Abstract A portable knife sharpener comprising two duplicate bar or narrow plate-like clamp members connected together adjacent to but spaced from their one ends for pivotal movement about axes generally parallel with the planes thereof and having facing planar surfaces with linear edges at their ends closest to their pivotal connection. A thumb screw is threaded in one of the clamp members intermediate its end opposite to said one end and its pivotal connection with the other clamp member the end of which clamp screw abutts the other clamp member. A discrete flange or angle-like member is pivotally connected by one flange part thereof to the side of each of the clamp members not facing the other clamp member with the other flange part of the member extending normal to the planar surface of the clamp member to which it is connected. Each of said angle-like members has a plurality of apertures therein spaced like distances from the planar surface of the clamp member to which it is connected. In one embodiment apertures are laterally offset from the clamp member.
Inventors
👤 Howard R. Longbrake
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 09:57
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/54
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
217 words
A portable work holder for positioning and maintaining an article to be sharpened, such as, a knife, in predetermined relative position to a sharpening member or tool for the purpose of sharpening the same with a predetermined like bevel on both sides of its cutting edge comprising two duplicate clamp members including duplicate relatively long narrow members having opposed planar clamping surfaces adjacent to one of their ends and the opposite sides of said ends beveled endwise, means adjacent to but spaced from said one ends of said members pivotally connecting said members together, means between said first mentioned means and other ends of said members opposite to said one ends thereof for moving said one ends of said members toward one another, each of said members having a part provided wih at least one aperture extending generally normal to said planar surface of the member of which it is a part and in the direction away from the other member, said at least one aperture in said parts of said members each being located at a like fixed distance from said planar surface of said member of which each is a part whereby the center plane of a knife blade clamped between said planar surfaces will be exactly midway between corresponding apertures of the clamp members.
Claim 2
Dependent Claim
217 words
A portable work holder for positioning and maintaining an article to be sharpened, such as, a knife, in predetermined relative position to a sharpening member or tool for the purpose of sharpening the same with a predetermined like bevel on both sides of its cutting edge comprising two duplicate clamp members including duplicate relatively long narrow members having opposed planar clamping surfaces adjacent to one of their ends and the opposite sides of said ends beveled endwise, means adjacent to but spaced from said one ends of said members pivotally connecting said members together, means between said first mentioned means and other ends of said members opposite to said one ends thereof for moving said one ends of said members toward one another, each of said members having a part provided wih at least one aperture extending generally normal to said planar surface of the member of which it is a part and in the direction away from the other member, said at least one aperture in said parts of said members each being located at a like fixed distance from said planar surface of said member of which each is a part whereby the center plane of a knife blade clamped between said planar surfaces will be exactly midway between corresponding apertures of the clamp members.
Claim 3
Dependent Claim
94 words
A portable work holder as claimed in claim 1 wherein said apertured parts of the relatively long narrow members extend laterally beyond at least one longitudinal side of the members and each extending part has said at least one aperture therein which is laterally beyond said longitudinal side and a like distance from the plane of the planar surface of the member of which it is a part as is the corresponding aperture of the other member from the plane of the planar surface of the other member of which it is a part.