A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 113
Fig. 136. Climber andStraps. Electric clocks may be divided into threeclasses, viz.: (1.) Those in which the works are moved en-tirely or partially by the electric current. (2.) Those which are controlled or regulatedby the electric current. … Fig. 137. ControllingClock. (3.) Those which are merely wound by thecurrent. A clock moving independently of electric poweris prevented from gain-ing or losing time, bymeans of a slight re-tardation or accelerationelectrically imparted.The entire motion ofthe balance wheel issometimes imparted…
Electricity · Electrical engineering
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