Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 483
tracted, it presses this flatspring against a contact connected with the positive pole, thusshort circuiting the lamp. The same mechanism is also depended upon to short-circuitthe lamp when the carbons are consumed. For this purpose 462 IHE ELECTRIC LIGHT. the carbon rod is provided with a small… … Fig. 278. ature to tilt, with the effect of short circuiting the lamp in thesame way as before. The regulating mechanism of the doublelamp (fig. 278) embodies the same principles of construction.The main difference is that m this case there are two escapement THE HOCKHAUSEN ARC LAMP. 463…
Electrical engineering
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