Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 64
and a thin film of oil placed on all bearings surfaces.Ball bearings shall be packed with a good quality non-fluid oil such as the New Yorkand New Jersey Lubricant Companys No. K-00 Special Non-Fluid Oil. The collectorring brushes on the distributor corrector shall be kept clean and free in their… … Fig. 22 This adjustment is made with the aid of a thickness gauge, while the fork is at rest;Note that the driving contact adjustment may be from .010 to .015 inch, but that bothgaps must be the same. If they are, the mil-ammeter shown in Figure 3, known as thefork meter, will read zero when the…
Telegraph
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