Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 247
ontinued motion of the shift solenoid plunger rotates the shiftshaft and all its attachments about its bearings, which are fixed in the printer sideframes. The carriage is supported at the rear on two ball bearings, carried in a retainer,which run in shaped grooves on the upper and lower ball… … Page 15 Section 5-C Multiplex System 263-C
Telegraph
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