dulatory current." Substantially and, strange as it may appear, has been repeatedly transmitting diaphragm, to whose back a pencil or rod the claim is made that speech in all electric telephones sustained on such a basis by the courts. The inventor of carbon is attached, which projects from its… … current of this nature. A " make and break " instrument, the image of the ball is seen to current, it is said by the Bell advocates,!can- jump back and forth from the pencil elec- THE BONTA TELEPHONE. not of'itself transmit .speech. The logical trode, as it opens or breaks the circuit contin-…
Patented · Contained · Apparatus · Patents · Scientific American · Professor morse · Meteoric iron · Liquid fuel · American supplement · Fish killer · Sniffen company · Cast Iron · Address munn · Large number
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-135-102.webp)
