Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 90
, is also mountedon the punch block as shown in Figure 5. Page 3 Section 4 Multiplex System 263-C 11. When properly assembled in the perforator the punches are located directly abovethe punch hammer. 12. This hammer is rigidly mounted on the punch hammer shaft, which in turn isdirectly connected to… … PUNCH SPRINGADJUSTING Fig. 5 13. When the operating magnet is energized the shaft is rotated, thus raising theface, of the punch hammer so that it engages the feed hole punch and the selecting fingerswhich have been moved forward by the selecting bars, and forces them upward. Thisdrives the punches…
Telegraph
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