Blade sharpening guide

Claim 2

A blade sharpener adapted to be used for sharpening the cutting edge of a blade by moving the edge faces against a surface of a sharpening member, said sharpener comprising, a pair of substantially identical frame members arranged together in mirror image relationship to clamp and guide a blade during sharpening of the cutting edge on a sharpening surface to obtain a given edge angle, each said frame member including a plurality of clamping fingers having clamping faces adapted to engage the side of a blade, the fingers of one frame member aligning with the fingers of the other frame member to define a plurality of sets of clamping fingers between which the blade is clamped, an elongated bar-shaped guide member projecting outwardly from the plane of the fingers such that a guide member is provided on both sides of the sharpener, said elongated bar-shaped guide members adapted to extend substantially parallel to the cutting edge of the blade and engage the sharpening surface to guide generation of the edge angle in sharpening the cutting edge, first means at each set of clamping fingers for bringing said frame members toward and away from each other into blade clamping and unclamping positions and for adjusting said fingers to clamp blades of various thicknesses, and second means coacting with each said first means to adjust the relative planar relation of the clamping faces of each set of clamping fingers into essentially parallel relation with respect to the sides of the blade clamped thereby.

Claim 3

A blade sharpener as defined in claim 1, wherein said first means includes cap screws having heads engaging one of the frame members and shanks threadedly received by the other of the frame members.

Claim 4

A blade sharpener as defined in claim 1, wherein said second means includes set screws threadedly received in one of the frame members and bearing against the other of the frame members.

Claim 5

A blade sharpener as defined in claim 2, wherein said Second means includes set screws threadedly received in one of the frame members and bearing against the other of the frame members.

Claim 6

A blade sharpener as defined in claim 1, wherein the length of each set of clamping fingers is equal.

Claim 7

A blade sharpener as defined in claim 1, wherein the length of one set of clamping fingers is longer than another set.

Claim 8

A blade sharpener adapted to be used for sharpening the cutting edge of a blade by moving the edge faces against a surface of a sharpening member, said sharpener comprising, a pair of substantially identical frame members arranged together in mirror image relationship to clamp and guide a blade during sharpening of the cutting edge on a sharpening surface to obtain a given edge angle, each said frame member including a pair of spaced coplanar clamping fingers each having a clamping face adapted to engage the side of a blade, a web portion extending between the fingers at one end, the fingers of one frame member aligning with the fingers of the other frame member to define a pair of sets of clamping fingers between which the blade is clamped, an elongated bar-shaped guide member projecting outwardly from the web portion such that a guide member is provided on both sides of the sharpener, said elongated bar-shaped guide members adapted to extend substantially parallel to the cutting edge of the blade and engage the sharpening surface to guide generation of the edge angle in sharpening the cutting edge, first means at each set of clamping fingers for bringing said frame members toward and away from each other into blade clamping and unclamping positions and for adjusting said fingers to clamp blades of various thicknesses, and second means coacting with each said first means to adjust the relative planar relation of the clamping faces of each set of clamping fingers into essentially parallel relation with respect to the sides of the blade clamped thereby.

Claim 9

A blade sharpener adapted to be used for sharpening the cutting edge of a blade by moving the edge faces against a surface of a sharpening member, said sharpener comprising, a pair of substantially identical frame members arranged together in mirror image relationship to clamp and guide a blade during sharpening of the cutting edge on a sharpening surface to obtain a given edge angle, each said frame member including a pair of spaced coplanar clamping fingers each having a clamping face adapted to engage the side of a blade, a web portion extending between the fingers at one end, the fingers of one frame member aligning with the fingers of the other frame member to define a pair of sets of clamping fingers between which the blade is clamped, an elongated bar-shaped guide member projecting outwardly from the web portion such that a guide member is provided on both sides of the sharpener, said elongated bar-shaped guide members adapted to extend substantially parallel to the cutting edge of the blade and engage the sharpening surface to guide generation of the edge angle in sharpening the cutting edge, first means at each set of clamping fingers for bringing said frame members toward and away from each other into blade clamping and unclamping positions and for adjusting said fingers to clamp blades of various thicknesses, and second means coacting with each said first means to adjust the relative planar relation of the clamping faces of each set of clamping fingers into essentially parallel relation with respect to the sides of the blade clamped thereby.