A locking apparatus consisting of a latch member; a central portion of which is pivotally mounted and is provided with a locking notch at one side thereof and engageable with a striker; and a forwardly projecting member at the opposite side thereof engageable with a locking plate pivotally mounted on...http://www.google.es/patents/US4007955?utm_source=gb-gplus-sharePatente US4007955 - Locking apparatus
