. The practical telephone handbook and guide to the telephonic exchange . f i*ST SELECTOR Fig. 479.—Theoretical Diagram of Trunk Release grams are given which have been taken from one of a longseries of articles on the History of the Automatic Telephone by A. Bessy Smith and published in Telephony of Chicago vf*nc*l C~r r^^iffi •*• |i, . ^ xfi\— i J C*lWH WHIICM #3LL ,0TA1 . «OTAB -l J>tlj SX5L is l Ws> ^I ««TAHV Fig. 480.—First Selector with Trunk Release, Los Angeles of 13th March 1909. Fig. 479 shows the connections of acomplete circuit of the system as installed at Los Angel

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. The practical telephone handbook and guide to the telephonic exchange . f i*ST SELECTOR Fig. 479.—Theoretical Diagram of Trunk Release grams are given which have been taken from one of a longseries of articles on the History of the Automatic Telephone by A. Bessy Smith and published in Telephony of Chicago vf*nc*l C~r r^^iffi •*• |i, . ^ xfi\— i J C*lWH WHIICM #3LL ,0TA1 . «OTAB -l J>tlj SX5L is l Ws> ^I ««TAHV Fig. 480.—First Selector with Trunk Release, Los Angeles of 13th March 1909. Fig. 479 shows the connections of acomplete circuit of the system as installed at Los figure should be compared with Fig. 477 and it will beseen that only two magnets are connected in shunt directly toany one subscribers circuit, the rest of the release magnets, 522 PRACTICAL TELEPHONE HANDBOOK RELEASE \Kvn*.. Fig. 481.—Second Selector with Trunk Release, Los Angeles RELEASE TRUN*

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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttelephone, bookyear19