[N134025], Technical Note, Thomas Alva Edison, October 24th, 1884


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[N134025], Technical Note, Thomas Alva Edison, October 24th, 1884

Editor's Notes

Consider selecting some of these pages by TAE on telephone. P. 25 "try square diaphragm in all the telephone experiments." p. 27 "Try following: galena caleopyrite phosphide iron, conducting sulphide, etc. [telephone]. More transmitters. p. 33: plate which is insulated covered with granulated carbon held on by adhesive mixture. Talk to square plate." p. 35 "Grind up conducting lampblack with oil etc see if can make a conducting central transmitting liquid". Then some lamp filaments. p. 41 dashpot---huh?. p. 49 Telephone: mixing anthracite carbon with rubber, other compounds. p. 51 "Mayer to give 1/4 @ 1/2 inch spark try this against regular---think talking be clearer [diagram of several flat plates]; p. 53 "Carbonize some cloth at lamp factory various kinds for telephone electrodes. p. 57 hand-drawn map of Europe. One more page of telephone then misc junk.




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Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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