Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 105
Fig. 7 … FEED ROLL.FEED PIN FEED RATCHET p&«— BACK SPACED LEVERI I I—STAR WHEELPINION Fig. 8 9. The travel of the tape for each operation of the punch hammer is accuratelylimited by a twelve toothed star wheel, attached to the lower end of the feed roll shaft,against the teeth of which the roller of an…
Telegraph
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