Abstract: A combination tape measurer, pencil sharpener and knife blade sharpener is provided. The pencil and knife blade sharpeners are provided on a separate insert that is fitted onto the tape measurer. This allows each component to be used without interfering with the others. A conventional retractable tape measurer can be modified to produce the resultant combination tool.

Abstract: A blade sharpener having a sharpening mechanism which functions to sharpen a blade engaging that mechanism and being moved longitudinally relative thereto. The sharpener also includes sharpening defeating means which, when operative, at least inhibits and possibly prevents sharpening of a blade by the sharpening mechanism when that blade is moved longitudinally through the sharpener in one direction. The defeating means is responsive to blade movement so as to adopt an operative condition when the blade is moved in the aforementioned one direction, and to adopt an inoperative condition when the blade is moved through the sharpener in the opposite direction. The defeating means includes a blade engaging member such as a roller, and in the operative condition that roller engages and presses against the cutting edge of the blade so as to impose a force on the blade which acts counter to the force causing the blade to engage the sharpening mechanism.

Abstract: A cutting element comprises at least one cutting member, a handle arranged for holding the cutting member, and a casing surrounding the cutting member so that in an operative position a cutting blade of the cutting member is exposed while in an inoperative position it is confined in the casing, the casing being movable relative to the cutting member so as to sharpen the blade of the cutting member.

Abstract: A cassette for holding, storing and, when desired, sharpening knives having an elongated body member having an opening at one end and defining a hollow space therein for receiving at least one knife blade which is inserted through the opening; tungsten carbide elements for sharpening an edge of the knife blade located within the hollow space; and post and wall members for guiding the knife blade into the hollow space of the body member comprising a pair of spaced elongated members attached to the body member for lateral guidance of the blade in a manner so as to align the blade edge at a predetermined orientation with respect to the sharpening elements so that, when desired, the edge may be sharpened thereby by engagement therewith, wherein the dimensions of the opening and hollow space are larger than the width of the blade such that the blade may be inserted into and removed from the body member without contacting the sharpening elements by the user exerting a force on the blade in a direction away from the

Abstract: A block for holding, storing and, if desired, sharpening knives is disclosed. The block includes a body member, at least one and, preferably, a plurality of elongated housing members disposed within the body member. Each housing member includes an open end and defines a cavity within the body member for receiving a knife blade through the open end. Sharpening means are rigidly and angularly disposed within the cavity at a position proximate the open end. The knife blade can be introduced into the elongated housing member in or out of engagement with the sharpening means. When introduced into the elongated housing member in engagement with the sharpening means, it engages the sharpening means at a predetermined angle of orientation, so that the edge of the blade becomes honed while encountering a minimal degree of resistance when being introduced into the elongated housing member.

Abstract: A retractable blade knife having a self-sharpening facility which can be selectively rendered inoperable. The sharpener is spring biased in an upward direction so as to be urged into engagement with the cutting edge of a knife blade, and manually operable release means is provided to permit the sharpener to be held in an inoperable position. An assembly of which the sharpener forms part also functions as stop means which positively prevents movement of the knife blade into its extended position. Such extension is possible only upon operation of the release means, but that is only necessary during initial outward movement of the knife blade. The sharpener is arranged to sharpen the cutting edge of the blade up to the tip of the blade. Positive locking means is provided to prevent inward movement of the blade when working under load in the extended position.

Abstract: An automatic sharpener for a chain saw in which a securing mechanism is released by a grip portion thereof, and a sleeve-like member is moved forward with respect to the main body by urging force of a spring so that the grindstone thereof can be automatically pushed forward from its retracted position upto the position at which the teeth of the saw chain are set, and a grindstone receiving body can be slightly moved forwardly or rearwardly with respect to the main body thereof by rotation of a screw.

Abstract: A scissors sharpener including a pair of elongate sharpening elements relatively arranged so as to define a vee shaped sharpening recess between them. Each sharpening element forms a respective one of two sides of the recess and each side has a longitudinal extent which is no less than the length of the scissor cutting edges to be sharpened. At least one of the sharpening elements is mounted so as to be movable laterally away from the other element, and resilient means bears against the movable element so as to resist the aforementioned movement. The sharpening elements overlie a base plate and an extension of that plate forms a platform against which the handle portion of scissors can rest during the sharpening operation. In use, scissors are located on the sharpener with the closed blades over the recess and the cutting edges extending generally in the longitudinal direction of the recess sides.

Abstract: A knife scabbard including a hollow housing which is adapted to receive the blade of a knife and which at least partially contains a pivoted carrier member having a blade sharpening device mounted thereon. A latch device is also pivotally connected to the housing and overlies part of the carrier member and in particular that part which carries the sharpening device so as to bear on the upper edge of a knife blade which engages the sharpening device. The pivotal axis of the carrier member is located adjacent a top wall of the housing and at an inner end of the carrier member which is divided so that a knife blade can pass therethrough and intersect the pivot axis. Mounting means for the pivoted inner end of the carrier member comprises a part of the housing and a portion of a spring which also serves to urge the carrier member about the pivot axis towards the housing top wall.

Abstract: A knife sheath contains a sharpening device which functions to sharpen a knife's blade at the introduction and extraction of the knife into and out of, respectively, the sheath. The device is incoporated in the form of a separate subassembly that is removably inserted into one end of a knife sheath.

Abstract: A blade-sharpening sheath contains sharpening elements (31) resiliently mounted in a crossed arrangement so as to define between them a blade-sharpening cavity which extends above a line (P) of intersection of the sharpening profiles (34). The rest position of the sharpening elements (31) is defined by abutment shoulders (42c) in cooperating relation with the sharpening profiles beneath the line (P). The abutment shoulders (42c) are carried by ribs (42) and the inner edge (42b) of each rib serves to guide the knife blade (48). The distance (h) between the tip (52) and the back (49) of the blade is slightly shorter than the distance (H) between the line (P) and the bottom of a groove (43) for guiding the back of the blade. The cutting edge (51) of the knife blade is inclined with respect to the back (49) of the blade.

Abstract: A handle particularly configured for use with a plurality of blade type tool elements. Each tool element is releasably fastenable in various positions and orientations in the handle by common fastening structures. The handle provides air compartments to cause floatation in water, a stone for tool sharpening, and a flint for fire starting.

Abstract: A blade sharpener having an access opening through which a blade is moved to be sharpened and including a sharpening device which engages with and sharpens the blade cutting edge and a reaction member which engages with and applies downward pressure to the blade back edge. The reaction member has an upper portion which is pivotally mounted adjacent an upper extremity of the access opening and at a location forward of the sharpening device. A lower portion of the reaction member is engageable with a knife blade. The sharpening device is mounted adjacent the lower extremity of the access opening. A spring urges the reaction member into a rest position at which the lower portion of that member is located forward of the sharpening device and rearward of the pivotal mounting of the reaction member.

Abstract: A knife sharpener comprises a scabbard 10 for receiving a knife blade 13. A sharpening device 11 is carried within the scabbard to engage a blade edge 14 within the scabbard 10 and can be moved manually along the scabbard to sharpen the blade edge 14. Thus, sharpening is accomplished while the blade is within the scabbard. A locking device 31 is provided to hold the blade within the scabbard 10. Part 46 of the scabbard 10 may be displaced to allow the sharpening device 11 to be removed for cleaning.

Abstract: This invention relates to a safety cutlery case with sharpening device in which resilient means and sharpening means are provided to secure the knives in place and to offer a sharpening when the knives are driven into or pulled out of the case.

Abstract: This disclosure is directed to a saw chain sharpener for a motor-driven chain saw having a guide bar assembly that includes a guide bar and a saw chain guidingly mounted thereon. The saw chain sharpener includes an elongated chain guard casing for removably receiving the guide bar assembly therein. The chain guard casing defines a cavity in the forward end thereof adjacent the nose of the guide bar. A sharpening device is mounted in the cavity for sharpening the saw chain whereby the device is contained within the casing.

Abstract: A self-sharpening cutting implement, especially scissors, includes two cutting elements which have respective gripping and cutting portions and which are pivotably connected to one another intermediate the gripping and cutting portions for movement relative to one another along a common plane. Each of the cutting portions has a cutting edge and an adjacent planar surface which is situated in the common plane. A layer of abrasive material is applied to one of the planar adjacent surfaces so that, as the cutting edge of the other of the cutting elements slides along this layer, it is sharpened. The layer may be applied by spraying, plating, vapor deposition, vacuum metallizing, sintering, or adhering the abrasive material to the respective planar adjacent surface.

Abstract: A flexible knife scabbard has a blade-receiving elongated passage open at one end extending longitudinally therein and has a blade sharpening slot open at both ends extending laterally therethrough and transversely through the elongated passage. Knife blade sharpening insert means including a pair of mating rigid plastic insert members or components are disposed in the elongated passage and each component includes an aperture in registry with the other and with the blade sharpening slot. The insert means further includes a pair of cylindrical ceramic blade sharpening elements or rods, one mounted on each insert component and overlying a portion of the associated aperture. The two rods are disposed in V-shaped arrangement relative to each other and located at (and overlapping) an end of the sharpening apertures in the insert member and the sheath slot. The knife blade slips into the scabbard between the insert members in normal use.

Abstract: A pocketknife provided with a cutting blade and a sharpening blade wherein the two blades are sheathed within the handle and are pivotally movable from sheathed to extended positions characterized in that the sharpening blade, when extended, can be removed to enable its use for sharpening of the knife blade, but, when sheathed, is captured within the handle.

Abstract: A plastic sheath for protecting the blades of a pair of scissors being stored or carried comprises two elongated plastic members permanently secured together along a mating seam as by sonic weld to provide a pair of spaced apart side walls and a pair of edge walls which cooperate to define an elongated blade-receiving passage open at one end and extending along the longitudinal axis of the sheath. A blade-sharpening slot extends inwardly from one edge of the sheath transversely to the sheath axis and includes outer and inner interconnected offset slot portions. An elongated abrasive blade sharpening element is stationarily mounted inside the blade passage of the sheath and extends generally longitudinally of the sheath and intersects the blade sharpening slot between offset adjacent ends of the blade sharpening slot portions.

Abstract: This invention relates to knife sharpeners, and particularly to knife sharpeners of a kind which are incorporated in a holder for the knife in which the knife is placed when not in use.In such holders the blade sharpener is located so that the action of positioning the knife in the holder, and/or the action of withdrawing the knife from the holder, moves the cutting edge relative to the sharpening device to effect a sharpening action.The knife sharpener of the present invention is provided with means which are incorporated in the holder for varying the effectiveness of the sharpening device even to the extent of rendering it inoperative.

Abstract: A sharpening device for a chain saw having an endless saw chain driven by a motor supported by a chain saw housing includes a housing adapted to be mounted to the chain saw housing spaced from the cutters. A grinding assembly having a grinding stone mounted thereon is movably mounted to the housing from a first position spaced from the cutters to a second position wherein the grinding stone is in contact with the cutters, and vice-versa. An actuator assembly is also movably mounted in the housing from a retracted position to an actuated position, and vice-versa. A coupling assembly is provided which moves the grinding assembly to the first position responsive to movement of the actuator assembly to the retracted position. A first spring is mounted between the actuator assembly and the grinding assembly and yieldably urges the actuator assembly toward the retracted position and the grinding assembly toward the second position.

Abstract: A belt-mountable scabbard for carrying a sportsman's knife comprises spaced apart walls defining an elongated recess for receiving and protecting the blade of a knife carried in the scabbard. A knife blade sharpener is permanently mounted on the scabbard and comprises a blade-receiving sharpening slot formed in the scabbard and a pair of angularly arranged abrasive elements permanently attached to a wall of the scabbard near the sharpening slot for making sliding engagement with the edge of a knife blade being moved in the slot to effect sharpening.

Abstract: There is disclosed a holder for a clasp knife in which the blade is held in a slot in a partly open condition but with the blade still spring-pressed to closed position so that the handle of the blade is held tightly in the holder and yet is accessible to the hand of the user and can be pulled outwardly and upwardly in one smooth motion to both release the knife from the holder and to open the blade. The holder has a slotted face conforming to the front of the knife and a roller spanning the slot in position to be engaged by the tip of the knife blade so that the spring-bias to closed position will pull the handle of the knife into juxtaposition with the slotted face. The holder has bottom and top projections adapted to hold the pivot end and free end of the knife against longitudinal movement. The bottom projection has a dish-shaped depression therein to hold the pivoted end against being withdrawn from the holder until after the free end has been withdrawn.

Abstract: The top sharpening saw chain includes a cutter link having a body portion, an integral cutting element and a depth gauge. The cutting element comprises a top plate having a bottom surface, a top surface face spaced therefrom and terminating rearward thereof and a leading connecting surface extending between the top surface and the bottom surface. The juncture of the connecting surface and the bottom surface defines the only cutting edge of the cutting element.

Abstract: An apparatus for sharpening scissors and similar two bladed cutting implements in which both blades are sharpened simultaneously with the scissors kept in the closed condition. The apparatus includes a hollow housing containing a pair of blade sharpeners, at least one of which is mounted for movement towards and away from the other and is spring influenced towards the other. The or each movable sharpener is carried at a front end of a elongate member which extends rearwardly into the housing and is movable about an axis located at or adjacent its rear end. Sharpening is effected by passing the closed scissors between the two sharpeners so that the cutting edge of each blade is treated by a respective one of the sharpeners and each sharpener serves to remove material simultaneously from the cutting edge of one blade and the back edge of the other blade.

Abstract: A thread-cutting assembly for use with a sewing machine that always presents a sharp cutting edge for thread cutting. The assembly includes a circular cutting disk having a circumferential cutting edge, and a guard plate for preventing access to the majority of the circumferential cutting edge of the disk but exposing a portion of the disk circumferential cutting edge. The disk is mounted to the guard plate so that the disk rotates with respect to the guard means about an axis when thread to be cut by the disk is brought into engagement with the exposed portion of the disk so that a new cutting surface is exposed, and the guard plate is operatively mounted to a sewing machine. The guard plate also sharpens the cutting edge of the disk upon rotation of the disk with respect to the guard plate, the guard plate being formed of metal having a greater temper than the metal of the disk.

Abstract: A knife sharpener including a scabbard for receiving and protecting a knife blade, and a sharpening device mounted on the scabbard for engagement by the blade cutting edge during movement into and out of the scabbard. The sharpening device is supported by a carrier member which is pivotally mounted within the scabbard so that the sharpening device can be moved towards and away from a top wall of the scabbard. A pivoted reaction member is located between the scabbard top wall and the carrier member, and has front and rear reaction zones which are engageable with a knife blade and/or the adjacent surface of the carrier member, at opposite sides respectively of the carrier member pivot. The reaction member pivot is located rearward of both reaction zones and is parallel to the carrier member pivot. A U-shaped biasing spring engages both the carrier member and the reaction member to resist separation of their front end portions.

Abstract: An abrasive or other filament-working member is mounted at the sweep circle of a vegetation trimmer filament for progressively sharpening the end of the filament and removing excess filament during operation of the vegetation filament-trimmer; the filament working member may include means causing the filament to heat.

Abstract: A sharpener apparatus for an electric shaver of the type having cooperable cutting elements including a cutting head equipped with one or more motor driven cutting blades. The sharpener is positioned between the shear plate and blade and includes a thin sheet having an abrasive material thereon suitable for sharpening the blade or for engagement with and honing the inner surface of the shear plate. In one embodiment, the thin sheet is of size and shape that it is held by the ends of the shaver housing when sharpening the blade. In another embodiment, means are included on the thin sheet for holding the thin sheet on and for movement with the cutting blade to recondition or hone the head. In either embodiment, operation of the shaver's blade drive motor will drive the cutter blade while it either engages the abrasive surface as in the first embodiment or in the second embodiment moves the abrasive surface over the head.

Abstract: A cutting saw chain having cutting tooth links distributed therealong. Each cutting tooth link having a portion at one end upstanding therefrom and twisted out of the plane of the link to form a cutting edge. The links on opposite sides of the chain have the upstanding portions twisted in opposite directions. Each cutting tooth link at the other end has a portion upstanding in the plane of the link and forming depth limiting means. A link in advance of each cutting tooth link also has an upstanding part forming a depth limiter for the following cutting tooth link.