Killark Electric Manufacturing Co.

Rolland R Roots

A remote signaling box uses no glass or breakable parts. The signal box has an unbreakable door that protects a sliding panel and activator which constrains the internal alarm switch. When the door is closed, a foolproof interlock in the sliding panel prevents functioning of the switch. The sliding panel has an opening so that when it is pulled down a spring-loaded activator is released into the opening which allows the internally contained spring-loaded switch to function. No replacement parts are required after the box has been operated. A two-step operation is required for alarming to prevent inadvertent activation. The first step is to open the door which removes the foolproof interlock from the sliding panel. The second step is to pull down the sliding panel. The device is easily reset by moving the sliding panel to its original position and closing the door.

Growing community of inventors

St. Louis, MO, United States of America

Rolland R Roots