Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 428
e in its resistance, a larger pro-portion of current be diverted through the fine wire circuit, the THE BRUSH ARC LAMP. 407 attractive force of the electro-magnet, T^ would be increased, andits armature. A, which is attached to the pivoted lever, B, wouldbe attracted, the contact pieces, M and M^,… … Fig. 249. dependent of either the fine or the thick wire solenoids, theirmagnetic action ceases, and either the upper carbon is dropped,or, if it is burnt out, or from any other cause, the arc is notestablished, the contact pieces, MandM^, are held firmly to-gether by the attraction of the magnet,…
Electrical engineering
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