American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 192
ereby opening the transmitter t, and, consequently, the eastern circuit at^, but that,as already said, the lever of em is against lever /, holding it on its front stop and thuskeeping the local circuit of t closed. When the East again closes his key, relay k alsocloses, consequently, so does t;… … 157 II f>^ ^ 158 AMERICAN TELEGRAPHY. the western circuit is closed at x% the lever / is held forward by its armature. Ill this way the function of the repeater in keeping closed the opposite trans-mitter, and virtually also the circuit which is being repeated into, is performed. Should the West…
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-543-360.webp)
