Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 88
s key represents the signal which restores the printer to the lower case.The key marked CAR RET represents the signal which causes the printer carriage toreturn to such a position that the printing will be started at the left hand margin of thepaper, and the one marked LINE FEED represents the… … Fig. 2 4. The key levers are pivoted at the inner end to the frame and held up against astop by spiral springs, which are adjustable. 5. Directly under, and at right angles to the key levers, are five selecting bars andone contact bar. The five selecting bars determine which of the five punches are…
Telegraph
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