The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 386
Fig. 356.—Single Terminating of 100-lb. Copper Wire back so as to form a loop of about 2 inches diameter andfinished off as with the bronze wire joint, a lf-inch or 2-inchsleeve and a packing tube being used to complete the joint,which is shown in Fig. 356.Packing Tubes.—These are soft copper… … of 100-lb. Copper Wire when two different sized wires are being jointed to slip over theend of the smaller wire to bring it up to the size of the largerone before inserting in the jointing sleeve. Fig. 357 shows a double termination with copper wire whichis similar to two of the single copper…
Telephone
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