Edison's Eleotro-Chemical Telephone

1879 Scientific American  
J titutifit �mtrita1J. DUO... BLE01'BCHDJDC&L ftLBl'HOR I cated appearance, in consequence of the transmitting carbon Mr. Edison has recently improved his carbon telephone so telephone being fixed in front of, and concentric with it. It much that in conjunction with a magnetic receiver U far the transmitter and call bell apparatus were removed, the surpasses for power and clearness of articulation every other system of telephone tha� baa been introduced. As long. however, as there was in
more » ... there was in connection with �he instrument no more powerful receiver than the Bell tele phone or inatruments of similar principle, the carbon tele· phone, although poBSe88 ing many points of superiority over other systems, was limited in its power to the capabilities of the receiver with which it was connected, and until quite recently no receiving telephone had been introduced which would develop or do justice to the power of the carbon trans· mitter. Mr. Edison has now applied, with remarkable success, the principle of the electro·motograph to the construction of a telephone receiver, which, on account of its extraordinary power and perfection, must before long supersede the feeble instruments of other systems, and seo.lre to itself a great commercial future. Noone who has heard this new telephone can fail to have been astonished at its clear, articulate, and loud tones; it might appropriately be called .. The Shouting Telephone," for its .. voice" is louder than that of any ordi· nary speaker, and we have failed to distinguish any diller·
doi:10.1038/scientificamerican04261879-260 fatcat:j2n5fwcoqze4fazv7yajzy3rcy