Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 200
actical and in the 3-A Printer which is described in this sectionthe selecting and printing units have been consolidated into a single machine. Thisprinter mechanically performs the greater part of its function and the printing is doneby type bars. For the sake of convenience part of the relays,… … ARMATURE TRIGGERFig. 2 2. Figure 2 shows the complete selector unit in perspective. It consists principallyof five selector magnets with their armatures, five selector bars, the selector bar springs,a reset magnet and a selector unit comb. The five selector bars are normally held towardthe left of…
Telegraph
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