Tool sharpening and compound honing jig
View Patent ↗A holder, guide, or jig for sharpening tools is disclosed, in which the jig holds and orients a tool to be sharpened to properly align the tool on or against abrasive wheels, discs, or sharpening stones, thereby creating a fine, square, beveled edge on the tool, at a predetermined and accurately reproducible angle.
1. A tool sharpening jig comprising:
a jig body having a first side rigidly connected with a bar to a second side;
a roller, and means for rotationally attaching the roller between the first side of the jig and the second side of the jig;
a rest, and means for rotationally attaching the rest between the first side of the jig and the second side of the jig;
means for temporarily rotationally fixing the position of the rest between the first side of the jig and the second side of the jig;
a clamp, and
means for movably attaching the clamp to the rest.
2. The tool sharpening jig of claim 1 , in which the means for rotationally attaching the roller between the first side of the jig and the second side of the jig comprises a first roller pin and a second roller pin.
3. The tool sharpening jig of claim 1 , in which the means for rotationally attaching the rest between the first side of the jig and the second side of the jig comprises a first rest pin and a second rest pin.
4. The tool sharpening jig of claim 1 , in which the means for temporarily rotationally fixing the position of the rest between the first side and the second side of the jig comprises a plurality of threaded tightening pins, a plurality of threaded wells in the rest with threads formed to engage the threads of the plurality of tightening pins, and at least one slot in at least one of the first side and the second side of the jig through which the plurality of tightening pins may extend.
5. The tool sharpening jig of claim 4 , in which the means for temporarily rotationally fixing the position of the rest between the first side and the second side of the jig further comprises a plurality of finger-actionable tightening nuts attached to the ends of the plurality of tightening pins.
6. The tool sharpening jig of claim 1 , in which the means for temporarily rotationally fixing the position of the rest between the first side and the second side of the jig comprises a plurality of threaded tightening pins attached to at least one end of the rest, and at least one slot in at least one of the first side and the second side of the jig through which the plurality of tightening pins may extend.
7. The tool sharpening jig of claim 6 , in which the means for temporarily rotationally fixing the position of the rest between the first side and the second side of the jig further comprises a plurality of finger-actionable tightening nuts with threads formed to engage the threads of the plurality of tightening pins.
8. The tool sharpening jig of claim 1 , in which the means for movably attaching the clamp to the rest comprises:
a first clamp bolt having threads, and a second clamp bolt having threads;
a first clamp nut formed to engage the threads of the first clamp bolt, and a second clamp nut formed to engage the threads of the second clamp bolt; and
a first spring positioned around the first clamp bolt between the clamp and the rest, and a second spring positioned around the second clamp bolt between the clamp and the rest.
9. The tool sharpening jig of claim 1 , further comprising a plurality of plungers fitted in at least one end of the rest, the plurality of plungers having at least one movable end which tends to move toward at least one of the first side and the second side of the jig, and a plurality of holes in at least one of the first side and the second side of the jig, the plurality of holes positioned to allow the at least one movable end of the plurality of plungers to align with at least one of the plurality of holes as the rest is rotated within the jig.