Drill guide apparatus
AssigneeJames Anthony Gowker
InventorJames Anthony Gowker
Life of this patent
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Abstract
This invention relates to a drill guide apparatus for use in drilling holes in wood and other material in conjunction with spade drills. When deeper holes are required, the invention will also utilize drill extension rods. The embodiment consists of 4 separate guides assembled together which make a hole as parallel and perpendicular as possible to the work piece. One of these guides, the insert guide, acts as a stabilizer that helps keep the drill from drifting and wobbling. The guide shaft lines up with the work piece and starts the parallel course. When the spacer and base plate lay up against the work piece, the spade drill will travel in a perpendicular course. The spade drill and drill extension rod are prior art and are readily available in the market place.
Claims1
A guide assembly for guiding a spade drill as it drills a hole, comprising:
- a base plate having at least five holes, four of those holes being threaded;
- a spacer having four unthreaded holes and one threaded hole, each of the holes in the spacer aligning with a corresponding hole in the base plate;
- a bolt received in the unthreaded hole in the base plate and the threaded hole in the spacer for removably connecting the base plate and spacer;
- two insert guides for receiving shanks of spade drills, the insert guides being slidably received within corresponding unthreaded holes in the spacer, the outer diameter of each insert guide being smaller than the diameter of a hole drilled by a corresponding spade drill, with the outer diameter of the insert guide permitting the insert guide to fit snugly within a hole drilled by the outer diameter of the spade drill, each of the guide inserts having threads for connection within corresponding threaded holes in the base plate;
- and
- two guide rods having threaded ends to connect with corresponding threaded holes in the base plate.
Dependencies are inferred from the claim text.