Abstract: A knife is provided having both a multi-blade configuration for cutting multiple slices simultaneously as well as a single blade configuration for storage and single cuts. In some embodiments, the multiple blade configuration may be adjustable to define varying distances between the multiple blades.

Abstract: The invention relates to a hand instrument for manual use in dental care, which includes a substantially elongated handle (2), to at least one end of which is arranged a construction for detachably connecting a head part (3) extending substantially from the central axis of the handle (2) and possibly including at least one bending. The construction by which the handle (2) and the head part (3) is arranged detachably connected includes a tightening element (4) axially positioning itself between the handle (2) and the head part (3).

Abstract: The present invention provides a system for separating empty or used ammunition cartridges, in particular spent plastic shotgun shells, in order to allow the plastic and metal component parts of the cartridge to be recycled, the system comprising a restraint which defines a guideway within which the metal head of the cartridge may be slidingly engaged, and a clamp in the form of a pair of chains arranged to define a clamping path between opposed portions of the chains and along which clamping path the case may be drawn, the guideway diverging from the clamping path so as to draw the case out of register with the head as the cart ridge is displace along the clamping path.

Abstract: A dental drill head, constituted of a head housing, a wind wheel, and bearings, the head housing being constituted of a head housing cover and a head housing cavity, and the wind wheel being constituted of a wind wheel shaft and wind wheel blades. An anti-suck-back device is configured between the head housing cover and a wind wheel shaft end part to which the wind wheel shaft corresponds. The present invention, which adopts the aforementioned technical scheme, firstly makes it possible to reduce the intake in of contaminants when suck-back is taking place as the impeller is braked; and secondly, while there is still a positive pressure inside the head, the rubber head covering uses elastic force to brake the impeller and completely prevents the intake of contaminants. Moreover, the structure is simple and costs are low. Since the pressing area is reduced and the cavity is arranged between the rubber layers and the head covering, the teeth are less susceptible to touching the pressing portion.

Abstract: A dismantling system (5) for separating ammunition cartridges (10) comprising a casing (12), a bullet (11) and powder among its components, the system being characterized in that it comprises an extraction head (53) for extracting the bullet (11) from the casing (12), and retaining elements (52) for retaining the casing (12) in an extraction position while extracting the bullet (11). The invention also comprises a disarming system and a method for separating the components of an ammunition cartridge (10).

Abstract: A tool holder includes a collet configured to be clamped to the shank of a tool and a pull-out protection element configured to secure the tool against being pulled out of the collet. The pull-out protection further includes a protection element such that pull-out forces acting on the tool are transmitted to the collet. The protection element is mounted so as to be moveable relative to the collet and has a wedge-shaped configuration as well as force-transmission surface. When the protection element is in a radially inner engaged position with the tool, the protection element is configured to be clamped to the cool and the collet so as to be self locking.

Abstract: A clamping device for a dental tool in a dental turbine handpiece having at least one clamping lever. The clamping lever permits a tool shank to be clamped. The structure allows for more accurate relative positioning and improved concentricity of the dental tool after clamping.

Abstract: A system for sharpening a tool bit in a fixed geometry has a base with a support platform and guide rod attached to and extending from the platform; a fixture including a longitudinal extending body with a plurality of linear bore holes extending through a transverse width of the fixture; and a tool bit support assembly removeably connected to the fixture for receiving the tool bit. In operation, the system provides for a user to insert the guide rod through one of the bore holes in the plurality and to position the tool bit in a fixed orientation for sharpening a free end of the tool bit. By forming the fixture with a specific number of bore holes, each positioned at a precise angle within the fixture, the system provides for the sharpening of the tool bit in a fixed geometry in a way that is consistent, precise, and repeatable.

Abstract: The invention relates to a chuck with a chuck body (2) having a centering hole (3) that is tapered frustoconically and in which is provided a clamping member (4) having a clamping thread (5), with an angle drive (8) having a threaded ring (6) engaged with the clamping thread (5), axially fixed to the chuck body (2), coaxial to the clamping member (4), and rotatable by a drive member (9) that can be rotated about a drive axis that is not parallel to the chuck axis. The drive member (9) can be inserted from the end opposite to the centering hole (3) into a body cavity (10) that can be closed by a plate (11) that is supported on the chuck body (2) and/or the threaded ring (6). The drive member (9) is accessible for a drive tool through an aperture (12) in the cavity wall (13).

Abstract: A clamping assembly for a toolholder includes a toolholder body having an access hole. A locking sleeve is slidably disposed within the access hole and a center collet is disposed within the locking sleeve and is fixedly connected to the toolholder body. The center collet receives a retaining tip of a tool. A spring assembly and a release device cause the locking sleeve to move within the access hole between a load position, where the locking sleeve is disengaged from the center collet such that the center collet is open and a lock position, where the locking sleeve engages the center collet such that the center collet is closed and locks the retaining tip of the tool within the access hole.

Abstract: A failsafe workholding clamping assembly includes a base, an axially slidable draw bar and collet, and a force amplifier. A driver applies a continuous driving force to the force amplifier. The force amplifier amplifies the driving force and applies a resulting amplified force to the draw bar to bias the draw bar toward its closed position and the collet toward its gripping position. A collet opener mounts to the base and selectively applies an opening force to the draw bar to counteract the driving force and move the collet into its released position. The workholding clamping assembly holds a collet in a predetermined rotational orientation and includes a draw bar rotating mechanism to enable an operator to rotate the draw bar to threadingly engage the draw bar and a rotationally-fixed collet.

Abstract: A tool holder includes a drawing screw and a stopper member. The drawing screw is positioned in an intermediate hole. A rear end face of a head of the drawing screw faces a boundary wall surface, and a top end of a shaft of the drawing screw is screwed in a rear end of a collet. The stopper member is positioned in an annular space between an outer peripheral surface of the shaft of the drawing screw and an inner peripheral surface of the intermediate hole. The stopper member faces a front end face of the head of the drawing screw, and limits movement of the head toward a top end of the tool holder. The drawing screw and the stopper member are inserted and assembled from a top end opening of a collet holding hole.

Abstract: A chuck for accommodating a collet chuck, comprising a housing and a chucking tool seat that is assigned to the housing. The chucking tool seat is embedded in the housing as a separate part via an intermediate filling that is made of polymer concrete for connecting the chucking tool seat and the housing. This design has improved properties regarding damping and the total weight while flat sub-areas that are composed of individual guiding plates can additionally be used as clamping areas of the chucking tool seat. Thus a pyramid-type joint is obtained, which could previously be created with the required precision only by using a lot of effort when producing the same from solid material.

Abstract: A rotary encoder is clamped coaxially with its pickup shaft (14) on a drive shaft (12) which is to be measured. Two collet chucks are provided for this purpose. The one collet chuck is constructed as a clamping sleeve, which penetrates the pickup shaft (14) axially and has clamping jaws (34) on its free end. The other collet chuck is constructed as a clamping ring, which engages the pickup shaft (14) with clamping jaws (38). The two collet chucks are clamped axially against each other and against the pickup shaft (14) by a force element (40).

Abstract: A quick action, cam operated hand tool holder, such as a tap wrench. The cam is moveable between at least one released and one locked positions, preferably by a conventional T-handle. A third position may also be provided which may be either a second locked or a second released position. An adjustable nut, or similar, retains a collet within the wrench and adjusts the wrench to different sizes of tools (i.e. taps) and adjusts the gripping force applied when the cam is locked. The collet is preferably reversible, accommodating different tool sizes on each end, but may also be single ended.

Abstract: A micro-adjustable tool chuck comprises a first cylindrical body member (1) adapted for connection to a drive spindle, a second cylindrical body member (2) adapted to receive a tool bit in the end thereof, and moveable axially relative to the first body member (1), and means for drivingly connecting the first body member (1) to the second body member (2). A first screw thread (10) is formed on the outer surface of the first body member (1) and a second screw thread (11) is formed on the outer surface of the second body member (2). The first screw thread (10) is of a greater pitch (coarser) than the second screw thread (11).

Abstract: A clamping sleeve/tensioning device comprises a clamping sleeve that is positioned inside a conical centering opening of a housing body. A chucking mechanism with rotational body is used to tighten or release the clamping sleeve. The rotational body is provided with a central opening, having an internal thread or an external thread, which directly engages in the clamping sleeve. The rotational body preferably is supported via a roller bearing on a corresponding bearing surface of the housing body. The rotational body is driven via a reducing gear, for example via a worm. As a result, high tensioning forces can be generated in connection with the relatively small diameter of the tensioning thread and the small conical angle. The small diameter of the tensioning thread ensures a low thread friction.

Abstract: A clamping sleeve/tensioning device comprises a clamping sleeve that is positioned inside a conical centering opening of a housing body. A chucking mechanism with rotational body is used to tighten or release the clamping sleeve. The rotational body is provided with a central opening, having an internal thread or an external thread, which directly engages in the clamping sleeve. The rotational body preferably is supported via a roller bearing on a corresponding bearing surface of the housing body. The rotational body is driven via a reducing gear, for example via a worm. As a result, high tensioning forces can be generated in connection with the relatively small diameter of the tensioning thread and the small conical angle. The small diameter of the tensioning thread ensures a low thread friction.

Abstract: A tool holder includes a body, a collet, and a collet mover. The body is formed to include a collet chamber and a collet-mover chamber arranged to communicate wit the collet chamber. The collet includes a tool-gripping surface arranged to define a tool-receiving chamber adapted to receive a machine tool therein. The collet is mounted for movement in the collet chamber along a central axis of the body between a tool-grip position to cause the tool-gripping surface to move radially inwardly toward the central axis to grip the machine tool in the tool-receiving chamber and a tool-release position to cause the tool-gripping surface to move radially outwardly away from the central axis to release the machine tool. The collet mover is positioned to lie in the collet-mover chamber and is coupled to the collet to draw the collet along the central axis to the tool-grip position.

Abstract: A tool holder having a holder body, a collet, an intermediate rod, a clamp bolt and a pull stud. The collet and the intermediate rod are integrally connected by screwing. A spacer is mounted to the front end of the holder body and has an opening hole with a diameter nearly matching with the diameter of the shank portion of the cutting tool. In the opening hole, a tapered groove portion with an enlarged diameter portion on the rear and a reduced diameter portion on the front is formed, and in this groove portion, a sealing O-ring is mounted. A cap for holding the spacer is screwed down to the front portion of the holder body, and the cap and the holder body come in pressure-contact at each other's tapered surfaces.

Abstract: A tool holder having a holder body, a collet, an intermediate rod, a clamp bolt and a pull stud. The collet and the intermediate rod are integrally connected by screwing. The collet is retracted into the holder body via the intermediate rod by rotating the clamp bolt in the first direction, and presses and holds a cutting tool. In this event, a head of the clamp bolt comes in pressure-contact with a stepped surface of the holder body by surface friction and rotates. On the other hand, in order to release the cutting tool, the clamp bolt is rotated in the second direction opposite to the first direction. In this event, the clamp bolt is rotated by rolling friction via steel balls inserted between the head and a center hole of the holder body, and the collet is pressed out forward.

Abstract: A clamping collet of the type used in spindle lathes is provided having a stop mechanism to effect accurate positioning of the workpiece. The stop mechanism includes a rod that is reasonably held in position by a locking collet.

Abstract: An apparatus for adjusting the grip of a tubular collet upon work, the collet receivable in a bore formed by a holder, and comprising a rotatable connector member having first and second thread connections to the collet and to the holder, respectively; the thread connections characterized as differential, with respect to the collet and to the holder, whereby as the member is rotated, the collet closes toward the work, with high mechanical advantage.

Abstract: A machine tool to machine a workpiece including linear slide blocks supported one by the other on a pedestal to present a mounting surface for supporting a workpiece, a support head including a rotary indexing table that in turn supports an elongated cutter bar the support head to define an outwardly projecting cantilever end portion that is in turn supported by an outboard support, a cutter tool supported for rotary movement about an axis transverse to the extended length of the cutter bar, a drive means extends along the cutter bar for rotating the cutter tool and a collet chuck for engaging the cutter tool located remote to bearing seats to prevent radial distortion of such bearings when the cutter tool is engaged.

Abstract: A blade mounting device is operable for mounting a blade on a movable member of a cutting member which is moved in a predetermined motion for a cutting operation. The blade mounting device includes a pair of claws mounted on the movable member and operable by an operator between a closed position for clamping the blade and an open position for releasing the blade. A first and a second thread mechanism are provided for converting the rotation of the actuation member into an axial movement of the actuation member relative to the movable member and for converting the rotation of the actuation member into an axial movement of the claws relative to the actuation member.

Abstract: A chucking barrel is connected to a holder capable of being fitted into a rotation spindle of a machine tool. A plurality of axially extending projections are disposed in equally spaced relationship as viewed in the circumferential direction on the connection surface side of the holder, and a plurality of opening portions are formed between adjacent projections. A plurality of teeth-like projections, capable of being fitted in the opening portions, are radially formed on a driving annular member, and a plurality of male threads are formed on the outer surface of the tooth-like projections so as to allow the driving annular member to be displaced in the axial direction. A tightening ring has a plurality of female threads threadably engageable with a plurality of male threads on the driving annular member formed on an inner hole surface thereof, and the tightening ring is rotatably held on the outer peripheral surface of the chucking barrel.

Abstract: A combination tool has a tool holding fixture for connecting the combination tool to a drive spindle of a machine tool. The tool holding fixture includes a receiving member. A grip with tensioning sleeve is provided. The grip is received in the receiving member of the tool holding fixture and clamped with the tensioning sleeve within the receiving member. The grip has a receiving element for receiving a shank of a working tool and an end face facing away from the holding fixture. At least one cutting member is connected to the end face of the grip.

Abstract: A mounting device for mounting a machine element to a shaft, particularly in critical timing and high torque applications, is specifically adapted to be frequently assembled and disassembled without coming apart or in any way adversely affecting the operation of the mounting device. The mounting device includes an inner tubular element, an outer segmented tubular element, and a tubular nut. A through extending radial opening is provided in each segment of the outer element, and a circumferential groove in the outer surface of the inner element with first and second axially spaced radially extending walls.

Abstract: An improved method for generating a toric surface on a molding tool for forming contact lens molds comprises:(a) providing a tool which comprises an elongated body and a molding portion at one end of the tool, wherein the molding portion comprises a surface which is substantially spherical;(b) applying a force to the elongated body so as to distort the spherical surface of the molding portion;(c) machining a substantially spherical curve in the distorted surface while maintaining the applied force; and(d) releasing the applied force, wherein the spherically cut surface assumes a toric shape upon release of the applied force.

Abstract: A collet-and-shank assembly for gripping a work piece or tool used in rotary cutting equipment. The assembly includes a dual-threaded nut that enables the machine operator to lock and release the device from a single end. The dual-threaded nut is completely recessed within the shank, thereby reducing the overall length of the assembly and increasing the available working space. In the preferred embodiment of the collet-and-shank assembly, the dual-threaded nut has an interior right-hand threading corresponding to the outside threading of a section of the collet. The exterior of the dual-threaded nut has a threading orientation opposite to that of the interior region, corresponding to the threading of an interior section of the shank. When the exterior of the dual-threaded nut is threaded into the shank and the collet is threaded into the interior of the dual-threaded nut, the collet is affixed to the shank, and the work piece or tool is also locked within the collet.

Abstract: A collet chuck having a tubular housing with the inside diameter tapering outwardly at one end to match the taper of an inserted collet, threads on the reduced outside diameter of the housing at this same end for a collet closer or disc tightener to screw on. This collect closer is in the shape of a disc with knurled outer surface, and radial holes spaced in this outer surface so a lever can be inserted in any of these holes to assist in screwing the disc on the housing. A section of the inside diameter of the disc is threaded, the remaining part is an enlarged recess. When the disc is screwed on the housing, a needle thrust bearing and the flat ring of a rod assembly is loosely positioned in the recess of the disc tightener. A lock ring that slides on the larger diameter of the housing is fastened to the disc tightener to form a closed pocket with the ring and bearing inside.

Abstract: A quick disconnect coupling mechanism for a collet and collet tube facilitates connection and disconnection of the two members to and from one another. In a preferred form, the collet is provided with circumferentially spaced external threaded portions which are separated by unthreaded portions. The collet tube is provided with internally threaded, circumferentially spaced mating threaded portions which are separated by unthreaded portions. The collet tube can be quickly slipped over the collet, and located at a predetermined axial position thereon, and the two components can be rotated relative to one another to cause the threads to be moved into engagement with each other. The invention provides an indicator system for providing initial alignment of the collet tube with the collet. In a independently limits axial movement of the members relative to one another beyond a preset torque limit.

Abstract: A woodworking power tool comprising a base plate having a motor mounted thereon at one end of the base plate. The motor has a motor housing on which a spindle housing is mounted for rotation through an arc of 180.degree.. The spindle housing has a spindle therein and the spindle is adjustably mounted for up and down movement with referene to the bottom flat surface of the base plate. A toggle mechanism is carried by a handle grip on the base plate for adjustably locking the spindle housing in a fixed, rotative position on the motor housing. A shaft is rotatably mounted in the spindle and has a tool-actuated collet for releasably attaching the shank of a cutting tool to the shaft. A drive train connects the drive shaft of the motor with the shaft of the spindle to rotate the cutting tool on the end of the spindle shaft.

Abstract: The head or bridge portion of an otherwise standard medical staple is provided with an elongated groove in each transverse side thereof. The jaw members of a medical staple holder are provided with elongated ridges for extending into the grooves in the staple when the staple is being held by the staple holder to thereby securely hold the staple.

Abstract: A drill holding chuck is provided having particular utility for use with a drill sharpening tool. The chuck includes an outer tubular housing having cylindrical ends rotably receivable in bearing members to provide spaced support for the chuck and the jaw closing force is applied to the chuck jaws about midway of their length.

Abstract: A gear hobbing machine, which comprises a hobbing spindle which is supported at its outboard end in a bearing assembly attached to but removable from a supporting member and including a bearing sleeve surrounding the spindle, and means between the sleeve and the spindle which normally occupies a position in which it eliminates any significant radical play between the sleeve and the spindle but is movable to an alternative position in which it permits movement of the sleeve with respect to the spindle to enable the hob to be changed.