Evening Republican, Volume 22, Number 241, Rensselaer, Jasper County, 6 October 1919 — Switch 'Tends to Itself. [ARTICLE]

Switch 'Tends to Itself.

The door-bolt switch is a novel eleetrl<h lighting appliance designed to les-~ sen the lighting expenses ot hotel pro? prietors. The switch is -mortised In the door-jamb, and connected in series with the wall switch. So installed, the new appliance is operated only by the locking of the door on the corridor side. Its operation turns out the lights in the room carelessly left on, and makes the wall sw’itch inoperative. When th? guest returns or the door is unlocked by any person, the wall switch can again be used in the regular way for turning the lights on or ol£ : :