Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 226
Fig. 13. MUNICIPAL TELEGRAPHS 211 ink marks or perforations in paper tapes. Fig. 14 showsa punching register, paper take-up reel and an automatictime and date stamp which prints on the register tape theexact time that alarms are received. With systems having manual central stations and em-ploying… … Fig. 14. cuits and joker circuits. The gong circuits terminateat apparatus houses in electromechanical gongs and some-times also in indicators, as described above. The jokercircuits terminate in single-stroke electric bells, or tappers,having 5- or 6-inch gongs, and also frequently in…
Telegraph
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