Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 290
stration shows the most of the mechanism to be identicalwith that of the traveling crane. 2,944 HAWKINS ELECTRICITY One end of the bridge is pivoted at P and at the other end, a sectionof the circular gantry is shown. In construction the circular gantry may continue all the way aroundor only for a… … Fig. 4,220.—Niles crane construction: Standard grab bucket trolley suitable for operationwith a two rope grab bucket, one rope being attached to bail of bucket and the otherattached to the opening mechanism. The trolley framing consists of heavy steel channelssecurely riveted together, making a…
Electrical engineering
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