Signed system calls and hidden fingerprints

A safety device for a throttle of the type which regulates a carburetor gas flow valve by means of a throttle cable fixedly connected at one end to a throttle lever and at its other end to a gas flow control valve and in which the cable normally moves reciprocally in a passageway as the throttle lever moves between open and closed positions. An ignition circuit safety switch is provided and safety switch control means are provided in the passageway out of contact with a cable moving in normal reciprocable fashion. For abnormal cable movement, however, the cable is distorted in the passageway causing the cable to strike the safety switch control means whereupon the safety switch operates to shut off or otherwise disable the engine controlled by the throttle. In one embodiment, the safety switch control means is also manually moveable into contact with the cable irrespective of the cable position or movement to provide for manual shutting off of the engine.