Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 122
Fig. 4 Page 3 Section 5 Multiplex System 263-C 10. In the center of the drum or hollow shaft about which the slotted discs move isa vertical shaft carrying a light typewheel. This shaft is kept under tension by a spring,wound at required intervals by a small motor. Projecting at right angles from… … MOTOR CONTACTS Fig. 5 11. When one or more selecting relays have been actuated by a combination of im-pulses representing a letter transmitted from the distant station, the corresponding se-lecting magnets move their discs into the selected position. If the release magnets benow energized, the…
Telegraph
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