Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 178
the trip rods will be retarded, due to the pressure of these twosprings against the reset armature. 17. Fourth Pulse Contacts. The fourth pulse contacts shall be bent so that when thefourth pulse trip rod is in its unoperated position there is about 1/16 inch clearancebetween the inner contact… … Fig. 33 18. . Reset Contacts When the reset plunger is in its operated position there shallbe about a .030 inch clearance between the fibre block and the adjustable bracket on theyoke. The contact pressure shall be two and one-half ounces measured on the fibreblock of the rear contact spring (Fig.…
Telegraph
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