Abstract: A rivet setting tool comprises a feed device which can be actuated for a rivet upsetting operation and which imparts an axial movement to the rivet pin. The feed device includes a piston-cylinder assembly formed by a working piston and a pressing piston. A trigger is arranged to apply pressure to a control valve rod which by its movement opens and closes communicating openings for a pressure fluid in the tool. The trigger is movable in a plane which is inclined with respect to the axis of the control valve rod and when actuated comes into sliding contact by means of a lower rearward edge with an upper end face of the control valve rod to displace it axially.

Abstract: A rivet setting tool having a feed mechanism which can be actuated for a rivet setting operation and which imparts an axial movement to a screwthreaded or tensile pin. The feed mechanism comprises a piston cylinder assembly formed by a working piston and a pressing piston. Both pistons are returned to their initial positions by pressure fluid being conducted to the rear sides thereof, thus avoiding the use of return springs acting on the pistons. To provide that effect, a pressure fluid passage extends from the pressure fluid inlet through the handle portion of the tool to a rearward chamber provided behind the working piston and defined at one side thereof by the rearward face of the piston, thereby to urge the working piston towards its initial position, while a further communication urges the pressing piston also towards its initial position.

Abstract: In a blind riveting apparatus for rivets of different sizes, with a compressed air feed line and an actuating means controllable by the compressed air, and a rotary motor, provided at the inlet (6) of the compressed air feed means (9) into the blind riveting apparatus (1) is a means (10) for setting the level of the pressure of the compressed air which flows into the apparatus (1).

Abstract: A blind rivet setting tool for setting threaded rivet nuts comprises a threaded pin for engaging the rivet, and a rotating mechanism to screw the nut on to the threaded pin before a rivet upsetting operation, and to unscrew the pin from the nut after the upsetting operation. The upsetting operation is performed by imparting an axial movement to the pin. The rotating means is actuated to screw the pin into the nut by applying an axial pressure to the tool and the pin while, when the axial load on the tool is relieved, the rotating mechanism automatically rotates the pin in the opposite direction, for disengagement of the pin from the rivet.

Abstract: In a blind riveting device having a compressed air feed, the compressed air feed serves not only for the actuating means of the blind riveting device, but also for a compressed air conveying means which transports the rivet pins which are pulled off in the riveting operation, into a container which is disposed at a position remote from the blind riveting device.