Abstract: A utility knife includes a holder having two mating halves which combine to develop a first cavity located at a proximal end of the holder, for receiving a blade for active use, and a second cavity located toward a distal end of the holder, for receiving a supply of replacement blades. The two mating halves are joined by a hinge located at the distal end of the holder, and a closure in the form of a captive screw extending between the mating halves at a position between the first cavity and the second cavity. Both the first cavity and the second cavity incorporate a magnet for directly engaging the active blade, and for additionally engaging one or more stored replacement blades.

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about the cutting edge and is slidable in the nosepiece to extend outwardly to sheathe the cutting edge and to be withdrawn into the nosepiece to expose the cutting edge.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: The invention provides a razor having a retaining mechanism adapted to receive a blade longer than the mechanism for retaining the blade so that one or both wings of the blade extend past the retaining mechanism to provide a small straight razor. Additionally, the blade is positionable within the retaining mechanism so that its wing can be extended from one or the other side of the retaining mechanism. The retaining mechanism for the blade has a pivotably-attached handle to allow ergonomic adjustment of the shaving angle. The blade and retaining mechanism have associated mechanisms for retaining and aligning the blade in the retaining mechanism.

Abstract: A utility knife having replaceable blades is provided having a handle with an exterior surface and an interior. A slide member is slidingly mounted in the interior of the handle. A blade is removably mounted to the slide member such that, in a first position, the blade is contained completely within the handle and, in a second position, the blade extends partially out of the handle. A shell is hinged to the handle at the exterior surface. The shell includes a central cavity shaped to receive replacement blades. Further, a utility knife having replaceable blades is provided having a handle with a first casing and a second casing. A hinge member is mounted to the first bottom edge and the second bottom edge such that the first casing can be rotated with respect to the second casing from a closed position to an open position. A slide beam is slidingly mounted on the first casing. A blade is removably attached to the front end of the slide beam.

Abstract: A hand-held utility knife (20) has two handle portions (22, 23) hinged together at the rear end (26) of the handle (21) by means of two lugs (36, 37) of one handle portion (22) projecting into two recesses or cavities (38, 39) of the other handle portion (23) and retained therein behind two lips (53a, 53b) except when almost closed together, when the two handle portions (22, 23) can be separated and reconnected. In order to prevent inadvertent separation of the two handle portions (22, 23) at their rear ends (24, 25) when the handle is closed and the clamping device (27) is screwed up tight, the lugs (36, 37) have abutment portions (61, 62) which engage abutments (65, 66) inside the two recesses or cavities (38, 39). The abutments (61, 62, 65, 66) are positioned on one side of the hinging axis (34) so that they move apart when the handle (21) is opened. Hence the abutments (61, 62, 65, 66) do not interfere with the hinging of the handle portions (22, 23) nor with their separation and reconnection.

Abstract: A plier-type hand tool having a first member comprising a pair of components formed of sheet material mounted in fixed spaced relation, and a second member formed of sheet material and pivotally mounted between the components of the first member, each of the members having a jaw portion and a handle portion, and a third member pivotally mounted between the components of the first member, wherein the third member includes a recess for receiving a cutting blade, a pin for retaining the cutting blade, and a stud projecting from the third member, and wherein the second member is formed with a recess mating with the stud, such that when the second member is pivoted to an open position, access is afforded to the recess for receiving the cutting blade and the pin for retaining the cutting blade to facilitate replacement of the cutting blade.

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: In a reciprocating cutter type trimmer in which blades (14, 15) are reciprocative, the blades (14, 15) are each constructed of a power transmission member (19,18) and an edge member (17, 16) and constitute a separation type blade in which the blades are individually removable, upper and lower blade guide plates (20, 21) are provided for supporting the blades (14, 15) from above and below, and at least one of the upper and lower blade guide plates (20, 21) is rotatably pivoted on the case (4). Exchange of the blade can be carried out easily and rapidly, loss of parts during blade exchanging work can be prevented and the construction can be simplified.

Abstract: An apparatus for endoscopic surgical treatment of carpal tunnel syndrome, heel spur syndrome, or other conditions requiring fibrous tissue division and a method for endoscopic treatment of carpal tunnel syndrome are disclosed which include a slotted cannula, an obturator for guiding the cannula into a body opening, an elevator, a retractor, and a hooked surgical knife. The elevator and retractor are used in separating tissue at a surgical opening into the wrist, hand, foot or other location and the obturator and cannula are inserted into the opening for endoscopic division of the carpal ligament, plantar fascia or other tissue. The obturator is removed and a videoarthroscope is inserted in the one end of the cannula while the knife is inserted in the other end to permit direct observation of the procedure as the ligament is divided in one step. The instruments are very small and leave only small openings which reduce the trauma and facilitate early recovery from the surgical procedure.

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 blade-carrier tool of the type forming a handle for holding in the hand, and provided at its front end with a removable blade which is held in position by a clamping mechanism including two jaws between which the blade may be engaged. The jaws of the clamping mechanism are connected to respective levers serving to control the clamping mechanism. The levers are suitable for occupying an open first position in which the jaws are moved apart from each other, and a closed second position which is spontaneously locked under the action of declutchable locking means, in which position the jaws bear against respective opposite sides of the blade and hold it securely in position.

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 knife consisting of blade, ferrule and shank, in which shank and blade are welded to opposite flat surfaces of the ferrule and consist of steel, and, in order to obtain a considerably simplified manufacture with the same utilitarian value, a sinter-steel ferrule is provided in connection with which the material of shank and ferrule have approximately the same hardness, which hardness is less than that of the material of the blade.

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: This invention relates to utility knives used to cut various items, including cartons, cardboard, string and wallpaper. Specifically, the invention provides a disposable one-piece razor blade utility knife in which the blade is adjustable yet permanently affixed to the knife handle. When the complementary shells of the handle are open, the blade may be placed in a usable position in which the cutting edge will protrude out of the handle when the shells of the knife are later closed or in a safety position in which the blade will be fully retained in the handle when the knife is closed.

Abstract: A conventional cutter is disclosed. It features a plate to secure the blade. There is also a blade magazine of relative conventional design.

Abstract: The straight razor has a handle portion and a pivotable blade holder with a razor blade permanently and rigidly attached to the handle portion. The handle portion and the blade holder are made of economical easily used materials so that the straight razor is at least partially disposable. In one embodiment the blade holder is pivotally permanently mounted on a connecting pin joining two opposing parallel handle panels of the handle and the entire straight razor is disposable, while in another embodiment the shank portion of the blade holder has a recess in which the connecting pin is engagable so that only the blade holder and razor blade are disposable.

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: A cleaning apparatus, particularly for cleaning window panes includes a shaft-like hollow handle and a replaceable approximately strip-shaped cleaning tool mounted between two clamping jaws which are adjustable relative to one another. One of the clamping jaws has an extension by with which it is connected to the handle by means of a hinged bolt. This cleaning apparatus is superior as compared with usual apparatuses in that the extension of the one clamping jaw is pivotably connected to an elongation of the handle and comprises at its broad side facing away from the elongation an arcuately extending, relatively coarse toothing which is in cooperation in a manner known per se with a spring-loaded stop lever guided in the handle and formed as a slide.

Abstract: A utility knife having a handle with a shaft portion and a lower protrusion for improved ergonomics is disclosed. The shaft portion has a bore for receiving a collet and the knife includes a central knob for cooperating with the collet to clamp a blade into the collet when the knob is rotated in a first direction and to move the collet axially out from the handle, thereby freeing the blade, when the knob is rotated in the other direction.

Abstract: A scraper may be composed of a front portion, including a guard portion, hingeably connected to a handle portion. The handle portion includes a blade portion for receiving and retaining a cutting blade. The front portion is scored to allow the guard portion to fold against the top face of the handle portion, thereby substantially enclosing the blade and acting to provide protection for various objects and personnel from inadvertent contact with the sharp cutting blade when the scraper is not in use. When use of the scraper is desired, the front portion is folded against the bottom face of the handle portion thereby exposing the cutting edge of the blade.

Abstract: A holder for a detachable blade has a handle part and a blade retaining part formed by a pair of body sections pivotally connected for movement between open and closed positions. A latch member supported within the hollow handle part, and which retains the body sections in closed position, is released by manually operating an associated push button disposed in an aperture in the handle part. Coengageable clamping surfaces on the blade retaining part cooperate in clamping engagement to retain a blade in the holder when the holder is closed. A thumb rest on the blade retaining part reduces risk of accidental contact with a blade secured in the holder.

Abstract: A holder of improved construction for mounting a saber saw blade on a drive means for reciprocation. The holder includes means defining a slot for receiving the blade, and means coupled with the support means for retaining the blade in the slot and for preventing movement of the blade relative to the support when the support and blade are reciprocating under the influence of the drive means. The holding means in several embodiments includes cam members which are received in notches in respective blades. Other embodiments relate to the formation of blade-receiving slots by moving wall means into proximity with recesses in side faces of elongated members.

Abstract: An improved tool head for releasably retaining a blade includes a body and a clamping member pivotally hinged together for relative movement therebetween by rotation of a threaded operating member. The operating member is rotatable to axially move the same into threaded engagement with the body and clamping member and, at a final point in its axial translation, contacts a camming structure on the clamping member. Engagement of the operating member with the camming structure applies a laterally directed force to the clamping member, pivoting the same about its hinged connection to the body and carrying a pair of blade receiving lips on the body and clamping member into relative blade-retaining proximity to firmly secure a blade between the lips.

Abstract: A blade tensioning device for a hacksaw or the like. A generally conventional hacksaw is provided with a plate in one leg of the frame, and the blade receiving pin is on the plate. A toggle joint is arranged to rotate the plate to move the pin and loosen the saw blade or to rotate the plate to move the pin and tension the blade. When the blade is tensioned, the toggle joint locks to hold the blade in tension. The frame has a bezel to fit over the end of the blade when the blade is in tension to prevent lateral movement of the blade. The opposite frame member may include an adjustable link to adjust for saw blade length or slight frame bending.

Abstract: A utility knife comprises a pair of complementary opposing elongated body sections. The body sections are pivotally connected intermediate handle and blade retaining portions. The body sections interlock by a tongue/slot engagement. A releasable locking means in the handle portion employs a button slidable in transverse openings.

Abstract: A knife including a detachable blade which is readily released from the knife handle with a locking mechanism including a spring biased pivotally mounted locking plate formed with a locking tab mating with a recess in a knife blade tang.To assemble the blade to the handle the tang is inserted into a knife handle socket and the locking plate tab moved into locking engagement with the tang. Depression of the locking plate rearend enables quick release for replacement or removal of the knife blade. A series of angled shoulders formed on the knife blade and the tang cooperate with corresponding angled surfaces on the handle components provide great rigidity of the blade in the handle.

Abstract: Apparatus for cutting a sheet of material which includes a base member having a generally planar top surface and a body member having a generally planar bottom surface. The body member has a first slot extending from the bottom surface. A spacer separates the top surface of the base member and the bottom surface of the body member. A bifurcated retainer has first and second generally parallel generally coplanar arms which are disposed respectively in first and second planes passing on first and second sides of the first slot. In some forms of the invention the apparatus includes a cover element and a pivotal mounting for the cover element on the body member. The cover element may have a notch therein for receiving a corner of an associated cutting edge. The pivotal mounting may include a spring bias for urging the cover element toward the body member. The bifurcated retainer may be manufactured of spring steel.

Abstract: A hair trimming device for moustaches and eyebrows which has a replaceable blade. The blade is held between a pair of plates. The blade is curved to provide a perfect cut, and the plates are likewise curved. The plates are hinged and can be quickly swung from open to close position and simple means are provided for locking the blades in position. In one form, a handle receives a flexible connector which is fastened to the blade supporting plate. The flexible connector can be moved along the handle to a position in which the plates are taughtly held against the handle and the blade is securely positioned between the plates. When moved in the opposite direction, the flexible member can be flexed to permit opening of the plates and replacement of the blade.

Abstract: A holder for detachable, apertured blades has two body sections connected intermediate the ends thereof for pivotal movement between open and closed positions. A blade received within a recess at one end of one of the body sections, when the holder is in open position, is retained on a projection which extends through and beyond the recess at the one end. A latching member mounted in fixed position on the other of the sections cooperates with the projection to interlock the blade in the holder when the body sections are pivoted to closed position. A detent at the free end of the handle portion of the holder releasably retains the two body sections in closed position.

Abstract: Improved haircutters which utilize a razor-like blade, said haircutters including a blade holder having a base blade support and a clamp member. The clamp member is positionable on a supported blade and includes a clamping lever which is engageable with a clamping pin-like member which may be projecting from said base blade support. In a preferred embodiment, the blade can be laterally adjusted to a series of hair cutting positions.

Abstract: Blade support unit, for receiving a replaceable blade, includes a blade receiving slot defined by a rigid base member and a second flexible member, the members having blade engaging surfaces and being maintained with fixed separation equal to the blade thickness along a first edge of the slot. A clamping member passes through extensions of the members beyond the slot boundaries, and an elongated tightening lever engages the clamping member so that force applied to the lever is transferred through the clamping member to clamp the blade between the two members.