Telephone-Transmitter.
Description:
Patent for a telephone-transmitter "with a diaphragm and carbon button carried thereby, of a spring-supported flaring conical carbon-cell provided with a flange covered with soft material and resting on the carbon button carried by the diaphragm, the carbon-cell being filled with granulated carbon resting in contact with the carbon button" (lines 13-19). This is meant to optimize the volume of sound being transmitted.
Date:
October 20, 1896
Creator:
Alexander, Horace C.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department