Abstract: A surgical driver includes an elongated drive shaft engageable with a surgical bone anchor in torque transmitting relationship, a locking sleeve, and a sleeve locking member. The locking sleeve is mounted to the drive shaft and is engageable with the head of surgical bone anchor. The sleeve locking member is mounted for relative motion between a first position in which it is simultaneously engaged with both the drive shaft and the locking sleeve in rotationally fixed relationship and a second position in which it is disengaged from the rotationally fixed relationship with at least one of the drive shaft and locking sleeve.

Abstract: A rivet tool is supported for repeated displacement to a rivet setting location. When the tool is at this location, it is forcefully pushed against the workpiece during rivet setting to assure that the rivet will be properly set.

Abstract: An automatic riveting machine is disclosed which counts the rivets, as set, to control the feeding of rivets from a feeder to the rivet track or chute. The track will be resupplied after a selected number of rivets are set or sooner should the track become prematurely empty by removal of rivets from the track.

Abstract: A mechanical feeding mechanism for delivering plugs seriatum from a cylindrical delivery chute having upper and lower latching mechanisms. Each of the upper and lower latching mechanisms are movable from a latching position wherein the latching mechanism engages a plug in the chute and an unlatching position. Linkage mechanism connects the upper and lower latching mechanisms such that when one of the latching mechanisms is in the unlatching position the other latching mechanism is biased toward the latching position.

Abstract: Setting tool for setting fasteners by driving a pin into an opening of each fastener, comprising a split collet having a central opening through which the pin is driven, the abutting faces of the collet segments being functionally convex and the leading ends of their exterior surfaces defining outwardly opposed jaws. An O-ring encircling the collet urges the following ends of the collet segments together, thereby urging the jaws apart. A fastener can be inserted over the jaws to locate it for being set by the pin. In the illustrated structure at least a portion of the central opening of the collet is smaller than the shaft of the setting pin, so when the pin is thrust through the collet it spreads the segments apart, thereby more tightly engaging the interior wall of the fastener.

Abstract: An operator-tended machine, e.g., a machine for applying snap fasteners, rivets or the like to workpieces, has an upper tool which moves against a lower tool acting as an anvil for it. A fingerguard moves ahead of the upper tool to protect the fingers of an operator. A workpiece support, with reference to which the prescribed safety distance of the fingerguard is calculated, can move downwardly and yield to the upper tool against a biasing force.

Abstract: A pierce rivet machine for simultaneously pierce riveting sheets of material to the opposing flanges of a channel shaped member having a first and a second pierce rivet driver, a first and a second pierce rivet holder for respectively holding rivets for said first and second pierce rivet drivers, and a first and a second anvil each respectively positioned to function in conjunction with the operation of said first and second pierce rivet drivers. The first and second pierce rivet drivers are positioned diametrically opposed to each other. A drive rod supports each pierce rivet driver and attached to the end of the drive rod is a link member and bellcrank for driving the drive rod along an axial reciprocating path. A tie bar has its ends pivotally attached to the bellcranks causing the drive rods to be simultaneously actuated. One of the bellcranks has its end pivotally attached to an air cylinder motor that operates the machine.

Abstract: The invention relates to slug riveting apparatus wherein a pair of opposed rivet head forming anvils move relatively toward each other to form heads at the opposite ends of a cylindrical rivet blank, more or less simultaneously, after the blank has been inserted in the workpieces. An annular elastomeric polyurethane member is associated coaxially with one of the rivet head forming anvils and has a bore for receiving and resiliently gripping a cylindrical rivet blank. The elastomeric annular member holds the blank during insertion of the blank in the workpieces as the anvils move relatively toward each other, and the rivet blank is moved out of engagement with the elastomeric annular member by the associated head forming anvil during the head forming operation by resilient radial expansion of the elastomeric annular member. The rivet forming anvils have flat bottomed head forming recesses with sloping side walls.

Abstract: The invention relates to slug riveting apparatus wherein a pair of opposed rivet head forming anvils move relatively toward each other to form heads at the opposite ends of a cylindrical rivet blank, more or less simultaneously, after the blank has been inserted in the workpieces. An annular elastomeric polyurethane member is associated coaxially with one of the rivet head forming anvils and has a bore for receiving and resiliently gripping a cylindrical rivet blank. The elastomeric annular member holds the blank during insertion of the blank in the workpieces as the anvils move relatively toward each other, and the rivet blank is moved out of engagement with the elastomeric annular member by the associated head forming anvil during the head forming operation by resilient radial expansion of the elastomeric annular member. The rivet forming anvils have flat bottomed head forming recesses with sloping side walls.