Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 372
re is motion or rest in these carbon-holders. This result is obtained by means of a large wheel, R,which carries on its axle the pulley C, on which is wound thechain supporting the lower carbon-holder. The axle of the THE BURGIN ARC LAMP. 351 wheel rests on a piece of iron, A A, fixed to a jointed… … Fig. 205. the wheel from turning when the latter is at the proper height,that is to say, when the armature A is at its greatest approxi-mation to the electro-magnet E; but when, in consequence ofthe weakening of the current, this armature is at a greater dis-tance, the wheel, by dropping with the…
Electrical engineering
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