An alarm sound device or electrical device installation for when the gas key is left open (Machine-translation by Google Translate, not legally binding)

摘要

Installation of an audible electrical device or apparatus for alarm when the gas tap is left open, characterized by an audible electrical device or device adaptable to any gas ring consisting of two coils, a transverse flexible arm attached and fixed on one side to the body of the box and a lever by two contacts, one constant or fixed and the other variable depending on whether the said lever is in the rest position due to the action of a spring or actuated downwards by external weight; in the first case, the circuit will be closed, so that the current through the coils in the second case will remain open or what is the same disconnected the coils will create the intermittent poles immantations of the same ones that consecutively attract and leave the transverse arm, originating the sound of the timbre or "cicada" depending on whether it has a camera or not. (Machine-translation by Google Translate, not legally binding)