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 445
ernate pieces come on opposite sides of the thinnededge, supporting it. Copper joints to be brazed are cleaned by covering the parts with astrong brine made from salt and water; they are then heated to a cherryred and plunged into clean fresh water, which also has the effect of an-nealing the… … Fig. 4,468.—Quickly constructed furnace for brazing; view showing broken casting in positionready for brazing. prepared portions of the article to be jointed are placed together andfastened, if for a pipe, by being bound with iron wire. The over lappingedges are closed by means of a mallet on a…
Electrical engineering
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