American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 379
ously. (The vibrations occur at the rate of about 1,500, perminute.) At the same time the tin-foil at the transmitter and the paper at the re-ceiver are caused to move forward at a practically equal rate of speed. Since currentwill only flow in the circuit c when the needle of the transmitter is… … and paper, respectively, it results that there will be reproduced on the chemical papera fac-simile of the characters placed on the tin-foil. In Fig. 242^ the transmitter t and receiver e are shown as, in practice, they arecombined on one base, h is a switch which is normally in a middle position…
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-855-554.webp)
![An illustration from The Telegrapher [microform] (1864)](https://img.insideoutlibrary.com/img/200/ia-telegrapher05nati-104-57.webp)
