Abstract: The cutter of my invention is a unitary device that does not require a utility knife, only a blade. The cutter exposes twice the blade length of a conventional utility knife, i.e., approximately 2.2 inches. The blade can be extended into the insulation over 4 inches. The cutter has a blade guard (to keep fingers out of the way, etc.). The cutter also has a safety mechanism to guard against accidental exposure of the blade (you have to grip the tool by the handle to allow the blade to be exposed). The cutter also has an added leverage point directly in front of the grip to increase the amount of pressure you can exert on the insulation. This cutter compresses and cut in one continuous motion, i.e. the same motion does both compressing and cutting.

Abstract: A protection cover for a trimmer is disclosed. The protection cover includes a protection portion that is comprised of plural elastic members. The protection portion prevent chips such as grasses trimmed or small stones inside of the cover. Each of the elastic members is shaped to a strip in an embodiment. The protection cover also includes a member of adjusting a vertical position of the protection portion.

Abstract: A fixed blade utility knife has a housing provided by a lower handle portion, an upper lever portion, and a nosepiece at one end thereof which seats one end of the handle and lever. The lever is pivotably supported on the nosepiece, and a blade holder in the nosepiece is pivotably supported on the handle. The blade is seated in the holder and extends outwardly of the nosepiece, and a blade guard of generally U-shaped cross section extends about the cutting edge and is slidable in the nosepiece to extend outwardly to sheathe the cutting edge and to be withdrawn into the nosepiece to expose the cutting edge. A manipulatable element slidably seated in the nosepiece is engaged with the blade guard to effect its sliding movement. Pivoting of the lever into an open position releases the blade from engagement in the holder so that it may be easily replaced.

Abstract: A scalpel blade sheath which encloses and retains a scalpel blade therein. A scalpel handle is selectively inserted into the sheath whereby the scalpel blade is securely attached to the scalpel handle in preparation for cutting operations. The sheath is selectively slipped onto the scalpel handle to expose the blade for the cutting operation. The sheath is repositioned over the scalpel blade to protect the blade (and the user thereof) when the cutting operation is concluded. When the blade is to be removed from the scalpel handle after the cutting operation, the scalpel blade is retained within the sheath for safe and sanitary disposal of the blade and the sheath.

Abstract: A carton cuing device includes housing and a guard member extending about the exterior of and pivotally attached to the housing. The housing includes a handle portion, neck portion, and hook portion which together define a cutting area therebetween and a channel therein for receiving and supporting a blade partially disposed in the cutting area. A frictionally slidable stop member is displaceable within the channel of the handle portion for abutting engagement with a blade received in the channel for supporting the blade from sliding within the channel. A spring is disposed between the guard member and the housing and urges the guard member into a first position in abutment with the hook portion for closing the cutting area to cutting. The guard member is displaceable by a carton to be cut to a second position in abutment with the handle portion for opening of the cutting area to cutting, and to all positions between the first and second positions for at least partial opening of the cutting area to cutting.

Abstract: An insulation cutting guide apparatus 10 for use with a cutting implement 101 to sever an unrolled sheet of insulation material 100. The cutting guide apparatus 10 includes an open framework member 20 having an elongated aperture 21 and provided with a knee pad member 30, a hand grip member 40, and an alignment member 50. The framework aperture 21 is dimensioned to receive, and at least one side of the aperture 21 is designed to guide, the cutting implement 101 during the severing of the insulation material 100.

Abstract: A hand tool for slabbing a roll of paper, comprising an elongated carriage frame having handle means affixed thereto. The hand tool also has casters mounted on each side of the carriage frame for movably supporting the frame along an upper segment of that roll. There is also provided a blade carrier attached to the elongated frame and a cutting blade mounted in that blade carrier. During use, the cutting blade extends beneath the elongated frame, with a cutting edge thereof facing towards a forward end of the frame. The elongated frame may also comprise a pivotally lockable blade guard enclosing the cutting blade when the hand tool is lifted off a work surface, for further enhancing a safe handling of the tool.

Abstract: The present invention is directed to a bottle top cutting device which includes a base and a housing. The housing has an aperture formed therein, the aperture configured to allow the passage of a bottle tip thereinto while precluding insertion of a finger. A razor is housed in the housing and is positioned such that as the bottle tip is slid in the aperture towards the razor, the tip is cut off of the bottle.

Abstract: The invention provides a method for opening a slaughtered animal comprising the following steps of:(1) providing a slaughtered animal;(2) suspending the animal from the hind legs;(3) arranging a cut in the belly wall close to the hind legs substantially in the plane of symmetry of the animal;(4) continuing this cut in substantially vertical downward direction; and(5) holding the intestines clear of the belly wall during step (4).

Abstract: A utility knife can be equipped with a removable blade protective guard structure to prevent the person from being cut when the knife is not in use. The guard structure includes a mounting element having a pivotable connection with an elongated guard element near the leading end of the knife handle. A torsion spring is coiled around the pivot shaft to normally urge the guard element to a position extending along the cutting edge of the blade. However, the guard element can be swung through an arc of about one hundred eighty degrees (180) to assume a position lying alongside a side edge of the knife handle, away from the cutter blade.

Abstract: A surgical cutting instrument for performing endoscopic procedures such as carpal tunnel release. The cutting instrument consists of a tubular sheath or obturator constructed of a transparent material which is connected to a handle which includes means for securing a viewing instrument such as an endoscope thereto. A cutting blade is moved from a first protected or enclosed position to a second armed position, where only the blade edge is exposed at an opening in the obturator.

Abstract: A stock carton knife comprising an elongated handle having a pair of ends, a blade projecting from one end of the handle and having two lateral edges and an outer end, a lateral cutting notch in one of the lateral edges having a sharpened cutting edge and a laterally oriented mouth and including an inner sharp edge closer to the handle and an outer sharp edge farther away from the handle, the outer edge converging with the blade end to form a juncture with a blunt knob, the mouth being smaller in width than about one centimeter, and a diagonal guard plate on the blade along the inner edge, normal to and astraddle of the blade, with a first surface area toward the handle to protect the fingers of a user, and a second surface area toward the notch to limit depth of cut by the blade into a carton.

Abstract: A guard for a portable chain saw is provided that will prevent injury from saw "kick-back" and will assist in preventing injuries from a moving saw blade. The chain saw guard can be easily adapted to conventional chain saws by the use of ordinary hand tools and includes a motor housing bracket and blade bridge, which is slidably directed along the saw blade by a pair of attached rods that are slidably mounted to the housing bracket. A slotted blade guide bar receives a bridge guide to stabilize a vertical bridge component, and a resilient spring returns the bridge to its original, extended posture along the blade.

Abstract: A protective shield for a grass and weed trimmer which prohibits grass and weed clippings and other debris from reaching the operator. The shield is characterized by a clamping member for securing the shield to the trimmer, a supporting member attached to the clamping member, and a protective skirt for shielding the operator. The clamping member includes a two C-shaped members, coupled together at one end by a hinge, which fit around the shaft of the lawn trimmer. The support member includes a first and a second rod which extend perpendicularly from the clamping member such that the longitudinal axes of the rods are aligned when the clamping member is closed around the shaft of the trimmer. The protective skirt is generally rectangular in shape and includes a top side having two rectangular extensions on either side of a U-shaped cutout. A tubular sleeve is provided at the top end of each of the rectangular extensions to receive a respective one of the rods.

Abstract: The invention provides a saw guide for a power saw or router of the type having a blade and a saw housing wider than the blade which directly overlies the blade during cutting. The saw guide includes a guide bar having a straight outer edge for guiding a peripheral guide surface of the saw housing, a gauge bar having a straight outer edge, and a hinge pivotally connecting the gauge bar to the guide bar. The gauge bar can be swung manually from a position in which the gauge bar and guide bar lie parallel on top of a flat workpiece to a position where the hinge and gauge bar are clear of the straight outer edge of the guide bar so that the saw can move without obstruction along the straight outer edge of the guide bar.

Abstract: A food chopper and slicer knife mechanism for kitchen use comprising an elongated central blade of an extended length having a handle formed at each opposite end and a pair of internally spaced holes extending through the blade on opposite sides of the center of the central blade; a plurality of smaller supplemental blades positionable on opposite sides of the central blade and oriented parallel therewith, the supplemental blades each having a pair of laterally spaced holes extending therethrough on opposite sides of their centers, the central blade and supplemental blades having aligned cutting edges which are aligned parallel with one another when the holes are aligned about common axes; coupling components including a pair of threaded rods, each positionable through each of the aligned holes of the central and supplemental blades with locking knobs positionable at the ends of the rods; and cylindrical spacer disks positionable on the rods between adjacent blades.

Abstract: A knife comprising a handle, a blade mounted on the handle, a pair of side guards mounted on the handle and movable between an open position and a closed position. The pair of side guards enclose at least a portion of the blade when in the closed position. An actuating mechanism is provided for actuating the pair of guards between the open position and the closed position. The actuating mechanisms includes a button movable between a forward position and a rear position and operable with the pair of side guards such that when the button is in the forward position, the pair of side guards is moved to the open position and when the button is in the rear position, the pair of side guards is moved to the closed position. Preferably, the button includes two protrusions at the lower surface thereof which interact with receptacles formed by a notch in each side guard and the edges of the side guards such that when the button is moved within the slot, the side guards are cammed between the open and closed positions.

Abstract: Erroneous cutting prevention scissors include an operating member having a shearing blade, another operating member having a receiving portion provided in a closable and separable manner with respect to the shearing blade, and a detecting element for detecting a live condition of an electric wire when the shearing blade is in contact with a conductor of the electric wire. A solenoid is provided which is excited when the detecting means detects the live condition of the electric wire. A first latch mechanism operated by the solenoid is provided on the first operating member, and a second latch mechanism is provided on the other operating member.

Abstract: A flexible flail trimmer for conventional trimming of grass, weeds and other vegetation and for edging of sidewalks includes a rotatable combined guide and guard having a depth gage for providing positive vertical indexing during an edging operation. A trimmer is further disclosed as having a rotatable guide and guard which may be selectively fixed in a nonrotatable position. In this nonrotatable position, a second, rear guard may be attached to provide protection to the operator during conventional trimming operations. In further aspects, trimmer guards are disclosed for stabilizing the rotating flail to provide a cleaner, more even cut when the trimmer is used in conventional trimming operations.

Abstract: The present invention is directed to a letter opening device comprising an elongated tubular handle, a removable tubular cap and a generally L-shaped cutting guide including a cutting blade and a blade holder. The cutting guide is affixed to the forward end of the tubular handle and has an elongated nose portion which is adapted to fit underneath the flap of an envelope to be opened. The elongated nose portion has an elongated groove for receiving the sharp tip of the cutting blade. The blade holder is pivotally mounted to the cutting guide and can be moved to easily replace the blade. An elongated safety shield is slidably mounted inside the tubular handle for shielding the blade when the letter opening device is not in use. The shield has an actuating member attached thereto for moving the shield within the tubular handle.

Abstract: A stock carton knife comprising an elongated handle having a pair of ends, a blade projecting from one end of the handle and having two lateral edges and an outer end, a lateral cutting notch in one of the lateral edges having a sharpened cutting edge and a laterally oriented mouth and including an inner sharp edge closer to the handle and an outer sharp edge farther away from the handle, the outer edge converging with the blade end to form a juncture with a blunt knob, the mouth being smaller in width than about one centimeter, and a diagonal guard plate on the blade along the inner edge, normal to and astraddle of the blade, with a first surface area toward the handle to protect the fingers of a user, and a second surface area toward the notch to limit depth of cut by the blade into a carton.

Abstract: An object is to provide a coating removing apparatus and method in which it is not necessary to adjust the distance between edges of two, upper and lower, blades. An apparatus for removing a coating from a coated linear material, in which the upper blade is arranged so as to be brought into contact with the coating layer of the coated linear material, by its own weight, with a width in a direction perpendicular to the axis of the coated linear material.

Abstract: A hunting knife has a blade with an elongate cutting edge and a distal free end protected by washers so that the point of the knife is protected during the gutting of game. A central aperture is formed in the distal free end for receiving a screw, and the screw and a nut hold the washers in sandwiching relation to the point of the knife. When the knife is used in gutting, the washers prevent the point of the knife from making unwanted punctures. When the washers are removed, the sharpened distal free end may be used for skinning.

Abstract: A protective shield for a free-cutting tool having a rotatable cutting head with a cutting thread that extends radially upon rotation of the cutting head and thus defines a cutting plane, has a support section for fixedly connecting the shield to the tool above the cutting plane. A circumferential wall is connected to the support section and extends about a portion of the circumference of the cutting plane. The circumferential wall extends axially from the support section to at least the cutting plane and has axially extending lateral edges arranged perpendicular to a direction of rotation of the cutting head. The lateral edges each have a round transition into a bottom edge of the circumferential wall. A crosscutting blade for cutting to length the cutting thread is connected to the inside of the circumferential wall at its leading portion in the direction of rotation. The crosscutting blade extends over the axial height of the circumferential wall.

Abstract: An assembly for servicing a cruciform control blade includes a carriage having first and second crossarms each containing a generally U-shaped slot for receiving the top of the control blade. The first crossarm includes a clamping actuator to rigidly clamp the carriage to the blade top. The second crossarm includes a tool positionable adjacent to a roller aperture in a selected one of the four panels of the control blade. The tool is positioned on the second crossarm at a predetermined depth, and at a predetermined lateral span from the first crossarm so that upon mounting of the carriage on the blade top and actuation of the clamping actuator, the tool is vertically and laterally aligned with a center of the panel roller aperture. In one embodiment, the tool is effective to sever the roller from the panel aperture without damaging the panel, and in another embodiment the tool is effective for installing a replacement spacer pad in the aperture.

Abstract: An improved utility razor safety knife is disclosed. The knife hood is normally in the closed position where the blade is protected. The hood may be locked in the closed position by a sliding hood lock. The hood pivots into the open position, exposing the razor blade, when the knife is in use. The hood is stabilized in its movement and biased toward the closed position by a yoke with two legs which is attached to an arm on the handle. Springs on the yoke bias the hood toward the closed position. Springs of varying gauges may be used to vary the closing impulse on the hood. The legs of the yoke exert their influence through footing pieces which are received by socket-bearing footing rests attached to the sides of the hood. The footing rests stabilize the knife in an upright position when the knife is resting on a surface and also stabilize the razor blade during cutting.

Abstract: A fishing line cutter, a fishing rod with a fishing line cutter, and a fishing reel with a fishing line cutter; and in various embodiments; a fishing line cutter with a body, a sharp edged member for cutting line mounted to the body, and a plurality of fingers extending from the body to facilitate attaching the cutter to a fishing rod; a line cutter with dual opposed cutting edges; a line cutter with a shield movable to expose a cutting blade; a line cutter with a retractable blade; a line cutter with overlapping protective fingers past which a line passes prior to cutting; a line cutter with part of a body member movable to permit blade replacement; and in one aspect, a fishing line cutter with obstructions for partially blocking an opening in which a line cutting blade is exposed to inhibit or prevent inadvertent entry of the line into the opening or inadvertent entry of a device (such as an O-ring) into the opening, which device is used to secure the cutter to something, e.g.

Abstract: The invention relates to a blade-protecting device (13, 14) for cleaning units (1) being provided with a rotary cutter or blade (3) which is supported on a shaft (6) and which can be rotated by means of a motor (11). The shaft (6) is mounted in a body (8). The blade-protecting device (13, 14) comprises a hub part (13) having a diameter being smaller than the diameter or the largest dimension of the rotatable blade (3). This hub part (13) is arranged substantially coaxially with the shaft (6) adjacent the blade (3) and is freely rotatable relatively to the body (8). A number of fixed, substantially radially oriented arms (14) are rigidly attached to the hub part and extend past the periphery of the blade or of the circle described by the rotating blade, said arms (14) preferably being arranged in locations spaced equiangularly around the hub part.

Abstract: A safety blade has a cutting edge 41 formed with a plurality of protrusions or projections 42 extending in front of the blade in a comb structure which extends from one end of the cutting edge to the other. The projections prevent the edge from contacting skin, but do not prevent the cutting edge from performing its function. Such a blade may be used in kitchen utensils and cutlery, such as steak or fruit knives, or craft tools or the like.

Abstract: The scalpel includes a handle with a blade moveably mounted to it by a leaf spring. A blade protecting sheath is fixably mounted to the handle. In its normal position, the blade is within the sheath such that the cutting edge is protected. In order to expose the cutting edge, the blade is depressed against the force of the spring. When not in use, the blade may be locked within the sheath.

Abstract: A shield and structure for mounting the shield to a hand held grass trimmer is provided. The generally flat shield is perpendicularly mounted to a gear box extension which is carried coaxial with the drive shaft tube. Twisting and moment forces incurred by the shield when the trimmer is resting on the ground are reduced by mounting the shield to support the weight of the trimmer generally perpendicular to the length of the drive shaft tube. The mounting structure prevents sliding of the shield on the drive tube and provides multiple attaching members to prevent rotation of the shield on the drive tube.

Abstract: A cutting tool for cutting a sheet of compressible fibrous material. The cutting tool includes a blade which forms part of a cutting assembly which is mounted on a supporting base for movement between an upper position in which the blade is located above the material to be cut when the supporting base rests on the material which is to cut to a lower position in which the cutting blade extends below the supporting base. The cutting assembly is biased to the upper position and moved to the lower position by downward pressure from the hand of the operator which also causes the supporting base to compress the fibrous material so that when the cutting tool is moved longitudinally along the upper surface of the fibrous material, the material is cut by the blade.

Abstract: A hand-held tool is provided for scoring and severing an optical fiber. An elongate, generally hollow body has a longitudinal axis extending lengthwise thereof and defines a graspable handle for the tool. A plunger is reciprocally mounted in the hollow body for movement in a path generally in the direction of the longitudinal axis. An optical fiber is supported at one end of the body transverse to the longitudinal axis, and a deflector places the optical fiber under tension. A scoring probe is operatively associated with the plunger and movable therewith towards the fiber for scoring and severing the fiber extending across the path of movement of the scoring probe. An actuator lever is pivotally mounted on the body, operatively associated with the plunger, with a finger depressible portion exposed exteriorly of the body, for manual actuation while grasping the body to move the plunger and scoring probe towards the tensioned optical fiber.

Abstract: A device for deflecting air produced by the rotating blade of a circular saw in the direction of the front of the blade for dispersing sawdust accumulated in front of the kerf. The device comprises a lamella adjacent the side of the blade adapted to deflect the air through an aperture in the blade protector. A roof shape member located in front of the aperture deflect the incoming air downwardly to produce a flow of air in front of the blade over the board to be cut.

Abstract: A fishing line cutter, a fishing rod with a fishing line cutter, and a fishing reel with a fishing line cutter. In one embodiment of a fishing line cutter according to this invention, the cutter has a body, a sharp edged member for cutting line mounted to the body, and a plurality of fingers extending from the body to facilitate attaching the cutter to a fishing rod. In another embodiment, a cutter has dual opposed cutting edges. Another type of cutter has a shield which is movable to expose a cutting blade. In another embodiment, a cutter has a retractable blade. In another embodiment a cutter has overlapping protective fingers past which a line passes prior to cutting. In another embodiment, part of the body member is movable to permit blade replacement.

Abstract: A utility knife consisting of a flat blade holder is capable of being grasped from above. It contains opposing cutting blades mounted in slots in the holder such that each blade is clamped in place and may be laterally adjusted using a leverage system formed by several cuts in the holder itself. The holder has two guide surfaces joined at an obtuse angle so that when one is in contact with the material for cutting the other is elevated above it and vice versa. In use the first guide surface and blade is placed against the material for cutting and the holder is drawn in a first direction thereby cutting the material with the rearward facing blade until reaching a corner, whereby the forward raised blade abuts the corner. The forward guide edge and blade is lowered into contact with the material for cutting thereby raising the rearward blade and the holder is now drawn in the reverse direction thereby completing the cut without the need to turn the knife around or lift it from the cutting surface.

Abstract: A knife for cutting honeycomb core and other materials with a combination of safety features to prevent or minimize injury to operator. The blade used has a hole through which a fastening device e.g. threaded screw, locks it to a handgrip. A safety guard covers the blade when not in use and automatically retracts as the blade is removed from the workpiece. The guard cannot be accidently displaced from the blade. It must be purposely unlocked by a manually triggered self-locking release assembly located in the handgrip which also automatically relocks the safety guard when retracted. The safety features consist of an automatically retractable guard attached to a safety handshield working in conjunction with the safety self-locking release assembly to prevent accidental release.

Abstract: An apparatus for cutting a roofing membrane is described. The apparatus includes a frame, means coupled to the frame for facilitating movement of the frame over a roofing membrane, a blade coupled to the frame for cutting the roofing membrane, and a guide member coupled to the frame for guiding the frame over the membrane. The guide member may include an edge guide and a bar coupling the edge guide to the frame. The edge guide is adapted to cooperate with an edge of the roofing membrane to move the frame along and parallel to the edge of the membrane. The guide member may be adjustable to permit the edge guide to be moved relative to the blade.

Abstract: A knife of the kind having a blade (14, 43) and a handle has an extendible and retractable blade edge guard (16, 45). When the blade (14, 43) is extended, any violent movement of the knife with the cutting edge in a leading attitude acts inertially to disengage a detent (27, 55) from a recess (28, 57) in the guard (16, 45) so that a tension spring (17, 46) quickly extends the guard (16, 45) into its projecting, operative position to guard the blade edge (21, 50) and prevent at least serious injury. When the blade carrier (13, 42) is fully retracted, its engagement with a part (31, 58) of the guard (16, 45) causes that also to retract and be engaged again by the detent (27, 55) due to spring-bias.

Abstract: A flower stem cutter unit includes a small decanter sufficient to cover the lower end of a flower stem projecting into the decanter. A guillotine blade unit is secured to a cover and projects into the decanter. A guide wall projects inwardly from a cover opening and terminates in a vertical fixed blade support wall having a flat cutting blade secured thereto. The wall and blade have an opening to receive the stem. The movable blade unit has a supporting stem extending through said cover and an integral vertical blade support abutting said fixed blade. A guillotine blade is fixed to the inner face of the vertical blade support to form the integrated unit. The blade and is secured in angular relationship to the fixed blade and moves progressively over the cutting edge of the fixed blade. A finger gripping tab projects outwardly from the movable blade support for periodic replacement of the movable blade unit.

Abstract: Rotary scalpel blade and blade protector structure. The rotary scalpel blade in one embodiment is circular and has a sharpened outer periphery and an opening through the center thereof for securing the blade to means for rotating the blade. In modifications of the circular scalpel blade the sides of the scalpel blade may be concave, depressed or flat with an annular groove around the outer periphery thereof. The rotary scalpel blade may also be a linear radial scalpel blade sharpened on one or both edges. The blade protector structure in one embodiment includes a disc having a disc shaped pocket in the center thereof split centrally to receive a scalpel blade, held together with a living hinge and locked in closed position by a split cylinder positioned over a cylindrical flange on one side of the blade protector.

Abstract: A guard for a power trimming device of the type having a rotating cutting element partially enclosed about a short arcuate extent by a housing is formed from a rigid bar having a generally circular configuration with an open front portion formed by outwardly flared ends. A plurality of transverse apertures extend through the bar opposite the open front portion and receive threaded fasteners which secure the guard to the housing. The front portion of the guard allows trimming of brush and other vegetation, but protects fence posts, tree trunks and the like from damage through contact with the cutting element. The guard also provides an additional protection against injury to an operator. In a second embodiment, a compound adjustable bracket is utilized to secure the guard to the trimming device.

Abstract: A cutter attachment for a mono-filament type trimmer implement which includes a pivotal spacer assuring distance between the rotating string and the area under maintenance. Provision is made for readily mounting the attachment onto the implement and, as well, a locking arrangement serves to maintain the spacer in either an operative or a non-operative position. The configuration and/or design of the spacer permits selective movement in forward, rearward and lateral directions.

Abstract: A brushcutter has a guide wand with a drive head rotatably mounted thereon. A motor rotatably drives the drive head and a cutting head for cutting vegetation is mounted on the drive head and defines a rotational plane. A protective arrangement partially overlaps the cutting tool in the region of the rotational plane and has a downwardly extending wall. A detachable skirt extends from the wall downwardly so as to terminate at an elevation beneath the rotational plane and deflects stones and other hard objects caught by the cutting tool thereby protecting an operator of the brushcutter against injury.

Abstract: The invention includes a power operated circular type hand saw having a motor disposed within a housing, a rotating circular sawblade driven by the motor, and a work supporting shoe which is pivotally attached to the housing and moveable relative to the housing to adjust the depth to which the saw blade extends below the shoe. The motor supporting housing includes a locking arrangement and a depth limiting stop plate moveable relative to the housing, the stop plate having a depth limiting ear and a clasp, the clasp is adapted to lock the stop plate in a wide range of depth limiting positions.

Abstract: A hand knife 20 of the type used for trimming meat with a rotary gear-driven ring-like blade 34 guided by a ring-like housing 30 and retained by a pivoted retainer 36. The blade has a concave inner surface 96, a peripheral retaining groove 45 with a frusto-conical surface 90, and a reduced diameter outer cylindrical surface 93 to accommodate the retainer. An improved adjusting knob 124 and securing member 40 hold the retainer 36 in proper position.

Abstract: A straight edge cutter guide for use when cutting a web such as wallpaper after it has been hung on a support surface which is normal to or inclined with respect to the horizontal plane comprises a blade, a handle and spirit level indicators. The blade is rigid and has a straight edge extending longitudinally along one edge thereof. The bottom face is flat and has a sufficient area to provide a stable base for the cutter guide. The handle is mounted on said base and has a hand grip portion located above the top face. The hand portion is accessible for use when retaining the base in any required position with its bottom face bearing against a web in use. The level indicators are mounted on the cutter guide so as to be visible when said bottom face is operably located.

Abstract: A guard made for hunters to aid them in field dressing animals in woods or cutting them in camp, with no fear of cutting hand or animals gut. He uses this guard with his own hunting knife making the job quick and easy. The guard is also a whistle, in case of an emergency the hunter can signal hunting partner or near by hunters. It can easily be carried in hunters pocket, it's only six and three quarters inchs long, and it'open from end to end for easy cleaning.

Abstract: A knife, such as a surgical scalpel or a handymans knife has a protective blade cover (3) moulded integrally with the handle of the knife. The end portion of the knife and the cover are both formed in mating halves about a common fold line and the knife blade is secured by folding the halves over each other to trap the blade and securing, as by welding, The cover has a part-circular recess (5) to receive a part-circular tip (7) at the end of the handle. The knife and cover are connected together only by a frangible web between the recess (5) and the tip (7). When the web is ruptured for first removal of the cover, the tip (7) has snap-fitting engagement in the recess (5) to permit replacement and retention of the cover.