Abstract: Apparatus is disclosed for gripping and pulling on an elongated mandrel of a blind rivet, and having a first handle with a supporting surface and an opening therethrough for receiving the mandrel. A second handle having a mandrel receiving portion is mounted on the tool about a pivotal axis. A jaw is mounted for movement relative to the second handle about the pivotal axis. A mandrel is insertable through the opening between the receiving portion and the jaw. A spring initially biases the jaw means into contact with the supporting surface while the second handle moves towards the closed position such that the receiving portion moves towards the jaw to cause the mandrel to become tightly gripped between it and the jaw whereupon the continued movement of the second handle to the closed position moves the jaw away from contact with the supporting surface and into tighter gripping engagement with the mandrel to forcefully pull generally upwardly on the mandrel.

Abstract: An air-powered blind rivet setting tool including a pivotable transmission linkage between the compressed air powered piston rod unit and the rivet pulling mechanism including a valving arrangement for accomplishing cyclical operation of the tool.

Abstract: An apparatus and method particularly adapted for use in continuously setting blind rivets having elongated mandrels in suitably apertured material.

Abstract: An air-powered blind rivet setting tool including a pivotable transmission linkage between the compressed air powered piston rod unit and the rivet pulling mechanism including a valving arrangement for accomplishing cyclical operation of the tool.

Abstract: A rivet setting tool having rack and pinion gear structure is disclosed. The rack is rectangular in cross-section and bears squared teeth on its upper face. A slideway is provided for movement of the rack and a wear plate is disposed within the slideway. The wear plate includes a base and a pair of upstanding spaced laterally disposed members projecting from the base and a downwardly depending portion at one end of the base. The base and upstanding sides abut the bottom and adjacent sides of the rack. The tool includes a body element having a plurality of spaced pairs of internally disposed bearing support openings. Each of the openings have square sides. Within each pair of adjacent bearing support openings a square-sided bearing is disposed which is also provided with an opening therewithin for receiving a pin.