Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 484
carbon rod A is prevented from descending by apin, a, resting against the end of a bell crank lever e d^ which isheld forcibly against it by a spring, S. The other carbon rod, B,however, is free to descend. The arc is therefore produced onthis side, the other carbon being held at a slight distance,… … Fig. 2*r9. allowing carbon rod A to slip down. The carbons on this side (A)now come in contact, and the arc at B dies out. The regulatornow causes the separation between this new set of carbons, thecarbon rod B remaining suspended by the pin h. The switchand the automatic cut-out just described are…
Electrical engineering
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