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 459
ot be in the fuel orfire? Ans. Lead, sulphur, brass or bronze. WELDING 3,113 Systems of Welding,—Welding ft and has long been a matterof great practical importance, chiefly in the manufacture ofiron and steel, and of the various tools, utensils and implementsof those metals. Iron has the valuable… … Fig. 4,485.—Making a scarf for a scarf weld. To do this, the upset end is thinned down,generally with the peen of the hammer, drawing it out thin at the point and crowding themetal together at the stock by drawing the hammer as shown at M. The faces to bewelded should be rounded as shown at S, so…
Electrical engineering
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