Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 103
apable of performing theselecting operations required to produce the proper perforations in the tape. 5. Directly beneath the combs are six bars, or loops, extending transversely to the keylevers. When a key is depressed the comb attached to that key lever operates certainof these loops. Figure 3… … LOOP #5LOOP***LOOP*3LOOP#2LOOP* I
Telegraph
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