The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 237
extended description of thisarrangement, which was devised by H. M. Crane, will be givenin the next chapter. Stones System.—This system was invented by J. S. Stone 212 PRACTICAL TELEPHONE HANDBOOK in 1893, and is now much used, especially by the independenttelephone companies in America. As shown… … Line 1 Station. A Fig. 237 in a shunt between the two conductors of the connecting cords,retardation coils, R.C., being interposed between the batteryand the cords on each side, as shown. The original patentshowed a pair of coils on one or both sides of the battery, asshown in Fig. 238, but a pair…
Telephone
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