Abstract: A folding knife is disclosed having a unique locking mechanism which prevents the blade from being closed when the knife is in use. The locking mechanism provides a rolling lock carried by the knife mechanism having a lever that is movable between two positions. In an unlocked position, the blade may be rotated between the extended and closed positions. With the lever in the locked position, the blade is held in the extended position. The blade provides a base having a cam surface and a notch in that surface. The rolling lock provides a cylindrical body having a notch. When the rolling lock lever is in the unlocked position and the blade is extended, the notch in the cylindrical body of the rolling lock occupies the same space as the notch in the cam surface of the blade, allowing the cam surface of the base of the blade to rotate through the notch in the rolling lock.

Abstract: A tri-fold knife is provided which has a blade having a tang and bifurcated handle. The handle has a main handle which has a forward end which is pivotably attached to the tang. The main handle terminates in a butt end. A tail handle is provided with a forward engaging end and a butt end coupling which pivotably engages the butt end of the main handle. The main handle is provided with a main handle slot and the tail handle is provided with a tail handle slot which connects with the main handle slot. When the main handle forward end engages the tail handle forward engaging end, a knife handle is formed. When the tail handle is end to end with the main handle, the slots form a sheath into which the knife blade can be pivoted. Preferably, locks are provided to hold the blade with respect to the main handle when the knife is opened and the blade is exposed. A lock is also provided to hold the blade in the closed position where the blade lies in the main handle slot and the tail handle slot.

Abstract: The invention is a folding knife with a shackle. The shackle can be opened from a remote location by a shackle retractor mechanism made up of a retractor, a spring and a closure element. Each can be sited at a variety of locations on a knife. The retraction mechanism can be actuated by a knob, nut, handle, gear, cam or lift unit and can be attached to the shackle closure by a rod, "cord," chain, wire or similar means. The cord can be woven, plaited or twisted and of metal and/or non-metal composition.

Abstract: A cam lock for the folding blade of a knife is disclosed herein wherein the heel of the knife is pivotally carried between opposite sides at one end of a handle. The handle includes an elongated slot defined between opposing surfaces of the handle for receiving the blade in its folded or storage position. A self-biasing cam lock assembly having components carried on the heel of the blade and the handle maintains the blade in its operative extended, unfolded position or in its folded storage position. The cam lock assembly includes an L-shaped cam member secured to the blade heel having an arcuate surface terminating at one end in a linear surface and a cut-out at its opposite end. Rectilinear slide members are carried on the handle having a spring bias yieldably urging the pin and slide member into engagement with either the cut-out or the linear surface respectively to maintain the blade in either of its two positions.

Abstract: A folding knife includes a lubricated barrel pivot removably mounted in the handle. An oil reservoir within the barrel communicates with the bearing surface by means of an oil wick in a bore. The barrel may be mounted in the handle by engaging male threads at one end of the barrel into female threads in the knife handle in which case an oil conduit is provided within the male threads for filling the oil chamber. Similarly, the barrel may be mounted with a pair of screws engaged with female threads at opposite ends of the barrel in which case an oil conduit is provided within at least one of the female threads for filling the oil chamber. Further, the barrel may be mounted by providing a slotted head at one of the barrel and female threads at the other end. A screw is mounted through the handle to engage the female threads and an oil conduit is provided within the female threads for filling the chamber with oil.

Abstract: A combination knife and tool set device having a handle member in which a blade and tool members are pivotally connected. A swinging lock lever is provided for locking the blade in an extended position through entry of the locking member into the blade cavity and abutment thereof against the end of the blade. Retraction of the blade is enabled by one-handed operation of both the locking lever and the blade. Tool members are provided in a tool member cavity at the other end of the handle and may be pivoted outwardly and locked in a variety of extensions and locked in place by a threaded locking set.

Abstract: A locking knife and sheath combination having a knife of unitary construction. A flexible engagement tab is provided on the handle of the knife for engaging with a tab receiving opening provided in a front portion of the sheath. Upon engagement of the tab with such opening, the knife is securely retained in the sheath. Removal of the knife from the sheath is accomplished by depression of the tab through the tab opening of the sheath. Sheath clamping means are also provided on the opposite side of the sheath and include a clamping arm which pivots with respect to the rearward surface of the sheath through means of rotation of a thumbwheel adjustment member. Rotation of the adjustment member allows for the clamping arm to selectively clamp the sheath to an article. A clamping device is provided for a folding knife having a thumbwheel adjustment member.

Abstract: A multi-purpose tool for cutting, prying and punching in the event of an emergency situation comprising a handle having a pair of similarly shaped handle halves each with a plurality of end apertures and a center aperture extending therethrough in axial alignment for being coupled together for operation and use; a first part formed as a blade having a cutting end and a support end; a second part formed as a punch having a housing end and a support end; a plurality of spacers between the housing halves and the adjacent parts and between the adjacent parts with apertures at ends and center for coupling the housing halves and the parts and the spacers; and a plurality of fasteners extending through the apertures of the housing halves to couple together the housing halves, spacers and parts for movement between interior inoperative positions and exterior operative positions.

Abstract: A folding knife has a generally elongate blade having a tang portion formed with an integral normally unstressed cantilever spring. A cam pin is provided within the blade receiving space within the handle which is disposed along a curvilinear path defined by a locus of points traveled by a free end of the spring as the blade pivots from the closed to the open positions. The cam pin serves to engage and obstruct the free end of the spring between a first point on the curvilinear path when the blade approaches the open position and a second point on that path when the blade reaches the fully open position. The spring, while obstructed is deflected by the cam pin toward the blade into a gap defined by an end edge of the blade and the spring. Such deflection enables the spring to move past the cam pin.

Abstract: A foldable hand tool, such as a pocket folding knife, includes a knife blade and a handle for storing the knife blade, and a pivotally biased lock bar to secure the blade in extended position. The knife also includes a pair of non-slip ridges mechanically interlocked with the handle in a region of the handle proximate to the blade when the blade is in stored position. The ridges, which project outwardly from the handle, are contoured to permit suitable engagement by the fingertips of a user's hand, thereby reducing slippage when the blade is extended from the stored position. The handle is formed of two keyed sections firmly assembled together by cooperation of a lock bar biasing spring with coaxially aligned holes formed in the keyed regions of the handle sections.

Abstract: A support clip or sheath is detachably mounted on a knife. The clip or sheath has a locking portion insertable into a cavity of the knife, and a release button is operable for releasing the clip or sheath therefrom. A plurality of mounting apertures on the clip or sheath is attachable to various objects, such as a keyring or a strap. The knife and/or the objects are separately handled upon detachment of the clip or sheath. The knife is suspendable by the clip or sheath from a carrier such as a belt or strap.

Abstract: A lock blade knife having a handle portion and a blade, the handle portion having a pair of spaced side plates which enclose the blade between them together with a spring which is urged towards the blade. One end of the spring is provided with a pawl which is received in a notch at one end of the knife blade when the blade is in the open position. When the pawl of the spring engages the notch of the blade, the latter is locked in open position. One plate is provided with a T-shaped slot consisting of a vertical oval slot and a transverse intersecting slot. A lever consisting of a button attached to a piece of spring steel which is bent at right angles is received in the T-shaped slot. The spring steel includes a vertical portion which connects at right angles to a horizontal portion, the horizontal portion having a pair of horizontally extending arms which bear against the edge of the horizontal slot.

Abstract: A knife is provided having a blade, foldably supported by a handle, and a hook for fastening the knife onto another object apart from the knife. A pair of brackets are integrally and flexibly formed with the handle to pivotably attach the base of the hook to the handle. The brackets are given flexibility as a result of being resin-molded integrally with the handle. The hook has a base which is directly attached to the brackets, and a body which is hooked onto an object. Both brackets have a pair of bearing holes lying on the same axis. The base of the hook also has a pair of support shafts which are rotatably fit into both the bearing holes. The hook can then be pivotably attached to both brackets by fitting both support shafts into both bearing holes.

Abstract: A knife having angularly adjustable cutting positions is provided, comprising a blade having a base portion, the base portion having an outer edge including an engagement portion including a positioning mechanism for positioning the blade in multiple angular cutting positions with reference to a handle; a handle including a biased locking member for selectively engaging the positioning mechanism and fixing the blade in each of the angular cutting positions, the handle having a blade end; a spring, positioned in the handle, for biasing the locking member against the positioning mechanism; and wherein the base portion of the blade is pivotally attached to the blade end of the handle at a pivot point located within the blade end.

Abstract: A folding knife having an elongated, unitary blade carrier which is received within a blade carrier cavity of a unitary molded handle. The metal construction of the blade carrier provides a rigid, hidden frame structure for strengthening the knife. The combination of the unitary handle and unitary blade carrier allow for simplified construction. Covers are also provided in the handle for concealing a blade pivot pin.

Abstract: A folding knife holder and method, whereby a folding knife can be safely carried in an elongate knife holder, comprising a housing member that has an elongate recess defined by a base surface, side surfaces and end surfaces, and sized and shaped to receive the knife in an orientation that is substantially parallel to the base surface, with the spine of the knife laying against the base. The margin of the walls of the housing member define an elongate orifice opening into the recess. The orifice is partially occluded at one end by a strike member. The strike member has a gap, wider than the knife blade. When the back of the knife blade is grasped and pulled in an outward direction, the knife blade will pass through the gap in the strike member and the strike member will blockingly engage the butt of the knife handle, thereby allowing the knife blade to be pivotably rotated into an open position.

Abstract: A one-handed knife system in which a knife having a blade instantly deployed by pulling on the heel section thereof includes a separable tether which separates under a force greater than the force required to deploy the blade.

Abstract: A knife having angularly adjustable cutting positions is provided, comprising a blade having a base portion, the base portion having an outer edge including an engagement portion including a positioning mechanism for positioning the blade in multiple angular cutting positions with reference to a handle; a handle including a biased locking member for selectively engaging the positioning mechanism and fixing the blade in each of the angular cutting positions, the handle having a blade end; a spring, positioned in the handle, for biasing the locking member against the positioning mechanism; and wherein the base portion of the blade is pivotally attached to the blade end of the handle at a pivot point located within the blade end.

Abstract: A parting tool for parting seams and/or cutting threads or the like is disclosed. The parting tool may include an arc-shaped blade located between two tines of unequal length to effect a cut. The long tine may have a thorn-like point and the short tine may have a spherical thickening above the blade. The tines pass over into a shaft, which is fastened to one end of a shaft holder or mounting. The shaft mounting may include at its other end a pressure surface oriented perpendicularly to the blade and a rotation axle located at a defined distance in front of the pressure surface and oriented perpendicularly to the blade. The rotation axle may be rotatably supported in the lateral surfaces of a casing open within the rotation range of the shaft holder. A stop is provided within the casing for the shaft of the parting tool in the swivelled in, rest position. The stop may be a spring elastic element.

Abstract: A folding knife having a blade that can be pivoted into or out of a hollow knife handle. A depressible lock pin extends parallel to the blade pivot axis to normally extend through a notch in an arcuate edge of the blade, thereby holding the blade in a designated position (open or closed). Depression of the lock pin enables a transverse slot in the pin to register with the blade, such that the blade can be swung to a desired position.

Abstract: Folding knife apparatus includes a blade having a tang secured to a case or housing. Wedging action between the tang and the case locks the blade open and closed. The tang includes a longitudinally extending slot, and the case or housing includes a pin extending through the longitudinally extending slot. A spring is disposed in the slot and biases the blade against the pin to help lock the blade in place, particularly in the open, use position. Axial movement of the blade is required to unlock the blade from its open position in order to pivot the blade. A cam relationship exists between a portion of the tang and a portion of the case or housing to urge the blade to the closed position.

Abstract: A double-bladed combat weapon includes a handle having slotted ends. A knife blade having a semicircular tang, which has a plurality of index notches, is pivotally disposed in each slotted end of the handle. An indexing mechanism is disposed in each end of the handle and engages one the index notches of the blade tang. A release for each blade is provided to permit the user to swing the blades selectively from a rearwardly directed position to a forwardly directed position, as well as intermediate positions during combat.

Abstract: An improved forceps device (10) is described. The forceps device includes a handle (11) formed of spaced apart plates (14) and (15) joined by bridge member (16) to form a pocket (17). Spaced apart arms (12) and (13) form the distal end of the handle and terminate at inwardly facing pointed ends (12a) and (13a) that are used to pull the sides of a surgical incision together so that the surgeon can close the incision with sutures. The handle provides for a holder (18) and a knife blade (19) that fold out of the pocket when the surgeon presses his or her thumb against a serrated protrusion (18c) that protrudes from the proximal end of the handle.

Abstract: A very small, smooth, hand-held pocket tool which opens like a pocket knife to expose a cleaning element, such as a short piece of hacksaw blade, which can be used to clean the grooves and faces of golf clubs and can also be used to roughen the grips of such clubs. The essence of the tool is that it is so small that golfers would not hesitate to carry it in their pocket during a round of golf, yet when open the part that shields the cleaning element acts as a handle making the tool quite large enough to be effective. The cleaning element can easily be replaced when dull.

Abstract: A knife having a foldable blade includes a locking bar which holds the blade in an open position. A release lever is provided on the side of the handle for releasing the locking bar and allowing the blade to be moved to a closed position. The release lever has a laterally exposed portion which is flush with the outer surface of a bolster of the knife and a projection which extends into the recess which receives the blade when the knife is closed. The projection engages the bottom surface of the locking bar and urges it upward when the laterally exposed portion is depressed.

Abstract: In a folding knife or tool having a handle and a blade pivotally connected to the handle, a control plate 28 slides in a shaped cavity 52 between handle plates 46,68, and swings, and also swings on, a crankpin 24 attached to the blade tang, and embodies a cam surface 36 at the distal end. A stem portion 30 of the control plate 28 protrudes to the surface of the handle whereby it may be manipulated by the user to cause the blade to open or close, and then to cause the cam surface 36 to engage a ramp 62 and spur 60 to thereby interpose a mechanical block to reverse blade rotation. Further pressure upon the stem 30 will then remove running clearances, tightening the blade solidly against wobble, and the control plate 28 against dislodgement.

Abstract: A butterfly knife scabbard including a housing incorporating an aperture sized to engage the locking latch of the knife handle to release the knife from the chambered position for facilitating actuation of thereof and method for its use.

Abstract: A foldable pocket saw has a handle with a mounting head extending from one end thereof. A blade mounting member is rotatably disposed on the mounting head with a saw blade removably attached thereto. A detent mechanism has a spring loaded pawl actuated by a button radially movable into and out of engagement with one of a plurality of circumferentially spaced, radially extending notches provided in the periphery of the rotatable blade mounting member for releasably locking the saw blade in any one of a plurality of positions relative to the handle.

Abstract: The modular pocketknife system is assembled from a number of modules. Each of these modules consists at least of a tool element (12, 13) and of at least one connecting element (8, 11). The modules can be ranged side by side in any desired number and sequence, the connecting elements being provided with an electronic contact element (1) for data transmission, a locking element (2, 4, 5), and a sealing element, so that the modules are fashioned splash-proofly mechanically and electronically interconnectible and lockable and detachable from one another again.

Abstract: A folding knife apparatus has an elongated handle with a slot formed therein. A knife blade has a working edge and an edge opposite to the working edge also has an abutment portion on one end of the opposite edge. The blade has a storage position wherein the working edge is disposed in the slot and a working position thereof approximately 180 degrees from the storage position thereof wherein the working edge extends out of the slot. The knife blade is pivotally attached to the handle along a first axis for permitting movement of the blade between the storage and working positions thereof. A lock member is rotatably attached to the handle along a second axis and has a locked position and an unlocked position. The lock member is in engagement with the abutment portion of the opposite edge of the blade when the blade is in the working position and the lock member is in the locked position thereof. The lock member is spaced from the blade abutment portion when the lock member is in the unlocked position thereof.

Abstract: The frame of a personal, folding knife forms a compartment for receiving a knife blade having a hub pivoted to turn on the frame about an axis spanning the compartment. A locking block is manually slidable on the frame. A spring urges the lock block toward engagement in a notch in the blade hub.

Abstract: The modular pocketknife system is assembled from a number of modules. Each of these modules consists at least of a tool element (12, 13) and of at least one connecting element (8, 11). The modules can be ranged side by side in any desired number and sequence, the connecting elements being provided with an electronic contact element (1) for data transmission, a locking element (2, 4, 5), and a sealing element, so that the modules are fashioned splash-proofly mechanically and electronically interconnectible and lockable and detachable from one another again.

Abstract: An emergency seat belt cutter for mounting in the passenger compartment of a vehicle. The cutter has a handle, a long and narrow blade mounted longitudinally in a blade support portion integral with the handle and lugs on the handle for engagement with a sheath. The sheath has a cylindrical interior with a mounting for the inside of the vehicle, a coil spring in the bottom of the cylindrical interior and bayonet connectors for engagement with the lugs. The cutter is inserted into the sheath with pressure and a counterclockwise rotation. The cutter is removed by again applying transverse pressure and turning in a clockwise direction wherein the coil spring expels the knife into a person's palm.

Abstract: The present invention is a hidden belt weapon which, by means of a simple twisting motion on the part of its wearer, detaches from a belt and simultaneously deploys to a "throwing-star" or "Ninja star" configuration. The operative belt-fastening means (the buckle proper) need not detach with the weapon. More particularly, the hidden belt weapon comprises a backing within which is mounted a central rotating member. A plurality of knife blades are rotatably attached to the periphery of the central rotating member by means of a plurality of blade deployment pins. When the central rotating member and the knife blades are in their collapsed configuration, the member and blades are concealed by the cover. Concealment of the blades by the cover enables the user to carry the weapon in a highly-accessible position on the body, such as over the belt buckle, without detection of the weapon.

Abstract: A knife having a plurality of blades or other implements foldable about a common pivot axis at one end of the handle. A separate lock lever is associated with each blade or implement and has an end portion engaging a notch in the blade adjacent the pivot point to prevent movement of the blade away from the open position until the lock is manually released. The lock levers are pivotally mounted at an intermediate position and urged toward engagement of the one end portion with the blade notch by respective beam springs contacting the lock levers on the opposite sides of the pivotal mountings. The locks are released by pressing upon portions of the lock levers arranged in transverse grooves which are longitudinally offset along the back of the knife at the end opposite the end at which the blades are pivotally mounted.

Abstract: A tool which functions as a blade pick and well cleaner to be used with "pocket" knives. The blade pick and well cleaner, made of a strong, slightly malleable material, preferably stainless steel, has ends that may be inserted in the notch of knife blades and attachments to assist in their opening when fingers and fingernails are ineffective or inadequate for this purpose. The bottom end of the blade pick also serves as a cleaner to remove the material adhering therein, including that material which made opening the blade or attachment difficult. In the preferred embodiment, the blade pick and well cleaner replaces the toothpick or tweezers that are found in handle slots or receptacles of a specific type of knife known as a "Swiss Army Knife". The tool may also be composed of any one of several permanent magnet materials having sufficient strength, hardness and corrosive assistance properties to serve the purposes of the tool.

Abstract: A game hunter's knife has a folding blade unit movable to an enviscerating cut or alternatively a skinning position. The knife includes an elongated blade pivoted in one end of a handle having a through slot for moving the blade to the opposite sides. An enviscerating guard is pivoted to one side of the handle and is pivoted 90.degree. with the blade abutting the guard to form a hook for convenient cutting of the animal hide by a pulling action. The guard separates the entrails and meat from the skin during cutting. The blade is pivoted to the opposite side of the handle for skinned with the guard abutting the handle. The guard includes a small opposite projection extending the pivot to form a stop for the blade extending longitudinally outwardly of the handle in position for skinning.

Abstract: A folding knife incorporating a pair of recesses inwardly of its oppositely facing handles, to receive a resilient clip assembly enabling the knife to be secured to one's belt or pockets for easy, left-hand or right-hand carrying about.

Abstract: A folding camp knife (10) comprises an elongated handle case (12) having sideplates (24a and b) separated by a blade gap (26) in which a blade (14) is mounted for rotation by means of an axle pin (16) passing through holes (30 and 54) in the sideplates and the blade. A locking piece (18) engages the axle pin on the outside of the handle case and can both rotate about and slide longitudinally along the axle pin. The locking piece includes a locking flag (68) which can be moved into handle and blade peripheral locking slots (38a and b and 52) when they are in registration. Once the locking flag is slid into these peripheral locking slots the axle pin can be tightened against the locking piece to prevent further movement of the locking piece, thereby preventing rotational movement between the blade and the handle case. The axle end of the blade has a plurality of locking slots (52a-e) extending thereabout which allow the blade to be placed at various angles.

Abstract: A folding knife having a blade, a first scale and a second scale on either side of the blade with a tumbler or back spring positioned to hold the blade in its operative position having the features of pivotal mounting of the second scale and hand-force latching means of the second scale whereby the second scale can be readily pivotally moved away from the first scale for cleaning.

Abstract: A tree saw uses a flexible sapling or tree limb as a handle extension to permit a person to cut tree branches beyond his normal reach. The tree saw comprises a foldable saw having a pair of swingable rings mounted to the back of the saw handle. A fulcrum is secured to the handle back surface intermediate the rings. The limb is inserted through the rings and over the fulcrum. The limb is bent into a concave shape. One of the rings is swung along the limb as far as possible. When the limb is released, its natural elasticity tends to straighten it and thereby force it into tight and rigid connection with the rings and fulcrum.

Abstract: A locking knife apparatus that includes a handle unit, a blade member support unit, a blade member, and a blade pivot hole and lock unit. The blade member includes a pivot slot disposed therethrough for operable interaction with the blade pivot hole and lock unit. Both the blade member and the blade member support unit include tabs and notches that may interact with one another to assist in locking the blade member in an open position.

Abstract: A surgical instrument with a handpiece body adapted for manual manipulation, a hollow tube extending outward therefrom, and a rotating blade extending through the tube and out of the end thereof. The axis of rotation of the blade is displaced radially from the tube axis so that, when the blade is rotated 180.degree. from the direction of displacement, the sharp, hooked end is within the region of extension of the tube and the patient is protected against inadvertent cutting of Descemet's Membrane or the iris.

Abstract: A folding knife comprising a handle and a knife blade rotatable about a pivot. The invention is characterized by the combination that the handle (2) consists of only one wood piece, which is sawn open along a central longitudinal plane, so that a longitudinal gap (5) is formed along the greater part, but not along the entire length of the handle (2), that the blade pivot is located at the end (7) of the handle (2) where the gap (5) opens and is attached in the wood portions of the handle (2) located on opposite sides of the gap, and that a retaining mechanism known per se capable to retain the knife blade (4) in folded-out position and in a spring-loaded manner to retain the knife blade in folded-in position is provided. The retaining mechanism comprises a retaining arm (12) and a spring (13) acting against the same, which are mounted in the longitudinal gap (5) and have a thickness corresponding to the width of the gap (5).

Abstract: A knife comprises three main parts: a handle, a blade and a removable spring lock guard. The handle, formed of two spaced apart lateral handle halves includes a blade pivot adjacent its forward end. The blade, configured as a double-ended, double-edged single blade, is mounted intermediate its ends to the blade pivot for rotation to positions in which one of its ends is contained within a slot provided between the handle halves while its opposite end extends forwardly of the handle for use. A spring lock guard is configured to releasably overlie the slot in the handle and confine the inoperative blade, thereby securely locking the single blade against inadvertent rotation during use.

Abstract: A folding knife has a U-shaped body between the ends of the legs of which a blade is mounted for pivotal movement about an axis, beween open and closed positions. One leg is shorter than the other leg, and that one leg has a laterally extending protuberant portion having a hole centrally therethrough and bevellings on opposite sides of the hole. On that same side of the blade, the blade has two projections spaced equal distances from and on opposite sides of the pivotal axis of the blade, that distance being the same as the distance between the hole and the pivotal axis. As a result, the projections on the blade slide up the bevellings with a cam action upon approaching the open or closed position and snap into the hole. The sides of the projections are inclined, so that there is a cam action by which they can snap out of the hole when moving from one position toward the other position.

Abstract: A folding knife comprising a handle transversely flanking a knife blade movable within a slot formed through the handle. A complementary fixed bushing and pivot hole on the handle and knife blade provide a positive lock for the extended knife blade, in conjunction with a spring-biased ball that is located within the bushing and which bears radially outward against the surfaces of the pivot hole. The knife blade is manually releasable from its extended position by application of manual pressure to the blade in a direction perpendicular to bushing axis. The spring-biased ball also acts in cooperation with a notch in the pivot hole to serve as a releasable detent for maintaining the knife blade in its folded position.

Abstract: A pocketknife is formed with a latching mechanism that includes a catch and latch for releasibly holding a key ring.

Abstract: A knife which has generally a blade and a handle wherein the blade folds into the handle; and wherein the handle has a first parallel plate and a second parallel plate which are secured to each other and spaced from each other by a spacer bushing and a fixed bushing to form therein a pocket into which the blade folds as it rotates around the fixed bushing. The fixed bushing has therein a slide hole into which the stem of a lock inserts. A biasing spring is installed in a bore in the stem and bears against a shoulder inside the stem and against a spring plate affixed to the outside of the first parallel plate, thereby biasing the stem and the lock through the second parallel plate. A button on the outside of the second parallel plate passes through a button hole therein, and the button is affixed to the end of the stem. The lock has a lock pin which protrudes through the first parallel plate and engages one of a plurality of lock pin holes in the blade securing the blade in the desired position.

Abstract: A belt buckle knife is disclosed in which a knife portion can be removed with the knife blade locked in its open position without the need of removing the belt buckle knife from the belt. The belt buckle knife includes a buckle portion which engages and fastens the belt independent of the knife portion. The knife portion is selectively operable from a knife closed position to a knife open position. In the knife closed position, the knife blade is engaged by an open tapered groove running along the length of the buckle portion, with the knife portion and the buckle portion being securely fastened together. In the knife open position, the knife blade is locked open with respect to the knife handle, and the knife portion can readily be removed from the buckle portion.