Abstract The present invention relates to an improved miter box for use by carpenters and others in making miter joints, particularly for mitering picture, cove, casing and base mouldings. The general improvement lies in substituting a square-shaped box for the conventional U-shaped form, and making this miter box in the form of a single, integrally moulded, transparent plastic unit. This structure with its inherent rigidity gives durability, strength and precision to the box itself, all of which aid in achieving precision in the mitering of joints. A support bar is placed along one inside base edge to support hand-held, angularly disposed mouldings and L-shaped corner mouldings in particular at proper cutting angles. Cut-outs are provided in the top for holding work pieces in place. The use of a transparent plastic provides full visibility of the work piece to the user. It also improves the durability of the miter box and increases precision in the cutting or mitering because the saw will not cut easily into the saw cutting guides of its side walls.
A miter box for use in mitering picture, cove, casing and base mouldings comprising: an elongated base; two elongated side walls extending vertically upward and integrally formed with the longitudinal edges of said base at right angles thereto; an elongated cover extending horizontally from side wall to side wall on a plane parallel to said base and integrally formed with the upper longitudinal edges of said side walls at right angles thereto; an elongated support bar of relatively small cross-sectional area extending along the longitudinal intersection of one sidewall with said base and integrally formed therewith for rigidly supporting angularly disposed mouldings and L-shaped corner mouldings; said base, side walls, cover and support bar being integrally molded of a transparent, durable plastic substance to permit viewing of the work piece and sawing process within said box; a plurality of diagonally extending saw guide slots extending vertically downwards through and from the cover of said box, through said side walls and partially through said base; a plurality of cut-outs in the cover of said miter box to enable the user to insert his hands therein to position and hold a work piece.
Claim 2
Dependent Claim
191 words
A miter box for use in mitering picture, cove, casing and base mouldings comprising: an elongated base; two elongated side walls extending vertically upward and integrally formed with the longitudinal edges of said base at right angles thereto; an elongated cover extending horizontally from side wall to side wall on a plane parallel to said base and integrally formed with the upper longitudinal edges of said side walls at right angles thereto; an elongated support bar of relatively small cross-sectional area extending along the longitudinal intersection of one sidewall with said base and integrally formed therewith for rigidly supporting angularly disposed mouldings and L-shaped corner mouldings; said base, side walls, cover and support bar being integrally molded of a transparent, durable plastic substance to permit viewing of the work piece and sawing process within said box; a plurality of diagonally extending saw guide slots extending vertically downwards through and from the cover of said box, through said side walls and partially through said base; a plurality of cut-outs in the cover of said miter box to enable the user to insert his hands therein to position and hold a work piece.
Claim 3
Dependent Claim
47 words
The miter box as defined in claim 1 further comprising: a saw guide slot perpendicular to the longitudinal axis of said miter box extending downwards through and from said cover of said miter box, through said side walls and partially through said base for cutting straight joints.