Drill jig for preparing a door to receive a cylindrical lock

A door preparation drill jig mountable in a main bore formed in a door in combination with a latch mounted in the door and oriented to extend into the main bore, the drill jig comprising

• an exterior member formed to include at least one drill guide, and
• means for mounting the exterior member to the door, the mounting means extending into the main bore and including means for engaging a portion of the latch extending into the main bore to anchor the drill jig to the door so as to locate the exterior member and at least one drill guide in a mounted position on the door so that each drill guide is oriented to face the door and aim a drill bit received therein at a portion of the door to be drilled to provide a lockset mounting hole adjacent to the main bore.

A jig for preparing a door to receive a lockset, the jig comprising

• a cylindrical body configured to extend into a main bore formed in the door to receive the lockset, the cylindrical body including a latch slot for receiving a latch back plate included in the lockset,
• at least two bushings for receiving a drill bit, and
• means for fixing the bushings in a fixed position relative to the cylindrical body.

A jig for preparing a door to receive a lockset, the jig comprising

• a cylindrical body configured to extend into a main bore formed in the door to receive the lockset, the cylindrical body including a flexible tab configured to engage the main bore of the door,
• at least two bushing for receiving a drill bit, and
• means for fixing the bushings in a fixed position relative to the cylindrical body.

A jig for preparing a door to receive a lockset, the door being formed to include a main bore extending therethrough and sized to receive the lockset therein, the jig comprising

• a cylindrical body having a longitudinal axis and being configured to fit in the main bore formed in the door so that the cylindrical body is fixed against movement relative to the door the cylindrical body including a flexible tab for engaging in the main bore of the door,
• at least two drill guides providing means for receiving a drill bit, each drill guide having an axis defining the drill bit attitude, and
• means for fixing the drill guides in a fixed position relative to the cylindrical body such that the axes of the cylinder and the drill guides are parallel relative to one another.

A jig for preparing a door to receive a lockset, the door being formed to include a main bore extending therethrough and sized to receive the lockset therein, the jig comprising

• a cylindrical body having a longitudinal axis and being configured to fit in the main bore formed in the door, the cylindrical body including a latch slot for receiving a latch back plate of the lockset therein,
• at least two drill guides providing means for receiving a drill bit, each drill guide having an axis defining the drill bit attitude, and
• means for fixing the drill guides in a fixed position relative to the cylindrical body such that the axes of the cylinder and the drill guides are parallel relative to one another.

A jig for preparing a door to receive a lockset, the door being formed to include a main bore extending therethrough and sized to receive the lockset therein, the jig comprising

• a cylindrical body having a longitudinal axis and being configured to fit in the main bore formed in the door, the cylindrical body including a flexible tab for engaging in the main bore of the door,
• at least two drill guides providing means for receiving a drill bit, each drill guide having an axis defining the drill bit attitude, and
• means for fixing the drill guides in a fixed position relative to the cylindrical body such that the axes of the cylinder and the drill guides are parallel relative to one another.

A jig for preparing a door to receive a lockset, the jig comprising

• a planar body having a front surface and a back surface joined by a perimetral edge,
• at least two cylindrically shaped drill guides perpendicularly fixed to the front surface of the planar body and configured to provide means for receiving a drill bit therein, and
• a cylindrical body fixed perpendicular to the back surface, the cylindrical body including a flexible tab for engaging in the main bore of the door.

A door preparation drill jig mountable in a main bore formed in a door prior to insertion of a latch-actuating lockset in the main bore, the drill jig comprising

• an exterior member formed to include at least one drill guide, and
• means for fixedly mounting the exterior member to the door, the mounting means extending into the main bore and including means for engaging a latch-actuating lockset positioned in the main bore to hold the at least one drill guide in a predetermined fixed position on the door.