Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 222
a Gamewell repeater will be under-stood by a consideration of Fig. 12, which shows the re-peating arrangement and one box-circuit magnet withauxiliary devices in the normal condition. The weight-driven transmitting cyHnder D is mounted eccentrically MUNICIPAL TELEGRAPHS 207 on shaft 5 so as to move… … Fig. 12. many contacts may be provided as there are gong andsignal-box circuits in the fire-alarm telegraph system.The transmitting cylinder makes one complete revolutionevery time a box circuit is opened. Shafts E, F, G, P andQ extend to the right in front of other repeater magnets,and carry…
Telegraph
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