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 451
ition, and overlap when in either slanting, upright, oroverhead positions. It is not necessary to soil the sides of the SOLDERING AND BRAZING 3,105 seams, because the lead will flow only where it is directed by theflame jet. No fluxes are necessary. The details of preparation of butt and lap seams… … FlG. 4,476.—Process of burning a butt seam in two sheets of lead. For flat butt burning the end of a stick* of lead should be held onthe seam so as to be melted at the same time as the other lead, as shownin fig. 4,476. Before beginning to burn the seam, a stick of lead should be held inthe hand…
Electrical engineering
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