American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 294
branch office circuit at x. Just as this occurs, however, a localcircuit is formed via the tongue and lever of the repeating transmitter and a smallportion of the battery b, to and through the pole-changer magnet, keeping the pole-changer closed; this forming the automatic feature of the device.… … DOWNER QUADRUPLEX—SHORT-WIRE REPEATERS. tery B. The Downer arrangement is generally employed on the Western UnionCompanys lines for short circuits. THE GARDANIER QUADRUPLEX SHORT WIRE REPEATER. A modification of this arrangement, known as the Gardanier arrangement, shownin Fig. 188, was much used…
Telegraph
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