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A dictionary of electrical words, terms and phrases (1896)

Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 116

An illustration from A dictionary of electrical words, terms and phrases, 1896, leaf 116 — 13 S. QmtroUtd Clock. Clo.l 104 [Clo. In a system of time-telegraphy, the controllingclock is called the master clock, and the con-trolled clocks, the secondary clocks. Secondary clocks are generally mere dials, con- … Fig. I3Q. Mechanism of Secondary Clock. taining step-by-step niove?nents, 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

Electricity · Electrical engineering

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