Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 28
s spring. Exceptwhen the bars are all in their normal positions there is a continuous slot directly in frontof some one of 31 selecting levers, only four of which are shown in Figure 19. Since thecombination set up when all the bars are in their normal positions is not used for selectinga character… … Fig. 18 one of the keys of an ordinary typewriter, as shown for the letter D, or has mountedon it a contact, as shown for the line feed magnet; that is, a magnet mounted so thatwhen it operates it pulls the lever which rotates the platen of the typewriter. 46. If we now send a combination of…
Telegraph
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