Abstract: Apparatus and method for sharpening a tool. In accordance with some embodiments, a selected side surface of the tool is placed in contacting engagement against an upper reverse sharpening guide surface that faces an abrasive surface extending along a first plane. The upper reverse sharpening guide surface is aligned along a second plane that intersects the first plane at an acute angle. A tool cutting edge contactingly engages a non-abrasive support surface disposed between the upper reverse sharpening guide surface and the abrasive surface to establish a plunge depth of the tool prior to contact with the abrasive surface. The tool is thereafter moved away from the upper reverse sharpening guide in a lateral direction across the abrasive surface while nominally maintaining the tool at the acute angle to sharpen the cutting edge in a trailing cutting edge orientation.

Abstract: A portion of the sharpener handle is recessed to receive the curved blade of a lopper. The cutaway allows the sharpening element to sharpen the lopper blade along its entire length. Additional sharpening elements can be positioned along the handle to provide a multipurpose sharpening tool.

Abstract: In one aspect, the invention is directed to a sharpener for sharpening a corner edge of a snow travel member, which may be, for example, a ski or a snowboard. The corner edge is between a bottom face and a side face of the snow travel member. The sharpener includes an angle adjustment mechanism to adjust the angle between surfaces on the sharpener that support the bottom face and side face of the snow travel member, in order to accommodate different snow travel members, that may have different angles between their bottom face and their side face. For example, the angle adjustment member may be capable of adjusting the angle between a bottom face orienting surface on the sharpener and a side face orienting surface on the sharpener between a range of angles. The range of angles may be, for example, a range from 85 degrees and 90 degrees.

Abstract: Apparatus and associated method for sharpening a cutting edge of a tool. In accordance with some embodiments, a side of the tool is placed in contacting engagement against a reverse sharpening guide surface to orient the tool at an acute angle with respect to an abrasive surface, with the abrasive surface extending in a lateral direction from a first end to a second end and the reverse sharpening guide surface located proximate the first end. The tool is moved away from the reverse sharpening guide surface and along the abrasive surface in the lateral direction toward the second end while nominally maintaining the tool at the acute angle so that a cutting edge of the tool is sharpened against the abrasive surface in a trailing cutting edge orientation with a top surface of the tool opposite the cutting edge maintained closer to the second end than the cutting edge.

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 wiskar for sharpening cutting teeth of a chain provided on a chain bar of a chain saw. A housing is removably attached to the chain bar and includes a recess to receive the wiskar therein. The wiskar includes a first member configured to be operationally engaged by the recess of the housing; and a second member configured to frictionally engage a bottom surface of the cutting teeth. The second member includes a body portion intermediate the opposing ends, wherein opposing ends of the second member each have at least one lobe defined therein. Abrasives are uniformly impregnated throughout the first and second member to sharpen the bottom surface of the cutting teeth. At least the second member is manufactured from a pliable material that erodes due to friction caused by the cutting teeth engaging the lobes of the second member.

Abstract: An abrasive sharpener having a body and an integral handle. The body possesses a pair of upper slots for receiving an edge to be sharpened. One of slot has a pair of crossed diamond abrasive rods having a square cross section generally along its length. The other slot includes a pair of abutting ceramic blades having triangular configuration. Two offset slot portions having a ceramic rod is also provided on the body.

Abstract: The invention relates to a device (1) for sharpening the blade of a manual cutting tool, in particular a knife. The inventive device comprises a support (2) provided with a cutout (4). Identical sharpening levers are arranged on each side of the cutout in front and in staggering manner with respect to each other and provided with a curved arm (13) having a rectilinear end edge (14) and another arm (16) forming means for returning in a position by gravity. Each lever (11) is pivotally mounted in the jointing area (15) of the arms (13, 16) around an geometrical axis which is generally perpendicular to a longitudinal direction (A-A?) of the cutout and a slot (5). Said device is particularly adapter to the agriculture and food industry.

Abstract: Various forms of knife guides are provided for knife sharpeners to minimize damage to the knife blade. One of the forms of knife guides comprises non-contact optical arrangements which includes a light source, at least one light detector and an indicator that monitors and displays the intensity of light reflected from the blade surface.

Abstract: A knife sharpener has a housing, a base, a sharpening device and an adjustable device. The housing has a case, a cavity and a slot. The cavity is defined in the case and the slot is defined in the case and communicates with the cavity. The base is mounted on the housing and has a base board and two side walls formed on the base board. The sharpening device is movable mounted on the base and is received inside the housing. The sharpening device has two sharpening arms with sharpening rods. The adjustable device is mounted on the sharpening device mounted between the two sharpening arms. When the knife sharpener is used, the adjustable device is rotated to change the cross-position of the sharpening device. Therefore, a knife may be sharpened at a different site on the sharpening rods for prolonging the life span of the knife sharpener.

Abstract: A blade sharpener (10) comprises sharpening strip providing carriers (12) and (14) each including an obliquely extending linear sharpening strip providing rod (16) and carrier movement non-interference guiding means in the form of a slot defining formation formed by facing rail pairs (18), (20) facing one another across a slot (22). The rail pairs (18) and (20) form part of a carrier support frame (24) to which the carriers (12), (14) are mounted to be displaced in diametrically opposed directions and along the spacings formed between the rails of the rail pairs (18), (20). A crossover point (28) is defined between the rods (16) within which the cutting edge of the blade of a knife is in an abrasion fashion moved during a sharpening action. The crossover point (28) is constrained to move along a linear sharpening path extending along the slot (22) during sharpener use.

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 sharpening guide for a dental tool is provided, with the dental tool having a handle, a working portion, and a shank extending between the handle and the working portion.

Abstract: A device for sharpening the blades of sharp tools includes a plate fitted with an opening letting through the tool blade, opposite which opening are provided two sharpening structures in the form of oblong spindles which cross one another. Both these sharpening spindles are hinged at one of their ends on the plate, each on one side of the opening, and they include an elastic recall device for forming a sharpening V mobile under the pressure of the blade to be sharpened. Each sharpening spindle has a U-shaped rod with two parallel or substantially parallel arms which are connected at the bottom of the U and both fee ends of the U include square junctions forming hinging axes which are recessed, free to rotate, in offset engagement orifices provided on an appropriate support interlocked with the plate, in order to obtain elastic recall of the sharpening spindles by a twisting effect.

Abstract: A manual knife sharpener is provided with angle control structure. The structure includes a guide member having a guide surface which forms an angle with the abrasive surface of the sharpening member. When the blade is inserted into the space between the abrasive surface and the guide surface the blade presses against the guide surface to displace the guide surface linearly in a direction perpendicular to the guide surface so that the movement is a lateral movement in the same plane without any pivoting or twisting of the guide member. Thus, the angle between the guide surface and the abrasive surface remains constant regardless of the extent of displacement of the guide member.

Abstract: Apparatus for the sharpening and/or bevelling of either a ski or snowboard side edge or base edge includes a guide for clamping a file therein and adapted to be held by a hand of a person using the guide and moved lengthwise along an edge portion of a ski or snowboard while in contact with a surface thereof. A variable angle adjustment mechanism establishes an almost unlimited number of selected angular orientations of the guide and the file in a plane transverse to the lengthwise direction when positioned at the side or base edge portion of the ski or snowboard while in contact with the surface thereof. The variable angle adjustment mechanism is integrated with a file clamping mechanism in the guide.

Abstract: A fixture for positioning an abrasive tool above a running surface of a snowboard for beveling a snowboard edge including a head having one or more feet, each foot including an indexing portion for indexing the fixture against a marginal side of the snowboard. An arm is connected to and projects from the head and a carrier is connected to the arm at a predetermined distance from the indexing portion of the foot. The carrier includes a tool shim. When the fixture is in use, the tool shim bottom face may be held in sliding contact with in a plane substantially parallel to the running surface of the snowboard at a predetermined and fixed distance from the marginal side of the snowboard. A finishing tool, such as a file, is held at a predetermined working angle relative to the running surface of the snowboard by spanning the file between the upper face of the tool shim and the edge of the snowboard. The working angle of the bevel may be varied by advancing the arm through the carrier.

Abstract: A sharpening guide assembly for use in sharpening ski and snowboard edges includes an angle member and at least one riser member. The angle member includes at least a first outer surface and a second outer surface, an inner edge of the first outer surface adjoining an upper edge of the second outer surface. The riser member is positioned on the first outer surface of the angle member such that a top portion of the riser member extends above the first surface of the angle member. The angle member is formed of a first material and the riser member is formed of a second material, wherein the second material has a hardness which is greater than a hardness of the first material. During a sharpening operation, a sharpening tool is supported on the riser member such that the sharpening tool such as a file member is positioned above the first outer surface of the angle member so as to avoid potential wear causing contact therewith.

Abstract: An apparatus for the sharpening and/or bevelling of either a ski or a snowboard side edge or base edge (12). The apparatus comprises a guide (10) adapted to be held by the hand and moved lengthwise along an edge portion of a ski or snowboard while in contact with a surface thereof. The guide includes element for securing a file or the like (16) thereto at any one of a plurality of desired angular positions relative to the lengthwise direction of movement of the guide during use.

Abstract: A device for manually sharpening cutting tools, especially hand-held cutting tools, comprising a shaft-shaped supporting body, being at least at one end provided with an edge indentation associated with a sharpening tool made of hard metal a and a central tongue projecting into the edge indentation for forming lateral entering grooves terminating at the sharpening tool for a tool to be sharpened. A long tool life of the sharpening tool made of hard metal may be achieved in that the sharpening tool is formed as a circular sharpening plate being rotatable round its axis and being arranged in the area of the inner end of the associated edge indentation with an axis vertically to the edge indentation and the tongue projecting over the plate. The sharpening plate is arranged displaceably in the longitudinal direction of the edge indentation.

Abstract: A saw chain sharpener for a chain saw and a chain saw having a sharpener in which the bottom surfaces of the cutting teeth of a conventional bottom sharpened saw chain are conveniently sharpened automatically by running the chain under power through the sharpener. The saw chain can be sharpened using the sharpener in a matter of typically twenty to thirty seconds without removing the chain from the chain bar. The sharpener is preferably adapted to be removably mounted to a bracket which is itself preferably removably disposed on the chain saw. The sharpener comprises a sharpening tooth disposed in a housing which is mounted on the chain bar. A top surface of the sharpening tooth frictionally engages bottom surfaces of the cutting teeth of the chain as the chain is run under power. A device for dispensing a sharpening compound to the sharpening tooth during sharpening may be disposed on the sharpener housing.

Abstract: A device for removing burrs created on the lateral edges of ice skate blades during sharpening is provided. The device consists includes cutting insert of extremely hard alloy having at least one angled cutting surface. The cutting insert is secured in a recess located along one of the edges of a substantially flat rigid housing member such that the portion of the cutting insert having the cutting surface extends out from the housing member. The housing member is connected to a substantially flat rigid base member such that a channel is defined by a portion of the base member, the end of the housing member having the recess, and the portion of the cutting insert which extends out from the housing member. The housing member and base member are connected such that they may pivot slightly relative to each other, but remain substantially parallel.

Abstract: A rasp is formed for removing material at a cut edge of a structure, such as drywall cut to size. Unlike prior drywall rasps, the rasp of the invention is formed with a rigid, channel-shaped grip defining a generally U-shaped, downwardly facing, concave inner channel surface. A rectangular section of expanded metal that forms a grid with a multiplicity of grid openings delineated from each other by a lattice of intervening metal strips is placed into the channel-shaped backing or grip. Lips at the lower extremities of the channel walls are bent upwardly and inwardly to clamp the sheet of expanded metal against the inner surface of the grip. The sheet of expanded metal is thereby permanently secured against the inner surface of the grip. The sheet of expanded metal is bent to conform to the interior surface of the grip. The channel-shaped structure of the rasp is then run along the cut surface of a structure to be finished so as to abrade away material therefrom.

Abstract: A small hand-held device for shaping and sharpening of the ice-contact surfaces of skate blades and blade-type runners of bobsleds and iceboats. The sharpener has two means for guiding blades in its sharpening section: a) a fixed, non-adjustable slot in the body, or b) adjustable guide bars in a sheet-metal or a solid-material body model. The sharpener can also include a centering device for exact centering of the radiused abrader with the center of the skate blade regardless of the sharpening wear of the abrader.

Abstract: A rasp tool for smoothing the rough edges of cut drywall and the like including an elongated housing which is substantially U-shaped in cross-section and which defines a pair of legs disposed spaced relative to one another with each leg defining a distal end. A pair of slots extend along the inside surface of each of the legs longitudinally relative to the housing and parallel relative to each other. The housing further supports a rasp blade with the edges of the blade removably received in the pair of slots such that the blade is spaced from the distal ends of the legs so as to define slide guides on the inside surface of each of the legs.

Abstract: A sharpening guide consisting of a cutting tool supporting spacer and a filing or polishing area locater during the sharpening of the horizontal metal edge surface of alpine skis and snowboards. The right angle spacer is provided with a horizontal base and a vertical side wall. The bottom surface of the horizontal base rests on the ski or snowboard base and the inclined top surface locally supports the cutting tool. The filing or polishing area locater rests on the top surface of the cutting tool and is demountably secured to the vertical member of the spacer. The locater has an elongated tab extending generally from the spacer longitudinally along the cutting tool towards the edge being sharpened. The elongated tab having a member for indicating the location along the cutting tool for contacting the horizontal surface of the metal edge of the ski or snowboard during the sharpening and dressing process.

Abstract: A blade-sharpening apparatus for knives and other cutting tools which uses a ceramic sharpening element. The sharpening element is a recycled aluminum oxide sodium vapor streetlight bulb. The vapor and heat expansion and contraction of the bulb during use as a light causes wear on the bulb and results in the ceramic element becoming more porous, thereby providing an abrasive surface suitable for blade sharpening. A first embodiment of the apparatus comprises a housing with a support substantially along a length of the sharpening element and a cover for enclosing the sharpening element when not in use. In the first embodiment, the sharpening element is supported on both ends. In a second embodiment, the sharpening element is supported on one end by a handle and a sleeve is provided to enclose the sharpening element when not in use. The sleeve may be attached to a portion of the handle opposite the sharpening element when in an operating position.

Abstract: A hand-held sharpener tool for a knife or similar implement comprises a unitary body having first and second sections; sharpening elements mounted in the first section; the second section being located rearwardly of the sharpening elements and comprising an elongated handle on an upper side of the body, and an elongated hand guard extending rearwardly of the sharpening elements, the hand and the hand guard forming an elongated ring rearward of the sharpening elements with sufficient space for a user's fingers to extend between the handle and the hand guard. The sharpening elements can be provided to sharpen/deburr either a two-sided blade such as a knife blade or a one-sided blade such as a scissors blade.

Abstract: Apparatus for providing a sharpened edge on an elongated cutting tool comprising a base member having an elongated slot therein and a pair of elongated sharpening elements each pivotally mounted on the base member at opposite sides of the upper end portion of the slot and extending in crossed relation and intersecting at the slot as a cutting tool is drawn downwardly and outwardly through the slot. Separate counterweights are connected to the upper end portions of each of the sharpening elements to resist their downward pivoting movement as the cutting tool is so drawn through the slot. Separate eccentrically mounted cams are disposed between each cutting tool and its axis of pivot to adjustably control the extent of swinging movement of each of the sharpening elements in both directions.

Abstract: A fixture for positioning a file or other abrasive finishing tool relative to the running surface of the ski so that the bottom face of the ski edge may be beveled. The fixture is configured to allow either or both the angle and the width of the bottom face of the edge that is finished to be varied.

Abstract: A woodturning scraper burnisher and method of burnishing woodturning scrapers. The burnisher is a cast aluminum carrier having a substantially flat face penetrated by three unequally spaced holes into which a conical fulcrum pin and burnishing rod having a protruding truncated conical surface are slip fit. With the carrier fixed in place on a work surface, the underside of a turning scraper is pressed against the face of the carrier while a side of the scraper is positioned against the fulcrum pin and the scraper bevel is forced against and slid relative to the conical surface of the burnishing rod to form a "hook" on the working edge or arris of the scraper.

Abstract: A handheld tool used for conditioning and sharpening the blade of a scraping tool or like tool. The present invention tool includes a tool body that supports a file, a sharpening stone, a conditioning pin and a burnishing element. A plurality of slots are disposed within the tool, wherein each of the slots intersect the burnishing element at a different angle between 90.degree. and 75.degree.. The tool provides guiding surfaces that enable a blade to be properly worked against the file, the sharpening stone, and the conditioning pin. The step of burnishing the blade is accomplished by passing the blade through one of the slots formed in the tool. As a result, the labor and time needed to sharpen a blade is greatly reduced and the quality of the blade point is made more consistent.

Abstract: A refurbishing tool for renewing edges on a skate blade, including a pair of rigid, generally rectangular supporting members pivotably connected to each other. Each member has a flat abrasive surface on one side thereof and extending in the lengthwise direction of the supporting member. The abrasive surfaces are able to face each other during use of the tool. Preferably an integral plastic hinge pivotably connects the two members which can be arranged on opposite sides of a skate blade with the abrasive surfaces parallel to each other and engaging the sides of the blade. The tool is moved back and forth in a lengthwise direction to renew or recreate the edges.

Abstract: Apparatus for manually sharpening dental instruments which require honing at a specific angle, comprising a planar base member having flat parallel sides and an elongated slot, a planar honing stone having flat parallel honing surfaces disposed within the slot of the base member perpendicularly to the plane of the base member and a spring clip positioned between one end of the slot and the honing stone for providing a biasing force to maintain the honing stone in pressure contact with the other end of the base member slot.

Abstract: Embodiments of a ski sharpening guide are shown and described, each embodiment including an angular member having a side surface for placement against a ski and a top surface for holding a file. Preferably, a channel runs along the junction between the side surface and the top surface along the entire length of the angular member, for collection of filings. Preferably, the top surface includes a filing-receiving recess having platforms that rise from the recess to have platform top surfaces that are co-planar with the angular member top surface. The platforms provide additional support for the file with minimal reduction of recess volume and efficiency of filings removal. The ski sharpening guide preferably includes a clamp for securing the file in position relative to the guide and the ski edge.

Abstract: Embodiments of a ski sharpening guide are shown and described, each embodiment including an angular member having a side surface for placement against a ski and a top surface for holding a file. At the junction between the side surface and the top surface is a channel that preferably runs the entire length of the angular member for collection of filings. Preferably, the top surface includes a filing-receiving recess having angled walls to create a wide inlet at the channel and a narrower outlet at the top surface rear edge. The combination of long channel and angled, wide-mouthed recess form an efficient filing-removal system which prevents filings from interfering with the sharpening of the ski edge. The ski sharpening guide preferably includes a clamp for securing the file in position relative to the guide and the ski edge. The clamp is designed with a base side wall against which the file may be pushed to aid in positioning and securing the file and preventing the file from being pushed off of the guide.

Abstract: A combination cabinet scraper blade edge preparation tool for: (1) filing a scraper blade edge square to its face or, alternatively, at a predetermined angle to the blade face and (2) for burnishing the scraper blade edge at a predetermined burnishing angle relative to the face of the blade. The tool may be easily fabricated because it can be made with a uniform cross-sectional shape and with minimal machining by extruding it from aluminum, among other materials, and using thumb or set screws threaded into the extrusion to fix the file and burnishing rod in position.

Abstract: A knife sharpening device includes a vertically-oriented base having a vertically-oriented slot. Mounted on the base, on one side of the slot are two crossed sharpening members of a rod-like configuration. A lower end of each of the crossed sharpening members is anchored in a horizontally-extending pivot pin with a terminal end of each of the sharpening members extending beyond the pivot pins and engaging a horizontally-extending stop pin. The pivot pins are rotatably mounted in the base and extend through the base. A pivot wheel is mounted concentrically on a free end of the pivot pins on an opposite side of the base from the sharpening members. Two radially-extending set screws extend through the pivot wheels and engage a flat surface of the pivot pin to hold the pivot wheels on the pivot pins. Extending between the two set screws, threadingly mounted in the two pivot wheels, is a tensioning spring.

Abstract: A hand held skate blade sharpening tool has a rotatable sharpening stone retained within a channel-shaped body member. Removable pins mounted on the body are located adjacent the outer ends of the stone to limit longitudinal movement of the stone within a channel of the body member. The body member has an access slot extending radially from the stone. Elongated guides projecting upwardly adjacent the slot are transversely spaced at a distance substantially the same as the width of the skate blade to guide and limit lateral movement of the blade within the slot. A transverse groove interrupting the slot and guides is open to the channel exposing the stone. This enables the stone to be manually rotated within the channel to rotate an unused sharpening surface into alignment with the slot.

Abstract: This invention is a blade guide to allow the angle that the blade addresses a sharpening rod to be repeatedly and accurately re-established. This is accomplished through the provision of a guide plate outwardly projecting from the sharpening rod with a guide arm thereon. When the blade is placed with the back of the blade at the juncture between the guide plate and the guide arm, and the cutting edge of the blade against the sharpening rod the angle the blade addresses the sharpener can repeatedly be re-established before each sharpening stroke of such blade against the sharpener. Once this correct angle is established, it can be maintained even through the blade is no longer engaged with the guide. By making the guide arms adjustable longitudinally along the guide plate, the optimum angle can be set for an infinite number of different sizes of blades. Also indicia is provided on the guide plate so that the proper location of the guide arm can be readily determined by reference to such indicia.

Abstract: A hand held sharpening and deburring tool is disclosed which is capable of sharpening a variety of bladed implements such as knives, hatchets, scissors, cleavers, garden trowels and etc. The tool comprises a body having a handle grip section, a sharpening/deburring section and a transition section that melds the grip and sharpening/deburring sections together and also mounts a guard for protecting the operator's hand from injury. The sharpening/deburring section including a first transversely mounted sharpening/deburring insert extending to one side of the body for sharpening or deburring a scissors blade or like device, said sharpening/deburring section also including second and third sharpening/deburring inserts defining a V-shaped notch which extends toward the tip of the body for sharpening or deburring the cutting edge of a knife or like device.

Abstract: A blade sharpener which has two elements, one of which is a hand-held member, and the other of which is a follower member is disclosed. The two members are pivotally secured each to the other, and secured at variable preselected pivot points so that adjustments can be made for the particular skate, and for the particular cross-section of the blade desired at various points along the power toe section, neutral under foot section, and turning heel section. Means are provided interiorly of the two members to optionally secure a file or a neutral member such as a wooden dowel to the end that varying portions of the blade can be sharpened while moving the hand-held member back and forth longitudinal of the blade. Guide means are supplied on both members for securing the relationship of the file or abrading member to the blade in a preselected centralized orientation.

Abstract: A blade sharpener which has two elements, one of which is a hand-held member, and the other of which is a follower member secured in the hand-held member is disclosed. The two members are pivotally secured each to the other, and secured at variable pre-selected pivot points so that adjustments can be made for the particular skate, and for the particular cross-section of the blade desired at various points along the power toe section, neutral underfoot section, or turning heel section. Means are provided interiorly of the single hand-held member to optionally secure a file of the varying cross-section. Guide means are supplied on the hand-held member to secure the relationship of the abrading member to the intended blade in a pre-selected centralized orientation. The guide means can be varied in their special relationship to accommodate varying thicknesses of blades.

Abstract: A multipurpose tool for maintaining hunting arrows is disclosed. The tool is a sharpener capable of sharpening broadheads, a wrench capable of tightening or loosening broadheads screwed onto an arrow, and a dresser capable of dressing the fletched end of an arrow so that the arrow effectively will receive a nock. The tool has an elongated body with integral longitudinal ridges to enhance its appearance and to facilitate gripping, and is preferably molded of ABS plastic in two pieces. The sharpener and wrench are at the bottom, and the dresser is at the top of the tool. The sharpener comprises a shallow channel running diagonally across the face of the bottom, normal to the axis of the tool, with a plurality of small hard rods imbedded in the sides of the groove. Sharpening is effected by movement of the edge of a broadhead along the shallow groove.

Abstract: A reciprocating hook sharpening device (10) for sharpening fish hooks (100); wherein, the device (10) has a sharpening member (30) having different coarseness surfaces (33) (34) (36) which reciprocates within a housing member (20) having different width apertures (25) to accept fish hooks (100) having different diameters.

Abstract: A handy knife sharpener comprising two symmetric side frames connected together to hold two crossed abrasive rods therein for sharpening cutting tools, wherein the peripheral edge thereof comprises a hand-hold portion at one end for comfortable and positive grip, a bevel slot at the top for supporting and guiding the knife to be sharpened, a sloping surface portion at an opposite end at right angle relative to said bevel slot for stopping against the ground of a work table. The position of each abrasive rod can be changed once it is worn at a fixed area on the peripheral grinding surface thereof.

Abstract: A device particularly suited for sharpening broadhead arrows and having sharpening surfaces which are curved in the direction the broadhead travels as it is sharpened. In a preferred embodiment, the sharpener comprises two sharpening surfaces to sharpen broadhead arrows and a third cylindrical sharpening surface which can be used to sharpen other discrete cutting elements. Each broadhead sharpening surface is formed as two sections which are curved about an axis perpendicular to the direction of travel of the arrow blades so that only one line of contact is formed between a blade and its respective sharpening section, resulting in even sharpening along all the points on a blade.

Abstract: According to the present invention there is provided an apparatus for sharpening an elongate edge, especially the blade edge of a ski. The apparatus comprises an abrasive disc set in a housing, a motor unit for rotating the disc about its axis, a guide surface parallel to the plane of the disc, guide means defining a guide plane substantially at right angles to the guide surface, and means to bias the disc axially to a position just proud of the guide surface.

Abstract: A blade sharpener which has two elements, one of which is a hand-held member, and the other of which is a follower member is disclosed. The two members are pivotally secured each to the other, and secured at variable preselected pivot points so that adjustments can be made for the particular skate, and for the particular cross-section of the blade desired at various points along the power toe section, neutral under foot section, and turning heel section. Means are provided interiorly of the two members to optionally secure a file or a neutral member such as a wooden dowel to the end that varying portions of the blade can be sharpened while moving the hand-held member back and forth longitudinal of the blade. Guide means are supplied on both members for securing the relationship of the file or abrading member to the blade in a preselected centralized orientation.

Abstract: A cabinet scraper burnishing tool enabling simple foremation of a cabinet scraper "hook." The tool generally comprises a tool body having a slot through which the cabinet scraper is passed in order to accomplish hook formation and a burnishing rod fixed in a knob and rotatably positioned partially within the slot so that rotation of the knob makes it possible to position the burnishing rod to contact the cabinet scraper edge at different selected angles.