Abstract: A centering vice is provided, including: a base, a clamp assembly and an adjusting assembly. The base includes a sliding groove extending in a first direction and a first abutting portion. The clamp assembly includes a first jaw portion and a second jaw portion. The adjusting assembly includes a threaded rod, a positioning member and two adjusting members. The threaded rod includes a first threaded segment, a second threaded segment and a positioning portion. The positioning member is immovably connected to the positioning portion and disposed between the two adjusting members, and the two adjusting members respectively have a second abutting portion abutted against the first abutting portion. The two adjusting members are movable relative to the base in a second direction lateral to the first direction to urge the positioning member to move in the first direction.

Abstract: A vise assembly is disclosed. In one example, the vise assembly includes a vise body and a jaw pusher movably coupled to the vise body. The jaw pusher includes a jaw insert having a first top edge and a second top edge, where the first top edge is an outward extending radius edge. A jaw is provided having a jaw top and a jaw bottom, the jaw bottom including a recess for receiving the jaw insert, the recess including a ramped surface extending longitudinally along a top edge for receiving the jaw insert radius edge and wherein the positioned on the jaw pusher without the use of tools.

Abstract: A convertible sawhorse and work table assembly includes two sawhorse legs, a worktable and two pivoting support rods. The two support rods are pivotably attached to the work table near one end thereof and to one of the sawhorse legs at the other end thereof. When in the closed condition, the sawhorse legs are folded against each other, with the worktable folded along one of the legs and the two support rods folded against the other sawhorse leg. In a second condition, the sawhorse legs are pivoted away from each other with the worktable and support rods remaining folded against the legs. In a third condition, the table is pivoted upwardly away from the one sawhorse leg until it is disposed substantially horizontally above the sawhorse legs, and is then slid rearwardly relative thereto until the pivot support rods are fully extended away from the other sawhorse legs.

Abstract: A hydraulic pressure vessel long seam welding jig device having a triangular frame, a pair of hydraulically actuated clamp mechanisms each having a clamp activating hydraulic cylinder operatively associated therewith, whereby each of the clamp mechanisms are positioned on opposite ends of the carriage beam and arranged to hold a workpiece during a long seam welding operation.

Abstract: In a clamping device (1), in particular vice, the clamping device comprising: a housing (2) which is U-shaped in cross-section and in which one or two guideways (8) extending in a linear direction are incorporated, at least one base jaw (11) which is mounted in the guideway (8) and in which an internal thread (12) is provided, and a drive spindle (9) which is rotatably mounted in the respective housing (2), is arranged parallel to the guideway (8) and is drivably coupled to the respective base jaw (11), the threads (10) worked into the drive spindle (9), through which the torques from the crank are transmitted for the linear displacement of the base jaws (11), should be permanently encapsulated in a watertight and airtight manner irrespective of the position of the base jaws (11) or the drive spindle (9), and on the other hand the adjustment travel (?s) of the base jaws (11) or clamping jaws (13) should be as large as possible in order to clamp workpieces with configurations that can be completely differe

Abstract: A workpiece holding device includes a main body having a groove and a bearing plate configured to receive a workpiece; an elastic member mounted in the groove at an angle relative to the bearing plate, and having an engaging portion protruding beyond the groove; and a resisting member having an inclined surface received in the groove. The inclined surface can abut the elastic member. When the resisting member rises it forces the engaging portion of the elastic member to move toward the bearing plate, thus securing the workpiece when present. When the resisting member lowers the elasticity of the engaging portion causes it to move away from the bearing plate, thus releasing the workpiece when present.

Abstract: A clamping system may include one or more clamps configured to be placed in travelling engagement with respective legs of a frame. Workpieces such as wood panels may be clamped against the frame by jaws of the one or more clamps. The one or more clamps may be easily repositionable along the legs of the frame.

Abstract: A clamp assembly for securing together in a superimposed relationship two elongate members each having a pair of opposite edge regions, includes a clamping frame having four frame members, the frame members of a first pair of the frame members being spaced apart by a second pair and the frame members of the second pair being spaced apart by the first pair, the second pair allowing the spacing of the frame members of the first pair to be varied whereby the first pair may be brought into contact with opposite edge regions of a first of the elongate members and/or the first pair allowing the spacing of the frame members of the second pair to be varied whereby the second pair may be brought into contact with opposite edge regions of the second of the elongate members, the two pairs of frame members being interconnected by first connection elements.

Abstract: The present disclosure provides a squeeze packing having a cut surface that describes a three-dimensional curved surface shape, in which the cut surface can be temporarily held with ease and intimately attached in an accurate manner without the use of an adhesive during fitting onto a device. The squeeze packing has, on at least one arbitrary portion of an endless ring finished to predetermined dimensions, a cut surface describing a three-dimensional curved surface shape extending diagonally so as to form a predetermined angle ? with respect to a radial direction of the ring, having a substantially S-shaped profile in side view, and curving in a width direction.

Abstract: A two jaw vise having a base extending in a longitudinal direction between two ends, a central fixed block and opposing jaws on either side of the central block. The opposing jaws being movable longitudinally and joined to the base for controlled movement longitudinally. The base including a base block extending longitudinally between the first and second ends and including first and second longitudinally extending rails. The first and second rails extending parallel to the base block and being spaced from the base block. The first and second rails at least partially forming the controlled movement of the jaws. The base further including first and second pluralities of vertically extending columns extending between the base block and the first and second rails, respectively. The base including at least one gap between adjacent columns.

Abstract: A clamping device for adjoining board materials includes: a C-shaped base having a base section, a top arm and an upright arm; a first press rod and a second press rod vertically movably fitted through the top arm; two first fastener assemblies for fastening and locating the press rods; a horizontal holder mechanism fitted on the first press rod and vertically movable along the first press rod; and a second fastener assembly for adjustably fastening the holder mechanism to the first press rod at a height. The holder mechanism includes at least one horizontally movable guide pin and an abutment member disposed at a front end of the guide pin. In use, a horizontal board material and an upright board material are placed in the base and fixedly held with the first and second press rods respectively. The abutment member serves to abut against and hold the upright board material.

Abstract: A two jaw vise having a base extending in a longitudinal direction between two ends, a central fixed block and opposing jaws on either side of the central block. The opposing jaws being movable longitudinally and joined to the base for controlled movement longitudinally. The base including a base block extending longitudinally between the first and second ends and including first and second longitudinally extending rails. The first and second rails extending parallel to the base block and being spaced from the base block. The first and second rails at least partially forming the controlled movement of the jaws. The base further including first and second pluralities of vertically extending columns extending between the base block and the first and second rails, respectively. The base including at least one gap between adjacent columns.

Abstract: The present invention is a hinge repair tool constructed from two, spaced apart pairs of modified vise grip or wrench pliers. A single, elongated, upper bar is connected to the respective top jaws of each of the pairs of pliers. Two lower bars are also connected to respective lower jaws of the two pairs of pliers. Each of the pairs of pliers is operative independently of one another, so that each of the respective lower bars can be repositioned relative to the common upper bar. The lower bars are separated from one another and a gap is formed therebetween. A rigid bar is connected to the handles of the two pairs of pliers to provide additional stability. The vise grip pliers each include a mechanism for locking the lower jaw relative to the upper jaw thereof.

Abstract: A clamp device including a support frame member, a lower clamp unit and an upper clamp unit supported by the support frame member. The lower clamp unit has a pair of lower jaws and a first actuator for actuating at least one of the lower jaws between clamped and unclamped positions. The upper clamp unit has a first upper jaw and a second upper jaw, and a second actuator for actuating at least one of the upper jaws between clamped and unclamped positions, the first upper jaw being fixed for movement with one of the lower jaws.

Abstract: A clamp device including a support frame member, a lower clamp unit and an upper clamp unit supported by the support frame member. The lower clamp unit has a pair of lower jaws and a first actuator for actuating at least one of the lower jaws between clamped and unclamped positions. The upper clamp unit has a first upper jaw and a second upper jaw, and a second actuator for actuating one or more of the upper jaws between clamped and unclamped positions, the first upper jaw being fixed for movement with one of the lower jaws.

Abstract: A clamp to make a straight edge on a working board has a base with a lower surface to slide on a table saw and a main wall that extends upward from the base. A lower support extends outwardly from the main wall in opposite directions, and two upper supports extend outwardly from the main wall in opposite directions to define channels, wherein a reference board is placed in one channel and the working board in the other channel. A shim arm is pivotally mounted to and extends along the base. A shim support pad is mounted at the free end of the arm and its upper surface is in the same plane as the upper surface of the base. The shim arm swings out from the base so that the pad forms a support on which the working board rests to effectively increase the width of the base.

Abstract: A vise for holding more than one work piece on the support surface of a machine tool has a base for mounting on the support surface. More than one stationary jaws are fastened to the base. More than one movable jaws are slidably mounted on the base to move toward and away from the stationary jaws to securely hold at least one work piece between each pair of a stationary and a movable jaw. Movement of the each movable jaw is provided by a first mechanism that closes on the work piece snugly to accommodate minor variations in work piece dimensions. A second movement mechanism moves all of the movable jaws with great force including a spring bias to tightly clamp all of the work pieces at once with enough force to enable machine operations on the work pieces with no chance of their moving from the machining operations.

Abstract: A method for securing a component for manufacture. The method includes fixedly coupling a first clamping member and a biasing mechanism to a tool that includes a fixture. The fixture includes a first clamping member, a second clamping member, and a biasing mechanism. The method further includes coupling the second clamping member to the fixture, using the biasing mechanism to align the component within the tool between the first and second clamping members such that the component is maintained in position relative to the fixture, securing the component between the first and second clamping members such that the first clamping member, the second clamping member, and the component are fixedly secured in position with respect to the fixture, and retaining the component in position with respect to the fixture using the first and second clamping members.

Abstract: A vise system including a plurality of jaws associated with a vise body. A first jaw is attached to a first shaft which are both slidable with respect to the vise body. A second jaw is attached to a second shaft which are both slidable with respect to the vise body independent of the first jaw and first shaft. A locking mechanism is associated with the first and second shafts for locking the first and second shafts, and first and second jaws, in place. The locking mechanism includes a first collet partially surrounding the first shaft, and an aligned second collet partially surrounding the second shaft. First and second stops are operatively connected to a handle so that as the handle is turned, the first and second stops engage the respective first and second collets to compress the collets over the shafts to immobilize them.

Abstract: A fixture for holding workpieces on a machine tool table includes: a base plate for placement upon table rails and slidable along such rails; a locking plate under the base plate for rotation between a locking position to secure the base plate to the table rails, and an unlocked position clear of the table rails; an upright center block on the base plate; left and right slide blocks on opposite sides of the center block, releasably clamped so as to be slidable along the base plate toward and away from the center block, each slide block including a fluid driven piston movable toward and away from the center block to releasably clamp a workpiece against it.

Abstract: A vice jaw assembly mounted upon a precision machining piece of equipment, the equipment including a platform accessible by a machining tool. The vice assembly includes a base which is fixedly secured upon the platform and first and second spaced apart jaw members which are in turn mounted upon the base. A crank mechanism is employed for actuating at least one of the jaw members in directions towards and away from each other. First and second spacer blocks are secured to the first and second jaw members, respectively, by mounting bolts which extend through aligned apertures between the spacer blocks and jaw members. A mounting pin secures to the first spacer block and extends through an aperture in the second spaced apart spacer block. Additional intermediate and floating spacer blocks are arrayed at predetermined locations between the first and second spacer blocks and each includes an additional aperture formed therethrough which receives in inserting fashion the mounting pin.

Abstract: The clamping device includes a body with two slides which can slide therein. The slides each carry a jaw that can be shifted opposite to the other jaw by an axially movable screw spindle. A central jaw can be fixed in the central region of the body. An abutment part is arranged at an operating end of the body, in the lower region of the slide and of the body facing away from the jaw. The abutment part has a lug which can shift to a limited extent in an end recess of the base part of the body. A spring arrangement is supported at one end on the lug and at the other end in a pocket of the base part. The abutment part includes a finger which engages in a longitudinal groove provided at the underside of the slide and carries a clamping element at its free end facing towards the central jaw, with which device the finger can be jammed in the longitudinal groove.

Abstract: A clamping device is described with a body, which has a substantially U-shaped cross-section, and at least one slide which can be shifted in the body by a screw spindle and which has at its upper side a plurality of fixing recesses arranged along the slide longitudinal direction with a mutual centre-to-centre spacing for selective engagement of a corresponding fixing projection of a jaw which can be repositioned and a plurality of threaded bores for fixing screws of the jaws. A plurality of cover sheets are provided on the upper side of the slide and they are slidably guided on the slide in its longitudinal direction and have a length which corresponds to the centre-to-centre spacing (pitch) of adjacent fixing recesses. The number of cover sheets corresponds to the number or centre-to-centre spacings (t) and the cover sheets can slide over the region of the currently unused fixing recesses and threaded bores.

Abstract: In a two station machining vise having a stationary, center jaw and movable opposing jaws, the interior of the vise body is totally enclosed to protect the working components from machining byproducts. The vise has a brake mechanism and an offset mechanism associated with one slide so that workpieces can be engaged and released sequentially. If the brake mechanism is not activated, the two movable jaws are moved simultaneously. With the brake mechanism engaged, one movable jaw is moved to position first and then the movable jaw having the brake and offset mechanisms connected therewith is subsequently moved into position. When the workpieces are to be released, the second movable jaw is first retracted the offset distance and then the first movable jaw must be completely retracted prior to any subsequent movement by the first movable jaw.

Abstract: Clamping device for simultaneously holding several workpieces between a fixed central jaw and two endjaws situated on either side of it and joined by a threaded, lengthwise moveable spindle. A helicoidal spring surrounding the spindle urges it towards its extremity which is actuated, so that when the spindle tightened the spring elastically presses the end jaw far from the operator against a workpiece placed between said far jaw and the central jaw. This workpiece is thus immobilized even without counterpressure from the near end jaw, and need not be held by the operator who can simultaneously insert a second workpiece between the near end jaw and the central jaw with one hand and tighten the spindle with the other.

Abstract: A vise having machinable low profile removable jaws includes a stationary jaw attached between two movable jaws for holding two work pieces during a machining process. The stationary jaw is positioned adjacent to a pair of guide rails, which are mounted onto a base. The movable jaws are removably attached to a first and second slide member by a mating connection which is positioned below the work surface of the vise. The slide members are contained within a channel in the base. A screw shaft is disposed within a bore of the slide members and is contained within a tube and a sleeve which are telescopically connected together for protecting the threads of the screw shaft from metal chips and other debris. A tension mechanism is disposed in an aperture of the first and second slide members for controlling movement of the movable jaws. The base has interlocking edges for allowing vises positioned side by side to be mounted closer together.

Abstract: A shield for use in connection with a workholding apparatus that has a base and at least two jaw members operably supported on the base for selectively clamping a workpiece therebetween. The shield comprises a plate member adapted to be removably received on the base and configured to permit at least one jaw member to move relative thereto. The plate member may be sized to provide the workholding apparatus with a worksurface that is wider than the base.

Abstract: A multi-station, single action high precision mechanical vise for simultaneously clamping at least two work pieces with high dimensional stability and high holding forces. The multi-station work piece holder is used to hold a set of work pieces, so that sets of machining operations can be performed on the work pieces using the same tool, reducing the number of work tool change-outs needed when producing a large number of machined pieces.

Abstract: A work holding apparatus includes a generally horizontally enlarged platelike support pallet having a plurality of vises mounted on and integrated into the pallet. The vises are typically disposed in sidewardly spaced but generally parallel relation. Each vise is associated with an elongate groove which extends horizontally of the pallet and opens downwardly from the upper surface thereof, and the vise jaws cooperate with and project downwardly into the groove so as to be movable longitudinally of the groove, whereupon the pallet effectively functions as the base for the jaws to simplify the overall structure of the apparatus and minimize the overall height thereof. The jaws are preferably activated by an elongate actuator screw which extends longitudinally of the groove and is also preferably positioned so as to be at least partially recessed into the groove to further facilitate the integration of the vise into the pallet and the minimization of the overall structure and height thereof.

Abstract: An apparatus for cutting a non-metallic magnetic component from a strip of non-metallic magnetic material useable on a rotor or the like includes a pair of blocks placeable in juxtaposed position to form a support frame having a predetermined length. Each of the strip of non-metallic magnetic material is placed on the support frame and secured by, for example, wedges to each of the blocks. The block is moved by, for example, a cam to extend the length of the support frame so that the length of a strip of non-metallic magnetic material placed on the support frame and secured to the blocks may be stretch to a desired length and cut.

Abstract: A vise with first and second movable jaws slidable on elongate ways on a base. An actuator shaft extends longitudinally of the base and has first and second reversely threaded portions threadably engaged with the respective first and second movable jaws. A releasable retraining device cooperates between the base and the second jaw to restrain slidable movement thereof. The actuator shaft is axially floatable supported relative to the base and when rotated in one direction causes the first jaw to move in a first direction along the ways. The restraining device prevents slidable movement of the second jaw so that rotation of the actuator shaft causes the shaft to be axially displaced due to its threaded engagement with the second jaw, and this increases the movement rate of the first jaw due to its threadable engagement with the actuator shaft.

Abstract: A shield for use in connection with a workholding apparatus that has a base having a longitudinal slot and at least two jaw members operably supported on the base for selectively clamping a workpiece therebetween. The shield comprises a plate member adapted to be removably received on the base and configured to permit at least one jaw member to move relative thereto. The plate member may be sized to provide the workholding apparatus with a worksurface that is wider than the base, the plate member having an opening to permit movement of the jaw members such that it is completely covered by the cooperation of the jaw members and the plate to prevent debris from entering the longitudinal slot of the base. Alternately, the opening is provided with grooves for slidably guiding a telescoping cover plate which is attached to movable support members and is cooperated with the cover plate to completely cover the longitudinal slot during the clamping operation.

Abstract: In a wide-opening vise having two movable jaws and a fixed center jaw, the movable jaws are easily removed and reset onto associated slides. The slides have upperly projecting bodies with pressure release latches for positively fixing the jaws in position on the slides. Further, a brake and off-set assembly is associated with one movable slide. The combination allows the second movable jaw, after the first movable jaw has engaged a workpiece, to engage and disengage from a workpiece without effecting the engagement of the first movable jaw with its held workpiece. At least two off-set positions are provided for the engagement and disengagement of the second movable jaw.

Abstract: A unitary vise body is provided having a flat upper reference surface extending between opposing first and second ends. A first stationary jaw extends upwardly from the reference surface at the first end of the vise. A second stationary jaw extends upwardly from the reference surface at a location about half-way between the first and second ends. Both the first and second stationary jaws have workpiece abutment surfaces that extend from the reference surface at an angle that corresponds to the reference surface angle of a workpiece clamping extension. The area between the first and second stationary jaws defines a first clamping region and includes a movable jaw which is actuated by a threaded shaft that extends through a threaded opening in the lower portion of the jaw. The area of the vise extending from the second stationary jaw to the opposing end of the vise defines a second clamping region.

Abstract: In a wide-opening vise having two movable jaws and a fixed center jaw, the movable jaws are easily removed and reset onto associated slides. The slides have upperly projecting bodies with pressure release latches for positively fixing the jaws in position on the slides. Further, a brake and off-set assembly is associated with one movable slide. The combination allows the second movable jaw, after the first movable jaw has engaged a workpiece, to engage and disengage from a workpiece without effecting the engagement of the first movable jaw with its held workpiece. At least two off-set positions are provided for the engagement and disengagement of the second movable jaw.

Abstract: The present invention provides precision machine vise equipment for use in the NC machining of workpieces which improves the efficiency of the operation by making it possible to insert, secure, and machine some plural number of workpieces, such as two, or more preferably, four, in each cycle of machine operation, while causing each of said workpieces to be precisely located with respect to each of three mutually perpendicular datum planes, and without the necessity of having the machinist or machine operator conduct a positioning or squaring operation. This is done by providing, in accordance with the present invention, in the first place, a two-place precision machine vise of the type described in U.S. Pat. No.

Abstract: In a wide-opening vise having two movable jaws and a fixed center jaw, the movable jaws are easily removed and reset onto associated slides. The slides have upperly projecting bodies with pressure release latches for positively fixing the jaws in position on the slides. Further, a brake and off-set assembly is associated with one movable slide. The combination allows the second movable jaw, after the first movable jaw has engaged a workpiece, to engage and disengage from a workpiece without effecting the engagement of the first movable jaw with its held workpiece. At least two off-set positions are provided for the engagement and disengagement of the second movable jaw.

Abstract: A secure storage drawer and an installation clamp for the drawer are disclosed. The drawer is suitable for mounting to a horizontal surface without surrounding cabinetry. Suspension rails which support the slides for the drawer are so designed that when the drawer is closed there are no exposed fasteners. Tampering is thus discouraged. The drawer has a wide shallow preferably partitioned front storage area and a wide deep rear storage area which is large enough to accommodate purses or handbags. The drawer is readily retrofitted to installed furniture. An advantage of the drawer is that it provides generous storage capacity yet permits a seated user to move freely across a front of a desk or table to which the drawer is mounted. The installation clamp permits a drawer to be retrofitted to installed furniture quickly and efficiently. The installation clamp is useful for mounting any drawer supported by suspension brackets.

Abstract: A vise comprises a main seat, two movable jaws, two transmission blocks, a control rod, and a fixing jaw mounted detachably on the main seat to form together with the two movable jaws the double clamping seat. The control rod is provided with a tolerance compensating device comprising: a sleeve fitted over the control rod and fastened to the main seat; two end thrust members mounted on the control rod and located at both ends of the sleeve; and at least one elastic element located between the sleeve and the control rod for providing a resistance preventing the control rod to move axially. The double clamping seat can be converted into the single clamping seat by removing the fixing jaw from the main seat. The tolerance compensating device and the control rod are provided therebetween a fastening device regulating the control rod to turn without moving axially.

Abstract: The invented fixture consists of a double acting jaw with a fixed part (F) and a movable part separated in two (R1 and R2), where the latter can slide along slide surfaces (8 and 9) on the fixed jaw for example by the use of a screw (A). The fixed jaws are oriented to a frame or jig by the use of for example anchoring bolts (B) on each side of work pieces (1). The orientation along balks or slots is performed by pins (C) through fixed jaws and balks or a jig through holes arranged - equidistant in the balks and in different combinations in the fixed jaws.

Abstract: A two-station, single action device has a body, with a fixed center block forming oppositely facing fixed jaws. At opposite ends of the body, movable jaws are moved toward and away from the fixed center block simultaneously using an actuator drive. The actuator drive has a longitudinal actuator axis and a first member joined to the first movable jaw and a second member joined to the second moveable jaw. A longitudinal power drive joined to the first and second members drives the first and second members in opposite axial directions to move the movable jaws simultaneously toward the fixed jaw. The first member and the second member further rotate about the longitudinal actuator axis in a first rotatable direction to move the movable jaws simultaneously toward the fixed jaw and rotate in a second rotatable direction to move the movable jaws simultaneously away from the fixed jaw.

Abstract: An apparatus for installing wooden deck planks on a supporting frame of joists has an actuator mounted on a base plate with an output shaft movable between an open position and a closed position. A control device is mounted on the frame for selectively controlling the actuator to move the output shaft. A fixed angle clamp is mounted on the base plate and has a leg for engaging an edge of a first deck plank, a sliding angle clamp is attached to the output shaft and has a leg for engaging an edge of a second deck plank, and a spacer plate is slidably mounted on the base plate between the clamps and has a predetermined thickness corresponding to a desired spacing between adjacent deck planks.

Abstract: An eyeglass frame holder is provided in the form of a variable contour vice. The vice incorporates a series of parallel slideable jaw elements in two banks that may be locked in position by a single clamping means.

Abstract: An improved machine vise, particularly well suited for use on milling machines and the like, having an improved arrangement for securely holding workpieces of irregular shapes or several different, diversely sized workpieces simultaneously. The vise is provided with a fixed jaw and two movable jaws mounted in a side by side relationship such that each jaw is free to move back and forth into and out of a gripping relationship with the object being clamped. The two movable jaws are yoke driven on a shaft such that a single forward thrust of the yoke exerts a forward and downward pressure to move both jaws forward while at the same time allowing for a translational motion between said adjacent jaws. These jaws can thus simultaneously grip and secure individual workpieces of different dimensions or differently sized portions or cross-sections of the same workpiece. Each jaw may also be provided with individually mounted fingers that pivot into the best gripping relationship with the object being clamped.

Abstract: A machine vise holds two parts against a center mounting block, and has simultaneously moving jaws slidable on a vise body toward opposite sides of the center jaw for clamping. One of the jaws is driven through a torque limiting clutch to the drive screw to provide a preload on one of the parts, after which the clutch releases for final, high pressure tightening.

Abstract: A machine vise for use in clamping and holding a work product having parallel and non-parallel sides. The vise is constructed with a pair of pivotal movable jaws positioned between two fixed outer jaws in the preferred embodiment. A pair of movable wedges are positioned between the movable jaws and move the jaws towards the fixed jaws. Both the movable jaws as well as the wedge blocks are mounted to pivot independently of each other. A spring bias is positioned between the movable jaws to bias the jaw action.The vise may be constructed in a single wedge configuration and may be mounted with other similar vise configurations to provide a multiple vise configuration.

Abstract: A machine vise for holding workpieces on a milling machine or the like comprises a pair of movable jaws arranged to move in parallel and to cooperate with a fixed jaw for holding workpieces for machining. A yoke is pivotally mounted with respect to the jaws and operates to provide equal pressures for gripping with equal pressure separate workpieces or different parts of the same workpieces.

Abstract: A precision machine vise is provided with quick-change head members or means to facilitate the changeover from making one kind of part to another, preferably in equipment provided with computer numerical control. The precision machine vise is of the kind having obliquely oriented surfaces as an anti-cocking measure. One first part of the equipment supported by the base of the precision machine vise has an upstanding boss, and a second part of the equipment containing jaw plates in contact with the work has a vertical bore in which said boss fits, and there is a horizontal bore through the boss of the first part and through the second part, into and through which a locking-in means fits. The first part is provided with means to minimize play between the first part and the second. The second part mentioned above may be a disposable item. For use with a precision machine vise of the two-place type, there is also provided a changeable "fixed" central member, securable to the base via bolts accessible from above.

Abstract: Apparatus for holding two workpieces, each with respect to a fixed reference location, is disclosed. The apparatus includes a base to which a fixed central jaw member is secured. A clamping assembly which includes a first slide member and a second slide member which are joined by a threaded screw shaft is provided for movement relative to the central jaw member. A biasing means is attached to the first slide member by means of a compression spring assembly and may be either displaced with the first slide assembly or secured to the base. When the biasing means is secured to the base member and the first slide is displaced away therefrom, a biasing force is generated so as to urge the second slide member toward the central jaw to hold a workpiece therebetween. As such, one workpiece may be retained or released prior to another workpiece. Further, the instant construction provides the biasing feature without requiring any increase in overall vise length.

Abstract: By providing apparatus such as that shown in U.S. Pat. No. 4,529,183, but with the removable central jaw bolted from the top and means provided at the handle end of the device to fix the location of the one of the movable jaws of the structure as shown in the above-mentioned patent, there is obtained a particularly useful apparatus which will do everything that can be done with the vise of the above-mentioned patent, plus being able to conduct precision machining upon individual pieces which are considerably larger in the grasped dimension.