nd ground wire,W5»» ~=^ \M. | A, to the ground. It iJ When the key is depressed to call adistant station, thekey touches the in-ner or top contact,on the battery wire,B, sending the cur-rent through thebutton 2, switch, E,and line to the belland ground of thedistant station. Thecurrent returns… … Fig. 5.- Telephone Connections. with the switch same time moved to button 3 the line connection is through the switch wire, 6, secondary wire of the induction coil, and receiver to the ground. The switch, F, when turned as described,completes the local circuit, the current passing from one celiof…
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