Patent ID: 7338351

Claim:
A device for holding and positioning a tipped tool blade for sharpening the tip on a sharpening stone at a sharpening angle, the device comprising: a jig to hold the blade during sharpening, the jig including a platform that has a first upper planar surface and a second lower planar surface opposite to and parallel with the first surface; and a reference member to facilitate initial positioning of the blade relative to the jig when the jig and the reference member are positioned relative to each other in a registration position, the reference member including: a third upper planar surface with a plurality of graduated markings for measuring the length of the blade extending beyond the jig, the third planar surface defining a forward edge; a fourth lower planar surface opposite the third surface; a lug extending from the fourth surface, the lug having a fifth planar surface parallel with the third surface and spaced below the third surface, the lug projecting beyond the forward edge of the third surface in a direction parallel with the third surface, the fifth planar surface of the lug being adapted to be removably engaged with the second planar surface of the jig, whereby the lug forms a seat on which the jig can rest when the jig and reference member are in the registration position; wherein, the device is dimensioned so that first planar surface of the jig and the third planar surface of the reference member are coplanar when the jig and the reference member are in the registration position, whereby a blade held by the jig in the registration position is coplanar with, and in contact with, both the first surface and the third surface.