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 420
Fig. 4,425.—Soldering pot. Solder for silver chains: No. 1. Fine silver, 74 parts; copper,24 parts; orpiment, 2 parts. No. 2. Fine silver, 40 parts; orpiment,20 parts; copper, 40 parts. … Fig. 4,426.—Ladle for removing solder from soldering pot and for pouring same in makingwipe joints, etc. Resoldering silver solders: These silver solders are for resolderingparts already soldered. No. 1. Silver, 3 parts; copper, 2 parts; zinc,1 part. No. 2. Silver, 1 part; brass, 1 part; or,…
Electrical engineering
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