Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 762
, the circuit being completed between twostations by the common-return wire and the wire of the station t..atlias 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… … FIG. 524.—NESS AUTOMATIC SWITCH FOR HOUSE SYSTEMS. invention of Mr. T. W. Ness. The arrangement is such that whenthe subscriber hangs up his receiver the switch arm, which is underthe influence of a spring, will be automatically released and will flyback to the home position without his volition.…
Telephone
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