The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 181
dinary ring being short-circuitedwhen the plug is passing through the socket of the jack. Fig.178 is a section of this plug, and it shows how the conductorsT, R, and s of the 3-way cord are connected to the plug. Connecting Cords.—The flexible connections required forthe connecting plugs have… … Fig. 178.— Full size braided coverings, and so cause short circuits. The point ofgreatest trouble in this respect is near the base of the plug,where the bending is sharpest and most frequent, and theliability to such faults is greatly augmented by the actionof the operators pressing on the cord…
Telephone
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
