Abstract: The shaft parts of a laying knife are pivotable against one another in scissor-like manner with a joint for opening purposes and in the use position are prevented from rotating by a plug-in bolt constructed as a blade magazine and are prevented from spreading by front and rear locking devices, a rear knocking surface of the handle shaft being continuously formed by a single shaft part. This leads to very simple operation with high stability of the handle shaft.

Abstract: A lever locking knife with reversing blade having a handle with a slotted recess therein for removably receiving the blade, the handle having a lever pivoted from it, now the blade having a notch that receives a portion of the lever when the lever is in the closed position to hold the blade either in the extended, usable position, or received within the handle recess.

Abstract: A hamburger patty knife is provided which comprises a handle and a transition piece at one end of the handle forming an angle with the longitudinal axis of the handle. A flat plate extends away from the transition piece in a forward longitudinal direction. A blade attachment is provided having a beveled front edge. A structure is for securing the blade attachment to a distal edge of the plate in a removable manner. The beveled front edge of the blade attachment can be used to pick up and turn over a hamburger patty without disrupting the shape of the hamburger patty. Alternatively the blade can be installed in an upside down position which is extremely useful for cleaning dirty grills and pans.

Abstract: A cartridge for an implement is described for holding the implement and for permitting access by a tool to which the implement is to be mounted, the cartridge comprising a housing and a releasable block for inhibiting the implement from moving in a rearward direction out of the housing. In a specific embodiment, the cartridge is a scalpel arming cartridge for holding a scalpel blade wherein the releasable block is a rearward releasable block for inhibiting the blade from moving in a rearward direction and out of the housing.

Abstract: A tool holder, particularly for longitudinally extending saw blade having a flat shaft, the tool holder has two walls defining a slot therebetween for insertion of a tool, a dowel arranged in one of the walls perpendicularly to the slot and engageable in a passage of a tool shaft and a spring-loaded clamping member to press the tool against one of the walls.

Abstract: An apparatus is disclosed whereby a detachable surgical blade is easily and effectively removed from blade handle adapted for use with detachable surgical blades. The apparatus is a two part assembly comprising a scalpel handle and a blade release slide element. The handle includes a blade mounting tang on the proximal end thereof and a grip on the distal end thereof. The handle has dimensions such that a portion of the rear edge of the scalpel blade protrudes latitudinally beyond the perimeter of that portion of the grip adjacent to the tang. The blade release slide element is slidably mountable on the handle and is of a length such that, when in assembled relation with the handle, the blade release slide element extends forwardly from an intermediate section of the grip to a section of the grip rearward of the tang.

Abstract: A scalpel including an elongated handle having an engaging surface located on the handle, a blade carried by the handle adjacent one end thereof and a guard movably mounted to the handle for sliding movement relative to the handle between a protective position covering the blade and a retracted position exposing the blade for use. The guard includes side members extending downwardly from an upper surface. The side members are positioned adjacent opposite sides of the handle and the resiliency of the guard forces the inner surfaces of the side members into engagement with the engaging surface of the handle. The guard is movably along the engaging surface in response to sliding movement of the guard relative to the handle. In a further form, the guard is slidable into a permanently locked position relative to the handle, thereby preventing reuse of the scalpel and inadvertent exposure of the blade.

Abstract: The scalpel includes a handle mounting a scalpel blade at one end and having a slot opening through and between its opposite sides. A guard, including two side members straddling the handle, is mounted for sliding movement between a protective position overlying the blade and a retracted position exposing the blade for use. The side members are connected by an element extending through the handle slot and one or more resilient fingers in the slot cooperates with the element to detent the guard in one of the positions. In a further form, the guard is slidable into a permanently locked position relative to the handle, thereby preventing reuse of the scalpel and inadvertent exposure of the blade.

Abstract: The invention provides a hand held razor-containing cutting device formed from two separable halves that are connected together during use along a centrally located longitudinally extending parting line. The two halves of the tool are held in contact with one another by means of frictional connecting elements that allow the halves of the tool to snap together for use. A pair of adjacent disassembly tabs are provided. One such tab is located on each half of the tool to facilitate separating the halves of the tool by prying the halves apart, usually with a screwdriver or similar tool that is placed between the tabs and then twisted to pry the tabs away from one another for separating the two portions of the cutting device so that the razor blade can be removed and replaced when required. The frictional connecting elements comprise C-shaped cooperating retaining studs that extend from one half of the tool and during assembly snap into openings provided in the other half.

Abstract: A combination surgical blade holder allows simple insertion sequentially of a plurality of blades, each blade having an opening for receiving a cleat and/or an abutment in a blade receiving area on the holder. The holder includes a fixed portion and a rotatable portion that pivot relative to one another in the same longitudinal plane around a pivot point positioned adjacent the blade receiving area and lock together to securely hold the blade in the blade receiving area. While the fixed portion of the holder is gripped in one hand, the thumb or finger of the same hand is used to unlock and rotate the rotatable portion to release and eject the blade singlehandedly, without touching the blade. The fixed portion of the holder includes a cleat and/or an abutment that mate with an opening in the blade. Alternatively, the blade includes a tab that mates with a depression in the blade receiving area to lock the blade in the holder.

Abstract: A collet for attaching a blade to a surgical saw is biased toward a closed position in which the blade is securely clamped between a drive member and a clamping member. A rotational movement of a knob is converted into a translational movement of the clamp to open the collet. A mechanism is provided for maintaining the collet in the open position for simplified operation and cleaning.

Abstract: A blade with a cutting part on one edge portion thereof has a remote end fixed in a chuck by pushing same end-wise into a slot in the chuck through a series of positions, namely (1) drop-out, (2) safety locked-in and (3) fully inserted locked-in.

Abstract: A combination of surgical blade holder and cooperating blade is provided, which allows simple insertion of a blade having a specific configuration of opening in the tang for receiving a specific boss configuration on the handle, and closure to a locked position of the blade, upon insertion. The two parts of the handle pivot relative to one another in the same longitudinal plane around a pivot positioned adjacent the blade portion. This allows a relatively long handle portion for gripping the device for ejecting the blade, using the thumb or finger of the same hand for opening the holder. The gripping portion of the handle has adjacent to the blade portion thereof a boss which conforms to the opening in the blade tang. The boss includes a cleat with an overhang which serves to receive the opposed mating surface on the opposite half of the handle.

Abstract: A dental tool with detachable saw blades and adhesively affixed abrasive strips on the distal ends of a U shaped handle for removing the solified resin in posterior and anterior teeth during the placement of porcelain and composite inlays while keeping the tongue and cheek away from the cutting surfaces. The primary function of the tool is provided by a finger rest to direct the tool force in a gingival direction with stability and control improving the function and safety of the tool.

Abstract: A cutter for removing thorns from cactus is disclosed including a fork shaped member having a pair of prongs pivotably connected together at one end and having tabs at free ends received in traverse slots in a conventional wafer type razor blade. A tie member holds the prongs in a spacing to flex the razor blade into a concavo convex shape with the convex surface facing outwardly from the free ends of the cutting edge of the blade perpendicular to the plane of the prongs.

Abstract: A handle is provided for blades, and particularly surgical blades, which allows simple insertion sequentially of a plurality of blades, and closure to a locked postion of the blade, upon insertion. The two parts of the handle pivot relative to one another in the same longitudinal plane around a pivot positioned adjacent the blade position. This allows a relatively long handle portion for gripping the device for ejecting the blade, using the thumb or finger of the same hand for opening the holder for ejection single-handedly. The gripping portion of the handle has adjacent to the blade portion thereof a boss which conforms to the opening in the blade tang. Closure causes the movble portion of the handle to cover the boss and the blade tang in a wedging action preventing movement of the blade relative to the handle in closed position.

Abstract: A hand-held tool for carrying a scraping/stripping blade. The tool includes a base element, generally T-shaped in outline, including a handle and a blade receiver with a fixed jaw face oriented toward the central plane of the tool, and a lever aperture extending through the blade receiver adjacent to the handle. A locking aperture in formed in the handle remote from the blade receiver means, with a locking rail disposed therein, oriented generally parallel to the blade receiver. A blade clamp is pivotally attached to the base element and includes a movable jaw face and a perpendicular blade clamping lever, divided into three portions in a zig-zag pattern, carrying a latch, adapted to engage the locking rail at its extremity, and an unlocking point at its distal end. The blade clamp pivots on an axis at the base of the fixed jaw face and the clamping lever extends through the lever aperture and into the locking aperture.

Abstract: A slot blade holder is provided and consists of a mechanism for securing the rear flange of a standard single edge razor blade at its central aperture transversely within a slot in the forward flattened end of a handle, so that the front cutting edge of the razor blade is in a position to remove various materials from flat surfaces and cut materials when used in conjunction with a straight edge.

Abstract: A surgical instrument provides a handle for removably attaching blades having different sizes and different purposes for performing different surgical procedures.

Abstract: A telephone wire connector blade storage device, for use with an impact force insertion tool, comprises a generally rectangular shaped housing, the interior of which is divided into a plurality of blade storage bins which extend longitudinally through and are accessible by way of an end cap at one end of the housing. Protruding from the opposite end of the housing is a stem that is sized and shaped to be engageable with a bore in the rear end of the insertion tool, so as to enable the storage device to be fixedly attached to the handle at a location that does not interfere with the operation of the tool. In addition, the shape of the rectangular housing approximates that of the rear end of the tool handle, so as to facilitate manipulation of the handle by the craftsperson during use of the tool.

Abstract: In this invention, an improved scalpel blade holder for holding a conventional scalpel blade is disclosed. The conventional scalpel blade has two elongated holes that are coextensive with one another. Each of the holes has a length and a width with the holes being attached to one another in the length direction and the hole near the blade portion having a width smaller than the hole away from the blade portion. The blade holder has an elongated handle member having a distal end and a proximal end along the length. A support member is near the distal end. The support member has a groove along the periphery parallel to the length direction. The width of the support member between the groove is substantially equal to the width of the smaller hole of the blade. The length of the support member is less than the sum of the lengths of the two holes in the blade.

Abstract: A cutter is composed of a blade body and a stem. The blade body has an engage hole made up of a grip hole and a lock hole which is narrower than the grip hole and is extended to and connected with the grip hole. A peripheral portion of the lock hole defines a marginal portion. The stem has a blade body mounting section for supporting the blade body being put thereon. The blade body mounting section includes an engage projection adapted to be fitted in the engage hole of the blade body. The engage projection has a lock groove for receiving the marginal portion. The stem is provided with a push member adapted when controlled to push a first portion, on the side of the grip hole, of the blade body, whereby in response to the pushing action of the push member a second portion, substantially facing the grip hole, of the blade body is curved and separated from the engage projection.

Abstract: A hand held device for maintaining a double edged razor blade in a curved position. The device includes a handle member having a razor blade retaining channel at one end and a finger grip at the other. A malleable metal razor blade support protruding from below the razor blade retainer end is adapted for threading through the central apertures of a conventional double edged razor blade. The malleable metal blade support is then bent to maintain the cutting edges of the razor in a curved position.

Abstract: A cutting device including a handle and blade. The blade being detachably connectable to the handle, and the handle including a guidance mechanism. This guidance mechanism has a convex peripheral edge and is rotatively connected to the handle. The cutting device also includes an engagement and disengagement mechanism for operatively interrelating the blade with the guidance mechanism.

Abstract: A detachable cutting blade assembly includes an elongated handle having a rear end and a front end on which a cutting blade can be detachably supported and a blade-locking member, in the form of a wall, is secured to the top surface of the front end of the handle. A portion of the wall of the blade-locking member has lateral lips which give the wall a T-shaped cross section and this provides securement for a cutting blade. The lips of the blade-locking member are aligned with a hole in the handle and this permits the entire handle to be made with a two-part mold in a relatively inexpensive molding process.

Abstract: A mechanism for mounting and removing a blade having an elongated slot mounting means from a blade handle which has a mounting boss for insertion into the elongated slot. The mechanism includes a handle guide forming one side of a passageway for insertion of the handle therethrough, the handle guide having a flexible body which is sufficiently flexible to allow deflection of the handle for withdrawal of the boss out of mating relationship with the elongated slot. The mechanism further includes blade extracting means fixed opposite the handle guide forming a second side of the passageway and having a blade retaining projection arranged adjacent the passageway which can be actuated to prevent withdrawal of a blade from the passageway.

Abstract: The saw blade for an electric compass- or keyhole-saw has a saw part with a tooth arrangement and a clamping part with which the saw blade is clamped between two clamping pieces of a clamping device of the compass- or keyhole-saw with a clamping screw to hold parts together in clamped relationship. The clamping part has a centering opening and a plug or insert opening for the tensioning or clamping screw. The plug or insert opening is delimited or bounded by two clamping tongues laterally thereof. The relationship or ratio of the width of the clamping part measured transverse to the longitudinal axis of the saw blade with respect to the length lies in a range of approximately 1:1.4. The relationship or ratio of the length of the plug or insert opening to the width thereof lies in a range between approximately 1:0.7 to approximately 1:1.1. The clamping tongues are constructed respectively having approximately square or rectangular shape.

Abstract: A hand held knife for use in cutting carpet pads. A speciality type utility knife used principally for cutting carpet pads has a handle configured such that a straight edged cutting blade releasably held in the handle provides a slicing action in contrast to a cutting action on the carpet pad. The knife unit is fabricated with two substantially mirror image halves which are divided at a median plane. A thumbwheel rotatably mounted in one of the halves and threadably engaged with the second half permits the ready separation of the two halves a distance necessary for rotation of one-half with respect to the other for the removal of a knife blade from an internal storage compartment and its insertion in the proper cutting position. Because of the simplicity of the separation of the components and the slicing action of the knife blade, fatigue to a user of this device is substantially reduced.

Abstract: A one piece blade holder having a handle portion for serving as a hand grip when the holder is used as a razor blade scraping tool. A plurality of opposed, interdigitated finger members extend from the handle portion and operate to hold a blade having a cutting edge in either a cutting edge exposed or cutting edge protected position. A pivoted locking member is provided for engaging the blade in either of said positions, the locking member has means for releasably engaging the blade and is pivotable between a rest position in which the blade is engaged with a locking pin and a pivoted position in which the blade is released from engagement with the locking pin.

Abstract: A knive having a tubular handle and provided with an open end for receiving a pair of blade clamping members in the form of leaf springs, one of the leaf springs being longer than the other leaf spring and having a projecting tab for insertion into a hole in the shank of a blade to be coupled to the handle. The inner end of the longer leaf spring is coupled to a slidable member having a knob projecting through and movable longitudinally of a slot in the handle. Movement of the slide member in one direction causes the projecting tab on the longer leaf spring to become exposed for coupling the blade shank to the leaf spring. Movement of the slide member in the opposite direction causes the longer leaf spring to be retracted fully into the handle so that the blade will be centered between the two leaf springs while projecting outwardly from the handle to expose the cutting edge of the blade.

Abstract: A low profile precision knife with a quick-change or safety storable blade. The blade holding handle being stamp formed from a minimum of two parts, namely a metal spring slide and a metal housing. The spring slide adapted to slidably fit the housing is provided with a flexible tang that is receivable to an aperture in the blade's shank. Securement of the blade is made by pulling on a projection on the spring slide at the knife handle's rear, thereby causing longitudinal bends and a tang, through the blade's aperture, to exert deformed pressure against the blade shank and an internal projecting nub in the housing when it is brought to its detent position against parallel shoulders on the blade. Removal of the blade is made by pushing forward with a finger on the slide projection at the rear of the knife. The blade can be safety stored by reversing the cutting edge into the housing when the spring slide is fully extended.

Abstract: A tool for facilitating the cutting of carpet which has been installed on a floor surface by glueing, or the lie, the tool comprising a pair of substantially identical plates secured in planar abutting relation, each plate being provided with an angularly orientated recess on the inwardly directed surface thereof, each recess for slidably receiving a cutting blade therein, fastening members are provided for removably securing the blades within the respective recess and for facilitating longitudinal adjustment of each blade within its respective recess for exposing a selected cutting edge of a blade for accomplishing the cutting operation, and an elongated handle member pivotally secured to the plates whereby the cutting tool may be moved across the surface of the carpet during the cutting operation while the operator of the tool remains in a substantially upright position.

Abstract: A handle for removably holding a substantially planar surgical blade having a slot therein comprises a rearward end to be held by the user and a forward end. An elongate tang at the forward end includes a proximal end, a distal end and a boss projecting outwardly from a side of the tang adjacent to the distal end thereof. This tang includes a pair of opposed longitudinal grooves extending from the distal end to the proximal end of the tang wherein the grooves run substantially along the interface of the tang and the boss. The tang also includes a relief recess projecting into the boss to a depth at least as deep as that portion of the boss extending outwardly from the grooves. The recess divides the boss into a forward boss portion and a rearward boss portion.

Abstract: A cutting and scraping device is formed of two substantially identical sections which are joined together to form a slot which receives a razor blade having a blade edge and a handle edge. A locking member is provided to lock the blade in place with either its blade edge or handle edge exposed.

Abstract: A holder for releasably securing an elongated bar, e.g. a cutting blade, to a drive-means comprises: (a) a holder body adapted to be connected to the drive means and having a substantially flat outer face for guiding and holding the bar; (b) an engaging means biased outwardly from the flat outer face to engage a hole in the bar; and (c) a wall spaced apart from and opposing the flat outer face and connected thereto by a spacing means to form a guiding recess for the bar formed along a longitudinal side edge of the flat outer face and having openings at both longitudinal ends of that face. An elongated cutting blade can be adapted to fit in this holder and the blade-holder combination is especially useful on rotary lawn mowers. The blade is quickly and easily released from the holder for sharpening or replacement.

Abstract: A carpet layers knife made for easy replacement of a replaceable blade which includes a blade holding portion and a handle portion; the blade holding portion provided with an internal shoulder to guide the blade into and out of the knife without dulling the blade, and a connecting element holding the elements of the knife together, the connecting element being positioned to be out of the path of the blade as it is inserted and retracted but capable of holding the blade firmly in its tightened position while providing a passageway for insertion and removal of the blade in its loosened position.

Abstract: A knife particularly for opening corrugated board cartons efficiently and safely without damaging the carton contents includes a forward end receptor slot for a standard single edge razor blade which positions the cutting edge of the blade below and forwardly of the hand grip portion of the knife for safety. An automatically retractable and recloseable blade guard having a cantilevered connection with the hand grip portion of the knife also serves as a cover for a blade storage compartment in the hand grip portion and is permanently attached to the knife to preclude loss. Depth of cut is limited to avoid damaging carton contents.

Abstract: A mountaineering implement comprises a handle (1), a toolhead (3) mounted at one end (2) of the handle (1) and at least one tool (4, 5) releasably fixed to the toolhead (3). The toolhead has a slot (8) and the tool has a plate-like appendage (18, 26) slidably inserted and locked within this slot. Two opposing flat faces of the slot each have at least one rib (10) extending parallel to the direction of sliding of the plate-like appendage (18, 26) in the slot and each of these ribs (10) is engaged in a corresponding groove (20, 28) formed in the surface (19, 27) of the plate-like appendage of the tool (4, 5). In a preferred embodiment, the toolhead is constituted by a folded sheet-metal blank and provides for the use of two tools, the plate-like appendages of which engage in opposite ends of the slot and have complementarily-stepped ends (21, 29) which contact each other.

Abstract: A jack knife which may be disassembled with a minimum of tools for purposes of cleaning the interior, changing blades or the like. The knife has a pair of liner side plates encasing a backspring and thereby providing a compartment for receiving a knife blade. Each of the side plates has a slot of nonuniform width near the head end for receiving an annularly grooved pin. This pin also passes through the head end of the backspring. A pivot through the back-spring engages a cooperative pair of apertures in the side plates and provides a pivot for the rotation of the side plates with respect to each other when disassembly is desired. A blade pivot member passes through one side plate and through an opening in the tang of the knife blade and thence is suitably engaged with the second side plate.

Abstract: A hand operated tool for cutting and trimming materials, such as carpet, wallpaper and like covering materials. The tool is particularly useful in the hanging of wall coverings and is made up of a pair of mating half sections, which form an elongated handle and a blade-holding socket disposed in angular relation to the major axis of the handle with a finger engaging area designed to assist the user in applying cutting force to the blade. A quick, disconnect anchor device is provided whereby a single spring biased pin is movable transversely through the walls of the blade-holding socket and an opening formed in the blade itself for locking the blade in operating position between angulated wall-engaging guide means, extending substantially along opposite sides of the blade's cutting edge.

Abstract: A knife and sheath combination in which a spring loaded detent projects from the handle of the knife to engage an extension of the sheath whereby the knife is locked into the sheath against inadvertent removal. The knife handle is secured to the knife blade by an assembly that includes the spring loaded detent. The assembly can be removed to separate the handle and the blade for cleaning.

Abstract: The invention relates to a device for a knife handle (3, 4) which is provided with a detachable knife blade (1). Fitted in the knife handle (3, 4) are spring members (6, 7) which engage securely with hooks (8, 9) in holes (10, 11) in the knife blade (1). The device according to the invention constitutes an easily handled release mechanism for the knife blade (1) and at the same time is so situated and constructed that it minimized the risk of accidental release of the knife blade. For this purpose, the device is distinguished by a control member (13) which is mounted at the opposite end of the handle (3, 4) to the knife blade (1) and is displaceable in the direction towards and away from the knife blade in the longitudinal direction thereof.

Abstract: A replaceable blade type knife in which the blade is replaced at an intermediate point between opposite longitudinal ends of the case body so as to improve the operational efficiency and safety of the knife. The knife includes a restrictive arrangement for enabling dismounting of the sliding member from the guide grooves of the case body at a specific position within the guide stroke of the sliding member other than at the opposite ends of the guide stroke and for unreleasably restricting the sliding member in the guide grooves of the case body at positions other than the specific position so as to allow the sliding member to slide in the guide grooves of the case body, and thus, the knife has been made compact in size so as to be suitable for portable use, with a wide range of application to office works, handicraft, etc.

Abstract: An attaching assembly for releasably attaching an osteotomy saw blade in a drive assembly. The attaching assembly comprises a drive member including a head portion having a slot adapted to receive an end portion of blade with a larger portion of an aperture in the blade aligned with a socket in the head portion, and a projection on the blade positioned in one of a plurality of notches in the head portion communicating with the slot. A locking button mounted in the socket is movable between a locking position (to which it is biased) at which a slightly tapered locking portion of the button is in engagement with walls defining the larger portion of the aperture to lock the blade in the attaching assembly; and a release position at which a narrow portion of the button is aligned with the slot so that the blade can be slid into or out of the slot with walls of the blade defining a narrow portion of the aperture communicating with an edge of the blade sliding past the narrow portion of the button.

Abstract: A waistline supportable dispenser for a plurality of "shuriken" i.e. an Oriental term denoting martial arts throwing stars. Disclosed herein are novel "shuriken" having elliptical central openings and having a front-face that is preferably dually recessed at the terminii of the elliptical opening minor-axis. The dispenser for such novel "shuriken" comprises: a rack member having support means to permit removable attachment as belt buckle or otherwise at waistline apparel level; a horizontal peg extending rigidly forwardly of the rack member upright frontal-side, the "shurikens" rotatably surrounding the peg trail-length; and spring means yieldably urging the leadmost "shuriken" against the peg cross-sectionally ellipsoid lead-length, whereby the "shurikens" can be individually dispensed by counter-rotation until its central opening major-axis becomes parallel to the broadest-extent of the peg lead-length.

Abstract: A useful device, such as a cutting implement, is provided for suspending from a key ring or the like. For example, the cutting implement comprises an elongated blade having a cutting edge along at least one edge. The blade is further comprised of a substantially cylindrical first mounting sleeve through one end of the blade. An elongated sheath is provided which has an enclosure along a portion of the length of the sheath. The enclosure is open along its length. The enclosure engages the blade and contains the cutting edge of the blade when the implement is in the closed position. The sheath further has a substantially cylindrical second mounting sleeve through one end of the sheath. One of the sleeves is removably nested within the other sleeve to provide a securing device for detachably and pivotally connecting the blade and sheath. This type securing device may also be utilized on other useful devices, for securing such devices to a key ring or the like.

Abstract: A knife having an elongated holder provided therein with a channel to the exterior at its upper side through a slot provided in the top wall of the holder, a blade carrier having a slider slidably received by the channel of the holder, and a blade detachably secured to the blade carrier through an engagement between a projection formed on the front end portion of the slider and an aperture formed in the base portion of the blade. The knife further has a spring or the like for resiliently biasing the front end portion of the slider to bring the projection into engagement with the cooperating aperture in the blade, and a manually depressable finger portion for causing a downward movement of the front end portion of the slider to disengage the projection from the aperture in the blade against the resilient biasing force. The finger portion, which is integral with the slider through the slot, has a width greater than that of the slot, so that the finger portion cannot be depressed normally.

Abstract: A blade locking mechanism formed integrally on the end of an elongated instrument handle permitting available slot mounted disposable surgical blades to be attached perpendicular to the axis of the handle service end for use as a knife in applications such as oral surgery. A cleat formed in the service end of the handle projects therefrom in line with the axis of the handle end. The base of the cleat has a rectangular cross-section sized to have a sliding fit within the minimum slot dimension of the disposable blade, and of a length greater than the thickness of the blade. The horns of the cleat lie in a plane perpendicular to the handle service end and are sized to pass easily through the maximum blade slot dimension when in line therewith, but prevent removal of the blade from under the cleat horns when the blade is turned 90.degree. to the axis of the cleat horns and the blade slot is fitted about the cleat base.

Abstract: A hand held device is provided which permits safe removal of used blades from scalpels or the like in which a slotted blade is received in opposed lateral grooves in a thin elongate tang with a proximal region of the blade located behind the tang in a cut-away laterally convergent region intermediate the tang and the handle. The device includes a base wall over whose surface the scalpel is advanced and having laterally opposed protuberant regions over which the blade slides. A slot between the protuberant regions which receives the tang but not the blade. A fully inserted position of the scalpel is defined by abutment between the proximal edges of the protuberant regions and said convergent region.

Abstract: A hand-held tool for carrying a scraping/stripping blade. The tool includes a base element, .[.generally T-shaped in outline.]., including a handle and a blade receiver with a fixed jaw face oriented toward the central plane of the tool, and a lever aperture extending through the blade receiver adjacent to the handle. A locking aperture .[.in.]. .Iadd.is .Iaddend.formed in the handle remote from the blade receiver means, with a locking rail disposed therein, oriented generally parallel to the blade receiver. A blade clamp is pivotally attached to the base element and includes a movable jaw face and a perpendicular blade clamping lever, divided into three portions in a zig-zag pattern, carrying a latch, adapted to engage the locking rail at its extremity, and an unlocking point at its distal end. The blade clamp pivots on an axis at the base of the fixed jaw face and the clamping lever extends through the lever aperture and into the locking aperture.