IP Library › Granted Patent US 10,759,017
Granted Patent B2
US 10,759,017 · App. 15/934,143 · Granted Sep 1, 2020

Glideway crowning plate and method thereof for creating a crown on a cutting edge of a cutting blade with a sharpening jig

Inventor: David G. Powell (Needham, MA)
Assignee: David G. Powell
B24B9/04B23Q16/08B24B3/38B24D15/06
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Quick Facts
Patent No.
US 10,759,017
App. No.
15/934,143
Granted
Sep 1, 2020
Kind
B2
Abstract

A glideway crowning plate for creating a crown on a cutting edge of a cutting blade with a sharpening jig including a glideway crowning plate having a concaved curved surface of a predetermined radius placed proximate spaced glides of a sharpening jig. The sharpening jig utilizes a flat sharpening plate or a flat sharpening stone and the sharpening jig is side-stroked on the flat sharpening plate or the flat sharpening stone and the glideway crowning plate imposes a curved path of the predetermined radius on the sharpening jig, the cutting blade, and the flat sharpening plate or the flat sharpening stone to create a crown in the cutting edge of a cutting blade.

Claims (16)

1. A glideway crowning plate for creating a crown on a cutting edge of a cutting blade with a sharpening jig, the glideway crowning plate comprising:

a glideway crowning plate having a concaved curved surface of a predetermined radius placed proximate spaced glides of a sharpening jig, and

wherein the sharpening jig utilizes a flat sharpening plate or a flat sharpening stone and the sharpening jig with a cutting blade therein is side-stroked on the flat sharpening plate or flat sharpening stone and the glideway crowning plate imposes a curved path of the predetermined radius on the sharpening jig, cutting blade, and flat sharpening plate or flat sharpening stone to create a crown in the cutting edge of a cutting blade.

2. The glideway crowning plate of claim 1 in which the predetermined radius includes a radius in the range of about 180 inches to about 480 inches.

3. The glideway crowning plate of claim 1 in which the predetermined radius has a radius of approximately 450 inches.

4. The glideway crowning plate of claim 1 in which the glideway crowning plate is made of steel.

5. The glideway crowning plate of claim 1 in which the glideway crowning plate has a length of about 8 inches, a width of about 1.5 inches and a thickness of about ¼ inches.

6. The glideway crowning plate of claim 1 further including a drop-off prevention device configured to prevent unintended drop-offs and shifting during sharpening.

7. The glideway crowning plate of claim 1 in which the spaced glides of the sharpening jig are spaced further than the width of the cutting blade.

8. A method for creating a crown on the cutting edge of a cutting blade with glideway crowning plate and a sharpening jig, the method comprising:

providing a glideway crowning plate including a concave surface of a predetermined radius;

placing the glideway crowning plate proximate spaced glides of the sharpening jig;

placing a flat sharpening plate or a flat sharpening stone proximate the front of the sharpening jig, and

side-stroking the sharpening jig with a cutting blade secured thereto on the flat sharpening stone or the flat sharpening plate such that the glideway crowning plate imposes a curved path of a predetermined radius on the sharpening jig, the cutting blade, and flat sharpening plate or flat sharpening stone to create a crown in the cutting edge of cutting blade.

9. The method of claim 8 in which the predetermined radius includes a radius in the range of about 180 inches to about 480 inches.

10. The method of claim 8 in which the predetermined radius has a radius of approximately 450 inches.

Continuity (1)
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