Fixture and device for controlled scissor sharpening
DCFirst Claim
1. A fixture for controllably holding a blade element for precise sharpening and shaping thereof, said fixture comprising an articulable holding arm with at least two movable joints and an extension portion, having a longitudinal extension axis, said extension portion being swivelly attached at one end of the extension axis to one of the joints, and said extension portion comprising holding means for the blade element at another end of the extension axis said holding means being freely concentrically rotatable relative to the longitudinal extension axis, wherein the holding means comprises a releasable clamping element with means for holding the blade element parallel to the longitudinal extension axis, the extension portion further comprising at least one position adjustable stop to limit the free rotation of the holding means to provide a precise angular position and holding of the blade element relative to an adjacent sharpening element.
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Abstract
A fixture for controllably holding a blade and particularly a scissor or scissor element for precise sharpening and shaping including hollow grind and clamshell (convex) sharpening. The fixture comprises an articulable holding arm with at least two movable joints and an extension portion swivelly attached to one of the joints. The extension portion terminates in a holding member for the scissor or scissor element which holding member is freely concentrically rotatable relative to the longitudinal extension axis of the extension portion. The holding member comprises a clamping element for holding the scissor element parallel to the longitudinal extension axis. The extension portion further comprises a position adjustable stop to limit rotation of the holding member to provide a precise angular holding of the scissor element relative to an adjacent sharpening element.
31 Citations
7 Claims
- 1. A fixture for controllably holding a blade element for precise sharpening and shaping thereof, said fixture comprising an articulable holding arm with at least two movable joints and an extension portion, having a longitudinal extension axis, said extension portion being swivelly attached at one end of the extension axis to one of the joints, and said extension portion comprising holding means for the blade element at another end of the extension axis said holding means being freely concentrically rotatable relative to the longitudinal extension axis, wherein the holding means comprises a releasable clamping element with means for holding the blade element parallel to the longitudinal extension axis, the extension portion further comprising at least one position adjustable stop to limit the free rotation of the holding means to provide a precise angular position and holding of the blade element relative to an adjacent sharpening element.
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3. A fixture for controllably holding a blade element for precise sharpening and shaping thereof, said fixture comprising an articulable holding arm with at least two movable joints and an extension portion, having a longitudinal extension axis, said extension portion being swivelly attached to one end of the extension axis to one of the joints, and said extension portion comprising, at another end of the extension axis, holding means for the blade element, said holding means being freely concentrically rotatable relative to the longitudinal extension axis, wherein the holding means comprises a releasable clamping element for holding the blade element parallel to the longitudinal extension axis, the extension portion further comprising at least one position adjustable stop to limit the free rotation of the holding means to provide a precise angular position and holding of the blade element relative to an adjacent sharpening element;
- wherein said extension portion comprises two position adjustable stops which define a predetermined arc movement for the free rotation of the blade element with defined end points of said arc and wherein said extension portion further comprises separate means for adjusting the position of each of the two position adjustable stops.
- View Dependent Claims (4)
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5. A scissor sharpening and shaping device comprising at least one tier of a plurality of rotating sharpening wheels, with each of said wheels having effective sharpening surfaces which are all positioned either in planes parallel to each other or in a single plane, said device further comprising a fixture which is affixed to the device by means for attachment which provides guided movement of the fixture and scissor blade element held thereby, into predetermined angular positional relation with each of said sharpening wheels;
- wherein the fixture comprises an articulable holding arm with at least two movable joints and an extension portion, having a longitudinal extension axis, said extension portion being swivelly attached to one end of the extension axis to one of the joints, and said extension portion comprising, at another end of the extension axis, holding means for the scissor blade element, said holding means being freely concentrically rotatable relative to the longitudinal extension axis, wherein the holding means comprises a releasable clamping element having means for holding the scissor blade element parallel to the longitudinal extension axis, the extension portion further comprising at least one position adjustable stop to limit the free rotation of the holding means to provide a precise angular position and holding of the scissor blade element relative to an adjacent sharpening element.
- View Dependent Claims (6, 7)
Specification