Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 681
here are stations, and all these wires run through allthe stations, each wire being tapped at each station and not cut. At eachstation there is one ordinary telephone instrument consisting of the usual Italking apparatus, magneto-generators and polarized bells. Below each Itelephone there is an… … Fig. 45. Intercommunicating System, with Magneto Signaling Gener-ators and Polarized Bells. With all the levers in this position, a person at any station can call upany other station by moving the switch lever to the button connected withthe individual line of the station desired, and turning the…
Electrical engineering
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