Cutting guide
OwnerGerard F. Thornellinventor
Life of this patent
Estimating the term…
Abstract
A cutting guide for precisely setting radial arm and table saw blades in the fabrication of lapped and dado joints comprises a generally wedge shaped body that is formed with a channel at a medial region and a seat at one end. A guide is provided in the channel midway between an inner edge of the seat and the other end of the body. The dimensional relationship among the inner edge of the seat, the other end of the body and the guide is such that when the seat is placed on a piece of lumber with the inner edge of the seat abutting the edge of the lumber and a saw blade is moved to lightly contact the guide, the saw blade is in position to cut halfway into the lumber for making a lap or dado joint.
Claims10
A device for use with a power saw for positioning a saw blade relative to a workpiece so that the saw blade will cut halfway into a given dimension of the workpiece for making fitted joints, said device comprising an elongated body having an upper surface, a lower surface, a first end and a second end, said lower surface at said first end is cutaway to form a resting surface and an abutting surface, a first corner formed at an intersection of said resting surface and said abutting surface, a second corner formed at an intersection of said second end and said lower surface, said first corner and said second corner disposed in a common plane, and guide means at a medial portion of said body midway between said first and second corners, said guide means disposed in said common plane, whereby said guide means is disposed in a plane that intersects the midline of a given dimension of the workpiece when said resting surface is placed on the workpiece and said abutting surface is pressed against an edge of the workpiece.
A device for use with a power saw for positioning a saw blade relative to a workpiece so that the saw blade will cut halfway into a given dimension of the workpiece for making fitted joints, said device comprising an elongated wedge shaped body having an upper surface, a lower surface, a first end and a second end, said upper and lower surfaces converging from said first end to said second end, said lower surface at said first end is cutaway to form a resting surface and an abutting surface, an inside corner formed at an intersection of said resting surface and said abutting surface, an outside corner formed at an intersection of said second end and said lower surface, said inside and outside corners disposed in a common plane, a channel formed at a medial portion of said body, said channel extending downwardly from said upper surface to said common plane, and a guideline within said channel midway between said inside and outside corners, said guideline disposed perpendicular to a longitudinal axis of said body in said common plane, whereby said guide means is disposed in a plane that intersects the midline of a given dimension of the workpiece when said resting surface is placed on the workpiece and said abutting surface is pressed against an edge of the workpiece.
Dependencies are inferred from the claim text.