Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 511
Fig. 296. 490 THE ELECTRIC LIGHT. and the same feeding mechanism may be used. Figure 296shows the manner in which the inner frame is lowered for thepurpose of replacing the carbon. … Fig. 297. More recently, ^Mr. Weston devised a new form of regulat-ing apparatus, in which the feeding of the carbons is controlledby a brake-wheel, to the axis of which the upper carbon THE WESTON ARC LAMP. 491 carrier is attached either by a cord and pulley, or by arack and pinion movement, so…
Electrical engineering
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