American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 194
. At thesame instant that the western circuit opens at x, the circuit which includes the relayr and battery mb is closed via the lever of transmitter t through the rheotat eIi. Theresistance of the rheostat is adjusted so that it equals the resistance of the western cir-cuit. As this transposition… … l6o AMERICAN TELEGRAPHY. It will be noticed that this automatic method of keeping the opposite transmitterclosed is exclusively electrical. It need hardly be said that when the West wishes tosend to the East the foregoing action is reversed. An advantage held by this repeater over the Milliken is…
Telegraph
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