The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 544
ctors are similar machines, but the connectors are a little less complicated. An important movable part in every selector and** connector is the so-called side-switch. This is a AUTOMATIC EXCHANGES 515 combination of 4 or 5 switches adapted to be throwninto 3 different positions. It is shown in… … Fig. 476.—Connections of First Selector ment. When a current is started and stopped through the private magnet, the end of the side-switch arm slips underthe outer tooth (u 1). As soon as the rotary magnet armatureis attracted, the rotary finger (see also Fig. 474) oscillates theescapement, and the…
Telephone
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