Tool jig for doors
OwnerYevgeny Fridmaninventor
Life of this patent
Estimating the term…
Abstract
A drill jig for a door comprising a pair of jaws that clamp onto the edge of a door. The clamp is first attached to the edge of the door by a spring load and then further secured by a cam which the workman turns to apply additional clamping force. A center block between the jaws has a guide hole for drilling the lock hole in the edge of the door. The centerline of the center block is perpendicular to the centerline of the knob hole and is positionable to permit location of the knob hole at either one of two locations depending on the style of the lock set. The center block is hingably attached to both jaws of the clamp such that guide hole for drilling the lock hole is always centered between the jaws.
Claims10
A tool jig for drilling a knob hole in a door and for drilling a lock hole in an edge of said door which comprises:
- a pair of jaws;
- a pair of parallel guide rods;
- each said jaw slidably mounted on said pair of guide rods with said centerline of said each knob hole being parallel to said guide rods;
- a pair of springs, one said spring of said pair of springs mounted on one rod and said other spring of said pair of springs mounted on another rod of said pair of rods in operable arrangement to provide that said pair of springs force said jaws to slide toward one another;
- a center block;
- said center block having one slot in one end and another slot in another end;
- said center block having one aperture through said one end and another aperture through said another end;
- said one and another apertures each intersecting said slots in said respective ends of said centerblock;
- one ear having one aperture and mounted on said one jaw and. another ear having another aperture and mounted on said another jaw;
- one said ear positioned in one said slot with said one aperture in said one ear aligned with said aperture in said one end of said centerblock;
- said another ear positioned in said another slot with said another aperture in said one ear aligned with said another aperture in said another end of said centerblock;
- a pair of hinge pins, one hinge pin of said pair of hinge pins slidably mounted in one aperture in said one ear mounted on said jaw and said aperture in one end of said centerblock and another hinge pin of said pair of hinge pins slidably mounted in said another aperture in said another ear on said whereby another jaw and said another aperture in another end of said centerblock whereby one end of said centerblock is hingably attached to one said jaw and another end of said center block is hingably attached to said other jaw;
- said center block having a lock hole adapted for guiding a tool for cutting a lock hole;
- each said jaw having a guide hole for guiding a hole saw cutting a knob hole in said door;
- said center block arranged in operable combination with said jaws to enable clamping said drill jig on an edge of said door with one said jaw against one side of said door and another said jaw against another side of said door and a surface of said center block abutting an edge of said door providing that said guide holes in said jaws for guiding said hole saw be positional to cut said knob hole and a second hole saw be guideable by said lock hole in said center block to cut said lock hole in said edge of said door;
- a clamp plate slidably mounted on said pair of rods;
- a lever pivotally mounted on said clamp plate to turn about an axis perpendicular to said lever, and perpendicular to said guide rods;
- said lever having a cam surface on one end of said lever operably arranged to provide that, when said lever is oriented to one position, said cam surface is free and when said lever is oriented to another position, said cam surface is forced against one of said jaws whereby said jaws are clamped onto said guide rods.
A tool jig for guiding a tool machining a first pattern of at least one recess in a broad surface of a door and for machining a second pattern at least one recess in an edge surface of said door which comprises;
- a pair of jaws, each jaw having a jaw sections joined to a handle section;
- each said jaw section having holes arranged according to said first pattern providing a guide for the tool when machining the broad surface of the door;
- means for coupling said pair of jaws together in an operable arrangement which permits clamping said door between said jaw sections;
- said means for coupling having an array of holes arranged according to said second pattern providing a guide for guiding the tool in machining the second pattern of recesses in an edge surface of said door;
- said means for coupling arranged in operable combination with said jaws to provide that said array of holes arranged according to said second pattern is centered with respect to said edge surface of said door;
- a pair of parallel guide rods inserted slidably through holes in each said handle section;
- a pair of springs, one said spring of said pair of springs mounted on one guide rod of said pair of guide rods and said other spring of said pair of springs mounted on another guide rod of said pair of guide rods in operable arrangement to provide that said pair of springs force said jaws to slide toward one another.
The tool jig of claim3 which further comprises a clamp means for clamping each said jaw onto said pair of rods at a selected distance from said other jaw.
Dependencies are inferred from the claim text.