Tool for crimping a corner bead piece over an exterior plasterboard corner

A tool for crimping a corner bead piece to an underlying exterior structural corner, comprising the combination of

• a frame having arms defining two pads angled substantially normal to one another across an interior corner, adapted to be positioned against and over the corner bead piece,
• two separate elongated crimping pins and means including an opening in each pad to receive one of the crimping pins angled transversely relative to the respective tool pad,
• a striker, means to support the striker to recriprocate along a path angled relative to the pads, and means pivotally connecting the remote ends of the crimping pins to the striker,
• means including said crimping pin having an elongated intermediate slot, and separate shafts crossing the respective pad opening and fitting through the respective crimping pin slot, operable to guide each crimping pin for complex axial and rotational movements relative to its pad,
• said pivotal connecting means being spaced apart a distance greater than the distance between the intermediate guide means of the crimping pins, to provide thereby that the crimping pins diverge in the direction away from the pads and are angled substantially symetrically relative to the pads and the movement of the striker,
• each crimping pin having its adjacent end recessed within its pad, in one axial position, and projected outwardly beyond its pad in other axial positions,
• said crimping pin being arranged operable to pass the adjacent end of the crimping pin with clearance initially just outwardly beyond the edge of the underlying corner bead piece, and thereafter to force the crimping pin increasingly against the corner bead piece, in moving from the one recessed axial position to the other projected axial positions,
• spring means disposed between the frame and the striker operable to bias the crimping pins in the direction toward the recessed axial position, and
• said striker being adapted to be hit with a mallet or the like to drive the crimping pins against and into the underlying corner bead piece and into the corner structure, to crimp and secure the corner bead piece to the corner structure.

A tool for crimping a corner bead piece to an underlying exterior structure corner, comprising the combination of

• a frame having arms defining two pads angled substantially normal to one another across an interior corner, adapted to be positioned against and over the corner bead piece,
• two separate elongated crimping pins and means including an opening in each pad adjacent one end of the frame to receive one of the crimping pins angled transversely relative to the respective tool pad,
• a striker, means to support the striker to recriprocate along a path angled relative to the pads, and means pivotally connecting the remote ends of the crimping pins to the striker,
• means including said crimping pin having an elongated intermediate slot, and separate shafts crossing the respective pad openings and fitting through the respective crimping pin slot, operable to guide each crimping pin for complex axial and rotational movements relative to its pad,
• said pivotal connecting means being spaced apart a distance greater than the distance between the intermediate guide means of the crimping pins, to provide thereby that the crimping pins diverge in the direction away from the pads and are angled substantially symetrically relative to the pads and the movement of the striker,
• each crimping pin having its adjacent end recessed within its pad, in one axial position, and projected outwardly beyond its pad in other axial positions,
• said crimping pin slot being arranged relative to the underlying corner bead piece operable to pass the adjacent end of the crimping pin with clearance initially just outwardly beyond the edge of the corner bead piece, and thereafter to force the crimping pin increasingly against the corner bead piece, in moving from the one recessed axial position to the other projected axial positions,
• said striker being adapted to be hit with a mallet or the like to drive the crimping pins against and into the underlying corner bead piece and into the corner structure, to crimp and secure the corner bead piece to the corner structure,
• magnet means carried on the frame and disposed coplanar with the pads, operable to engage and magnetically hold the corner bead piece relative to the tool, so as to allow one hand manipulation of the crimping tool and corner bead piece in initially positioning the cornern bead piece onto and over the structural corner,
• the frame arms defining a rear side opposite from the pads, and presenting two generally flat faces meeting at an exterior corner, the frame also defining an end face disposed transverse to the pads and at the end of the frame opposite from the crimping pins, and
• a clip having one free end secured to the end face of the frame, and having another free end disposed to lie closely adjacent but spaced from one flat frame arm faces, the clip being operable to be fitted over and become fixed onto a tool belt, for carrying the tool when not in use.