Abstract: A holder for sharpening and faceting includes a cylindrical body having a first end, a second end and an opening formed transversely through the body between the first end and the second end. The opening has a tool support surface. An adjustable clamping component has a rotatably adjustable fastening plate positioned within the opening, where the fastening plate has a top surface and a tool engaging surface to hold the tool against the tool support surface and a plurality of predefined plate end openings. A plurality of roller members are disposed within a longitudinal raceway formed in a lower portion of the body below the opening. The roller members are aligned to roll parallel to the longitudinal axis of the cylindrical body and the axis of rotation of the roller members is perpendicular to the longitudinal axis of the cylindrical body.

Abstract: A skate sharpening holder includes an anvil plate surface that is adapted to engage with a skate blade so that the skate blade is securely held with respect to the anvil during skate sharpening or contouring. The anvil plate surface can include pins or openings that would engage with respective openings or pins in a skate blade to hold the skate blade in place.

Abstract: A shaving system includes a razor having a handle and a safety housing with a blade extendably received within the safety housing. An integrated sharpening system incorporates an armature receiving the razor, the armature being movable from a first position for attachment and extraction of the razor and a second position for sharpening of the blade. A sharpening mandrel is provided with a first sharpening surface for sharpening a first side of the blade and a second surface for sharpening of a second side of the blade. The sharpening mandrel is rotatable from a first position for engagement of the first sharpening surface to a second position for engagement of the second sharpening surface. The sharpening mandrel is laterally oscillated for sharpening of the blade. A controller is provided for positioning of the armature and sharpening mandrel.

Abstract: A self sharpening razor system includes a razor having a handle and a safety housing with a blade extendably received within the safety housing. An integrated sharpening system incorporates an armature receiving the razor and movable between a first position for attachment and extraction of the razor and a second position for sharpening of the blade. A sharpening mandrel is provided with sharpening surfaces for sharpening first and second sides of the blade. The sharpening mandrel is rotatable from to engage the first sharpening surface and second sharpening surface. The sharpening mandrel is laterally oscillated for sharpening of the blade. In alternative embodiments, sharpening is accomplished with reciprocating honing plates with available stropping wheels or integrated honing and stropping wheels with exposure adjustability and sharpness adjustability via honing time variance. A controller is provided for positioning of the armature and sharpening mandrel.

Abstract: A scraper in combination with a sharpener provides consistent sharpening of the scraper blade. The scraper has a scraper blade, blade holder, and bearing surface. The sharpener has a sharpening element and a guide generally parallel to the sharpening element. The bearing surface of the scraper fits the guide of the sharpener and the scraper blade contacts the sharpening element. The scraper can be drawn along the guide to draw the blade along the sharpening element. The bearing surface and guide keep the blade in consistent and correct relation to the sharpening element to provide proper sharpening of the scraper blade. Adaptors may be used to sharpen additional types of blades or tools on the sharpener and different types of sharpening elements may be used in the sharpener.

Abstract: A tool sharpening assembly (100) suitable for sharpening cutting tools (140,350,366,546,562). In some embodiments, a wedge-shaped port is formed between a rotational first abrasive surface (160,262) and a stationary second abrasive surface (162,264) to sharpen a distal cutting edge (146) of a cutting tool (140,230,546). In other embodiments, a cooling mechanism (136,326,330,334,338) actively draws heat generated during a sharpening operation from a tool (140) and through a tool support structure (170,234,328,332) contactingly supporting the tool, in further embodiments, a rotatable abrasive slotted disc (364) comprises at least one inspection aperture (372) formed from an interior sidewall (390) with upper and lower leading and trailing edges (396,398,400,402) of non-uniform separation distance. In other embodiments, a cylindrical drum abrasive member (572) is provided with an associated stationary support plate (574).

Abstract: A motorized knife sharpener and related methods of sharpening knives, wherein the knife sharpener is capable of sharpening knives of varying types and styles. The motorized knife sharpener includes a housing, motorized grinding assembly and an adjustable blade guide assembly. The adjustable blade guide assembly includes a selector switch accessible to a user on a front portion of the housing. With the selector switch, the user is able to selectively adjust a presentation angle defined by a blade guide relative to a grinding wheel. The selector switch is operably coupled to the blade guide with a cam assembly that pivots the blade guide with respect to the grinding wheel so as to vary the blade presentation angle.

Abstract: A knife edge enhancing apparatus includes a support having a support surface and knife blade clamping structure mounted to the support and located above the support surface. An object having a knife edge modifying surface which could be abrasive or non-abrasive is mounted to a holder which is freely slidable on the support surface so that the object surface can be manually moved into contact with a knife edge facet. At least one of the clamping structure and the object surface is angularly adjustable to control the angle of contact of the object surface with the knife edge facet.

Abstract: Apparatus and method for sharpening a tool, such as a chisel. A sharpening guide applies a clamping force to secure the tool and advances a beveled leading edge surface of the secured tool against an abrasive surface to sharpen a cutting edge while the guide is in an upright orientation. An alignment plate nestingly receives the guide in an inverted orientation to align the tool prior to sharpening. During alignment, a back surface of the tool slidingly contacts an upper plate surface and the cutting edge contactingly abuts an alignment feature which projects from the plate surface. In some embodiments, the alignment feature comprises a removable alignment pin selectively insertable into a plurality of spaced apart apertures, each providing a final bevel angle for the sharpened tool.

Abstract: A blade holding jig arrangement for either grinding or honing a blade including a mounting bracket assembly with an elongate guide bar and a device for rigidly supporting the guide bar. A support arm can be pivotally mounted on the guide bar by means of a tubular support mounted on one end of the arm and extending perpendicular thereto. The guide bar extends through a passageway in the tubular support. The support arm can be moved along the guide bar for grinding. A clamp unit for clamping a blade includes a U-bracket with two legs and two clamping jaws adjustably mounted on the U-bracket between the legs. The clamp unit is attached to an end section of the arm remote from the one end of the arm. The clamping jaws can be moved towards one another in order to clamp the blade.

Abstract: A blade sharpening assembly generally including a pair of clamping members disposable in coextensive relationship, each providing end portions for receiving a blade therebetween with a cutting edge thereof disposed beyond the ends thereof; means interengaging the clamping members functional as a fulcrum in permitting the end portions to displace in clamping a blade therebetween; means interconnecting the clamping members for angularly displacing the clamping members about the fulcrum; a guide member pivotally connected to a second end portion of each of the clamping members, pivotal between a first position disposed coextensively with a connected clamping member, and a second position at an angle relative to the connected clamping member, alignable with the guide member of the other of the clamping members, when the clamping members are disposed in coextensive; means interconnectable between the guide members when the guide members are disposed in alignment for releasably retaining the guide members in alignm

Abstract: A clamping-type knife sharpener is designed with anti-rocking blade holding capability. The knife sharpener includes first and second clamping members and a clamping member adjustment mechanism configured to adjustably manipulate the clamping members into clamping engagement with a knife blade to be sharpened. The knife blade is maintained by the clamping members in orientation with a planar knife sharpener axis extending along a centerline of the knife blade that passes through an edge of the knife blade. First and second deformable clamping boots are respectively disposed on the first and second clamping members. The first and second clamping boots have respective first and second clamping faces adapted to engage the knife blade when the clamping members are in the clamping engagement with the knife blade. At least one of the clamping faces has a blade-conforming contour that substantially conforms to a surface contour of the knife blade and restrains the knife blade against rocking during sharpening.

Abstract: A blade sharpening assembly generally consisting of a base member; a clamping member disposed on the base member, cooperable therewith for releasably securing a blade thereon with a cutting edge thereof protruding therefrom; a guide post mountable on the base member; a carrier member mounted on the guide post, displaceable along a length thereof, including means for releasably securing the carrier member at selected positions along the length of the guide post; and a tool for sharpening a blade secured between the base and clamping members, including a handle section, an elongated section engageable with a support surface of the carrier member and a honing section engageable with a cutting edge of a blade secured between the base and clamping members when the elongated section engages the support surface of the carrier member.

Abstract: An apparatus for sharpening a knife comprising a clamping mechanism for holding the knife and a base rod mounted adjacent and perpendicular to said clamping mechanism. Two sharpening blocks are located on either side of the clamping mechanism and are slidably mounted on guide rods extending vertically from the base rod. The guide rods are movably fixed to any point along the base rod and can be moved about the selected point in two directional planes that are perpendicular to each other.

Abstract: A motorized knife sharpener and related methods of sharpening knives, wherein the knife sharpener is capable of sharpening knives of varying types and styles. The motorized knife sharpener includes a housing, motorized grinding assembly and an adjustable blade guide assembly. The adjustable blade guide assembly includes a selector switch accessible to a user on a front portion of the housing. With the selector switch, the user is able to selectively adjust a presentation angle defined by a blade guide relative to a grinding wheel. The selector switch is operably coupled to the blade guide with a cam assembly that pivots the blade guide with respect to the grinding wheel so as to vary the blade presentation angle.

Abstract: Method of and apparatus for indexing a workpiece to a tool at a predetermined angle of orientation, using a bubble level to establish a horizontal reference plane. The bubble level may be pivotally fixed to a housing of a jig which may incorporate a magnet for adhering the housing to a magnetically responsive workpiece. The bubble level may be secured at a particular pivotal orientation such that when the workpiece is held against the cutting or abrading surface of a tool, the workpiece may be manually maintained at the predetermined angle of orientation such that a ground surface disposed at a predetermined angle on the workpiece may be formed while holding the workpiece manually. The jig may incorporate an adjustable leg to assist in tightening the bubble level at the particular pivotal orientation.

Abstract: A clamping-type knife sharpener is designed with anti-rocking blade holding capability. The knife sharpener includes first and second clamping members and a clamping member adjustment mechanism configured to adjustably manipulate the clamping members into clamping engagement with a knife blade to be sharpened. The knife blade is maintained by the clamping members in orientation with a planar knife sharpener axis extending along a centerline of the knife blade that passes through an edge of the knife blade. First and second deformable clamping boots are respectively disposed on the first and second clamping members. The first and second clamping boots have respective first and second clamping faces adapted to engage the knife blade when the clamping members are in the clamping engagement with the knife blade. At least one of the clamping faces has a blade-conforming contour that substantially conforms to a surface contour of the knife blade and restrains the knife blade against rocking during sharpening.

Abstract: A blade sharpening assembly generally consisting of a base member; a clamping member disposed on the base member, cooperable therewith for releasably securing a blade thereon with a cutting edge thereof protruding therefrom; a guide post mountable on the base member; a carrier member mounted on the guide post, displaceable along a length thereof, including means for releasably securing the carrier member at selected positions along the length of the guide post; and a tool for sharpening a blade secured between the base and clamping members, including a handle section, an elongated section engageable with a support surface of the carrier member and a honing section engageable with a cutting edge of a blade secured between the base and clamping members when the elongated section engages the support surface of the carrier member.

Abstract: A blade, such as the blade of a precision shear, having a cutting angle which changes progressively along the length of the blade through a predetermined angular measure is sharpened by coupling the blade with an articulated arm assembly through a drive mechanism which rotates the blade about a longitudinal direction in response to movement of the blade along the longitudinal direction, as the blade is drawn across a sharpening surface. The drive mechanism includes a cam and follower for rotating the blade through an angular displacement corresponding to the predetermined angular measure of the change in the cutting angle so as to preserve the changing cutting angle. The drive mechanism is selectively uncoupled to permit free manual rotation of the blade as the blade is drawn across the sharpening surface for finishing the blade subsequent to the sharpening operation. The drive mechanism accommodates blades of both right-handed shears and left-handed shears.

Abstract: A method and apparatus for sharpening clockwise rotating standard blades, counter-clockwise rotating standard blades and mulching style blades of either clockwise or counter-clockwise rotation is provided. The present invention comprises a base with a blade fixture which is reversible to accommodate both clockwise and counter-clockwise rotating blades. Uprights, a slide shaft, a slide bushing and a handle shaft connected to a disc grinder provide a means for setting a primary cutting angle for sharpening the primary cutting edges of a blade. An adjusting wheel rotatable attached to the handle shaft and pivotably coupled to the disc grinder provide a means for quickly and easily adjusting the cutting angle in order to accommodate sharpening the secondary cutting edges of a mulching style blade and returning the disc grinder back to its original cutting angle.

Abstract: A sharpening guide assembly to be removably attached to a sharpening stone to provide for smooth, controlled and accurate motion when sharpening a blade is provided. The assembly includes a body portion forming a platform adapted to receive the sharpening tool. A magnet is disposed within a recess formed in the platform. The magnet aids in removably attaching the sharpening tool to the guide assembly. The body portion includes guide rails to stabilize and aid in the attachment of the sharpening tool to the guide assembly. A guide rod is affixed to the body portion. The sharpening guide assembly may be used with a sharpening tool including metal and having a substantially planar sharpening surface. A clamping device for holding a blade to be sharpened is slidably coupled to the guide rod of the assembly and is drawn back and forth along the guide rod for sharpening the blade.

Abstract: A hand-operated blade sharpener providing engagements of a blade by an abrasive stone at pre-selected angles to the blade is disclosed.

Abstract: A tool for setting the grind angle for sharpening jigs accurately and repeatably positions a movable support arm so that a consistent angle is ground into chisels regardless of the grinding wheel diameter and particular chisel.

Abstract: A device or tool setter has the purpose of setting the position of a support bar, adjustably connected to a grinding machine, in relation to a rotatable grindstone of the machine for obtaining a desired edge angle of a tool supported for grinding by the support bar. The device is provided with discs for defining two contact points with the grindstone and a hole for connection to the support bar.

Abstract: A device for grinding a cutting tool uses a rotatable grindstone and a tool holder for mounting the cutting tool. The device guides the tool, mounted in the tool holder, along an intended plane, which is tangential to a peripheral surface of the rotatable grindstone, using a practically linear contact between the rotatable grindstone and the cutting tool. By moving the tool holder, with the mounted cutting tool, along the intended plane, this plane is transferred to an unbevelled side of the cutting tool.

Abstract: A motorized knife sharpener includes means of for sharpening heavy, medium, and fine blades at angles appropriate to the cutting edges of such blades.

Abstract: A honing guide and bevel setting jig for removable attachment to the honing guide to properly position the angle and projection of a tool to be sharpened in the jig to enable the tool to be honed at the proper angle and position. An adjustable roller that contacts an abrasive surface during use of the guide facilitates formation of micro bevels. A tool securing bar having a generally triangular shape in the bar's middle section forces the arris-defining back of the tool being honed against a reference surface in the guide by tightening thumb nuts around threaded studs projecting from the bar. Jigs for use with both square and skew edge chisel and blades are described. A concave surface clamp bar honing guide provides enhanced gripping of the tool being honed, and wedges and adjustable structures expand the range of bevel angles that can be honed.

Abstract: A sharpening holder for manually-sharpening a cutting edge to be honed over a honing surface includes a cylindrical body having a first end, a second end and an opening formed through the body between the first end and the second end, the opening having a tool support surface, an adjustable clamping component having a rotatable fastening plate positioned within the opening wherein the fastening plate has a tool engaging surface to hold the tool against the tool support surface and a top surface with skew angle indicia, and a plurality of roller members disposed within a longitudinal raceway formed in a lower portion of the body below the opening wherein the plurality of roller members are aligned parallel to the longitudinal axis of the cutting edge to be sharpened and wherein the axis of rotation of the plurality of roller members is perpendicular to the longitudinal axis of the cutting edge to be sharpened.

Abstract: The honing jig has a base on which a whetstone or other abrasive substance is mounted. A pair of spaced guide rods extends the length of the base. A carriage is mounted to tubes which slide along the rods and through which the guide rods extend. The blade to be sharpened is held to the carriage by a clamp and the clamp swivels on the carriage to allow the inclination of the blade relative to the whetstone to be adjusted. The angle of the guide rods can be adjusted to permit fine adjustment of the inclination of the blade.

Abstract: A sharpening device for the blade of a tool such as a chisel or plane is in two parts. The first is a jig into which the blade is inserted with its tapered end projecting some distance beyond the jig. This distance is related to the angle to which the blade is to be sharpened. The second part is a marked reference member which is brought into a position alongside the jig. The blade is advanced through the jig until its tip reaches a marking on the reference member corresponding to the required sharpening angle for the tool. The tool is then clamped in the jig. The jig incorporates a roller which rolls on the sharpening stone while the tapered tip of the blade is sharpened by contact with the stone.

Abstract: A sharpening holder for manually-sharpening a cutting edge to be honed over a honing surface includes a body, an adjustable clamping component, and a plurality of roller members. The body has a first end, a second end and a tool support surface between the first end and the second end. The adjustable clamping component has a fastening plate positioned against the tool support surface. The fastening plate has a tool engaging surface to hold the tool against the tool support surface. The plurality of roller members are attached to a lower portion of the body adjacent the second end where the plurality of roller members are configured to allow the body to roll in a direction selected from the group consisting of sideways and in an arc on the honing surface causing the cutting edge of the tool to move parallel to the honing surface instead of perpendicular to the honing surface.

Abstract: A device and method for sharpening a mower blade are provided, in which a mounting device for mounting a rotary blade having two opposite cutting edges to be sharpened, wherein the mounting device is capable of positioning the blade in a first fixed state and a second, axially pivoting state. One or more grinding head assemblies are each positioned on an opposite end of the blade, wherein the grinding head assemblies respectively grind the two opposite cutting edges to be sharpened. A control system controls movement of the two grinding head assemblies.

Abstract: A holder, guide, or jig for sharpening tools is disclosed, in which the jig holds and orients a tool to be sharpened to properly align the tool on or against abrasive wheels, discs, or sharpening stones, thereby creating a fine, square, beveled edge on the tool, at a predetermined and accurately reproducible angle.

Abstract: An orbital rotary blade sharpener for sharpening rotary cutter blades and other rotary blades includes a bottom blade holding portion having a center and a perimeter edge, a top blade holding portion rotatably connectable to said bottom blade holding portion, having a perimeter and a center, a central shaft portion extending from said bottom blade holding portion through said top blade holding portion over which a rotary blade can be fitted, a radial shaft portion extending through said top blade holding portion positioned between the perimeter and the center of the top blade holding portion, and grinding portion connected to said radial shaft portion, and within said top blade holding portion, positioned to be orbitally revolvable around said bottom blade holding portion center and contactable with a blade held between said top and bottom blade holding portions.

Abstract: An infinitely adjustable knife sharpener apparatus is provided. The apparatus comprises a clamping mechanism having a first clamp member and a second clamp member for securing a knife blade therebetween. At least one infinitely adjustable guide rod assembly is also included. For example, an infinitely adjustable guide rod can be employed to determine an angle to which a knife blade is sharpened. Additionally, or alternatively, an infinitely adjustable guide loop can be included to determine an angle to which the knife blade is sharpened. Further, the apparatus is adjustable via a plurality of apertures in at least one of the first and second clamp members. Repositioning the guide rod assembly along a length of the first and/or the second clamp members changes the sharpening angle of the apparatus. A swivel block can also be included to facilitate foldability of the guide rod assembly.

Abstract: A device for use in the manual sharpening of arrow broadheads, razor blades and the like includes a unique symmetrical clamp and axle assembly having interchangeable, matched pairs of special purpose jaw members for gripping blades of differing configurations. When coupled to the frame, the clamp and axle assembly is freely rotatable, and this free rotation automatically aligns the length of the edge of the blade with the surface of a whetstone. Additionally these rotational and self-aligning capability enable the user to service both sides of the blade's edge with a single blade clamping operation, by manually rotating the clamp 180 degrees between passes along the surface of the whetstone.

Abstract: A method for forming a cutting edge along an edge portion of a blade stock, wherein the method includes moving the blade stock with respect to a first cutting element rotating about a first rotational axis, the first rotational axis forming one of an acute angle and a perpendicular angle with respect to the cutting edge, and contacting the edge portion and the first cutting element and forming a first cutting surface along the edge portion. The method may also include moving the blade stock with respect to a second cutting element rotating about a second rotational axis, the second rotational axis forming one of an acute angle and a perpendicular angle with respect to the cutting edge, and contacting the edge portion and the second cutting element and forming a second cutting surface along the edge portion so that the second cutting surface intersects the first cutting surface to form the cutting edge.

Abstract: An angle-measurement assist device suitable for a visual inspection to determine a blade angle of a dental scaler is provided with a holder having a flat face thereof adapted to be in contact with a bladed portion of the scaler, a permanent magnet mounted to the holder, and first, second and third pins projecting from the holder in the directions which are perpendicular to one another, whereby an operator is permitted to make a visual inspection to determine whether the scaler is sharpened to have a target blade angle on the basis of an extending direction of the first pin, with the assist device magnetically retained on the scaler.

Abstract: An apparatus for clamping a workpiece in a machine. The apparatus comprises an inner nose portion being rotatable about an axis of rotation and comprising a plurality of mounting surfaces, and, an outer ring portion rotatable about the axis of rotation and comprising at least one clamp operable between an unclamped position and a clamped position. In the unclamped position, the inner nose portion is rotationally positionable about the axis relative to the clamp such that a workpiece positioned against the mounting surfaces may be oriented relative to the clamp to a position at which with the clamp being operated to the clamped position, the workpiece is clamped against the mounting surfaces. The clamping results in a coupling of the inner nose portion and the outer ring portion whereby with a clamped workpiece, the inner nose portion and the outer ring portion are rotatable together and are positionable about the axis.

Abstract: A sharpening holder and a knife are uniquely configured for use with each other, the holder and the knife having permanent elements that mate when the holder is installed on the knife so that the holder is installed on the knife in exactly the same position on the knife every time that the knife is sharpened.

Abstract: A knife sharpener having a clamp system held by a frame in such a way that the knife to be sharpened may move in any direction freely but is otherwise held so that it does not rotate about any axis through the knife in order to maintain its orientation with respect to sharpening stones held by the frame. The knife can therefore be sharpened by moving it toward the user and down, first against one of two stones and then against the other, opposing stone, to sharpen both sides of the blade. The sharpener can be attached to a base or to the underside of cabinetry and may be used with various sharpening stones. In particular, a triangular, pivoting stone with rounded corners is preferred because it offers different facets and curves for use in sharpening flat-bladed and serrated knives and fully engages the knife blade through to the tip as the blade is drawn across its surface.

Abstract: A manually-operated sharpening apparatus includes a sharpening member for sharpening a sharpened member such as a dental instrument, a guide member for guiding the sharpened member so as to be movable therealong, and a positioning-assist element for permitting an operator to dispose the sharpened member at a location at which a predetermined angle is formed between the sharpened member and the sharpening member. With use of the sharpening apparatus, the operator can easily sharpen a blade of the sharpened member at a desired blade angle.

Abstract: A sharpening apparatus for sharpening blades of tools and other implements such as spatulas and grill scrapers. The sharpening apparatus includes a base member on which a sharpening stone is positioned. A slidable blade guide member is slidably connected to the base member. The slidable blade guide member includes a guide surface that is disposed at an angle relative to the upper surface of the sharpening stone, and a mounting mechanism for removably mounting a spatula against the guide surface such that the scraping edge of the spatula is in engagement with the sharpening stone. The slidable blade guide member is manually slidable back and forth to sharpen the scraping edge of the spatula. A fixed blade guide member is also attached to the base member.

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.

Abstract: A method of sharpening bedknives for reel type mowers by installing sets of locator surfaces in a bedknife grinder, grinding the surfaces with the grinder to be aligned and parallel, installing a bedknife located against surfaces in both sets, and electromagnetically locking the bedknife in position while grinding the edge to be sharpened. The bedknife is adjusted to be aligned with the reel blades by adjusting the bedknife pivots in the mower.

Abstract: A cutter sharpening accessory or cutter holder for use in conjunction with a drill press, radial arm saw or like woodworking apparatus to which a grinding tool, such as a diamond cup wheel, can be secured and rotated at high speed and having a work surface disposed thereunder on which the holder of the invention can be displaced relative to the grinding tool. The cutter sharpening accessory provided in accordance with the invention is adapted to rough and micro adjustment both radially and radial transversely to properly position a cutter to be sharpened relative to the horizontally disposed grinding face of the grinding tool. Continuous adjustment vertically is advantageous provided, furthermore, to ensure that the surface to be ground is properly located vertically relative to the grinding tool.

Abstract: A new and improved blade sharpening angle guide for aligning and holding a knife blade or the like at a proper angle to a sharpening stone for manual sharpening of the cutting edge, the blade sharpening angle guide comprising: an elongated curved block having a longitudinal slot therethrough wherein a knife blade or the like may be releasedly held with the blade cutting edge extending a distance outside the slot whereby controlling the angle of the blade to a sharpening stone when the blade and block combination are drawn across the sharpening stone.

Abstract: The blade sharpening device is an adjustable multi-angle edge sharpening unit comprised of a base connected to a rotatable sharpening stone table and a vertically adjustable blade support table. A hand movable sharpening stone is positioned on the sharpening stone table and the blade to be sharpened positioned on the blade support table, with the blade in grinding contact with the sharpening stone. An angle selection chart on the base allows vertical movement of the blade support table in conjunction with rotational adjustment of the sharpening stone table to accurately select a specific angle at which the blade edge is ground. A scissors adapter unit may be attached to the blade support table which permits the sharpening of scissors blades. The scissors blade is pressed against the scissors adapter, the blade being in grinding contact with the sharpening stone in much the same manner as knife blades are sharpened by the device.

Abstract: A blade sharpener includes a support rod, a blade clamping portion which is movable along the support rod, and a guide block which is located along the support rod, the guide block further having a honing tool rod extending through it which allows the honing tool rod to rotate freely about the support rod and substantially away from the horizontal to provide almost limitless motion and incrementally precise angular positioning of the honing tool rod relative to a blade secured within the blade clamping portion.

Abstract: A method of sharpening bedknives for reel type mowers by installing sets of locator surfaces in a bedknife grinder, grinding the surfaces with the grinder to be aligned and parallel, installing a bedknife located against surfaces in both sets, and electromagnetically locking the bedknife in position while grinding the edge to be sharpened. The bedknife is adjusted to be aligned with the reel blades by adjusting the bedknife pivots in the mower.