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
ontact 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 terminals are connected with thecondenser terminals when the lever L, is touchingthe lower contact, but when the… … 12 3 4, Fig. 325. Spragucs Double-Contact Key. Spragues double-contact key is shown in Fig.325. On depressing K, the contacts c, c, are firstclosed and afterwards contacts at c, c. Metallic pieces, I, 2, 3 and 4, serve to make contacts withapparatus used in connection with the key. The battery…
Electricity · Electrical engineering
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