Abstract: A screw feeding mechanism preferably for use with a hand held drill comprising a hollow sleeve, a magazine for holding screws in communication with the inside of the sleeve, and a hollow liner comprising a tubular wall disposed within the sleeve for axial movement therethrough. The liner wall has an axially extending opening therethrough which is movable into overlapping relationship with the magazine for allowing insertion of a screw from the magazine into the liner through the liner opening. An elongated screw driving rod is disposed within the liner and is axially movable therein for engaging a screw within the liner. A screw advancing mechanism is disposed within the magazine for advancing successive screws into the liner. The screw advancing mechanism is activated for synchronous movement with the liner which is moved, in turn, in response to movement of the screw driving rod.

Abstract: A mechanism for providing a conventional drill with an automatic screw feeding capability comprises an elongated sleeve formed from a tubular wall defining an elongated passageway, a screw driving rod slidably and rotatably disposed within the passageway, and a dependent, hollow skirt surrounding an opening through the wall providing access to the passageway. A magazine containing a spring urged stack of screws, each disposed within a stacking cylinder, is inserted into the skirt for disposing a top end of the magazine within the passageway. The magazine top end includes a slot in alignment with the rod axis allowing removal of a cylinder jacketed screw from the magazine by the rod upon forward movement thereof. In use, the rod rear end is engaged within a drill chuck and movement of the rod relative to the sleeve is obtained by relative movement between the drill, held in one hand by a user, and the sleeve mounted magazine, held in the user's other hand.