Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 263
ents of Electricity. The uninitiated, listeningto its clicks for the first time, naively expresses surprise that they•can make nothino; of them. This set of apparatus, installedin thousands of small othces all over the continent, and duplicatedmany times in the large ofhces, is shown in outline in… … coming in from the pole in the street. Passing through the coilsof the relays and the keys, it makes its exit through the officewindow, to resume its place on th^ poles which support it to theterminus of the hue. Examining Fig. 2 and comparing it with the bell-ringingdevice shown in Fig. 1, we find…
Electrical engineering
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