Abstract: A side-driven installation tool with a base plate in which a drive collar is rotatably fitted. A socket is drivingly fitted in the drive collar. The drive socket has an external peripheral groove. A retainer plate is slidably mounted to the base plate. In one position the retainer plate engages the drive socket in the groove to hold it in the drive collar. It can be shifted to a position away from the groove to enable the removal and replacement of the drive socket. A lock can be provided to hold the retainer plate in the engaged position.

Abstract: A device adapted to be attached to a power tool comprising a reference sleeve with a telescopically received inner drive spindle which functions to admit to the work region a sequence of fasteners to feed them one-by-one, and to transmit to the lead fastener a torque so as to set the fastener.

Abstract: There are disclosed nut locking assemblies comprising a washer adapted to slide over a spindle and be keyed to it, and a lock-ring to the rear of the washer and secured to the washer against relative rotation. The nut abuts the washer. The lock-ring is slidable axially so that in a forward position it is disengaged from the nut but in a rearward position serrations on the lock-ring engage corresponding serrations on the nut to lock the nut against rotation. An annular space between the washer and the lock-ring contains a resilient ring which can be strained to alter its diameter. In its normal unstrained condition this ring holds the lock-ring in its locking position. When it is desired to move the lock-ring to its unlocked position it is pushed forward to disengage the serrations of the lock-ring from those of the nut.