were tho 100 ordered Soptcmbor 7, 1877, wore they ? A. Yes. 18 xQ. And tho next were tho twelve ordered Janu¬ ary 2, 1878? A. Yes 10 xQ. Have you over niudo any others? A. Ho; oxccpt that lately I have been experimenting for myself. 20 xQ. Please look at “ Edison’s Exhibit, Loose Dia¬ phragm, September. 1S77,” Ho. 97, and toll mo what tho four little pieces that look like blnck paper stuck on with ^ ■ shellac aro, and what they are for ? A. Some of these pieces were rubber, on some in- 1094 struincnts, and somo pieces of thick paper. They wore to raise the diaphragm oil the cores of the uiagnot. That was the way of adjusting the distance between tho cores and the diaphragm when the cavity was not bored quite deep enough. We pnt that on those that needed it, and did not on those that did not need it. xQ, 21. Look at Prescott’s Exhibit Ellison’s -Magnetic ■Receiver Ho. 8, the little patch shellaced on the wood under tho diaphragm in this instrument appeal's to bo made of rubber, was that put there by you for'the same purposo already mentioned, that. ,s the adj ,,.,t ,..e..t merely? A. Yes. xQ. 22. Plcaso look at your 10th X-answer; I under¬ stand from a remark you have just made that beforo 1035 June, 1877, you had done somo experimental work for Mr. Edison; is that so ? A..Ycs. xQ. 23. And I understand also that the experimental work you so did for hint beforo June, 1S77, was on his acoustic telegraph; is that so? A. Yes. r find in my order book tho following order: "Dec. 1-1, 1870. Six acoustic iiistrumoiits, six torus, ■o forks on hnsos.” Before that another order, dated Nov. 2, If 70, \V. . Co.: “2 acoustic instruments.” These were all practical instruments to be used on nes. X think that .is the first of my permanent work, it I did experimental work for Mr. Edison on that he¬ re, of which 1 have no account. xQ. 2-t. Yon and Mr. Edison were partno.s in busi- Cross-exnminntion waived by Counsel for Gray. .1. T. MURRAY. I, Geokoe T, Pinckney, n Notary Public, within ind for the Comity of Kings, (certificate filed in N. Y. Co.), and State of New York, do hereby certify that tile foregoing depositions of Z. F. Wilber, Jos- iuli C. ReifT, Edward II. Johnson, Robert Spice Charles Batchelor, Geo. M. Phelps, Jr., Henry Bent¬ ley, S. M. Plush, Geo. B. Scott, G. L. Wiley, Geo B. Prescott. Jr., and Joseph T. Murray, were taker on behalf of Thomas A. Edison, in pursunnceof flu notice hereto annexed, before me at 14(1 Nassau st. in tlie City of New York, in said County, on tin lOtli and lltli days of December, 1880, and the 4th 5th, 7th, 8th, lltli and 12th days of January, 1881 and 10th dav of February. 1881. That each of said witness, ;ss was by mo duly lOSi) sworn before tho commencement of his testimony ; that the testimony of each of said witnesses was written out bvmvsolf; that the opposing parties, E. Gray. A. G. Bell. G. B. Richmond, W. L. Voel- Icer. .1. 11. Irwin, and Francis Blake, Jr., were pres¬ ent liv counsel (lint .1. W. McDonough, and A. E. Doll, . . did not attend either personally or by counsel) during the taking said testimony That said testimony was commenced at 10 o’clock A.M., on the lot ti day of December. 1880. was con¬ tinued pursuant to adjournment, and was concluded on the 10th day of February. 1881; that I am not connected by blood or marriago with either of said parlies, nor interested directly or indirectly in the matter in controversy. 1100 In testimony whereof, I have hereunto set. my hand and affixed my seal of [t-.s.] office at New York City, in said County, this 11th day of February, A. D. 1881. GEO. T. PINCKNEY, Notary Public. IN THE UNITED STATES PATENT OFFICE. In the Matter of Interference Edison, Dot.iiE.Mt, Guay, Bki.i., McDoxotm.i, Rich- Cases A to N and ’ T No. 1. , MONO, VoKr.KKIS, IltWIN, 1 Blake, Improvement in Telephones. New York, N. Y„ April 22, 1881. Geo. W. Dyke, Esq., Atty. for Irwin, Volkers, & Richmond— StK' Please take notice that on Wednesday, April 87th, 1881, commencing at eleven o’clock A. 369 368' a[ ,,t my oliice, 140 Nassau street, New York, N. y.’ and before a competent officer. I shall proceed to take the testimony <>r the following witnesses, its rebutting evidence in hehair of said T. A. Edison : Charles T. Hughes. Oil Fifth avenue and 1). W. Odiorne, 110 Walker street. Now York, N. Y. Martin Force. Menlo Park, N. .1. Ira S. Finch, Albany, N. Y., and T. A. Edison, of 05 Fifth avenue. New York, N. Y. The examination will he continued from day to day until completed. Yon are invited to he pres- LEMUKL W. SKRRELL, Ally, for T. A. Edison. Service of a copy of foregoing notice acknowl¬ edged this 25th day of April, A. I}., 1881. GEO. W. DYER, for Voelker & Irwin. GEO. W. DYER, A tty. or Record for Richmond. FRANK. L. POPE, for Dolhear. ,T. ,1. STORROW, 'Counsel tor Bell & Blake. ■T BALDWIN, HOPKINS & PEYTON, Attys. for Gray. GRID LEY & CO., Att ys. for McDonough. IN THE UNITED STATES PATENT OFFICE. Before, Hon. Commissioner of Patents, in the Matter of the Interferences on Telephones': Edison-, Bull, IIlakk, Guay, Dolbuai:, Tuwix, Rictt- moxij, McDoxouon and Yoklkkiss. Deposition of witnesses examined on rebuttal in behalf of T. A. Edison, nursuant to annexed no- Cases A to N and No. 1. • tices at the olllco of L. W. Sorrell, 140 Nassau street, 1 New York, N. Y., on Wednesday, April 27, 1881, at elevon o’clock, A. M. Prcsont : L. W. SERRELL, Esq. On behalf of T. A. Edison. W. D. BALDWIN, Esq., On behalf of E. Gray J. ,1. STORROW, Esq., On behalf of Bell & Blake. Col. G. W. DYER, On behalf of Messrs. Irwin, Voelker & Richmond, Counsel for Edison produces the original “Trans¬ lation by W. U. Translator of Reiss Telephone,” and states that he deems it proper to state that it has become injured : That ho furnished it to C. B. Menvin for the purpose of printing the descriptive portion ; that while in said printers hands some per¬ son lmd partially cleaned, apparently with rubber, the sheet on which the pencil sketches were made and rubbed out some of the lines ; and that he had takun the affidavit of Mr. Al,erwin showing that this had occurred while the paper was in his hands. Counsel makes this statement on the record so that the present condition of the original may be ac¬ counted for. 373 JOHNSON. of tho answer was objected to as irrc sponsive, ami that tlio qiiostion called for Jlr. Bell’s opinion as an expert with relation lo a contesting instru¬ ment. or Mr. Raison’s not referred to in Mr. Bell’s testimony, and tho character of which it was Mr. Edi¬ son’s business to prove, and which he had already introduced in testi¬ mony upon, and that tho question lo Mr. Bell was intended, not to dis¬ prove his case, but to prove Edison’s. Counsel Tor Edison replies that the Cross interrogatory 10 calls attention to the fact I hat the wi t ness had not, an¬ swered the question, and notwith¬ standing that, it was not until cross interrogatory 20 that si direct answer could be obtained. is not correct. The telescopic arrange- Edison’s instrument operates in fact to diminish the volume of sound, as tlio honed or shortened. Whether the in- iponds forcibly to any particular sound r 1 could only determine by actual ex- iVlial I do know to be the fact is, that jlrumcnl in question uny and all tones irought out. A. Tho experiments which I. have made person silly have been in tho direction of reproducing, on theso instruments, sirtiuiilntu speech, singing, and I Had no marked difference in the various tones used. In tho early experiments made by Mr. Edison, in whiuli I assisted, my receolleetion is, that these in¬ struments failed lo respond to any particular tone exclusively, but gave equally well all tones. These wore tho experiments conducted in Mi'. Edison’s Laboratory at Newsirk, about which I liavo previ¬ ously testified in these interferences. 4 Q. Have you made any tests with either the instrument A. or A', or any duplicate of either, and can you demonstrate whether or not either instill- 1X18 meat, A. or A', is capable of receiving articulate speech ? Same objection and motion. Same answer. A. I have made such experiments with duplicate of those instruments, and am prepared to demon strafe here, at the moment, that they act as very good receivers. The articulation being clear and distinct. r, q. Now, will you please, for the information of the counsel so cornier! the instrument A’, and test it in the manner spoken about i 1116 Same objection as before, and further objection that tlio counsel are neither judges or witnesses. I have connected up the instrument, Exhibit receiver, with an Edison Carbon transmit- n.,,1 .,in,„iicrl| in a very damaged condi- o hold tlio diaphragm i •, and find it, tilth ill, it being '<• (lie words in a distinct and audible s to (lie uirect. of tlio length of the tube 1 bold that the main, and perhaps the hat it basis to lake up the local sounds and echo Ilium back on the ear, thus, in esl roying the qniet. that is of importance liver,' but in addition to increasing the i. the tube increases tile volume of the omuls, so that the proportion of one or mains about the same, arunen No. t relates to “a spring forming me electrode of a circuit of a telephone antly pressed against the other electrode pliragin to maintain the required initial letween the electrode, and yield to the t of the diaphragm.” ii made any experiment to determine not. an instrument with a yielding elec- best form for general business purposes, it. is preferable to employ a rigid elect- liectiou with the diaphragm? Counsel for Youlker and for Irwin oh jects to this question and whatever answer may he made to it upon the ground that Yoelker and Irwin first took their testimony and Mr. Edi¬ son subsequently look liis testimony at great length in reply, and so far as relates to Yoelker and Invin, this is in no sense rebutting testimony and objection will be made and motion at the hearing to have it struck out or not considered so far as relates to Yoelker and Irwin. Counsel for Edison replies that Messrs. Yoelker mid Irwin have still op¬ portunity to take their rebutting evi¬ dence, if they desire, and that Edi¬ son’s rebutting evidence is not limit¬ ed to any particular time or subject, he being entitled to take at this time any rebutting evidence. A. I have made very exhaustive experiments with the express purpose of determining this point, and have satisfied myself, as well as many others, that the yielding spring is not only not required, but is an actual detriment to the transmitter itself. The most perfect articulation, combined with the great¬ est- volume, is obtained from a transmitter with an unyielding support to the carbon. 1 was led in the first instance to recover the ground which I had already traversed with Mr. Edison, and determine for myself whether in abandoning the yielding spring Mr. Edison had done the right or the wrong thing by the successful introduction of transmitters with yielding springs, and the frequent expression of opinion which reached me, that the yielding spring arrangement was superior to the nm. yielding. I became interested in a manufactory of telephones, and was ambitions to produce the best form of Car. bon Transmitter. 1 have tried upwards of fiOO dif¬ ferent arrangements of the niei'lmiiieal part of the transmitter, and have invariably failed to pmdnco anything with a yielding support, at all conipnr. able with the arrangement finally adopted by Mi. Edison. I mu familiar with every form of curlion trans. tt rinuse, and eat, testify with t U Mon from actual experience with them that tl c j fall far below the Edison arrangement in the cute function of a telephone transmitter, viz:— To reproduce us nearly as possible in clearness articulation, volume, and quality, the voice • speaker without suffering derangement. 1129 >int out which of tile exhibits in nsiilor to be the most perfect for tho unit ting nrtieuhite speech 1 rlteil “Exhibit Edison’s Cnrbon Tele- (|>age oil of vol. ‘ 1, or the record.) libit, Motophone," on page BIB, s the same character of transmitter by the changing or the adjusting back of the transmitter to the front phrugm ; the object of this change , that the support at the hack of the nf being upon the end of the ndjust- il lie solidly and permanently fixed lie ease, and therefore be more rigid died to the screw. tlie opportunity of more readily ad- intuining the adjustment of the ili- itlcy No. page 530, same vol., is g as “ Edison’s Carbon Telephone to let. 0, you speak of Mr. Edison ichling spring; what do you mean i, and wind led to this i s earliest form of transmitters in- il a yielding spring in some form ut. the time that he was in trod lie- nn to the attention of the Western Company, he made a series of ex- •rniino what tension of spring gave lie soon found that as lie in- ess of the spring the results be- iible. This led liiin to gradually ion until he had made one in a steel, 1-10 of an inch square, and urns or thereabouts. This he nat¬ urally considered did not yield to the vibration of the diaphragm at all, and as the results were so far •superior to the lighter forms of springs used, he jumped to the conclusion that a rigid support was the correct thing. An experiment, made ill it few . minutes determined this unquestionably, and no ' experimentntion yet made in the telephone field by any one has resulted in the production of a trans¬ mitter of such uniform excellence as the one then and there made on this principle. The principle of the carbon transmitter is to cause a compression upon the surface of the carbon, the farce effecting this compression being sound waves set in motion 3130 by the voice; this farce is necessarily of a varying degree and or a limited power. The first require¬ ment of the transmitter is, therefore, that Hus weak farce shall produce the maximum compres¬ sion on the carbon, and thus insure maximum vari¬ ation of the resistance, and in consequence the greatest volume of sound in the receiver ; it may be readily demonstrated that with a given force exerted upon a noil-yielding object, a greater com¬ pression is obtained than when the i exerted upon a yielding object another important object in ha non-yielding, it is this: to U . . speech, it is as necessary that the electric wave should be us unbroken and continuous as tlic sounii u wave. If the contact between the platinum anil carbon points or surfaces are allowed to separate for however an Inlliiitessinml period of tinie.the continu¬ ity of the current is broken, the How of the umuit is interrupted, and the sound wave is not repto- duced at the distant end. Now in all fauns o£ ■transmitters having yielding supports, this into ruption takes place whenever the sound waves fa - iug upon the diaphragm attain a farce beyond that far which the spring is particularly adjusted. The practical effect of this is to require that the person / Thei ii Hie instrument shall either so regulate nr 'lliu distance from the diaphragm at speaks, as to eiTeet upon the (linplinigm ite uniform degree of pressure. Failure results inevitably in the separation of the id the consequent failure to transmit llio derangement of the instrument also re- i such separation of contacts by virtue of ml the electric spark resulting from such elVects a deterioration of (lie contact is rendering the instrument less efficient limes wholly inoperative. These results nur in the rigid support arrangement de- dr. Kdisou, and it was precisely hecauso l that Mr. Kdisou abandoned the yielding d adopted the rigid support. Wlnit l the word “abandoned" is simply that lie apply it to the instruments furnished to- instruments of the general character of transmitter, and instrument such as Kdi- liliil Carbon Telephone, wen; presented to •, which would usually be selected or pre- customers? ltlake or similar mirhroplioiiic arrange- lie reason that there is a certain faeiiiation ng at nothing particular, and still having ids transmitted to the distant listener, •re is an aversion against speaking into i ieee, as if speaking into a speaking tube cse are practically the requirements of tin ngenients, the lllake transmit ter has conn iiro popular. The people neither know o themselves as to which is the best for tin icssof the system. Another reason why (hi) come into more general use Ilian Kdisou’ lent is, that by the consolidation of the I w us, the Edison and the llell, the partio the Hlake arrangement obtained control (I Q. If instruments in which the electrodes a I t 1 by springs, such as the so-call iko instrument, wore oflVred to the public in t ne manner as the Edison Carbon Tinnsnutti liuli otie would be the bo l-poses, after thorough test, , in your judgment ! A. The Edison, unquestioi aahly, for the runs nt its margin of adjustment , is so great that a ci I'saliou may be carried to it s conclusion bulwe v two individuals without i regard toanv vanati the strength of their voices; and the cum uu such transmit ter being t io much stronger tn mi the other arrangement, sueli as the ltlake, t iislanrly varying electric! d conditions of t res, as they actually exist i n practice, are alwn ’actively met and overcome. , while with the Bln i.V slight- adverse conditio 11 presents all effect i irrier to conversation. The ; Telephone Exelnii ini it 1ms tuniiinnlcd, and frequently separate fo talking parties ere the ei. mversatum is innsn I I Q Will the tube E, in 1 the Bell patent ISti.i it in a similar manner to the tube in Kdisc xbibit A i Same objeetioii : is to Iat. 2. Same answer. A. In a similar manner; tl lie diameter of the ti the only difference. , , , t - till) statements made by Mr. Bell tlmt islrnmeiits could he used us transmitters l'ouitsns now arranged; Tor the reason mo not capable of creating a current ot length to overcome the adverse condi- umly existing on these circuits; such, ice, as the inductive effects derived coutt elegraphic and other circuits. It ins fact that the early attempt ot Bell to lis magneto telephone for exclmiice pur¬ ge cities, as well as all subsequent ot¬ her parties to do the same thing, have ml failures. No success approaching a lianictcr was made until the carbon trans- re adopted. ers of the Edison carbon instruments rst to make a practical and commercial telephonic exchange, and their success the owners of the Bell magneto device to t for and ultimately bring into use a car- one transmitter, vis : The so-called Blake nt. From that time their efforts to es- dianges have been crowned with success, experience lias been had by curtain rties who modified the magneto a ppa ra¬ il way as to render it much more effective lismitter than Bells, and who made airy efforts to introduce it in the Oity of in England. In the City of Paris, owing irticulnrly favorable conditions existing iiodicum of success was obtained. Else- i thing was a conspicuous failue. The instruments create and transmit to flic line currents by the motive power of the voice [ion the diaphragm, and are necessarily i the effectiveness ot such power, rboii transmitters simply control currents e generated in a battery in the ordinary and by a variation of the conductivity of s , in one of exceedingly lug! ngtli very much in excess o Is. Tile proof of the superb f of the battery currents, is l , that they are in universal y rare to lind a magneto use reut generator or traiismitt orious to-day to all users of a the carbon transmit ter is In conversation at all time stiflii lieient denial of Mr. Bell’s -nolo could be used on tl st. A magneto iustriiuu -etizeil, is very much in lie fact that the steel eonipo; gnet is necessarily surehago ich surplus is not unlike a lor, as when its edges have l« ter raised above their level, a el will cause the extra iiingne ape precisely as a similar aid discharge the surplus e I it is apparent that when sm a transmitter and is eunstan ilccuhtr disturbance produce" nation ot the diaphragm uml the voice, an effect precisely ; the magnet with a hanini iult being a very decided los; onsequent loss of effect iveue itor or transmitter. This is j fact that magneto tint much better results than a li a. The statement that “ If i inenls now in use as receivers from the circuits where they the whole telephonic to . . vinnco witli the rafts, that l fail to underslnm ,w it could have been made. In point of fact, all at would be required in case of such removal, ould lie to substitute the motogrnph receiver ol r. Edison. The proof of their efficacy as «w»i* ■s lies in the fact that a compiiny was formed in lighted for the introduction and pmetical use ol ist such an arrangement as this substitution would lake, and many hundred of these instrument, ere practically operated, and in such an ellicion nd satisfactory manner as to constitute the ex images using them, the most effective of any a et in operation in England, or as rams I know it ins country, and were 1 in position to make use o hem, with Mr. Edison’s Carbon Transmitter, I d lot hesitate to say that 1 coaid speedily create oinpetitor to the present system, wliieli would i i very brief time outgrow in proportions and in el iciency flint which Mr. Bell tesliiies would becom Unorganized, if the magneto was removed, and i loing so I would not use a single magneto receive Mr. Bull must be aware .of these facts, as in tli Pooling of the Edison and the Bell Companies, i England, his associates gave to the Edison Co which did not use a magneto, £115,000. -A considc ation of tins character would hardly be paid a “disorganized” and inoperative competitor. Adjourned to Thursday, April 2S, 1881, at o’clock, a. M. 14 Q. Is nny such dilliculty likely to arise in t Edison Curboii Telephone, ir not, why not t Same object ion ns lo Int. 2. Same niiswor. A. No. For I ln.‘ reason that the electrodes him separate, tlmro ran therefore lii- no spark to to this oxide, hesiiles wliiidi the snrfaees in rout an? so much larger, that oven in case or inipro] adjustment, permittiiij' of a separation oT t he el trades, Ihoro would not lie sulliemnl etroctat any < point: lo proditee an oxide. la Q. Referring to the various telephones t have been made by Air. Edison, front time to tii commencing with his use of plumbago njn.ii an stone, anti going through the various instruine employed by him in which the electrodes have b carried by springs, and springs have been appl between the diaphragm and the carbon, si whether or not the carbon itself has performed same duty in connection with the electric cirt from the first to the last '! Objected to by counsel for Mr. liell not relating to matter competeli Rebuttal. Counsel for Edison replies Ilia I- tin la live merits of the dilVercut ins meats could not he shown until character of each had been showi the direct evidence: neither conk differences in the modes of opera be pointed out. A. Precisely the same, the principle upon w actirhon telephone operates has not changed, sit •fold effect is j»ro- tntioli of the power 5 is lost, and tlio I. magnet of 50 is if coal rary polarity ■lii-ngm salijccl to decided react ioi f tlie current in : rising from z direction, with the e continuity of the eel of this break in diaphragm of the nil, for the reason •-incident with the rarifaetion in the rrefore mutilate the e receiving iiislrn- it entire, or by the or false vibration, we therefore have eiving diaphragm KDWAKD 11. JOHNSON. Adjourned subject to the witness be¬ ing recalled [or cross-examination by counsel for Bell. GKO. T- riNGlvNKY, Ol'l'tcr. OF h. W. SKKltKLI., 140 Nassau St., New York, N. Y. Wed., April 27, 1881. 3. Ivixcu, being duly sworn deposes and answer to interogatories proposed bv li, \Y. Esq., as follows : Please state your name, age, residence and l ion 2 [y is Ira S. Kiacli ; 1 reside at Albany} ,,rk; occupation, Telegraph Suiierintenilent, •s of age. State about bow long you have been in that 'wo years for the New York Central K. 11. Co. In what business were you engaged in be. 'elegrapli operator and oliice inspector. What, if anything, have you lmd to do with ones, and where ! [ was superintendent of the Commercial Tele- Company of Albany from .lane, 1879, until ary, iSS<>.' What instruments were used by the Cone il Telephone Company while you noted as its lit cadent 2 >(i x-Q. Wlicn did yon lii-st li*ll Mr. Hughes Hint ii hiiil this alleged conversation '( V. 1 did not. toll Mi'. Hughes niiytliinjf about il. >7 x-Q. WIiimi iliil you lirsl loll anybody OkI-II'K III' L. W. SKItliBI.1.. I [) Kassil i ■ street. Sew York, N. Y„ } Thursday, April SS, 1881. } IV Huoiies, being duly sivorn, depose: answer to interrogatories proposed In 1, Esq., eonnsel for Mr. Edison, as fol- A. Charles T. Hughes, 31 years of age; lesi lunee, Sew York, N. Y‘. ; oeuupation, purehasinj igent for T. A. Edison. 2 Q. Have you made any experiments to tes vhcther or not. the instruments, Edison’s Exhibit V anil A', are eii|)able of praclieal operation, am T so. what did you dot A. On the night of March Sfitli, 1881, with Marti Force I tested the instruments, Edison’s Ex. A an A ', and found them elliciont both as trunsmittci i nd receivers. I placed them on a metallic oircu a battery between, and talked into ono with e listening to the other, and then listened while e talked from the other end. This took place o laboratory at Menlo Park, from the extreme . end up stairs, to the extreme rear end down ^ in thu chemical laboratory, with two doors il between. We could hear talking quite plain- lso, called Francis .lelil, who both talked and led. I heard him, and he me. I tried the in- limit, exhibit A1, as a receiver in connection a carbon transmitter and got. talking perfectly Have you ascertained whether or not the on Carbon telephone, corresponding to “Wiley’s bit, Edison’s Carbon Telephone No. 10,” oi ■seott’s exhibits, Edison’s Carbon Transmit No. S and 10, are capable of use at the present ! and if so, state what was done ! r have, on April SO, 1881, with Martin Force tell three telephones corresponding to lliesi bits, between the laboratory and the ollicc at In Park, without induction coils, and with gneto receiver, and found them to be efficient ting instruments. 3. Please state what character of carbon was e use of in those instruments? 1 have the instruments here present, and ii two Nos., 13 and St), silk lliilf, with plmnlwgc ied into it, and in instrument No. OS was placed, no's of silk cloth rubbed with plumbago. T e was any difference in them it was linn'll j L'cnblc. They worked satisfactorily as trims : of the hibomtoi been disturbed sii n’t know for how q i„ these tests of the Kdison ami so-called * instruments over long linos, as spoken ahout, on discover any difference in the operations of wo instruments ? ]„ using the Blake transmitter between Ecu : :„ul Kli/Jibelh, I could only use it under the ; favorable circumstances ; ir there were any ction of any kind I could i s the induct ■'extent. Thu articulation in the Kdison ii nenl was always good, no matter how loud yt ied into it. In the trial between Elizabeth ai ton. 1 could not use the Blake at all. Q. Do you discover any dilliciiltios arising Edison instrument in connection with the to .°None whatever. I myself would not use an; lament but the Edison as long as I can gi m. With the Edison instrument you can eithi . j()W 01. i(n,d. My subscribers have the pnvi ■ of talking over the Metropolitan Distrii ougl, niv office, and in many cases daily Hill v lnve trouble in distinguishing wlmt is said li parties they call for on the Blake transmittc .,nses from the parties who use them w king in the same tone of voice, or in the to, ,t the instrument is adjusted for. I’arlies m tl ,t ropolitnn circuit have no trouble in hearing n iscribers, who all use the Edison insliumci 3 have no trouble in communicating with su •ibers in the Metropolitan District, we using t lison transmitter, if there is no trouble with t io itself. . ). W. ODIORNE. L>r for your own exchange, nnil thou, ns nil ill ivo, express your willingness In relnin mill klistm’s! A. I niiulu n liiueli lower proposition to the ulephiines, in wliieli I think l stilted I lmt I like file UlnUo tiiinsmitter.nnil Hull receive iiount myself, or would retnin the present i nenls t lint I huil. 'Mi-reel : By L. W. Sen-ell, Esq., Counsel fi ■lilison. 10 It. I). Q. In Iho proposition to the Meti nn Co., wns nny thing siud about the Edison i nunt, or nny preference for Hint over the Bln itrumcnt! 20 It.-IJ. Q. Did you, in your proposition, my provision for the removal of the Edison mints! uml why did you make tin: propnsi lake the lllnke instruments! A. There was no provision iniido for the n if the Edison instruments : my only reason, proposition to use the lilalie i list rumen I. reduce my rental one-third, and I anticipate! if they accepted my proposition, they would Metropolitan Com puny more royalty, and 1 perhaps, get the Blake upon the terms of my sition, which would answer my district, us do: is being within it radius of one half mile. 21 It. x-Q. Do you seriously mean to swei the Edison instruments cost the Metropolit more royalty than the Blake ! A. T do not ; in my last answer I meant to say, 1219 if l did not, that I was under that impression ; I do not know what royalty they pay for oithor. D. W. ODIOltXH. Statu ok New Yoiik, 1 u . County of New \ork. I I, George T. Pinckney, a notary public within and for the Comity of Kings, (certificate hied in New York County!, and State of Now York, do hereby certify that the foregoing depositions of Edward U. .Johnson, Ira S. Kincli, David W. Odiorne, and Charles T. Hughes, were taken on behalf of rhomas A Edison on rebuttal, in pursuance of the uot.„eB hereto annexed, before me, at 140 Nassau street in the City of New York, in said county, on the 2Ttu, 122 28th and 20th days of April, 1881. That each of said witnesses were by me duty sworn before the commencement of his testimony ; that the testimony of each of said witnesses was written out by myself; that the opposing pait.es E Gray, A. G. Bell, G. B. Richmond, AV . L Voelkers, .T. H. Irwin, and Francis Blake, jr., were present by counsel (but that J. AV. McDonough and A. E. Dolbear did not attend, either personally or bv counsel) during the taking of said testimony. That said testimony was commenced at eleven o’clock a m. on the 27th day of April, 1881, and was continued pursuant to adjournment, and con¬ cluded on the 29th day of April, 18S1 ; that I am ^ not connected by blood or marriage with either of said parties, nor interested, directly or indirectly , in the matter in controversy. In testimony whereof I have hereunto set my hand and affixed my seal of Tskai 1 office, at New York City, in said [ 3 county, this 30th day of April, A. D. 1881. GEO. T, PINCKNEY, EDISON'S RECORD. VOL. 2. I VI) EX. noil April 27, 1877, " .1 iil.v 20, 1S77, “ Soji. «, 1877, “ Due. 13, 1877, " Dee. 2*1, 1S77, No. 130 . “ 111 . K “ 111 . *>( “ M5 . 2( “ «8 . 81 Edison s drawings from folio 1), made liehveen Nov. in amt Dec. 20, lS7f>. “ " ll'* " “ .Inly 0 mul Oct. 12, 1S70.. * “ “ “ II, “ u , lun. 20 and June 20, 1877. “ “ “ 12, “ “ July 1 anil Sop. 30, 1877. . “ “ “ “ 18, *‘ “ Out. 2 and Dec. 29, 1877. . . “ “ “ “ 14, marked 109—1*1 . “ “ “ “ 15. on which no dates were placed . Drawings made by Mr. Iidiwn while testifying, viz. : Edison's Illustration Diaphragm and Rubber Tube Dampener . olio Exhibit Edison’s Spring lingers, August, 1877 . f,0i Edison’s Exhibit Magnetic Motogmph Telephone . 50° Edison’s Exhibit, 01— 13 additional . ' ' 5U3 Cover for Exhibits . . . . . . . . . . . . . . . . Journal of the Telegraph, April 1(5, 1878 . . . fiOO Order for Caso No. 130 . . . . . t' ' \ ’ jqs Translation by \V. U. Translator of Iteiss Telephone (drawing atid text) COO Acoustic Telegraph (2 shouts . . . . . 510 and fill Depolarization of Batteries . r.io Cup anil Curium, 112-1 " Musical Telephone, Sept.. IS77 . " _ . Exhibit I nsi in men 1 ll-ll, p,.|,. 17, 187?!.*!'.*.* . I^i'we l)iaplnnKm> Sept., 1877 . !; " Telephone Relay, fiS-l 1 . .!!.!.! . ,! “ Three Spring Electrodes, Oel., IS77. .. . “ liistrninenl 130-11 . . !! “ “ 20-13, Oel. 17, is7?!!!! !! . “ I)inphi-.igiu 17-111 . . ICJi-12 . . . Instrument 33-1;} . 4 'it- l:i, .\'ov. r,, 1877 . •Arth'iilathi" Transmitter, On , IS77 Weighted Klectroiles . . " “ Instrument Iu2-i:t . . „ !! “ 113-13, Nov. 10. |g77 . !.!!!. ., ,, “ 121-18, Nov. SO, 1877 . .. l4 “ 1 17-18, Nov. 10, IS77 . o . " MM3, Nov. 2(1, 1877 . „ I^»c(J",|iltiuK„i ,„„i spring . . . . " “ Mica Diaph'tiain.. . . Mumiy s Kxhn.it K,liSon,s Fluir Holder!!!!!.' . ‘ Ren I ley h Exhibit Kdis.m'.s Carbon Telephone No.' i ! ! ! ! ! !.' \ " o .. “ " No. S, Mull, 2d, 1878.. I .. „ „ | “ No. 3 . , Wiley’s Exhibit Edison’s Carbon Telephone Sal J.* ! ! ! ! ! ! * j Prescott's Exhibit aiirnSZteBct^VniliVi. . [ Edison’s Exhibit Carbon TeS^"’ Tnnmlttw 8 »» . « ’•‘Ellison's Pressure! lielny,” Journal of t ln.> Toll f’ji, page Kill; Srinntilie Amoririiii .Siipploniont, A 'Telephonic Invomions— Description of the Invci tiny mill Edison, ’’ in Philadelphia Press ,lnlv 1), f I III! Telegraph, Now Void;, ,| uly 10, 1877, ...... . Tim Edison Telephone,” in die Siindnv Trnjmi, Tn opt. 2, 18*7 . " Tin1 Telephone Coneori,” in the Chesier ( I’ennsi i|T .V«»:s, Sept. 28. 1877 . " Programum of Cirnnd Exhibition of Edison's Telo| S77, a! die Tabernacle, Jersey Oil v . Tesdn- die Telephone,” in' die' Diiily Gmjilde’ ' tieinns llefore Seienee,” in die Washington Po> pi. Ill, 1878 . The Telegraphic .lournnl,” .Inn. 1, ISi's.'piigol \endemy of Seienee,” in New York Daily Tril Telegrnph mid Telephone,” “in 'die ilniiv’ Grnpl oS . „ . ' 1 Scribner’s Monthly ” for April', 1878. pn-es Sril'l i’hilndelphin Inquirer,” account of Entertainment Music, Aid. 10, 1878 . nininent nt Tweddle Hull. Sep. 0, IS77. . . . . . d Franklin Institute, pages 200 (0 20!). ..... ... one Hand Hook. DEPARTMENT OF THE INTERIOR. ’ UNITED STATUS PATENT OFFICE. To ill I’lIIISONH TO WHOM TIIHSK PlIKSKSTS HIIU.I, COMB, OllKCTINO: Tills to certify that the annexed is a true copy from tho tiles of this ollico of tho tile wrapper and conlonts. in tho matter of the application of Thomas A. Edison, ass’or to Western Union Tele¬ graph Company, tiled April 27, 1877 , for speaking telegraphs. In testimony whereof, I, W. II. Doolittle, acting commis¬ sioner of patents, havo caused tho seal of tho Patent Ollico [kk.u.] to bo hereunto allixcd this twenty-ninth day of December, in tho year of our Lord ono thousand eight hundred and seventy-nine, and of tho independence of tho United States the one hundred and fourth. W. II. DOOLITTLE, Acting Commissioner. To tiik Ilo.xoit.uii.K Commission Kit of Patents: Your petitioner, Thomas A. Edison, of Menlo Park, in tho county of Middlesex, nml Slate of New Jersey, prays that letters patent may he granted to the Western Union Telegraph Company of tho city and State of New York, as his assignee for die invention of an improvement in speaking telegraphs (ease No. 130), set forth in tho annexed spucilicntion. And further prays that you will recognize Lemuel W. Sorrell, of tho city of New York, N. Y'., as his attorney, with full power of substitution and revocation, to prosccutu this application, to make alterations anil amendments therein, to receive the patent, and to transact all business in the Patent Ollico connected therewith. TTIOS. A. EDISON. Nkw yuan, N. V., April IS, 18". UNITED STATES OK AMERICA. Citv, Cou.vrv AND State of New Yoiik, ss. On this eighteenth day of April, in tho year one thousand oight Imndrud and seventy-seven, hoforo tho subscriber, a notary public Ill Hint liu verily believes himself |» ir of Hie 'villiin described improve, il Hint lie does not know nnil docs ver before known or lined. ..ml that yim' '"l(l " resident of Muni,, |*.,r|C- THUS. A. KDISO.V I year nliove wriilen. CIko. T. I'i.vcknkv, jYolary Public, A-_ of Menlo Park, i„ of Xi'U- Jersey, Imve invented an l,lH> °r 'vliiclt the .following h ., J 10 °l,ora,« »*v sound, and the i employed (o open and close mi '•Is or I indies following the law ' "f’ ,lu! »«"•« . . . Io eliaii'OM 1,1 telegraphs dial ;,iv in- r,l'f* tllm' ii <1 dillieiiltv uiisin- uttered in one key or' tone or sliuct and clear. ""lu "8 " Phonetic ' or rpeukiwj "ismit spoken Words regardless t,n " l,f 1,10 •rnnsmitting iustru- r die receiving instriinient, the V,"» 10 'Himtmto the telegraph dies or boxes A H, r L tl U 1,10 0,10 ''Ho which the words are uttered, and tho box Is or resonator is tho responding part to which the attemlmit listens. (i. Tho diaphragms c tl, are applied at (ho side or end of tho respective boxes, and these should bo provided with clamping rings cf, and lightening screws <j, somewhat on tho plan of a kettlu drum, so that the diaphragms may bo of tho proper tension. I prefer and generally use sheet metal for these diaphragms, which* may bo of a suitable thickness, say ouo eighth of an inch more or less accord¬ ing to tho size of the instrument. 7. In front of the diaphragm c. ol the transmitter I make uso of a second plate, or a disk n, of suitable material having a con¬ ducting surface. 8. I have found that a disk of hard rubber coated with plumbago, answers well, but a disk ol some conducting mulal or substance may be employed, or a plate of metal coated with somo scmi-con- diicling substance may be used. 9. The circuit wires .‘t, and <1, from tho line and a battery or other source of electricity are connected to this apparatus, either at opposite sides of tho disk n, or one wire may be connected to said disk n, and the other to tho diaphragm c. 10. At the receiving instrument llioro is an oleclro-magnet o, with its poles facing the diaphragm tl, and the armature r, is fas¬ tened to said diaphragm, or the diaphragm itself may form the 11. Tho disk or plate is accurately adjusted to tho proper prox¬ imity to the surface of tho diaphragm so that in a stato of rest there will be little or no current passing from tho battery upon tho line, but tho vibrations that aro received by the diaphragm c, from the voice cause the electric energy on tho line to increase and decrease according to thu intimacy of contact between tho vibrat¬ ing diaphragm and the surface of the adjacent disk, for if the elect rio conductors arc connected to tho diaphragm and disk respectively, thu current that passes will bo pulsated and raised or lowured by thu intimacy ot contact of thu surfaces or by thu vanahlo resistance where tho conductors aro m contact with a surface of plumbago, or other poor conductors of electricity, tho current lioing increased by thu diaphragm allbrding less resistance than tho plumbago, when the EDISON’S CASE “ 130.’ vibration of tho diaphragm brings tlio surfaces into conlnct to a great or or loss extent.3 1-f Uy this phonetic or speaking tclcgrapli the diaphragm at tlio receiving station will bo influenced by thu action of tho oloctro- inngnot in the same proportion ns tlio rise and fall of electric energy produced by the vibrations of tlio voice, regardless of tlio musical key, and tlio utterances at one end are reproduced at the oilier with great clearness and accuracy. M. I ho electro-magnet or helix f, introduced in tho branch 10, between tho main line mid tho earth is adjusted by a rheostat or otbeiwiso to neutralize the static charge and discharge in the line [for by responding to the rise and fall of tension its action is the reverse of tho static charges and discharges of thu lino5] as hereto¬ fore employed by mo in chemical and other telegraphs, and hence any falso vibration from the cllect of static charge or discharge arc lirevented. "A."4 here IdmtUmI Is ... .... Instances the .lla|.hracni cumins Into contact with the iltslt, to a ercstcr or less extent ncconllng to (lie ninplltmlc of Its Hhratl.ni, lessens or Increases Die distance that the electric current Is ohllKc, I to travel over the surface of the .!■ - of plumbago or .similar Inferior cnmlucilnif ... * • * eicciric current \n obliged I of phmihnzo or Similar Inferior conduction material, ami ^n.^DMhe'rJ V... r fl,n ,,r 'tectrlc tension." See letter of Oct. 30 0. I - wordM In brackets have been erased. See letter of June *„»l. !b?7 u i> " “A here Inserted Is ns follovva:— • l‘TtlmUlCchaS^U|oft|,l'L’ |'‘“ ll‘"C “ "UU' «'»««”"#• an.l m-ulrallse” I r ■» l>'« •"■-•re Is no proloneatlon of tho Flt.E-WltAl’l’KU AND CONTENTS. Firat. A telespocnn 8 consisting of a receiving diaphragm t.poi iitod by an oloct'ro-magnot, and it transmitting disk or plate, anil diaphragm that is vibrated by tho voicu and produces rieo and fa of electric lonsitin on tho lino in proportion to tho extent of motio of the diaphragm, substantially as sot forth. [iS'ctow/.7 The combination with tho main lino and tho tclcspocn transmitting and receiving instrument, of an electro magnet or eo in a branch or shunt circuit, subslanlially as set forth.] Second.11 A diaphragm and its supporting caso or box adapted l being viliratcd by tho voice, in combination with a disk or conta plate and electric circuit, substantially as sot forth. Signed by mo this eighteenth day of April, A. D. 1877. TIIOS. A. EDISON. Witnesses : Cl no. T. Pinoknkv, J I AHOLD SKItltKU.. Nmv Yoke. Feb. M, 1878. IIosoiiaiilr Commission Kit op Patents : Sir, — In tho matter of my application for a patent on Sponkii Telegraphs, caso 180, tiled April 27, 1877, 1 heroby insert the ft lowing before the claims. [I tlo not herein make any claim to tho iron or steel diaphrag combined with the electro-magnet and resonant case, but reserve t same for a subsequent separate application.] TIIOS. A. EDISON, per L. W. SKltliKl.L, Attorne INTERFERENCE A. DEPARTMENT OP TUB INTERIOR. UNITED STATES PATENT OFFICE. Washington, 1). C’., Mnrcli 2ti, 1878. nos. A. Edison, Also copy to Core L. W. SKiiHKl.r., Western Union Telegraph Co. Hox 4,089, New Voiiic Citv. N. y. City. Plenso find below n copy of ft coimminicntion from th0 Kxnminer cr ,g ) nr ..pplication for patent for speaking telegraph (Oise 30) tiled Apr. 27, 1877. Very respectfully , ELLIS SPEAR, Commissioner of Patents. l onr cnso aliove referred to is ndjudged to interfere with tlio I>l>lie«tn,ns and patents named below, and the <p, cat ion „f priority ' * (|ULn,""L>'1 1,1 u,l,r,,r"iity "''••• •bo rules accuuipniiviiig this. 1 } b‘ 'L 1 t 1 1 1 I '• II le 53. most 'he sealed an. bled on or holme the sixth day of May, 1878, with the I T""?n ,,m, of 1-rtjr tiling it. indorsed on .... . ' "!’C: 1 1,0 “'''tier involved in the interference is,— ■eheremhefoto described art of transmitting and reproducing at ,;!,2 1 * 6:,lmr,,,1r - visions Of any description which increasing and decreasing the strength or an electric 'intuit I|"lV0.r*l"g " *,,cl' 11 "m,'"cr as to produce in said series ol elcetrical waves or vibrations precisely corre- liTso'noro'u ' ,t!,r i"ler™h of «••<! relative amplitudes to tat ion or MaZ!” so l lia t ' m V* #t lhu aiions, so that oral conversations, or sounds of nov !“2“ '» tn.n«mitloJ - ,0„^ we, «*». . . PaUTIKS TO IXTEItFEItKNOE. Elisha Gray, npp’n tiled Oct. 21), 1877 (No. 1,) attorneys of record, Baldwin, Hopkins and Peyton, Washington, D. C. Emile Berliner, npp’n tiled Juno 4, 1877. Attorney of record, James L. Norris, Washington, I). C. Georye JJ. Jlichmond, npp’n tiled Aug. 2-1, 1877. Attorney of record, George W. Dyer, Washington, D. C. A. E. IJolbenr, npp’n tiled Oct. 31, 1877 (A.) Attorneys of record, Frnnk 1.. Pope, Elizabeth, N. J., James L. Norris (Asso. Att’y), Washington, D. C. A. G. Bolcombe, npp’n tiled Jan. 28, 1878. Attorney of record, Moses G. Farmer, Torpedo Station, Newport, It. I. A. G. Bell, Patent No. 171,405 dated March 7, 1870. Attorney of record, A. Pollok, Washington. D. C. 11. C. TOWNSEND, Examiner. Room No. 118.- [No. 14.] [Isteufeiibnck.] INTERFERENCE B. (Case 130.) DEPARTMENT OK TIIE INTERIOR. UNITED STATES PATENT OFFICE. Washington, D. C., March 2fi, 1878. T. A. Edison, Also copy to Care L. W. SKltUELt., The W. U. Telegraph Co., Box 18(59, N. Y. City. N. V. City. Plenso find below a copy of a communication from tlio examiner, concerning your application filed April 27, 1877. Speaking telegraph. Very respectfully, ELLIS SPEAK, Commissioner of Patents. Your enso above roferrod to is adjudged to interfere with tlio applications and patent named below, and tlio question of priority kdison’s cask “ iso.’ will lie dilct mined in conformity with tlio rules accompanying this. ’I'lm preliminary stntoinnnl demanded i>y Iinlo S3 must lie scaled up and filed on or liefore the sixth day of May, 1878, with the subject of the invention and naino of parly filing it indorsed on the unvelopu. i he suhjeet matter involved in the interference is the hereinheforo described improvement in the nr) of transmitting vocal sounds or spoken words telegraphically, which consists in throwing upon the line through the medium of a varying resistance eleelrie impulses corresponding to the vibrations f liaphrag perated by the movements of the air produced by a spoken word. (Gray's second claim.) 'Hus is substantially covered in Hell's fourth claim, and is described in applications of Gray, Herliner and Richmond. The parties to interference are Elisha Gray, application filed Oct. “ ’ , Attorneys, Ilaldwin, Hopkins and Peyton, Washington, , C. i. A. Edison, application tiled April 27, 1877 (Case 130) Attorney, h. W. Sorrell, Hex 4.180, New York City. Emile iler- 1'T . . . 1 1 "L * 1877. Attorney, James h. Nonis, as nngton D. C. George H. Richmond, application tiled Ang. Attorney, George W. Dyer, Wasl.ington, D. C. A. G , fment No. 1 74,485, dated March 7, 1870. Attorney, A. lollok, Washington, D. C. If. C. TOWNSEND, Nkw Yoiik, April 2G, 1877. Ilex. CoM.MI8.StO.VKIt or Patents : • foos 0,1 “,0 “w,,lc"ti0',» for Thomas A. Edison, speaking telegraphs, m Owen Tomlinson, car axle boxes (reissue), ;i0 Respectfully yours, ^ ft LEMUEL W. SISRHELL, M- per C. II. Smith. DE-WRAPPER AND CONTENTS. DEPARTMENT OF TI1F. INTF.ItlOIt. UNITED STATES PATENT OFFICE. Room No. 118. _ Wasiiinoton, D. C., Juno 20, 1877. Titos. A. Edison, Cnso 130. Caro L. W. Seuiiei.i., Hos 4(18S), New Y'oiik Citv. 81’EAKtNO TKt.KOIlAl'It, FII.KD Al'ltIT. 57, 1877. This application lias been examined. The second claim appears to cover a mere double uso of an electro-magnet 'or coil, as ordi¬ narily employed m telegraphs, and as shown for example, in patents of .1. 11. Stearns, Mar. 18, lt>73, No. 18(1,873 (Elec. Duplex Tele-' graphs), and T. A. Edison, Eel). 10, 1874, No. 1 17,313 (Automatic Telegraphs). The meaning of the statement in paragraph thirteen of specification, that tliu action of the coil is the reverse of t lie static charges and discharges of the lino as heretofore employed by mu in chemical and other telegraphs, is not clear. The sigiiilicntioa of the word " telespeean ” employed in claims 1 and 2 is not understood and the propriety of using it cannot lio As presented the application is rejected. . H. C. TOWNSEND, AVr. New Yoke, Juno 21, 1877. To IIoxoiiam.k Commissioner ok Patents: Sir, — In the matter of my application for Letters Patent oa Improvement in Speaking Telegraphs (cnso No. -130), filed April 27, 1877, 1 amend the specification by erasing the word "phonetic" in second lino of paragraph 3, and substituting llio word "tolespo- Hy erasing in llio middle of paragraph 13, the words " for by responding to the riso and fall of tonsion, its notion is tho revorso of the static charges and discharges of the line." Hy insorting llio following at tho ond of paragraph 13, FILE-WRA1>FE1 CONTENTS. of thin " sliimt” (o any system of telegraphy without any distinc¬ tively now result is held not to constitute invention. The second claim is accordingly refused. II. C. TOWNSEND, Examiner. Nkw Youk, Sept. 21, 1877. To I Ion. Comsiissioneu ok Patents: Sir, — In the matter of my speaking telegraph, case 130, tded April 27, 1877, I amend the specification by erasing tho second claim without prejudico in case of future reissue. TIIOS. A. EDISON, per L. W. Sebkkix, Ally. Boom No. 118. DEPARTMENT OE THE INTERIOR. • UNITED STATES PATENT OFFICE. Case 130. Washington, D. C., Sept. 29, 1877. Thos. A. Edison, Caro L. W. Skuheu., N. Y. Citv. On tho sulijcct-matter of tho combination of the framo, tho dia¬ phragm and the tightening screws, an interference between this and another pending application will lie necessary. This interference will ho declared ns soon as the conihcling appli¬ cation is put into proper condition. ^ Q T0WNSEND, Examiner. Unit in kettle drum* mnl banjos Hie diaphragm j* pr >v» for lightening the same. I do not chum in „ •eat the comhinnlinn with the diaphragm of a rim- ws for adjusting the parts.] THOMAS A. EDISON. Xkw Yoiik, Oct. 30, 1877. IIISMOXKIt OK Patents: e matter of my «|.plieati„n for a patent on Speak i 0 13°* 'ded April 27, 1877, I amend t ' lidding after paragraph II, an follows : _ l*C°“ ,l'“ . . r,,t?m coming into contact with the di. . . CSt,c"1' '"-'cording to the amplitude of its vih, increases the dislaneo that the electric current cl over the surface of the disk of plumbago „r simil t r I|ll"e' <lm* toll!i, ,lUL'"lly the resistance in t ml fall of electric tension.] THOMAS A. EDISON, per L. W. SKititKl.1., A norm Wasiiixoton, D. C., I,S7 diaphragm vihrni or the rise and (all i»f i,... : i • . : extent of contact bc,,« <,ro<h,<; 1877- No. 1 ’JitojiAs A. Edison, <» H olrrn Unlm Ttlojn afh Cbmpany „/ Xm Tori V K >rk* C°,mti- “^'iddlesex. Stale of New Jersey. FII.E-WItAPrEIl AND CONTENTS. Vpril 27, 1877. Lemuel \V. SbuhkUm Jiox 41189, New York City. 1877. ’ CONTKNTS. Application Capers. 1 Kej .lime 20, 1877. 2 Aiml’t "A H” June 22, ’77. 3 Kej Sept. 20, 1877. •I Auul't Sept. 27, 1877. S Kej Heller Sept. 29, 1877. ti Amd't Oct. 15, 1877 " C.” 7 “ “ 31, •« "IV* 8 “ Fell, lti, 1878 " E.” A. 9 1 nt f X Va*. ii. W- i!s. Vff. JsV. Mllr- 2,;. 1878. II. 10 lutf X V/* l J » W. W • Mnr- 26> 1878‘ 11 12 13 14 15 It; 30 Electricity. 1 7 Telephonic-Telegraphs 18 Title. Improvement in 1 Cash $15, Add’l Fee Cert. •• “ Cash. Examined. Issue. 2 Patented PAGE 13. 77.Ji!.I!£fifi0S2J 7^77*2/772/. Fz'/fd-Jfyir. 27; 73 M >ox. Hum the mocha uical forco applied to movo I "rfi,co ,,cl!< eleclrie current to produce the vih ••sonant clmiiiliui*. The principle of this method of obtaining motion by el a I ^'•composition is described in my Letters Patent I minted dan. Ill, ItiTli. To facilitate the discharge of electricity from the recei' ns it may lie shniitcd with an electro-magnet. l’ig. -I shows the devices which may he employed I r|ii" c 11 noiseless manner, so ns to prevent intorfuroi •eak, hissing consonants which form a part id' ordinal p is a worm and o the wheel for revolving the roller e. t ersal joint connecting to the shaft s, the object of the she > carry the actuating handle to the right side of the mncl ie paper-carrying devices to the left-hand side, v is a sprin ■rves to press the rnliher wheel ic against tho under snrfaci heel ii. which also may lie covered with rnliher. uJ is the which to rotate the .li-k 11, shaft s. worm /i, and roller e. I lie mouth of the ape ikiiig-tuhe may lie closed, except a hoi nt through which the vibrations of the voice pass to (ho din tyiupnu, the object of thu slot being to increase the poivel •sing consonants; also that the point b may he dispensed ry short lines. I claim ns my invention, — i imt. In a telegraphic apparatus operated by sound, thu lion with the diaphragm or lympan of two contact point* ctro-circuil adjacent to thu opposite surfaces, substantial!) III. •Second. Tho combination with a diaphragm in a tolograpl d by sound of two contact points at opposite sides of tl THOMAS A. EDISON, OK MENLO PAIHC, N. ,T. Auor. to Wttlrrn Union Telcjraph Conywny, of Xea York, X. V. [.S/in-i/foi/ion un amended and corrected .•] I whom it may concern : il known tlmt I, Thomas A. Edison, of Menlo Park, in tho of Now Jersey, have invented an improvement in Speaking rnphs, of which the following is a speeilicatiun. i object of this invention is to transmit and rondor audihlo tho i voice over telegniphic circuits. i invention consists in n tympan or diaphragm upon a speaking connected with electrodes in an electrolytic fluid, so that tho ions of the diaphragm cause tho electrodes to approach and i from each other, and vary tho resistance in tho electrio invention further consists in tho method of multiplying tho of tho approaching and receding of tho electrodes by causing front to pass through tho electrolytic liquid at several places ■n tho points which are vibrated by tho tyuipan. >. invention further relates to tho electrodes insulated except at xtremo ends. invention further consists in a case, containing an elcctro- L with a loosu plate at tho end, which pinto is placed against o«i“h, tf'in , U'.8l,",,e'1 ''“'rmle* «r« two . . . . «•» * ™n H is divided liy an , . «;«.lly.l,Uro„re,WOclu,:lni|y”o culls, . . . . . . II Ilow Gviilnin II r' c olleh' each other. ■" -ry Cose £ '"1 '« H>c screw/, thooc thromd, it ",0 lm,,M ' <he Huh) i„ |i ,| . ° 1,10 extreme point, tli «,frs„|l,liH|1811n;iise^ ,K*“ '*"■'•>1 am faces, espeei points to end ’* 'ho approach and rei ■^• r.eaoreateror 17 ""d causes the , 'ric current iIlt„ Wl„ ! ,,f "><’ "m<l. thus throw "«»*■' : '.•-ia«.w,;:;,r:7,,,,:,i"“ i" ii,,! . . . » Wovenient of the diaul "mildo the elf 1(1 ai'arlcn an,| . . ” .f "»c-him.lredth of «i">«wo tli'ctrodcs thn i° ^"l; e°"d,,cl ,r to that exte, 1" practice, 1 l>ri.r’r ,() 1 1,81,1 of ",0 "aid conductor ■» 'lie current uS™**1 "r 0,uu"0'^ |'"s of electrodes (■■■ ■- fclll;L','ssively holweeu t "i')- M’hore a great uum'l r""0 w»miectcd i s">ace of ,h„ electrolytic fluid J 17 7°‘ . Uy """S « rotuparative).. 1 Coll!* U Kro« “ r '8 ofiro». Prorerahly tinlled -"i ?",luu,i"» ""''"imi. • a w at the end of th o waves thus sunt over tho circuit cause tlio oloclro- magnet i Intel the plate r at each vibration, mid thus roproduco am r audible the voice of tho person speaking into the tulie a. <i advantage of using a loose plate over a plato secured at one r around the edges, is that any free diaphragm setting tho motion will give metallic ringing sounds or harmonies, duo want of h.......g„l|,„ty , while ivitli the loose platu held against nr, the c rue ig i Is i 1 | | | the sounds due o 11,0 movement of tho air, mid the molecular sounds from the , duo to the motion given hy tho magnet, are very loud, and ee from all secondary sounds which tend to destroy the perl'eet lotion. more or less pressure of the plate against tho car, it may lie to approach or reecdo from the magnet, thus increasing or ising the volume of the sound. i not necessary that the plato should lie circular; it may lie shape or of any iimterial, providing it lias secured to it an muiture ; tins receiver is preferably connected to tho line hy lilo cord containing two wires, and when placed in an inverted in so that tho loose plato drops away from the magnet, tho ig and closing of the circuit liy a key will cniisc tho plate iittracled when the circuit is closed and full away from tho t hv its own weight when the circuit is open, thus producing 'lit noise to act as a call ill place of a hull. Of course, thil ■r '“ay lie used in connection with any form of telegraphic lint as my invention, — I-3 hi a telegraphic instillment operated liy sound, thu com- n with the diaphragm of two or more electrodes placed in cluctrol) tic liquid, and operating to iucreaso and decrease the resist- 1 tv t'o of (he oloclrie circuit by the movement derived from tho iphmgm, substantially ns set forth. Second. Tim combination with a diaphragm sot in motion by the "i.m voice or other sound, of several pairs of electrodes insii- ‘■d, except at or near their cud, aud an iutermediato fluid con. dor for the purpose set forth. Third. The receiving apparatus, consisting of an elect ro-magnet, e, and loose (mini plate, artaogud and operated substantially as Foiirl/,. The combination in a receiving instrument of an electro- gnet, a movable ease and a loose plate, arranged substantially as forth so that the saute may ho used either as a call or a ruceiv- mslruincnt. Mgaed hy me this thirty-first day of August, A. D. 1877. THOMAS A. 1CU1SOX. PAGE 24 T.A. EDISON ATPLICATION A flMM TIUD Sc}i-5 i*7T \GE 28. [iNTKIlKKHKNCKS H AND L.] THOMAS A. KDISON, OF MHNLO I’ARIC, N. J. 'Amir. In Western Union Telegraph Company, of Xew York, X. 1". „,M, Am.icATioN nun. 1>HC. fit, 1877. l»r. in 'rm.miosic Tki.kouaviib. [UlllSOX'S CASK, NO. H.I.] [Spccijiculion us Amended will Corrected .•] til whom it muy concern: u il known Hint 1, Tinnitus A. F.dison, of Menlo Pmk, In the o of Now Jersey, luiVis invented an Ini|irovenient in Acoustic ■graphs, of wliioli thu following is u 8|)ccilicntion. [y invention rolnlcs to ml iicoustic t I 0 1 1 c t 0 lit iblo of viliriition to produce sound vibrations in the atmosphere, oniliiimtion witli [a resoiinlil tube'], an uluetro-mngnet anil eon- ions to a circuit over which iimlulatory electric waves arc caused mss liy an acoustic telegraph trunsinitting instrunient, so that Ills will he produced by said plate at the receiving instrument i la r to those at thu acoustic transmitting instrument. The same riiment is adapted to transmitting electric waves or pulsations ■espondiug to the sound vibrations of the atmosphere, a the drawing — ■ig. 1 is a diagram illustrating the apparatus adapted to use in Rustic telegraph ill wliicli tliere is a rise and fall of electric 'ig. 2 shows tlie apparatus adapted to a line in which the polarity !ho current is reversed. 'he resonant tube or case « is of a suilahlo size and shape, and h he vibrating plate' forming the whole or part of one side or end [he resonant tulie or case. 'his plate forms an armaturu to tho clectro-ltmglict il, said olectro- ,„et being connected with the distant instrument either directly !»y an induct ion coil* .'lie plate «, is preferal.ly polarized hy tho magnet h, which is wu as a permanent liar magnet, said plate It, heing attached t.i polo. Tho electro-magnet tl, is also shown with shoes or. nehes to thu cores with the armaliiro plate b, hetweell them, n Fig. 1 tho lino/, is represented as passing through tho helix ? ns herein described, mny be in, toiieil diflercnlly. which nro shown ns resoimnt tub unit tubes nro iron or steel dinplti f tile elect ro-ningnets K K', whit “• which slide within the tubes A i 'Jhe object of the tubes is to nil of the column of nir in the res, m to the |i:irticulnr note or tone i hi diii|)hnigni responds to nil the nt some nieniis provided for strei icuhir tone, it would be very dil " required, but by thu use o t overcome, beenuso the tono is « vibrated iu linruiouy with thu no ith mi electro-magnet of nn ir.u resonant case, for rendering tint] Lv ns set forth. "iili a diaphragm, vibrated l.v tube, variable in its length, so a tone of the transmitting iustrum, th a vibrating reed anil olectrol. it of a key, placed in n shunt circi iy of December, A. D. 1877. THOMAS A. EDISON EDISON'S EDISON’S EXHIBIT. 9-9. EDISON’S EXHIBIT. 58-10. QL&yr- As EDISON’S EXHIBIT. 101- 1 01-<0 Q Ql4 UCjfLwh ) 'Vjf6' tc t$iz. ^lAjMWvdr datim Qvd Hcux h ~fau.Qo(j c-o CVltcd Q'i'iasviy (jdta.'ivO'CK' (jUu^-*j uriaJlLj OAJU ckj- bi&toU Lu. n 6-cUc i^JUsb QAplo£/Usl'VlJU<£r' UAL l&U.-VIvL. ■UaJL Je\xUudiA,i.i.eJjf' dJccJaliA a tyvk*J UsTdu^fcasvxArrxIlftjL Qe-ytJLdj (VbA~ Lc. YhJfJr LlA, (Xri ^ftLc. ecu A. eArnZ**.Jz?*vj Qjc#^^ O'vJyjAjwj -°~4 Ua-<~^ L-ce exXLj - <x l£-^co\u Lh clx.cLj/xJUA.<XDp^2) Ac ^CCulLC^ fstcA' frfJLtJ&UtJ- ■C4JL) GZ.(XASQ '/LdC^AU A&Ulltr z ol JblcM ciLcul^UCLry^J T(Lu tmA.Wuu ftAUAZlisl'lA.eA^t^~ U> UljjJlA^t^ (P &W- I'VXC'yL (C- d'l/l cAa&JLe^ /Usi'lO'J^'ia cfLd-t^VX dO d~G£i.vC "qLuImM <hT QaoaA*-^ 4^^^' /UajJLzaZ ^ J/^ houses ^jL/~ (uac^joj o-M^AJa^oCj (asaz£: (K. fe< Q/U\ cJb Ac. ^ColauA Uo ~ClcvnJ- ( ’yyx.tiieA _/ (j(\ V-'tXLL 3 (H/Li'i‘\J Qsj\.o-&-(L> c ZL EDISON'S EXHIBIT. J± EDISON'S EXHIBIT. 103-10. Hr 103- /0 - Q<^> n^r e^utZZZ;^ «, co (]*.CA-y (? cCtC&jj.cL eZ*^c^ f-n^c^JL) <t.w<^tirblZjtL . CL ^rt>t*J Qyt.OoUJU 0-o-^eJL- £mlJ OJ taJJh Qrtaoif.oJ' ffl'l.&XL* . Qj fxlatCCiAA^ o 'UHjiz, ia aZCoZdLjicLjfc l£<-CJ cicci^l&lAacjyisyj <4-~t^^yxnylXA^0~tLcLj u\ CA- cfi-d^tJCTr^ «yU & tpL<A. cj^ suui+jfXrz^jL ^'c$rr(i.ts<.Aj(>j ^ Qyi T@Z*C? QlaCCM..j3 />CCO^jP&CJ CCOjCL^IcHm n a^l.xsI'UL.liAcAJLs ^riiieu Q'olSLa~4-isl< 0^_ (Juift-otMoC' 4**eJL nv cH/x/i inxtLJ'jliM'I'U’A) iuuuau^ pJ>.LuJLIU.u &*n,\Z7LjiJ~'^& C4AyH~Y^<^J!-j Q<c^VCefJZ^j tywxistLuX&J chc^jj)vu**>fy*yj CJsiA+ea (lA t*^L-<^cx£Z-<ris'\^* m EDISON'S EXHIBIT. 104-10. EDISON'S EXHIBIT. 105-10. OCT. 12. 1876. EDISON’S EXHIBIT. 5-11. / . L /W~> *'^' /u-4-^ "'"'-''-'y £^. _£w- ^ iX- ci j 15 //- / ^ ^UcuxJL^j -faxs-e^ EDISON'S EXHIBIT. 27-11. tSJL&pJKTKA, __ fa " * Q&l, fa-tU fo'Cas/t^ga X /3 EDISON'S EXHIBIT. 32-11. EDISON'S EXHIBIT. 42-11 1 J -4 1 feoiuL&yid 4n- // 4^/. . />,-/ irrf, (cX/rriS O 84-+— EDISON’S EXHIBIT. 48—11 EDISON'S EXHIBIT. 49-11 EDISON'S EXHIBIT. 51 — ^rrvyJiJL, LouU)-!^ tO~*/^v ffVML) rg^-cJL /Vv^wc/A ^vyfei 7oX/xIa, IW^MI c^K. KM~?£A.srv\a-l-<x_ ^-.Xmxyot ac/fv/j^ ^%rvNlD^/ • (Oi. cl^ — o'-'v-'^'^CD EDISON’S EXHIBIT. 51)4-11. i EDISON'S EXHIBIT. 56-11. M**'*'1' EDISON'S EXHIBIT. .61—11. *-(j Sn-^TY^ n^v £tr-D«A^ v- ’ ,^-^- ^ ii i . , rhnfikabnrf ^ ^w\ ^ftiA -*^*«. o*. oA. brtfer-i>d. Caj «^- >C5S_ fk*>$ 4~f-/cS-K. *!)**- nry\. --J'-I-'l' £ ■ij'-f '/t**, <?-ficXX -/?<s.<^<* __ . „ _ . 0 o^*X*. Ur-v~Jl<^ Xj^+JF A^o-i-AVa Jr-OcAo-v IPj *-C>_ok .£. <2 to cH. oX/C «-oL '>-«✓*> <2/^ (H-ic^l. ^/W-'t^v-os-'C'II. i?'r0~+~' — -*-*-&/ 1. — $G'CA aJCZi P/j^AK v«-t/ (^ o-t»a^ C o^, Ww- ^ f" cr-rc*- c ^ (t<Tv. <3t^c e^CC^- _ (9 0 o^-oU_ C<nAW £_ r »A/V Pi <* *\ 1; *°<’^4 UhoKJ^ ■Ut>-^— t/r<^- £ °-v •As C^c^.0^ EDISON’S EXHIBIT. 71-11. EDISON’S EXHIBIT. 82-11. EDISON'S EXHIBIT. 113-11. Sfu <$~7 \.&dbyy .tf jc . jo kAJ^C^ /hnW1 dtff&u^t/' L a i<r/ue/ (CwuaJ^U, M^^ias #Jta,&t <aa ‘‘tHvuA’Mi ,ie»A^ZSZUc,. fjyfa*™*". '««Ap& A*. 4<*u. '(xif fiLduiAPuar. ■%. OsUtUt. /'" JZt&r J, / JTjiasi J c*7foc-n/yu<L,i / S' UAL tyjtouuJrOAy. tyktiJOA* fat. $e6u<+ &' ** tr^ TPiumJmsylk. 6l £/)0 1 6kff dtesHd UaJ <y Wju*J*jy 66 quajtu 4'*™ !(fk a. Mum cczr #4 ?tuuJto-y u rfUcO*. 3i /<*"" (irfc"*»«wo Afc W iuf- «“ "*** , " „ /, XU A*. /«— m** ry~ t'^Aagj, 7, /— -w — - /** ft k-ftauZU -*,«>-_ -£“ 8 9|*u«Jhl4 ’I l "SuSkv - - . q y. w|a«0^v-s<>»- 10 ^tui. "X /O* OQU sfc* -A) Mr/ 100(\A V»uu * . - - _ ^•LlJuAjuUy,^ **>^<4. ofa.. OiaJL* 'Lr / m EDISON’S EXHIBIT. I if/"" „ n It 4 ]mvU%L /***> &*******-„ Je^ jkkwujfttiJIr ctoi/JiA- fc $oy$00 tr/Loo* J {,? n^tTiiCtaJA. - 7— - - - JcA-o<^— o EDISON’S EXHIBIT. 115-11. 1 iJf *«**• kr^^ M (A^ — i — v 'jL^^ EDISON'S EXHIBIT. 116-11. kiMi n J(mA cm mjlu) Qo^^t/Uru, unJt CUjioUUjm^y^ (q Im? <TK (UtIa&L (As^ OLsCod (JbtA^L / ^ OUjL^yiAJlJXA. A^uJ^ (Js iArtdA^b to fnr) bn/tliMsc, Q sxUL&)uLs*s<*la*^ UrCf^T dji^Lo - y &llA/) UrtJt -fa gu^ {/A&fco Xjmajla/Jt urdt^ ^ /^ Ot/L(CL'- <w a UMju. ia nsuo CjAr^iK, .OlAj O'Vh . tUfiAy MA^ yw>%. iLOU^ + ^ ■-+ JkhiA- oTaA- eJ— EDISON'S EXHIBIT. 120- /f// /50 *** ,s, ,, Amwtu* U*rt/ ** **<£/ auaZfy Jlt&3u£c(Zc0U /££ +“>f y fif/zt/sy/sssi filxJ- /stt^CeJ&ex. tort fif&tf '-r / re *t*w AocTUl Mentis-*, id </•£* CCjt&yto /j :fyu,iu/0&) y // voiaatt A? y *,*.»* 4 y m fJi&rftcu* fa aiuAek tud/ivs «<■ *-zr r- QJuttt Ol^ut/r -ifcUa^kct **//&**&■ 4m*u* 4mJ7~ afa> fo~Ac~ QjtZr^jaXtZu /y? Q^zr ~Pik. zzA^to* A fa focu°A&t'C<^ , (fc&iy ^e-trd If ^/fasUAjeL^* £ . $CuJ ek/tX^toJ^a. , Clat& 2o&^yufa/£^ EDISON'S EXHIBIT. 121-11. (2 d*vu/ £r-ZAJ4 &4V t EDISON'S EXHIBIT. 134-11. EDISON'S EXHIBIT. .135- EDISON’S EXHIBIT. 136H1. a ' C ■ ' » 7dfJu.~; •:<. r> ,/ta^ 'o{ Lku 61i.Wak.K \AyOlm^ /U ,4a*rtAK-0C I/U. ov U-' vr/A cJswJr MjL CU^fjio^ L^LQjUs^ Op rl lJ)A^^-€^f'irk 0JrsvJ'"l!jL sW W yjyUM* fc-8< iaa //,' nw pp papaya 9HCtdtd -. ... (f)lcUm J! /k'CrUJ'’^ /hfUdMtu J AuAM$W0 fa/*pfcut- , a Jt-kauJ- mr- ATthtm kiod) ruT «<wHW /* W fcjAji^ c/-i» .PjUo*<^?> finSC a e#4f- tpyLar Q'/ fa td.JSdb^J^a,, . V-/7.C v. d^rMUey adiMfa* V^'/T' ■- “ ^ *'Vr — - ^ p'-J'P' ^ ,y _ oPAoul/ /^^ \ ' &Pi ^ l# nee A EDISON’S EXHIBIT. 139-11. fW /SO>#y. SujiJuAX' AcrM*,. IT c^r rffr^uii * /Str. (Hr^t<.A /£ 6 *£&ui^>.AyA. u< &o & cu^Akx dfitoAru - •' <f Vi*/ i*«**A*c kanM*. ire*™* aSTOd* U~“ * EDISON'S EXHIBIT. 140-11. ff&u 00&- ^ "'jk, JuS'ytwf' tkr/uyu Qffj^/ur^yZ^nA y/‘SOt> <ptcm< . t ■ <2ae2tc. &<±tcl_ a J . . \J’<53£i+/x Ccl/S 6*o£t yAsL 1?*UL <£^<yfarzA7Zj> k <JZ^ JCo •SyAanAt* 4t^i€nJ /HtctcCe^ fa fun* A^^tA a. 0<a/A>a&'™ , /fi-SA/t A&fa/zia^ cw~ eiAJu. 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Sj/keJ&PUQ Sst / 02 /O/ /// ?r ■&C/0 /J jfeuk. CoSttU^ /j? <T. f^2/ C&COt* UUOE^c<jtn- &nrzS. S^u/^ 02^ /l ^rptsu. , / * 02^£C(2A? &irZ4^yc££Z7~.~ (Lfotyt,' /{Tfyu*u.S-cr<^ 2 dfa (°<aesOL. OAtrtc/-/*? /nra42T6*4aX&£ 2f io -7unu^^ &&l</ ^ura<ri^r5^ ft? A&y/tcJty c£ta<t*- jf & CUsurvr^^-'. (2\sli&jM)LUfn\ t* /£f fti &r/u*t 6zc- fafacjjxMy Sit tti4u*fuu**.f hr^ Ltrc~ <y^W JP/a.&pt&r t& . ^ SirSe 7s~j£u^Sa^t £ /rtncttfrctty. &dU us/tf/^uriA. co-taJc #u/~ SS^>, . cruJ^ - Jj^~'Qj2JLClM EDISON'S EXH I BIT. 145-11. ^mrf-l^UA^/r jtuit* /fgr&oi... A/trm f(fi -$ G74y£> A/. &J'0M<r./&crcU<tf&iy<& @ovzt OA^slc/^h,_ /j?X_ y^u? Qtnrtf 6<rr rjA* /A' eAazco*. - EDISON'S EXHIBIT. 146-11. £l/~ OstH ofataY/ ^ 6^3 2f ftnrytei &M xt&lm s?.)2j ^ <r fat) -tff 06C414SU. <n<_ fa£fj>l>6L fit Jth^ouute# Jx£ £u Pz£u^, . - J/J'l&ULL EDISON’S EXHIBIT. 147-11. du Z, <$£>( O&zkj Ad toe Vts&rc&J /^u^uq/- ■zsztte^c./'* — // tftcoi-c e/ >5^ /urGT £ a /uj^ (n^ sAtz/ ^ ftiAu< JfoA . fazfad Jltruj **. CjAt-cr mu/ Maj^C __ jfoCnt. fljtatiud 'h~WCM)t Qs&bcci VtASxAjLo UIA. - - - ■ s2 ffn ItUel. tZu&Cuty oT- tz. r£*y&/tAay** dZuiyt JuJ-n^ ctf, .AiSjfeo*^ &C* c/Aj/fecc*' c&- ^trC U*jA /£* //& SMMfittefy tA /Ln*v> 2&2£SC k-rfOy S<^L. r #7 i*r6^_ Zjrugrfu^ttd (UnvutCtt - t/~ ctreuo ft U*4j^6oz/&.. 'j&WZWuya ^ y - i0fa'€/''<u*u*' & tuZcatf&ZO^ y^Aa/t. <«/, fay /tttt&y (AxaJrattA EDISONS EXHIBIT. U8-11. Ituu/y- "7, A af~ &<?£/A teAy & - ///• £*rcaJ° tuZZ TCHCm/TUU.. _ _ (Tre&./f to-f G^zc/.y /^V ^ a?SA* @&td> /f MueUaas- 7 J/a£o </&*»■ tretc/fc^ -/ZaA &&//'- ^Z<Z2(___ _ _ _ _ _ ,-ofc — '^Tf777~ oA/m/!^, EDISON'S EXHIBIT. 149-11. /^ // "// k* //. /// O Aa n ?t/r /etlsttsoC l>6ty jbsrtry' aJtrtc/- <?6~ Czntfef aeY^ot-TttZ** <? < ff/ &z*r- /Znttf tr? &sur- v - _ : _ '#at^t*u>Kn<. /rJtie**faa* <9*/ - «S*& -AxS'sec* Q<s£«*u*f mettle & £_ _ _ _ 6 City. fay/unr*' a/-cur-j£ _____ /J,*J S/tffUQ «AM rttfye. 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C O o-f ILa cult 0^1 1 o^u-Pmm o-p <&£o*-pRtrf'j--* t*N CaU 6o>A l^\cj(r <^-l^ p crrflth^ <S -Po cfiet^. o^-f*c\ or1 l^ree -o^ 64^i» cA. u o. ia* — *-| 1 ■<i ^o-A~^ru« LU».tt ClClff -f*~&-r£ ^AjUIiOauJLi 0 o ia7< aTS ct_P-P VIA < J (a^ Cjw to rjfer toft ..^ ajf—lU twc of- p Cf~ uL cl, a-. go'lAjU-tj C^Ga IW.- jfc 'Ot^OC^. -dO-Po-l', III tX&OtCP- y*. k.OLO~ O cue fo oft J- Itv^f- IW.^ cUtst^ H-A_XLfi<cJ<_c>^ ofv Tfeu I'Sorfi:. Cl •^P<£pZ~lto-Qo^Zfh' 7 -f«-CJL>J cf-fe oL«-fcfi^-o.^ (^je^. uj-cC&r 9^tec^3c^, o ua (^^g-oaa. ■ C^»~o o Uhv-. c7°‘c'3e' <aa- oA— ^rtrwv. ~P{v< °(^ 41^ S. o^rpfc *}»»3« -Tfe tfeu-f^ tvJj ecu aacc,^ 5CO,^ ffc o* ^-CV-^cjG^j^ „ cp ■ - _ EDISON'S EXHIBIT. 145-12. Cot to |pcW Sii&pRu^Znotf h-tf cl/'-e, | ICTSZ^jt?. ^ M -1-0 Yu*** -f out t ^oOELA, <54xelv O^Ia^Ju. ^ua. e£^ =• ^occA l/n |0^o*««M SluLp^oCfc. (?of*po,, lo qJtcw^.(y S.-JLp£<Efc «Ao~ cv^ . i -ffU.cJ eg cocOte. J^v, o^a. f)c^4 L»ccp/rro Tl^Cc^ ejh x» *X£ -* 60 cx^~o ffcoX ^ coJ^ w. o- <$0-(2tZ+. {aJ2o~c£L &-£-*. «=^‘ - <=&Q — EDISON’S EXHIBIT. H6- -£pe<~ki/»c| riSc.qJa>rCL- JbejpfcZUUn . COl fwAJ&oJr jOJ< Gt lo-bcf^ 4i£ucn-ecf a«cL.waJ« o CmXclW l„- 6l U^ec4 IA. *mj ipcoJn^j for lAe. -Has idoZlrf of-jtf, -foue 6^ ific wtou.-weid- of- tf?e diapfr.enjw. °l cofjif k»*e a. specific ofT^. loRaJ-./, <UwivF Ji> icfuxxee) i*»i/*£ life* og o-C-Po^vwj c*. peJiioi/'' , tJft« o4(*cf- df—t£ii MWlAvfiim <i io CooJ — uoruouU ywoJeAioAi YMa-^.oi* cofxicA <*/« ->w>v. coniod^ of ePccXSVc^. cod* Dftt Mve^ZhitxA Ci>hi. -Lf> o-. dopo-i a -dajfcf o-f (,&e ■ vt« UT'V' ~ttrr '~°J^C+J1 At ^ QoaAdl A cau d- ^ w ^ ■* - ^ ™ - ~~N ^ U/Ua a C* Acc«coo, tw>.. «ir cJlcy-}<J- err o-'Ov*^ « pto^, A^ej&p^ol^-Ptp co-£u*IeXt 09 ©«. C^cciCtd^ »f -W,,,^ C^o^^fr otf OUm'uai. or cdTCL. '^.tfo^pJUk,, <^4. (“ ^ -^PoLo-Rj t^lxQ I' tj <’Xa.O-«|'«aa 6*-{ W^3C<4X«*a4aa.<| tiX ( 3K« opvtSiz** J M <* <701^^ 61 '^<~<^L, 3 if- ^Tovvr, 0/ «_ /<5 r-_tf- o-P~x)Uaa4^ ^>aj1^a.oS-P<^ ~j£m uttiofe of-cnAo-o, ojf'oAAIlAA-Cj cf- ■/VI *— O- f(i o- vm«d*i or ^lud. c« -PcAVfjtft of -flivic d-O IM-JO-C £.-< ptiviiwri b r -fiiu-nd “to oj oo -e-^tfle 6-e-s-f Axo uALj* EDISON'S EXHIBIT. H7-12. & I2f ilouvto-, S~ ifr-f- j 9 A~ u> te-kwy rfLetyeftiow o-^. oL cts\i-c.<d, o^iuZcZZZLt <^- oi la-ltt* -fa-nU-e 'ti^liJ-C -9i)->rJ- >*-OiL*ptMc/«cl o-o -(v, ^ Wo-vt)< 'SftaJ- dJlU U «-» COIW l«d -<0 clf+ZlR J/6 lAA<iio <_oot£~ - Ooj o*/iw o-^tfcj IxlaJ-tA ©>Auw~ dtCm^p««c^ «~5"" !^0^^LL«ji^rtTc2 J4a| et* t«j-ev. .otf" -^1 ee' Tfco. cacTTw^ 0-f.tM ~ pfc -VioGi<»-fo e>^—9 <Xu-t/-, ■A.l^lA4x!r "Ha« '4*Aim*. U -J>tAV~ffc -Oiitfc “fo <X <AA -eT^J^fl c H^C wJuiwcfiT* 04 <a feui of 04 ^cwXw ^ cjJx^oSt— u o-P.oaaa •«', SjiCfoktAA^ Jio^Gy ^ <Xaaa CWiftJir d~ oi woP rytcoir detlf- U-J04I-V. •YnojTi^ei^ 6oj '^R.o-A-pfvtrro-A-- ‘J 1-llA.f /^Ro-tt.jjpflc-ro-A o|o4<v&u-tc? «aa l/a -OC ^ flutuUpfU.A. o-g-^o^Gow <U« clo.koo Ale o-P<_rjL^J »^C4 c-o-ov oo-Aoooiv. u ttA/PCcf<*. CfnA^J^uL (| t ^)o-d^D O-^ cc ^V4.^U-C,*CC^) ^ ^ v^’ U <^-cer <Ucu^et^.<r-^-*', CWt^ tjf citric -\A-0-9~ ^CAVfiA ^ l/c-T <H>|0 rVUAJtXGw?^ t^«yc4^ ^ tyCA*| past — O-JpC^T L a-Lks*-Z^_P , KaaJ-R^ *-0 tjf 3 O Oi-^e^-y EDISON'S EXHIBIT. 148-12. ^ejtfeoA^. H~ ttf *fy 7 of —1 H-'l 1 fvf.*- — «, r««~«. -fe- ®-g— -p-A :i o ^ 4;. ti" t-Afe pu— 4/kt /9e«-t-fi» t~j gQCg^^ EDISON'S EXHIBIT. 161-12. EDISON’S EXHIBIT. 162-12. EDISON'S EXHIBIT. 763-12 EDISON'S EXHIBIT. 167-12. EDISON’S EXHIBIT. 174-12. 4A. 1 u - - - — *■ CS-^- £-e»-tS<^^ (oZ^ k~t— «-^-2jSj.. (Si^^t-^jL/tizr i-4- — o — c^f~ h i>-s-€ - O J->-*-<jji) K-t^-is-.. o*-« ‘f’0 ^ uv . ,: ^ ^ IU ^4~-g i^-j — ,✓&, ■ ^ ^ * — LJL^ i*^-. ‘-y^- vJz o JL-Jh. <*- u«. ^p> . ^ nfSC EDISON’S EXHIBIT. 178-12. EDISON'S EXHIBIT. 181-12. EDISON'S EXHIBIT. 184 Si/ /‘ 5£ $> M + <s.,2 favtd fa 2/ * fa at* " * "’ ' S/^A /#» <r&“~ -cl "? - - Z&O fa /r n A V V /r . , /a 20 '>M7f~‘/20 f^A' //y l 2/ EDISON’S EXHIBIT. 186-12. 3 Qdui o-e S eu.o/fr- *" «-CA (P <? -- ? u {^f-~$^(ULzz i uoji^J^ te*k, ^ Q-~*>C3S^k EDISON’S EXHIBIT.. 2-13. EDISON’S EXHIBIT. 7-13. EDISON’S EXHIBIT. 13-13. EDISON’S EXHIBIT. 16-13. ^7 CX- Uh. ,<J- — Qt p^N^ti^Ud2t>6- Q^~k CGZZZZj L "t;, ~~ji ^ ^ r^Lol-U. ^ *~ar^_ <U^${> tJL. 9 ^ ^-«r. wJV-a,^ «U^ <S>XL3=Z~ €~tc , 3/c. fv- *-£«. p-^-C-j - —v Ttr u. ■ &>c£o4Jn**0 vtf-/3 EDISON’S EXHIBIT. 18-13. EDISON'S EXHIBIT. 22-13. EDISON'S EXHIBIT. 24-13. /i<d EDISON’S EXHIBIT. 25-13. JU ritvl a! 1 4 J'hchmge. Place, .Tvreey Oily, N. J. EDISON'S EXHIBIT. 28-13. EDISON'S EXHIBIT. 32 O^f-SLI lt-t'l "Jo*h- wctfc f^eceA, ^foSQ-JL- - 6L—yv. '~—k& oC_>c_ c cJb H: 'b“ q-Hc— Qe^X^.,r, - & T^.. C«^ L fd. EDISON'S EXHIBIT. EDISON’S EXHIBIT 43-13. “t*. 004 tzzmSZ^u — — ^CXfccZ" w*.' -A— 8- — cc,^ EDISON'S EXHIBIT. 46-13. X.-M -dt ftA' /^. fc£t rvrasfi.A^ .. A ., ‘ •» 7 cZlj{-h/?y<t jAiv " /f / ^WcUTTx* /f " ^ /A. " _»! <3%^ rl<*MLo «s OtJ~ • / 3<-<2jL+4nr*JLS „ K „ * •• x. H~ " /<£. (< .. // 7 3 . f •• ... «( ? ' 7 A> ^ / /7- — >— /■ »" /ji _ /£ /A SfaJtTL, trff 6_QtiJ*nM4 u/ yt{ 7 » ££ OaM flsjUL aJ-J/./s- /i O** - <?,„ /? /? .. '• // /f >, * X* h ,. .. .. '. 7 # h\G~J $ i <}/ X/ {e&fvLnO fy(wu_w/' ‘ -** » ., _^L_ 7i j*<f Id £4- X6 d-7 2% tX*-4cw>^ h^oeXXfJ^rv iJ-vy 4^ f t/V»*A>wvk 7- '/ rf’ 7 <f /?- ? 4* EDISON’S EXHIBIT. 53-13. L i ^ i y ' 1 1 ft-< yyc^JLr TV-<ry , 7* r77 * yJXZJ v^-* WfcO^ C^-^-v- AvJ-^axa^> ^ fW^ eY^'*<2nrt~ 4> , *”*<A 0*^ t~m-U| trl /Vl<uXc VVW' Vw~J^f« 'll^tr-yv^, r^ CwM" Jv^wu^vv* 4 4 ** * r~i / djYSw^/U W^?w I^v+- * u, «-> ^ ^ ■~-fcX^-u' -•'T-^ y-Xkw Jto* ■"~/r i EDISON'S EXHIBIT. 54-13. EDISON'S EXHIBIT. 61-13. EDISON’S EXHIBIT. 62-13. EDISON’S EXHIBIT. 89-13. EDISON'S EXHIBIT. 114— A<*uzi, , C**~*7^t‘*-ey**« ’^At^r-zt^cc. a <-sUri«^0)> r**f^ ^7- fi ca J&OUiLi^ _ _ '*e/l/UAn -&>tyL AsS /^t SC&C&iaA^ ^^MZU ***«~4*- u* -fo^ /.... /> ,»y ;.^ ... to _ . / . „ tcaf-AAr & /'U ty S<!4cttA2~ e*uA — . ~^AzduU. tyi ™ 7&L aicyiAtac^/^. *$** ^m^tte /z. Atom. 'tfriAeZs-zi^c £~~; - - - — Bjp , ^(■OjA/a.czo^ j£?~t*A Arm treue^/r3 ^~-~.^rrn ^ ^ j £claims-&~fso , SjHCi.-j to fLCet^tuyrfjzeL, a.y coisui.'ut- aUj^-JtA.az^6i, t A&teujtrx CC&- rUvu^JSs—o^. c<^t If jf EDISON’S EXHIBIT. 115-13. 9Uv / Y t*y 7 *3lCtt/&nMesi-/ EDISON’S EXHIBIT. 116-13. EDISON'S EXHIBIT. 121-13. EDISON’S EXHIBIT. 125-13. EDISON’S EXHIBIT. HI-13. EDISON’S EXHIBIT. 158 /^JruT Jt~ „ 3 £u-J< tlPa^< VbitvUct /<• ■■ " CcLtrd /{? dctuovn /& t c rf/.dV 4 ' MPa a A /ftmtci ¥ ■1 £fc*V J~ tcUar-td dd* <3 /^moy JajPe/&y^. ? 6 .. /«- / .. /d n ., u - J£sJ<ufyJni m> t/d ^ Jt«l\c*y /*- /6 „ / 0 ft £juu/t-OU^ < /!L /0 /3 *» <f/^iAA*-w^^v/' !0 ^ ^ LLJr- /** JO ft> /O // #- .. ., / 0 J?<? ,. ., /O A/ / 0 /d. -E<? .. // jL/f- /o at- ■& A£> IxSi^t^A^nr^ — Ex KiaI H -*7 AS J.i ? Jo m — r _ /4-t X 1*- EDISON'S EXHIBIT. 166- EDISON’S EXHIBIT. 168-13. EDISON'S EXHIBIT. 175-13. EDISON'S EXHIBIT. 179-13. EDISON’S EXHIBIT. 169- U EDISON'S EXHIBIT. 81-15. EDISON’S, EXHIBIT. PAGE 505. LABORATORY N .y' Number, T. A. EDISON, Menlo Park, N.J. {Copjmrplales VII I and IX ) It Booms not to bo uninteresting to make wider known tl.o following idoi snggostod by Hr. Philip Reiss in Fricdrichsdnrf, in his ti.no to tho Physioafuni! an.l the Sessions of the 1'ree Gorman Chapter, at Frankfort on-the-Main about t dTlttW “t;" extra galvanic way, and with regard to what has be, done up to the present time in relation to realizing this idea so ns to cause forth efforts according to tho obtained experience, and hence the n,ost I)rotit , drawn from tho action of tho galvanic current, which already has bo! sorvin r tl purpose of promoting the correspondence for Immunity. Tho question here is not about the action of the galvanic cmrenttocai.se movement of the telegraph apparatus, no matter how constructed, to prod u, rv.v'Me signals, but to make use of it to cause auliblc sig..als-to produce so, ,m (tones). A\ e know that the waves of air, which, by acting on our ears rouse in the hearing of the sound by tlrst of all getting the barrel of tho ear ’in vibratin motion thence are conveyed through astonishing fine lever apparatus, the joints < the oar (hammer, anv.l, st.rrnp), to tho inside parts of the ear and ll.e ear non- there; the experiment to reprodi.ee sounds is based on this: to set an artifical hr, tation of this lever apparatus, through tho vibration of a membrane, similar to tl, barrel of the ear, motion „„d to make use of this to open and close a galva cl a n Vl cl s connected w, h a distant station by means of a metallic conduction Previous to describing the apparatus which is to be used, we should first tak m consideration how our ear notices tho vibrations of a certain tone, and the a-rc gate of all the tones wh.eli simultaneously act on it, because through this sue requisites are determined which the sending and receiving apparatus have to per form when solving the problem now to be entertained. 1 Let us first of all take in consideration the processes which take place to notic a single tone by means o the human ear; then wo find that each tone is the actio, of a rarefaction and condensation often repented in a certain spaco of time T this process takes place in tho same medium ns onr ear, then its membrane, at'eael condensation, ,s pressed towards the cavity of the drum and at each rarofactio, towards tho opposito side. These vibrations determine the equal motion of tho points of tho car and the trnsforring caused thereby to tho auditory nerves. ’ The greater tho condensation of a sound conducting medium at a certain mo incnt, the greater the amplitude of vibration of tho membrane and the enr-ioints and inversely the smaller in a contrary case. Consequently the auditory nerves are ■"tended to conduct cadi condensation and rarefactions which might take place in tho medium which surrounds it with certainty to tho auditory nerves. On the other hand, tho auditory norvos are intended to bring to our knowledge the vibra- tions which occur in a certain space of time, according to number and size. Now wo give a distinct namo to a certain composition ; now wo call tho vibr tions of which wo become onsoious “ tones.” !jr«or or tone receiver, liot.li which apparatuses are put upon ilillbrcnt Stat mi irk, however, as a matter of course, that the combination of the nppnrat alternately use to and fro, is let pass on, for the sake of clearness and likowis whole is not put there as a finished fact, but only that, which has been fomu to the present time should ho brought to goucral knowledge.) The possil continuation of operating the apparatuses in the present state of knowl augh the direct action of tho galvanic current distance is loft out of consii >, because with proper innchiiiery this can easily he demonstrated by experii I tho material part of the explained phenomena is not impaired thnruhg it. The tone-sender, lig. -1 A, is connected on one side with tho wire oxtendii neighboring station, and with tho toncrcceivcr. lig. -1 B. On tiio othor si ounccted through tho battery G with the earth (or tho metallic return line). The tonesonder, lig. d A, consists of a conical tube, a — b, of about 15 coni i length, lo centimeters front, and 4 centimeters hack opening. It has been proven on the practical experiments that the selection o turial tV r this tube when using the apparatus is without any intiuencc, and iu u larger length on it without action on the salcty of the apparatus. A gi 1th of the cylinder impairs the use of the apparatus, hence a surface ns sti possible in the inside wall is to lie preferred. The rear opening of the cylinder is shut oil by a collodium membrane O, the center of the circular surface formed through this membrane one end lever c d. is resting, whose fulcrum t: is hold by a holder, and remains conn :li the metallic conduction. The selection of the length of both lever arms, c c and « d. is determini ilaws minting to the lever forces. It is preferable to make tho arm o e li an arm <; d, iu order to put in action at d the smallest movement at e witl cutest possible expression of force; on the other hand, however, it. is dcsiral like the lever itself ns light as possible, in order that it may follow the motic e membrane. An inexact following of the lover nd produces impure tones c salving station, in the statu of rest the contact <1 ;/ is closed, and a weak s] holds fast the lever in this state of rest The second part of this apparatus, the bolder /, consists of a metallic ca Inch is connected with one of the poles of battery C, whilst the other battery conducted to earth or to the return wire to the other station. On the holder /'is a spring <j with a contact, which corresponds with tin ct of tho lever e d in d, and whoso position is regulated through a screw h. hi order not to weaken the action of the apparatus by communicating aj le back part of tho membrane, tho air-waves which occur when the apparu dug used, it is preferable to put over the tube a b rectangular towards its li idinal axis a disk of about i>0 centimeter diameter, which firmly closes on tli de wall of the tube. The tone receiver, fig. 4 B, consists of an electro-mngnot, m m, which rci resounding board, u w, and which is connected with tho wire to tho earth, < ‘turn wiro-coudiiutio.ii. Opposito to tho electro-magnet in m, is an armature, which is connected iver i, which is as long as possible, but light and wide. r.nvoi- i with thu armature, is attached oscillatory on the holdor It, a PAGE 510 fcj-e /ZM.Ot*ea^eO A.<j. ^ J^cect ^Y-7f ^£%Lu A^sAALq OV& £e-t*&?£ A tX^XA^t^^ /&cCj ^cAdccdAa>^a teUt&w& &£ecx^iJ^/» z, C& @?za '.jrtey'J&Mi&i til sLcj^-i^ @-&uu-v X acfuiu fifcej Ao^. (zy/Lo^&A (X/isr?-t^l£sme.cO Z/fies A^/dd^S. f $ SMa.td.Cj ce. tde-idt&j (IuAloAA-j , <AxtfvCtMpa tj ^ie^atXcM, aa^z^s a-t^ddcXz-titdZ^dU. £.eXc^ /CfJtX, ■ ,'*-eff d&cij 'Zadlctmj. C OISCSI OJ &£-^ej~tJt**JtJ(j tf^ctqyu y _ . _ J / - - ■v^t^e*3 a^tAta^a*-, dJ<-tLj ‘S-U^^jl/'i^Ao-cc^ AeJ^t&ToijCj dAc, {urf&tt-fie. ct^fiexjt adc^a foitnctiZeeCj irn. ‘9n£?0j& vdtfuij s^c/Ac. (AzeXtJ 'fric^ne/' fe£a-e&»id ^H- AddAt g-ccCes? a^dAcel^AAd g/rcu) PAGE 511 ^ /?^cki-&S mKfneyJLtf, iO'Le. ^L^r?'t-G ^C~er-?'JI^JZ&> ^y/' */& st^JZZoZ#^, ./^/jf-i./i, grttivce. z£z; 4U*^,v / ^y^/'Jt^C ,Jz£ ^/~ ^„t ^/-^dr <zULc-Ss — ^tyL.ett&.tst-l tk&s ^^£1^/' <Z^/ /Z/&E7 J~ "> t-c yi't<y~>-7^ ,zJ o^tm^eu &0^^e. CZT<^u #£ ^^C'/h-t^^CeCs anst£i_4rCjey tfL~,r~ ^ — /J'/'tiX-dL&s s?l l 0 Z^/vJ-/'/. y VUr. Ja&/ Cl, Mc^U hit l, £&ctitr P< fttHid MsC IMJMt cl), jrwtl />-aJx- rd. j ^U>hujtef fomfUjt PAGE 'faoiu SacAeAtA . Aa/sAv/i ^AAr/w/a/'. PAGE 518 Qhacfo /rys-£) lj/(ccauL jicujo/o/J &, u/dcud,j*i tru&Aj i, $t/ic btyA^c/c&/dbe^>n- C, /e$ta44 tu£c i>, Gei& *&• $A<zdJ fiti'ck J- r g JYhrtt ^We PAGE. 519 o , . r> 7 (7 y— ddiiotii <Sy>(ilUh Sluuvuj l/vicuidL ifW. (ocud&rM fo&e/iw/c vfr'&wut - c,*/™. Id " Sc/iJfffW 6??(/U’tft/r /Off-//- (Siting &<pPu£’L.1f~/tyeifi(Ut ll'L-ll " (/Hacfc jtyrUy faay J7. 7*7%) (7/Utifo (jJ/i/ia-4 7>Lccy t$/. S&ypJ (jjbco-lvC/uifC/ S~3) PAGE 521. (ocCidtrrui Soo^iOtt c^ri&fcZvrnerit '/u- a. ctMuuvty //. /87T. PAGE 523. PAGE 527. PAGE. 530 (jjhund jia^e. -/< it) &■//*) sJ/M-fcuwtc/tt /^/-/J- ../*V. 'to. /<$// &cfc}0ii<> &?eAtrfe£'-7iv)rfuwi6/i£'- 5&M fincuit. /ipj PAGE 532 &. ,&icuj atteZa&c&tgigiapm/ g, atu&rru PAGE 544 l MSI' A lt lAl ENT 01' THE INTERIOR. United Status Patent Omen. To all Persons to whom these Presents shall come, Greet in a ; This is to CL'ilif.v llmt llm annexed is n trim copy from tlio files of this ollioij ot the File Wrapper Contents uml Drawing, in the matterof thoenveal of Thomas A. Edison, Assor. to Western Union Telegraph Company, filed December 2, 1875, for Aconslio Telegraph Apparatus. To testimony whereof, 1, E. M. 'Marble, Commissioner of Patents, have caused the seal of the Patent Olliee to lie hereunto it nixed this twenty-fourth day of November, in the year of [seal] our Lord one thousand eight hundred and eighty , and of tlio Independence of the United States the one hundred and fifth. E. M. MARBLE, Commissioner. New York, December 1, 1875. lion. Commr. of Patents. Snt Inclosed herewith I send check for twenty-five dollars, fees on the application for patent for Wheeler & -ieronio Paper Box Machinery, and the caveat of Thomas A. Edison, No. 71 Acoustic Telegraphs. Resp. yours, LEMUEL W. SERRELL, per C. II. Smith. $10 Clik. Caveat No. 71. To the Honorable Commissioner of Patents of the United States : The petition of Thomas A. Edison, of Newark, in the county of Essex and State of New Jersey, respectfully represents : That your petitioner lias invented a certain new and useful improve¬ ment in Acoustic Telegraph Apparatus, and that lie is now engaged in making experiments for the purpose of perfecting tlio same preparatory to his application for Letters Patent therefor. Ho therefore prays that the annexed description of his said invention may lie filed as a caveat in the confidential archives of tile Patent Ofliee, agreeably to tlio act of Congress in that case made and provided, he having paid ten dollars into tlio Treasury of the United States, and otherwise com¬ plied with tlio requirements of the said net. Respectfully yours, THOMAS A. EDISON, Care of Box *1089, New York. New York, N. Y., Nov. 22d, 1875. United States op America, ) City, County and State of New York, f On this 22d day of Novombcr, in the’year ono thousand eight hundred ind seventy-five, before the stthseriber, n Notary riiniic j,i 1 f !,0,>'ona1Il.v •'l'P«'.vd I Ik- within named Thomas A. Edison Ldl ’ »ulei..n mil, tl.ni he verily believes himself to be lhl. oW-i ml , , ‘ vemor of the within de.-rrihed in, n't in VrnusnV T.-l..,,.,.. "i ,MM Iliat lie does not know and does not believe that ihe'snn ! ^ll,,ar,""f' 1 known or used ; and Unit he is a citizen oi the fnited States.' ' '''' *‘f Sworn before me the day and year above Verit! A‘ ''‘IJIS0N [t„ s.j Ciias. It. Smith Notary Public. Essex, and .State of Xew'.b-rsc, I'elegt-apli Apparatus, of whirl! It farther ennsists in d,. vires f(,r throw, •„ . ctteui, withon, intern,,,,,-,,, its eon-inni, '" * if rilttlllT COllJjisf.s .|,.ri„t* morion by a nwchuuic*} ’n!" T °f. SJ)rin- I**»i.lnlni,w< * wlneh jiemlnlums are of different ieie-ih ’- 1 10 or "'"••leelm.mai: eells in the eirenit.',,' -i vl ! *. 1 1 1 1 ‘ ' " 'hrnu a main bafterv n'f.'sa "'liile pend, linn, Xn. s wi„ 1,1 "«« seeornl. by or ,,r —’mi!1 S',?, spring jN-ndiilnm oTe,, lem-th'oM fwi,h |>end„!,„„ wm make the same number of wh' In ' " l°mh nn'1 tin, pend n 1 11 in being used for Hie nnrnose t " ; this seeoml sp, foreontnei pui-jawes longer or shorter a, m '"‘'‘’i'" ’’ W<!,v ,I"J I",'"ltllnm 11 ibnitions i„ „ .second tl„,i. .he prinr r, w LT'i “ " "'1‘:ltor ov l«« »'<mb ,,nd ,',:rvfm ir from 'i bin tin,, ;} . , * * “‘""'-fr «o..M net ,« „ da, . "■ invention further consists in 1 T*-1 or’‘l,t' least to a great ext,., S‘:Tr Mo,*° “I’lcinitus. phieeil'TmV1' tl,L* eonjum "’.ves winch Will easily vibrate, ■°».,«»onnni or.so,„„|i„g boxes pendulums, at different* vll 3L J««, a number of s, 1 10 '';lnsmi,ii„g sintion. „mk K Sl-JT ^ I htse pendulums, unlike t|t vibi-. t •' ,W of vil""lt'"»s. nJ ic.of',’’ "‘Vl-‘ conn«"ion with ,l e ^ '?eitM"gS l,-v Elisl'» Ontv •»- * ** , CSZ'S. u'“ sages over a sbei r, •, 0""',|u'1 to tll"ls"lir' 11 tfienler number of mcs wb , :r; umiit !,t '«“«•> than is possible with the devices of Grav "lm, ~ Pn"-'-,r, an,! severs the eontinuitv of Mm eire,d,. ' spritm ,, ne I," “m ! ,7 “T'"1? in isochronous eon, no, tio. so ,,, I , 1 .tl"!.vll""',"i« sl,m,g pendulum „t the receiving stu . . . m . * >"> roeeivi,e"'i,!sLo^r'S f'0 'm""W of col"1,''L'tillS the transmitting and such s mi, m ? S ,T the hatterv at in ' ,, ,d o , kS m""U !'l,li,rlt-vl,s ti|u other stations, and he thrown ! "ul ,,llt "-11110111 lire, iking the circuit; also, in placing each receiving "istrument 111 a derived circuit from the main line hv the use , £ ?! ?' ?? . ' 'hiul,]l1!i1'° l>»Kl'lce !1 slairpness in the waves of eavrent which, on long lines, would he apt to ran together and produce a constant closing of the circuit without any breaks. ® Tn figs. I and 2 are shown tho transmitting instruments ; both are alike except that the spring pendulum 2 in lig. [ is longer and beats a lessor min,! bor of times than the pendulum 2' in lig. 2. 1 lie pendulum is secured to r lie lever of the sounder magnet A, which is operated by a local battery L B‘ mid key K. 'I’liis lever it strikes upon the pillar*-!, ami has an upper limitin" screw 0 ; also a retraetihle spring 8. 0 . !> 11 P'lhir to which is secured tin- isoi-hroimusly viluat inir contact spring 7, which rests against theeoiilael limiting screw!,', when in a state of rest placing the battery in eirenit. no play, and t lie lever x striking against the resonant bridge 12, sets the pendulum 151 vibrating, and, being adjusted, make the same number of vibrations per second as 2; in lig. I it will continue to vibrate as long as 2 is kept vibrating, ecaru two isoelmmously vibrating contact springs connected to the sounder if. and local battery L I?', and are so connected to the pendulum 13 flint it touches neither when in a slate of rest. Tlte apparatus' shown in lig. -t is the same as in lig. !i, except its pendu¬ lum vibrates a greater number of times per second and is adjusted to 2' of fig. 2. In figure !l is shown a larger view of the receiving instrument. In lig. 0 is shown the method of connecting tho receiving and transmit¬ ting instrmnoms at end uml way stations. 1 hiM/i. Tlio method shown for producing sharpness mid Mie vibrations, by pinning the receiving instrument in it derived circuit and resistance, and shunting tlio sumo with u .condenser.' Eighth. Tlio mol hod shown for trnnsi from slulion A, without passing through t station. Signed by mo this 22d day You tire hereby notified that, application 1ms boon made to this oilier for Loiters Patent for Impts. in Harmonic Telegraphs with which tlio invention described, 1st, prohubldiluiui in your caveat, tiled on the 2d day of Decem¬ ber, lS7d, apparently interferes, and that said application has been deposited in tlio conlidontial archives of the otlice under provisions of section -1,002 of the Devised Statutes of the United States, which section reads as follows : WmM. Dim ttioiiMitiiil Oitrlir liiimlruil ami eighty-one, ami of tile Inti purtdetme of tho United Status Hie otto hundred and fifth. H. M. MARBLE, Commissioner (Casu No. 7:1.) To tho Honomhlo Commissioner or Patents of the United Status: The petition of 'I’ltonias A. Edison of Newark, in the County of Esso and State of New dorse, v, respectfully represents, That your pelioner has invented a certain new and useful improvemot in Multiplex Telegraphs, and that lie is now engaged in making experiment for tlie purpose of perfecting the same preparatory to an application ft Letters Patent therefor. Ho therefore prays that the annexed description of his said inventio may be liietl as a Caveat in the confidential archives of tho Patent Oilici agreeably to the Act of Congress in flint casu made and provided : he hat ing paid ten dollars into the Treasury of the United States, and otherwi; complied with t lie requirements of the said Act. llespectfnllv vein's, THOMAS A. EDISON. New York, January lii, 1S70. UNITED STATES OP AMERICA. City, Count u and Statu of JYew York : On this thirteenth day of January, in the year one thousand eighthm: drod and seventy-six, before the subscriber, a Notary Public in and for sai State, personally appeared the within named Thomas A. Edison and mad solemn oath that lie verily believes himself to be the original and first invet tor of the within described Improvement in Multiplex Telegraphs and tint lie does not know and does not believe that tho same was ever before know ir used t and that he is a citizen of the United Status, and a resident of Nov irk, N. J. THOMAS A. EDISON. Sworn before me, the day and year above written. I-I. M. llAIGII, (00), Notary Public, N. Yr. Co. [L. S.] it tin.' shaft /should revolve wiili gwit regularity : ntod- liNieient. in fart Ihoiitlt or fitli wheel of a train of goar- a fy revolves with snlheient regularity to serve the heels half of theeirrninferenee of each being inlaid with nee, and the wheels are so arranged that the insulating •heel is immediately opposite the nietnllie or contact 1 wheel. Those wheels are rapidly rotated by the electric a two contact points connected to /!•. and b of the reeds and M. the reeds g and //. being both connected to the vlien ti lth keys are closed and both roc. Is are vibrating arc sent out. bn! not <1/ thr saw /hut' : while the point the metallic portion of the wheel it. the reed h transmits it the rate of l i t per second, while no waves from g can it. is resting upon the insulating surface of wheel 4, lint rds llie position of c and d change d passing on the mo- teel 1 1. (a and li are commoted to line.) and allowing the aves at the rale of !1G per second. elutions of the wheels a and li, is extremely rapid tho transmission of timid “bonis" composed of dilferent uui. i ne met nod ol recording Homan or other letters shown in Jig. 9 Ir series of vihrating'reeds. Signed l)v mo tills I3lli day ) of January, I S7C. ( THOMAS A, EDISON Witnesses? I{. M. IL\ ton, Will. C. OSTIIAXDUII. 1870. (No. 78.) No. Thomas A. Edison, Assor to Western Union Telegraph Company, of Newark, County of Essex, State of New Jersey. Multiplex Tolgraphs. Telephonic, department op the interior, ' Office. To alt persons to whom these ie presents shall come, Orecliny : This is to certify that the annexed is a tnio copy from the files of tills ce of the Pile Wrapper Contents and Drawing, in tin* matter of tin; Caveat Thomas A. Edison, Assor. to Western Union Telegraph Company, filed •nary 14th, 1870, for Multiplex Telegraphs. In testimony whereof, I, E. M. Mabbms, Commissioner of Patents, have eaased tile seal of the Patent Oilieo to he here- [t. s.] unto niiixud this twenty-fourth day of November, in tile year or onr Lord one thousand eight hundred and eighty, anil of the Independence of the United States the ono hundred and fifth. E. M. MARBLE. Commissioner. (Case 74.) To the Honorable Commissioner of Patents of the United States : Thu Petition of Thomas A. Eniso.v, of Newark, in the County of Essex, and State of New Jersey, respectfully represents: That your petitioner has invented a certain now and useful Improve¬ ment in Multiplex Telegraphs, and that, he is now engaged in making experi- mens for the purpose of perfecting the same, preparatory to his application for Letters Patent therefor. He therefore prays that the annexed disruption of his said invention may be tiled as a Caveat in the confidential nrchieves of the Patent Oftice, agreeably to tlio Act of Congress in that case made and provided; lie hav¬ ing paid ten dollars into the Treasury of the United Strates, and otherwise complied with the requirements of the said Act. Respectfully yours, THOMAS A EDISON. New York, January 13, 1870. UNITED STATES OF AMERICA. City, County and Stale of iVeio York : On this thirteenth day of January, in tlio year one thousand eight hun¬ dred and seventy-six, before the subscriber, a Notary Public, in and for said State, personally appeared the within named Thomas A. Edison, and made solemn oath that he verily believes himself to be the original and iirst inven¬ tor of the within described Improvement in Multiplex Telegraphs, and