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 422
Hard German Silver Solders These solders, sometimes called steel solders, contain a large propor-tion of nickel and are very strong. They require a very high heat formelting, and usually cannot be fused without the aid of a bellows orblast. No. 1. Copper, 35 parts; zinc, 56.5 parts; nickel, 9.5… … FlGS. 4,431 to 4,433.—Round wiped joint; preparing the pipe ends. These ends to be unitedare sawed squarely across, to make the joints true with the pipe. It is usual to prepare thefemale end first, as shown in fig. 4,431. The end is flared or belled out with a turnpin,which is a taper boxwood…
Electrical engineering
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