Safety switch

Operating means for operating a switch in an electric current circuit, comprising an inner cylinder connected to the switch, a push rod axially movable relative to the inner cylinder between an outer resting position and an inner active position wherein the push rod acts on the switch to break the current circuit, and wherein the push rod during movement to the active position passes and is releasably locked in the active position through the engagement with a spring member supported on the inner cylinder, said operating means further being provided with a push button connected to the push rod for operation of the push rod between said resting and active positions, wherein the movement of the push rod in a direction toward the resting position is axially limited by an outer cylinder, which upon assembly is journalled concentric about the inner cylinder whereafter the cylinders are mutually rotated to a locking position, and wherein the cylinders are unreleasably inter-locked through a snap-lock means encased by the superimposed cylinders and effective for preventing the relative rotation of the two cylinders in the inter-locked position.