Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 438
tomatic feeding lamp thecarbons are moved together automatically as they are con-sumed, so that the length of the gap is maintained constantand consequently the distribution of light is continuous. A simple means for producing automatic feeding is depictedin Fig. 381 and embodies the principle… … 381.—Diagram of Connections of an Automatic Feed Differential ArcLamp.—Clutch Type Pattern. supply line by the lamp terminal binding posts 3 and 4. Theupper or positive rod, E, passes through a clutch, H, supportedby the horizontal brass lever, DH, pivoted at C, and alsofastened to an iron core,…
Electricity · Magnetism
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