. American telephone practice . 10 a 210 -^jasaci S ^ _^^ _0. 739 ■40 AMERICAN TELEPHONE PRACTICE. tuations produced in the local circuit of any transmitter act in-ductively through the induction coil, /, upon the talking circuitcontaining the receiver, the circuit being completed between twostations by the common-return wire and the wire of the station been called. This arrangement necessitates the removal of theplug when through talking, as otherwise both of the stations con-nected would be rung up when either of the stations was called. The Holtzer-Cabot Electric Company has overco
. American telephone practice . 10 a 210 -^jasaci S ^ _^^ _0. 739 ■40 AMERICAN TELEPHONE PRACTICE. tuations produced in the local circuit of any transmitter act in-ductively through the induction coil, /, upon the talking circuitcontaining the receiver, the circuit being completed between twostations by the common-return wire and the wire of the station been called. This arrangement necessitates the removal of theplug when through talking, as otherwise both of the stations con-nected would be rung up when either of the stations was called. The Holtzer-Cabot Electric Company has overcome the difficultydue to the subscriber calling leaving his switch lever in the wrongposition, by the apparatus shown in Fig. 524, this device being the
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