Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 126
Page 7 Section 5 Multiplex System 263-C MOUNTING SCRLWS … Fig. 9 24. The third function of the release magnets is the operation of the mechanicalstart unit. This unit, which is shown in Figures 8 and 9, is mounted directly above theright hand release arm. A pawl on the start unit normally engages the striking arm onthe typewheel and thus prevents the…
Telegraph
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