Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 219
tewires, and by aid of the plumbers torch(see fig. 91) the couplings are heatedand soldered so that a solid metallicjunction is formed. Then the upper halfshell is bolted to the lower one, andhot bitumen poured in through the open-ing provided for this purpose at the top.Fig. 92 represents the kind… … POCKET BLOW TOUCHFig. 01.
Electrical engineering
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