A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 64
to two lines running east and west. Various connections are made by the insertionof plug keys in the various openings. Board, Switch, Trunking —A switchboard in which a few subscribers onlyare connected with the operator, thus enablinghim to obtain any other subscriber by meansof trunk wires… … Fig. 55- TelegraphicSwitchboard. Boat, Submarine Electric capable of being propelled and steered whileentirely under water. The motive power of such boats is generally electricity. The requisite buoyancy is obtainedby means of an air chamber. Artificial ventila-tion is maintained, the fresh air…
Electricity · Electrical engineering
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