A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 630
ppers make contact withmercury cups which can be raised or lowered bymeans of a nut and screw as represented in Fig.574, and indicated in diagram 575. The con-struction of the adjustable mercury cups and thestretching lever were copied from Dr. Max Wiensmagnetic interrupter (Wiedem. Ann. 1891… … S7&-
Electricity · Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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