A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 311
nged at J, is pressed upwardby a spring. The free end of this lever termi-nates in two steps, 1 and 2. A vertical lever, pro- Key.] 301 [Key. vided with an insulating handle, is jointed at J,and has at C, a projecting metallic tongue thatengages in the upper step when the lever H, isvertical, and… … Fig. 324. Webbs Discharge Key. nected from either of them; but, when it rests onthe upper step, it is in contact with the lowercontact. When the lever H, is so moved as to have theprojection C, away from both steps, the lever L,is pressed by its spring against the upper contact. The battery…
Electricity · Electrical engineering
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