Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 522
hat used with the headlight of alocomotive, the object of which is to project all the rays of lightproceeding from the lamp in a direction parallel to each other,so as to form a cylindrical beam of light, which may be thrownupon any required spot even at a considerable distance. Inorder that the… … Fig, 305. 502 THE ELECTRIC LIGHT. normal rate of consumption, the positive carbon being con-sumed, roughly speaking, about twice as fast as the nega-tive. This double feeding is effected by simple mechanism,whereby the mechanical movement of the regulator is com-municated to both carbon-holders in…
Electrical engineering
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