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 431
ly called solderingor bit consists of a large piece of copper, drawn toa point or edge and fastened to an iron rod having a woodenhandle as shown in fig, 4,445. There are a variety of bit whichmay be classed 1. With respect to their shape, or construction as a. Pointed; b. Grooved; c. Hatchet; d.… … Figs. 4,449 and 4,450.—Kageman self-heating gas soldering bit for bench work. Fig. 4,449,single torch; fig. 4,450, double torch. Any shape or weight of copper point for any classof work may be easily substituted by means of a set screw I. One end of a flexible tubingis attached to the nozzle or…
Electrical engineering
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