US Patent: 961,010
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| Grinding Machine
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Patentees:
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| Pierre J. Poitras (exact or similar names) - Rumford, ME |
| Wilfrid Caron (exact or similar names) - Rumford, ME |
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Patent Dates:
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| Applied: |
Sep. 24, 1909 |
| Granted: |
Jun. 07, 1910 |
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Patent Pictures:
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Joel Havens
Martin J. Donnelly Antique Tools
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Description: |
| Victor J. Evans - patent attorney
This invention relates to shears sharpening machines, the object of the invention being to provide a simple, manually operated machine for quickly sharpening the blades of shears scissors and the like, the machine embodying several adjustments by means of which the abrasive member may be operated at a variety of angles corresponding with the body of the cutting edge of the blade of the shears. The machine also embodies novel means for clamping the blade of a shears in a fixed position, and includes means for securely holding the point of the blade so as to enable an even sharpening of the blade to be effected throughout the entire length thereof.
We claim;
1. A sharpening device of the class specified, comprising a base, a vertically adjustable vise thereon adapted to clamp and hold the blade to be sharpened, a vertically adjustable bearing post arranged at a distance from the vise standard, and a reciprocatory sharpening member provided with a guide rod supported by the bearing post, said sharpening member being adapted to be moved back and forth across the edge of the blade to be sharpened, substantially as described.
2. A sharpening device of the class specified, comprising a base, a vertically adjustable blade holding vise mounted on said base, and a sharpening member comprising a body having a tee-shaped head at one end thereof, a movable clamp head at the opposite end thereof, one or more sharpening stones held between said heads, a handle at one end of said sharpening member, and a guide rod projecting from the opposite end thereof and working through a guide opening in said bearing head.
3. A sharpening device of the class described comprising a base, a vertically adjustable blade holding vise mounted thereon, a vertically adjustable bearing head supported by the base, and a stone holder comprising a flat bolt, a fixed tee-shaped head 80 at one end thereof, a guide rod extending from said head through an opening in said bearing head, a movable clamping head arranged opposite the fixed head, an operating handle constituting a nut for forcing the clamping head against the sharpening stone or stones, and stop collars on said guide rod cooperating with said bearing head.
4. A sharpening device or the class described comprising a base, a vertically adjustable blade holding vise mounted on the base, a vertically adjustable bearing head mounted on the base, a ball shaped guide mounted in a socket in said bearing head and provided with a guide opening, and a stone holder comprising a flat body, a tee-shaped head at one end thereof, a guide rod projecting from said head and working through the opening in the ball shaped guide, a threaded shank at the opposite end of the holder, a clamp head having an opening through which said stone passes, and a combined handle and nut threaded on said shank, substantially as and for the purpose specified.
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