Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 509
hof the arc. Figure 294 is a perspective view of the mechanism of thesingle lamp which shows the cut-out or short-circuiting devices,by which the lamp may be instantly switched out of circuitwhen it is desired to replace the consumed carbons or to per-form any other necessary operation upon it. 488… … Fig. 295. the casing above, so that no portion whatever of the lampwhich is in electrical connection with tlie circuit is exposed oraccessible. This form of frame is employed either for duplexor for single lamps, the same as the form shown in figure 289, THE WESTON ARC LAMP. 489
Electrical engineering
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