. American telephone practice . FIG. JOINT. tention. The old style of joint, and one which gives satisfactionfor iron wire, is shown in Fig. 583. This is known as the WesternUnion joint, and is made by placing the two ends side by side andclamping them with a hand vise or with a heavy pair of pliers. 802 AMERICAN TELEPHONE PRACTICE. With another pair of pliers, the free end of each wire is twistedtightly around the other wire, as shown. This is used exclusivelyfor joining iron wires. Another method of joining wires, known as the Mclntyre sleevejoint, is shown in Fig. 584, this bein
. American telephone practice . FIG. JOINT. tention. The old style of joint, and one which gives satisfactionfor iron wire, is shown in Fig. 583. This is known as the WesternUnion joint, and is made by placing the two ends side by side andclamping them with a hand vise or with a heavy pair of pliers. 802 AMERICAN TELEPHONE PRACTICE. With another pair of pliers, the free end of each wire is twistedtightly around the other wire, as shown. This is used exclusivelyfor joining iron wires. Another method of joining wires, known as the Mclntyre sleevejoint, is shown in Fig. 584, this being now almost universally usedin joining copper wire. The sleeve for making this joint consists. FIG. 588.—TRANSPOSITION. of two copper tubes soldered together and having a bore corres-ponding to the sizes of the wire to be joined. The ends of the wireare passed in opposite directions through these tubes and are thengrasped at each end with a special tool for the purpose, and giventhree distinct twists. This joint is now widely used in practice andis very convenient because the use of solder is not required in orderto make it perfect. In Fig. 585 is shown the method of dead-ending a copper wirewith a half length of Mclntyre sleeve. Still another connector, not so well known, is the Lillie joint,this being shown in Fig. 586. The connector in this consists of a dB FIG. 589.—POLE-TRANSPOSITION. sheet of copper curved longitudinally in opposite directions. Thewires are slipped in each curve of the strip and twisted in oppositedirections, as in the Mclntyre joint. This joint has not come intosuch extensive use as the Mclntyre sleeve, but should prove 587 shows how t
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