The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 384
Fig. 352.—Jointing Clamp three sizes of sleeves, the sleeve is given four turns of twist for thetwo smaller sizes and five for the largest, when straight-throughjoints are being made. Fig. 353 shows a side and end view ofthe 100-lb. copper sleeve and also the joint completed. Terminating with… … Fig. 353.—Copper Sleeve Joint for 100-lb. Copper Wire doubled back on itself, the loop thus formed being takenround the bottom groove of the insulator and then boundtightly and closely intwelve turns of the bight (twenty-fourturns of wire) round the main-line wire and the end which hasbeen doubled…
Telephone
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