A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 114
Fig. 139* Mechanism of Secondary Clock. taining step-by-step movements, for moving thehour, minute and second hands, as shown inFig. 139. In Spelliers clock, a series of armatures H,Fig. 140, mounted on the circumference of a JA … Fig. 140. Spelliers Electric Clock. wheel, connected with the escapement wheel,pass successively, with a step-by-step movement,over the poles of electro-magnets. On the com-pletion of the circuit, they are attracted towardsthe magnet, and on the breaking of the circuitthey are drawn away by the…
Electricity · Electrical engineering
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