Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 207
735. TELEPHONE TRANS-MITTER. —A, A, thin irondiaphragm ; B, India rubber in con-tact with diaphragm and the ivorydisc, C ; D, platinum foil betweentheivorydisc,C,and the carbon disc,E; G, disc and screw for adjust-ment of carbon contact; H, ad-justing screw for diaphragm con-tact. … 736. TELEPHONE RECEIVER.—A central magnet, with a coil of fine insulated wire around theend, next the vibrating plate or diaphragm. Thevariations in the electrical current produce varia-tions in the intensity of the magnet, which set upvibrations of sound in the iron diaphragm.
Mechanical movements
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