Hinge drilling jig

A hinge drilling jig for locating and drilling a hinge cup hole and hinge cup mounting screw holes to be drilled in a workpiece having a face and at least two edges comprising:

• a) a jig body having a sleeve bearing;
• b) a drill bit having a shank slideably received in the sleeve bearing for drilling the hinge cup hole;
• c) a means for locating the position of the drill bit in continuously variable positions on the face of the workpiece relative to the first edge comprising two thumbscrews having marks received in the side of the body;
• d) a means for retaining the drill bit in the jig body comprising a collar secured on the drill bit by a plurality of setscrews and having a hexagonal shank adaptor and a spring;
• e) a means for determining a depth of the hinge cup hole to be drilled by the drill bit prior to drilling the hinge cup hole comprising a shoulder on the shank of the drill bit and annular rings cut into the shank of the drill bit at spaced intervals away from the shoulder;
• f) a means for locating the position of the hinge mounting screw holes on the face of the workpiece in predetermined positions comprising a plurality of countersinks contained on the jig body;
• g) a means for holding the jig body in position on the workpiece comprising a handle mounted on the jig body;
• and
• h) a means for locating the jig body on the face of the workpiece relative to the second edge comprising a measuring head, a ruler holder which is slideably captured in the measuring head and having a ruler attached thereto, a measuring rod inserted in the measuring head, and a threaded stud which tightens the measuring head around the ruler holder.

A hinge drilling jig for locating and drilling a hinge cup hole and hinge cup mounting screw holes to be drilled in a workpiece having a face and at least two edges comprising:

• a) a jig body having a sleeve bearing;
• b) a drill bit having a shank slideably received in the sleeve bearing for drilling the hinge cup hole;
• c) a means for locating the position of the drill bit in continuously variable positions on the face of the workpiece relative to the first edge comprising two thumbscrews having marks received in the side of the jig body;
• d) a means for retaining the drill bit in the body comprising a collar secured on the drill bit by a plurality of setscrews and having a hexagonal shank adaptor and a spring;
• e) a means for determining a depth of the hinge cup hole to be drilled by the drill bit prior to drilling the hinge cup hole comprising a shoulder on the shank of the drill bit and annular rings cut into the shank of the drill bit at spaced intervals away from the shoulder;
• f) a means for locating the position of the hinge mounting screw holes on the face of the workpiece in predetermined positions comprising a plurality of countersinks contained on the jig body;
• g) a means for holding the jig body in position on the workpiece comprising a clamp arm mounted on the jig body and containing a threaded clamping screw having a ball socket foot;
• and
• h) a means for locating the jig body on the face of the workpiece relative to the second edge comprising a measuring head, a ruler holder which is slideably captured in the measuring head and having a ruler attached thereto, a measuring rod inserted in the measuring head, and a threaded stud which tightens the measuring head around the ruler holder.