Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 181
Fig. 38 24. Striker Shaft Spring. The tension of the striker shaft spring shall be regulatedby means of the adjusting screw so that a pull of four ounces on the front of the centeringwheel will be required to start to move the typewheel forward after the play in the bear-ings has been taken up.… … TUEN PLUNGEE /ZOO WITH WRENQ±j £ turn excessFig. 39 25. Drum Magnet. To adjust the drum travel, put the printer on a set, turn on thepower and hold the typewheel so that it cannot strike, then trip one of the selecting mag-nets. This will cause the drum magnet to operate. Loosen the lock nut and…
Telegraph
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