Router jig for cutting decorative profiles
AssigneeScribe Master Limited
InventorColin Roy Davey
Life of this patent
Estimating the term…
Abstract
A jig for profiling the end of an elongate workpiece, especially a coping or crown molding section, comprises a support for a sample to be copied, and for a profiling comb to be pushed against the sample to define a cam surface. A cutting tool can be mounted to follow a path defined by the cam surface, to cut the workpiece end to match the shape of the cam surface. The profiling comb is movable between a first position facing the sample support to form a profile and a second position in which the profile can contact the cam follower on the movable mounting. In its second position the comb extends at an acute angle to the longitudinal direction of the workpiece support, which is configured to support the workpiece at an acute angle about its longitudinal axis corresponding to the angle at which the comb is fixed.
Claims7
A router jig for profiling the end of an elongate workpiece to match a desired shape, said jig comprising:
- a support for a sample, having a surface profile to be copied;
- a profiling comb in the form of an array of parallel plates held in contact with one another by retaining means extending between a pair of support blocks, each said plate being individually and reversibly slidable in one direction relative to the others and having a contact surface at one end thereof whereby the contact surfaces of adjacent plates can be pushed against a sample in said support to define a cam surface corresponding to the profile to be copied means being provided for clamping the plates of the profiling comb together, preventing further said sliding movement,
- a movable tool mounting on which a cutting tool can be mounted and moved to follow a path defined by said cam surface to cut an end of the workpiece to match the shape of said cam surface, and
- a workpiece support arranged to hold said workpiece with one end in the path of a cutting tool mounted on said movable mounting,
- wherein the profiling comb is mounted on a flat base which is longer and narrower than the comb and thus extends beyond the comb on at least one side, the base being pivotally movable on a support platform, about a vertical axis spaced from the profiling comb in a direction to one side of it, and wherein the profiling comb is invertible on said base between a first position in which it faces the sample support and a second position in which it can engage said cutting tool mounting, at an adjustable angle to vary the direction of a cut relative to a workpiece being cut,
- wherein said profiling comb, when in said second position, is fixed on said flat base at an acute angle to a longitudinal direction of the workpiece and
- wherein the workpiece support is configured to support and retain a workpiece at an acute angle about its longitudinal axis corresponding to said acute angle at which said profiling comb is fixed.
Dependencies are inferred from the claim text.