Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 66
Fig. 25 FACE PLATE … Fig. 26 DISTRIBUTOR CORRECTOR ADJUSTMENTS (FIG. 27) 8. Release the jockey roller, also the pawl, from the ratchet wheel. Revolve theflywheel in one direction and rotate the distributor brush shaft in the other direction-tomake certain that the gears run entirely free from any mechanical friction…
Telegraph
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