Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 365
in-ating in a small piston which can move within the tube D, filledwith mercury. The diameter of the piston is less than that of thetube, so that when the piston moves down by the motion of thecarbon-holder, the mercury passes from one side to the other ofthe piston by the narrow annular space.… … Fig. 202. THE SCHUCKERT ARC LAMP. 345 produce the separation of the carbons, and to counterbalancethe effect resulting from the weight of the positive carbon-holder, as in Archereaus regulator. When at rest the carbons are in contact. At the momentwhen the current passes, the solenoid attracts the…
Electrical engineering
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