Honing jig

a jig and honing technology, applied in the field of honing jigs, can solve the problems of tool running off the whetstone, hobbyists, and affecting the work efficiency of carpenters

Inactive Publication Date: 2009-01-01
JESSEM TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]In yet another aspect of the present invention, a method of honing a blade generally comprises pivotally moving a blade fixture at a selected angle for the blade. The blade fixture is secured at the selected angle mounting the blade in the fixture at the selected angle, and then the securement of the fixture is released. The blade is moved into engagement with an abrasive substance, and the blade is translated across the abrasive substance to hone the blade.

Problems solved by technology

Many carpenters and particularly hobbyists lack such skill and do more harm that good to a blade when they attempt to sharpen it by this method.
Anther shortcoming of the method is that the tool tends to run off the whetstone as it is pushed back and forth.
Unless particular care is taken to prevent this, the blade can be damaged as it is being pushed.
Furthermore, the operator may injure himself since his hand may be struck by the blade if his hand is in its path.

Method used

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Examples

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Embodiment Construction

[0020]With reference to FIG. 1, the honing jig has a base 10 on which is mounted, at one end, two pairs of spaced supporting blocks 12a,b. An end member 14 has opposing trunnions 16 which extend into bores in each supporting block so that each end member is pivotal with respect to the base. An end of one of a pair of spaced guide rods 18a,b is accommodated in each end member. The opposite ends of the guide rods are mounted to a dual supporting block 20, described more fully below. A sliding tube 22 is mounted for sliding to each guide rod 18a, 18b. A carriage, indicated generally at 24 includes a transverse or adjustment plate 26 which has a passageway 28 at opposite sides for receipt of the sliding tubes. The sliding tubes 22 are pressure fitted into the passageways 28 or otherwise suitably connected so that the carriage 24 is moveable or slidable on the guide rods 18a, 18b. The carriage has a means for removably fastening a blade 32 thereto in the form of a swiveling clamp 30 whic...

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Abstract

The honing jig has a base on which a whetstone or other abrasive substance is mounted. A pair of spaced guide rods extends the length of the base. A carriage is mounted to tubes which slide along the rods and through which the guide rods extend. The blade to be sharpened is held to the carriage by a clamp and the clamp swivels on the carriage to allow the inclination of the blade relative to the whetstone to be adjusted. The angle of the guide rods can be adjusted to permit fine adjustment of the inclination of the blade.

Description

FIELD OF THE INVENTION[0001]This invention relates to honing jigs and more particularly to a jig for sharpening the cutting edge of a blade in a tool such as a plane and a chisel. In one embodiment of the invention, the jig has provision for adjustment of the inclination of the blade according to the angle of its cutting surface. In another embodiment, the jig has provision for honing a secondary bevel on the cutting edge.BACKGROUND OF THE INVENTION[0002]The conventional method of sharpening a blade of a chisel or a plane is to clamp the blade to a honing tool having a roller and to push the tool across an abrasive surface such as that of a whetstone. Such a method has a number of shortcomings, one of which is that skill is required to operate the tool properly. Many carpenters and particularly hobbyists lack such skill and do more harm that good to a blade when they attempt to sharpen it by this method.[0003]Anther shortcoming of the method is that the tool tends to run off the whe...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B24B19/00B24B1/00
CPCB24B3/38B24D15/06B24B41/066
Inventor SMITH, DARRIN E.
Owner JESSEM TOOL
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