Apparatus for sharpening a knife blade or the like
AssigneeBonni S. Carris
InventorDonald R. Johannsen
Life of this patent
Estimating the term…
Abstract
An improved apparatus for sharpening the cutting edge of a knife blade or other cutting implement including a frame assembly having clamping means for securing the blade thereto and guide means for maintaining an abrading means or an abrading assembly in a substantially constant angular relationship with the blade. The apparatus also includes means for accommodating a variety of blade sizes and thicknesses as well as means for performing abrading operations varying from coarse to fine on the blade without changing or rotating the abrading assembly. Handle means are also provided and include shield means for protecting the hands of the user.
Claims19
An apparatus for manually sharpening a cutting implement, said apparatus comprising:
- a frame assembly having securing means thereon for removably securing said cutting implement in a fixed position relative to said frame assembly;
- abrading means including a plurality of abrading members engageable with said cutting implement and slidably movable with respect to said cutting implement during said engagement for abradingly forming a sharpened cutting edge portion thereon;
- said abrading means including an elongated body portion, an elongated rod-like member connected to said elongated body portion and being pivotally engageable with said frame assembly, said plurality of abrading members secured to said body portion with each having an abrading surface of a different coarseness and further being selectively engageable with said cutting implement at said substantially constant angular relationship therewith during the slidable movement relative thereto, said abrading members being secured to said body portion in longitudinal alignment with each other with their abrading surfaces oriented generally in the same direction;
- and
- said abrading means including handle means on a rearward side thereof adapted to be gripped by a user and shield means disposed generally between said handle means and said abrading member, said shield means extending laterally outwardly from said handle means a distance at least equal to the lateral width of said abrading member, said shield means extending in a direction to be generally rearward of each of said abrading surface.
An apparatus for manually sharpening a knife blade or the like, said apparatus comprising:
- a pair of clamping members pivotally connected to one another for clampingly engaging said blade therebetween;
- a pair of guide members extending from said clamping members in generally opposite transverse directions relative to said blade, each of said guide members having at least one guide opening extending therethrough;
- and
- an abrading assembly having at least one abrading member thereon and including an elongated rod-like member, said rod-like member being selectively insertable into either of said guide openings in pivotal engagement with the respective one of said guide members, said abrading member being slidably movable in engagement along a cutting edge portion of said blade, said guide member maintaining said abrading member in a sustantially constant angular relationship with said blade during said slidable movement in order to form a generally uniform sharpened cutting edge portion on said blade, said abrading assembly including a plurality of said abrading members having abrading surfaces thereon, each of said abrading members being of a different coarseness and further being selectively engageable with said blade at said substantially constant angular relationship therewith during the slidable movement relative thereto, said abrading members being disposed in a generally longitudinal end-to-end relationship with one another and having their abrading surfaces oriented generally in the same direction,
- said abrading assembly including an elongated body member secured to one end of said rod-like member, said body member having a front surface with a longitudinally extending groove therein, said abrading members supported in said groove and having working surfaces extending forwardly in clearance with the confines of said front surface and of said elongated body member,
- said body member having guard members extending substantially outwardly transversely from opposite sides of said body member and located rearwardly of said working surfaces of said abrading members.
An apparatus for manually sharpening a knife blade or the like, said apparatus comprising:
- a pair of generally similarly shaped clamping members pivotally interconnected with one another, resilient biasing means for resiliently biasing said clamping members away from one another in a spaced-apart relationship in order to facilitate insertion of said blade therebetween at one end of said clamping members, securing means actuable for urging said clamping members toward one another to clampingly secure said blade therebetween;
- a pair of generally similarly shaped guide members integrally formed with a corresponding one of said clamping members and extending generally in opposite outward directions on opposite sides of said clamping members, said guide members having a plurality of elongated guide openings therethrough;
- pivot means on said clamping members located at the end of said clamping members opposite said one end, said securing means comprising a releasable fastener assembly connected between said clamping members at a position between said one and opposite ends of said clamping members;
- an abrading assembly having at least one hone member thereon, said hone member having an abrading surface, said abrading assembly further including a rod-like member selectively insertable into any of said elongated guide openings in pivotal engagement with either of said guide members, said hone member being slidably movable in engagement along a cutting edge portion of said blade, said guide members being adapted to maintain said hone member in a substantially constant angular relationship with said blade during the slidable movement when said rod-like member is inserted in a preselected one of said guide openings in order to form a generally uniform sharpened cutting edge portion on said blade.
An apparatus for manually sharpening a knife blade or the like, said apparatus comprising:
- a pair of clamping members, said clamping members having clamping surfaces at one end thereof for clampingly engaging said blade therebetween;
- hinge means for pivotally interconnecting said clamping members, said hinge means being located generally at the opposite end of said clamping members from said clamping surfaces, said hinge means including an integral pin-like protrusion on one of said clamping members and an integral socket portion on the other of said clamping members, said socket portion being adapted to freely axially receive and to radially interlockingly hold said pin-like protrusions to define a hinge connection for pivotal movement between said clamping members;
- fastener means connected to said clamping members at a location between said clamping surfaces and said hinge means and being selectively actuable for urging said clamping members pivotally toward one another in order to clampingly engage said blade between said clamping surfaces;
- at least one guide member extending from one of said clamping members in a generally transverse direction relative thereto, said guide member having at least one guide opening extending therethrough;
- and
- an abrading assembly having an elongated body portion with at least one abrading member thereon and further including an elongated rod-like member secured to said body portion, said rod-like member insertable into said guide opening in pivotal engagement with said guide member, said abrading member being slidably movable in engagement along a cutting edge portion of said blade.
Dependencies are inferred from the claim text.