Class 451/420 - Rotary abrading tool

Subclass of Class 451 - Abrading
Definition: Machine knife sharpening attachment in which the knife is
No. of patents: 38
Last issue date: 12/21/2010

Number	Title	Issue Date
7854650	Knife sharpener A knife sharpener comprises a base, a motor, a grinding wheel assembly, a rotary shaft and a spring. The working channel between the edge of the grinding disc and the grinding awl is automatically adjustable to accommodate different blade of different thickness. Whe...	12/21/2010
7431637	Saw-setting machine for saw chain It is to provide a saw chain sharpener such that while a saw chain is clamped at both ends by a holding plate, which is supported forward of a handy type electric motor, so as to stabilize its sharpening posture, a grinding tool such as a round rod-shaped grinding t...	10/07/2008
7390243	Sharpener for blades of food slicers A sharpener to sharpen the edge of a food slicer blade includes a non-planar abrasive surfaced rotatable disk mounted on a supporting structure. The supporting structure includes one or more surfaces designed to align with at least one of a push bar, thickness contr...	06/24/2008
7134937	Food product slicer with knife sharpener and associated knife guard A food product slicer with a rotatable slicer knife includes a knife sharpener and an associated knife guard assembly with a guard member positioned for protecting the edge of the knife when the sharpener is positioned in its standby, or non-sharpening state. ...	11/14/2006
7125325	Portable sharpening system for a dual-knife cutting machine A grinding apparatus (36) for a paper cutting mechanism (10) is shown and includes a coupler (38), for mounting on an upper rail (14) of the cutting mechanism (10), a motor-driven grinder (40), and an adjustable support (...	10/24/2006
6910959	Fixture for a grinding or polishing wheel A fixture (1) for guidance of a tool having a cutting edge with respect to the periphery of a rotating grinding or polishing wheel (2), comprising a frame structure that runs along the periphery (6) of the wheel and has a guide formed as a slot ...	06/28/2005
6709319	Sharpener assembly for a food slicer and related method A sharpener assembly for a food slicer includes a rotatable frame with a sharpening member and a truing member operatively connected for rotation with the frame. The frame is mounted on a food slicer to place the sharpening member and truing member on opposed sides ...	03/23/2004
6585578	Girinding wheel machine bracket adjustable in angle A grinding wheel machine bracket comprises a fixations eat having a long through hole to receive a screw for fastening the fixation seat with a grinding wheel machine. The fixation seat has a pivoting seat with an axial hole, and a pointer located at the ...	07/01/2003
6503135	Grinding device A chopper drum includes a plurality of knives distributed along its width and about its circumference. A grinding device is provided for automatically sharpening the knives, with a grinding stone of the grinding device having its movement automatically co...	01/07/2003
6110018	Apparatus and methods of sharpening cutting tools An adapter for use with a powered grinding tool having a driven grinding wheel has a pivotally mounting part on a body thereof, and a drill bit holder engageable with the mounting part in either of two orientations for sharpening a tip of a drill bit clam...	08/29/2000
5964648	Chipper knife grinding method and apparatus A method and apparatus for sharpening the knives of a chipper, with the knives remaining in a knife basket during sharpening, and the knife basket being removed from the chipper and placed in a knife basket carrier in which it is rotatably mounted. The kn...	10/12/1999
5941148	Automatic slitter blade sharpener A device for automatically sharpening the circular cutting edge of a disk-like blade while it is rotatably mounted in a blade cartridge is disclosed. The sharpener includes a coupling assembly adapted to matingly retain the cartridge in the same manner th...	08/24/1999
5755825	Sharpener for slitting blade A sharpening device for use with a continuous flexible band cutting blade. The sharpening device includes a pair of rotating abrasive wheels positioned on opposite sides of the cutting blade. The rotating wheels are mounted to a pivot plate on either side...	05/26/1998
5626065	Cutting device with automatic sharpener The present invention pertains to a device for cutting materials and including a straight blade 10, to which are connected two sharpening units 13, 14 with angulation complementary to that of the cutting edge of the blade. Each sharpening unit 13, 14 comp...	05/06/1997
5620363	Powered grinding tool A powered grinding tool (10) comprising a casing (16) in which is an electric motor (40) which drives a shaft (39) on which is carried a grinding wheel (20) at a work station. The tool casing has undercut slots (24) at opposite sides of its front face for...	04/15/1997
5618028	Power tool adapter An adapter (12) is of channel shape having longitudinal projections (25) at its respective sides for engagement with undercut grooves (24) in a face of a casing of a powered grinding tool (10) with which the adapter is intended to be fitter to sharpen hig...	04/08/1997
5609082	Lubrication aid for treating cutting blade and sharpener A method and apparatus deals with a cutter used for cutting a fabric or other material sheet having a layer of active or activatable adhesive disposed on it and provides a lubricant in gel form to be applied to the surfaces of the cutting implement to kee...	03/11/1997
5591072	Sharpening device for food slicer The invention is a sharpener for a knife of a food slicer. The sharpener includes a base assembly and a sharpener assembly. The base assembly includes a lever mounted thereto on a pivot; the lever carrying a cam member which extends therefrom. The sharpen...	01/07/1997
5241886	Apparatus and methods for cutting rods into lengths for cigarette makers A method and apparatus for cutting a longitudinally advancing a rod of tobacco-containing material into lengths including a cut-off wheel having two or more blades equally spaced around the wheel periphery, a sharpening stone driven independently by a mot...	09/07/1993
5209025	Process for sharpening the knives of a rotating drum and adjusting the fixed counter-knife cooperating therewith and device for carrying out this process In a fodder harvesting machine, the device disclosed comprises a rotating chopping drum (1) and a fixed counter-knife (25) cooperating with the knives (2) of the drum (1), as well as a retractable wheel (21) adapted to be moved in rotation in order period...	05/11/1993
5152105	Device for sharpening rotary blades A device for sharpening rotary blades driven about a fixed axis of rotation, as widely used in cigarette manufacturing machines, including a pair of mutually coaxial grinding wheels distanced one from the other, angled in relation to the plane occupied by...	10/06/1992
5142946	Sharpener for circular saws A base member has a clamping surface and an arm extending from the base member at an angle. The arm is attached to the base member for pivotal movement and supports a power grinder for grinding a saw blade tooth by pivotal movement of the arm. The base me...	09/01/1992
4843767	Automatic forage harvester knife sharpening system A material chapping machine, such as a forage harvester, includes a system for automatically controlling the movement of a sharpening stone to sharpen the knives of a rotating cutterhead. Motors move the stone radially towards and away from the cutterhead...	07/04/1989
4821613	Method and apparatus for log saw blade sharpening A modified grinding process for smooth circular saw blades whereby the blade rate of rotation is constantly varied to avoid the system natural frequencies and improve the resulting saw surface edge....	04/18/1989
4762040	Blade sharpening and guide mechanism A method and an apparatus for sharpening a cutting blade of a numerically controlled cutting apparatus which includes a conveyor for supporting material to be cut and a cutting head assembly mounted on a carriage disposed above a cutting surface of the co...	08/09/1988
4746330	Method and apparatus for lapping reel mowers The apparatus and method of this invention pertain to the sharpening of the blades of a reel mower having a framework about the reel. The apparatus comprises a belt having protuberances thereon, an assembly of pulleys and a drive motor for driving the bel...	05/24/1988
4732064	Apparatus and method for sharpening edges of reciprocating blade A cutting machine for cutting layups of sheet material has a reciprocating blade suspended from a platform above a support surface for the material. A blade sharpener is also suspended from the platform and comprises at least one sharpening wheel for enga...	03/22/1988
4713950	Device adapted to move the sharpening grinding wheels in a leather splitting machine close to and away from a cutting blade A device to move the sharpening grinding wheels in a leather splitting machine close to and away from a cutting blade. The grinding wheels are rotatably supported on the end portions of respective arms the other ends of which are pivoted on a carriage. Th...	12/22/1987
4643061	Rotary blade sheet material cutter with sharpener A cutter for cutting fabric and similar sheet materials spread on a supporting surface includes a rotary cutting blade and an associated sharpening element in the form of a rotary sharpening disk or similar element. A simplified sharpening apparatus and p...	02/17/1987
4584917	Automatic blade diameter compensation for log saws An apparatus for transversely cutting logs of web material which are sequentially advanced along a first path and a rotating disc blade is mounted in said apparatus for movement in a second path through said first path from one side of the other of the fi...	04/29/1986
4503643	Sharpener assembly for the cutting cylinder of a crop harvester The cutter box which houses a cutting cylinder on a harvester has an access opening in its top wall through which an abrasive, full-length sharpening stone may be alternately inserted and removed to engage and sharpen the peripherally located knives of th...	03/12/1985
4472990	Cutting device for continuous rods of smoking products A device for cutting continuous rods of smoking products, in which a rotary cutting head is provided with a radial blade inclined with respect to the axis of rotation of the head, the blade being sharpened, upon each rotation of the head, by a frusto-coni...	09/25/1984
4442599	Sharpener construction for fabric cutting machine A sharpener drive for the straight blade of a fabric cutting machine receives its motion from the crank wheel which drives the blade. A drive wheel, which selectively engages the crank wheel, drives a gear train which drives a gear mounted in splined rela...	04/17/1984
4331011	Automatic roughing machine A multi-station machine for marginal roughing and toe scouring of shoe bottoms has a turret arrangement, carrying a plurality of shoe supports. At a marginal roughing station two rotary roughing tools operate along opposite marginal portions, during movem...	05/25/1982
4294047	Method of sharpening lateral edges and end edges of a blade during reciprocation thereof The leading and lower cutting edges of a reciprocating cutting blade on a sheet material cutting apparatus are sharpened by elevating the blade from a cutting region proximate the sheet material supporting surface of the apparatus to a sharpening region a...	10/13/1981
4173160	Machine for cutting the lead ends of components mounted at printed-wiring boards A machine for cutting the lead ends of components mounted at printed-wiring boards, also referred to as printed circuits, comprising at least one rotating driven cutting disk, a grinding device for grinding such cutting disk, the cutting disk and the grin...	11/06/1979
4065880	Sharpener for cut-off having a helical knife A cut-off mechanism for a cigarette or other similar continuous rod making machine comprises a rotating helical knife and a sharpening device for sharpening the knife, characterized in that the sharpening device comprises two rotary sharpening members arr...	01/03/1978
4033214	Blade sharpener A cutting apparatus for cutting pattern pieces from layups having a low stack height employs a cutting head having a small reciprocating blade suspended from a carriage which moves over the layup. The drive motors for reciprocating the blade and orienting...	07/05/1977

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Class 451/420 - Rotary abrading tool