Abstract: A stapling and perforating apparatus having a base with downwardly bent edges, a support plate affixed to the base and extending vertically upwardly therefrom, a stapler pivotally interconnected to and above the base, a punch interconnected to the base above the support plate, a plurality of cylindrically-shaped protuberances extending upwardly from the base a desired distance from the punch, a tray removably fastened to the base, and a generally flat lancet having hewn edges slidably received within a slot formed in the stapler. The punch is mounted on a structure fastened to the support plate. An impact button is provided on one end of the punch. A spring resiliently maintains the impact button above the structure. The protuberances are in linear alignment and are offset from the plane of the support plate. The downwardly extending edge of the base defines a receptacle box area below the base.

Abstract: This invention refers in general to free-wheeling mechanisms of industrial use and more particularly concerns a simple free-wheeling unit which comprises as principal parts a spring-and-ratchet mechanism housed in an ellipsoidal slot stamped in the central sprocket or crown gear. This free-wheeling mechanism is actuated at the required moment by the torque action generated by the spring which makes the ratchet engage the peripheral milled slots of the central sleeve which forms part of the free-wheeling mechanism. In addition to having the function of stopping rotation of the wheel in one direction, the mechanism also houses on each side in respective channels the lubricated roller balls, favoring wheel rotation.