Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 179
ion 5-A Adjustments Multiplex System 263-C 19. Interference Plates. When the trip rods are unoperated the adjusting screwsin the shaft levers shall be regulated so that there-is a .020 inch clearance between theend of each trip rod and the adjusting screw in the shaft lever (Fig. 35). 20. When this… … Fig. 35 21. Drum Switch. Figure 36 shows the drum switch mounted on the selector. Thesmall casting, which carries the lever controlling the contacts, may be rocked by looseningone adjusting screw and tightening the other and thus the contact gap can be varied.Loosening the lower screw and…
Telegraph
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