Abstract: An arrangement at a vice or chuck, where a jaw insert (22) in the vice or chuck is arranged such that it can be rotated around at least one axis (A) such that a holding surface (23) of the jaw insert, which holding surface is turned to face a second holding surface (26) on a second jaw insert (25), can be displaced by rotation of the jaw insert (22) around the axis (A) from its normal holding position facing the second holding surface (26) to a working position in which the holding surface (23) does not face the second holding surface (26) and in which it can be accessed for working.

Abstract: A work orienting plate or angled vise parallel for use with a machine vise and which angled plate has first, second and third reference edges with the second and third reference edges being spaced apart side edges that are perpendicular to the first edge. Angled work piece support edges join the second and third reference edges, respectively. The angled work piece support edges are at different angles from one another so that a work piece can be supported on any one of the edges relative to a reference surface of a vise on which the work orienting plate is mounted to position the work piece at selected angles for machining angled surfaces.

Abstract: An arrow fletching device with plate clamp, as well as features and aspects thereof, provides an arrow builder the means to accurately and repeatedly position fletching against the shaft of an arrow, without a spring loaded butterfly clamp component, and securely hold the fletching thereto until a bond is attained between the fletching and arrow shaft via an adhesive. Exemplary embodiments of an arrow fletching device with a plate clamp are, generally, jig apparatuses operable to precisely position an arrow shaft relative to an arrow fletching. More particularly, exemplary embodiments of an arrow fletching device comprise a plate component, in lieu of a spring-loaded butterfly clamp, useful for receiving, positioning and retaining fletching against the shaft of an arrow.

Abstract: An arrangement at a vice or chuck, where a jaw insert (22) in the vice or chuck is arranged such that it can be rotated around at least one axis (A) such that a holding surface (23) of the jaw insert, which holding surface is turned to face a second holding surface (26) on a second jaw insert (25), can be displaced by rotation of the jaw insert (22) around the axis (A) from its normal holding position facing the second holding surface (26) to a working position in which the holding surface (23) does not face the second holding surface (26) and in which it can be accessed for working.

Abstract: A vise jaw accessory that attaches to a conventional vise having a unique means of mounting above the vise, using a set of accessory jaw brackets, front and rear, with special mounting provisions for each, capable of supporting and positioning a set of accessory jaws that hold and stabilize a wide variety of irregularly shaped objects by means of opposing arrays of spring-loaded pins capable of individual deflection. The jaws are designed to be interchangeable to accommodate work types ranging from delicate to heavy-duty, as well as flat faces or other jaw face types.

Abstract: An arrow fletching device with plate clamp, as well as features and aspects thereof, provides an arrow builder the means to accurately and repeatedly position fletching against the shaft of an arrow, without a spring loaded butterfly clamp component, and securely hold the fletching thereto until a bond is attained between the fletching and arrow shaft via an adhesive. Exemplary embodiments of an arrow fletching device with a plate clamp are, generally, jig apparatuses operable to precisely position an arrow shaft relative to an arrow fletching. More particularly, exemplary embodiments of an arrow fletching device comprise a plate component, in lieu of a spring-loaded butterfly clamp, useful for receiving, positioning and retaining fletching against the shaft of an arrow.

Abstract: A method for error-proofing clamping operation performed with a reconfigurable clamp having a body, a locking member, a plurality of moveable pins for contacting an object, and a plunger is provided. The method includes applying a force to the plunger and sensing whether the plunger achieves a fully-depressed position, and releasing the force to the plunger and sensing whether the plunger achieves a fully-extended position. The method may additionally include applying the force to the plunger, contacting the object with the plurality of pins and sensing whether the clamp body achieves a predetermined position relative to a clamping device.

Abstract: Accessory (1) for a holding device, such as a vise, a clamp or the like intended for use in conjunction with the temporary attachment of at least one object with the aid of the holding device, in which the accessory (1) consists of a body (2) equipped with at least one groove (3) and at least one attachment device (4). The invention is distinguished by the groove (3) consisting of at least one arch-shaped contact surface (5).

Abstract: A gripper tip for use with a gripper assembly includes a first gripping surface located at least partially within a first plane and a second gripping surface located at least partially within a second plane that is transverse to the first plane. The first gripping surface includes a first gripping height relative to a first attachment portion associated with the first gripping surface. The second gripping surface includes a second gripping height relative to a second attachment portion associated with the second gripping surface, and the second gripping height is greater than the first gripping height.

Abstract: A modular tooling apparatus for performing a metalworking operation on a workpiece or a family of workpieces. The modular tooling apparatus consists of a base having one or more attachment surfaces, and one or more inserts that can be inserted semi-permanently to the attachment surfaces. The attachment surface is typically a pocket in the surface of the base. The insert has a workpiece support feature that can support and/or secure the workpiece into the proper position and orientation for machining. The base, pockets and inserts are configured to provide a characteristic location and orientation for the workpiece relative to the base, and to the metalworking machine. The modular tooling apparatus permits machining a family of workpiece members that are related but different in detail, by inserting the insert member from the family of inserts to properly position and orient the corresponding workpiece member, without needing to change, disconnect, or move the base tooling.

Abstract: A modular gripper assembly having body with a yoke structure (44) defined at one end thereof and an actuator at an opposite end for reciprocally driving a piston assembly (58) within the yoke structure (44). A pair of opposable jaw members (49) having through-slots (48) formed therein are provided within the yoke structure (44) and coupled to the piston assembly (58) by a cam pin (47) so that at least one of the opposable jaw members (49) pivots when the piston assembly (58) moves withing the yoke structure (44). The jaw members (49) are removable and interchangeable.

Abstract: A tool is provided for clamping, spreading and jacking activity and comprises rectangular, tubular extension bar members, which are used independently or are interconnected to establish a desired tool length. The extension bar members have a plurality of spaced positioning holes located at top bottom and sides along its length to provide length adjustments. Jaw members are selectively attached to the extension bar for force transmitting engagement with a structure or device. A power head having a tubular bar is provided with spaced shoulder members which provide support for a threaded actuator rod extending between them. A head jaw is disposed in moveable guided relation with the rectangular extension bar of the power head and is moved by a drive nut type actuator member which is in threaded relation with the threaded actuator rod and has driving engagement with the head jaw.

Abstract: A universal vise jaw cover comprising an elongated flat panel of resilient material, such as leather, of predetermined length, width, and thickness with a system of self-attachment applied to the backside of the vise jaw cover. The system or systems of self-attachment can be of differing forms. One form is when an adhesive material is applied to the backside of the vise jaw cover and the exposed adhesive material is then applied to the front side of the vise jaw. Another form is when a flexible magnetic material is glued with epoxy or adhesive material to the backside of the vise jaw cover and when the vise jaw cover is applied to a vise jaw of ferrous material, the magnetic material will hold the vise jaw cover in place while the vise is not in use.

Abstract: In accordance with this invention an eccentrically immobilized hinge-type device is provided having a yoke shaped hinging element with cylindrical peripheral surfaces and a channel shaped hinging element with an eye-ended connecting rod, and a relatively eccentric hinge-pin. The cylindrical peripheral surfaces of the yoke shaped hinging element seats in the channel shaped hinging element and both elements pivot on the relatively eccentric hinge-pin which penetrates the bore of the yoke and the eye-end bore of the connecting rod. The eccentric hinge-pin is connected to an activating means that controls the eccentrically applied tension on the connecting rod, consequently the friction between the cylindrical peripheral surfaces of the yoke shaped hinging element and the seat of the channel shaped hinging element, thus affecting hinging ability.

Abstract: An improvement in the structure of a worktable for a wood carving machine includes a positioning device provided with a sleeve having a U-shaped recess at the top for mounting a supporting arm of a clamping device, the supporting arm being provided with an eccentric roller close to an intermediate portion thereof and adapted for sliding on the upper edge of the positioning device, and the clamping device being replaceable with a holder which can be moved up and down along a rod and rotated with respect to a cross-shaped sleeve for holding a workpiece in place.

Abstract: An improved jaw for a rod gripping device is provided including a front, rod engaging face with a plurality of teeth or studs made of a material harder than the jaw body, such as tungsten carbide, with the studs positioned to engage an outer rounded rod surface. In one embodiment, the studs are oriented radially inward toward a longitudinal axis defined by the rod engaging surface. The rod engaging face of the jaw may have a concave shape in its lengthwise direction, thus being adapted to grasp a cylindrical member such as a rod or pipe section. A tool for gripping a rod including a pair of jaws is also provided.

Abstract: A fixturing tool has an elongate body with a polygon cross section so as to define a plurality of sides. At least one annular groove extends around the circumference of the body thereby dividing each of the sides into a plurality of segments. At least one longitudinal groove extends across the plurality of segments which comprise one of the sides of the fixturing tool for retaining a work piece therein.

Abstract: A seat for guiding screws and nails includes a block having two opposite vertical lateral sides and two opposite ends, each of the sides being formed with a plurality of semi-circular holes, and a rectangular opening extending through the two opposite ends, whereby a jaw of a longnose pliers may be inserted into the rectangular opening of the trapezium block to keep the trapezium block at a fixed position thereby enabling a screw or the like to be guided safely, rapidly and accurately by the vertical passage between the semi-circular hole and another jaw of the longnose pliers to a workpiece.

Abstract: A workholding apparatus has an improved positioning assembly centering top jaw members grippingly supporting a workpiece. The workholding apparatus includes a base member defining a horizontally elongate guide channel which opens upwardly through a top surface to form a guide passage. At least first and second jaw assemblies are disposed in longitudinally spaced relation along the respective guide passage, the first and second jaw assemblies each including a bottom jaw element which is slidably positioned for longitudinal displacement within the guide passage, and a top jaw member releasably mounted on the bottom jaw element. The workholding apparatus includes an actuator assembly for effecting movement of the movable jaw members longitudinally along a path formed by the guide passage. The bottom jaw elements each include a push plate element mounted in the guide passage on the inner side thereof.

Abstract: A universal vise that has a movable and a fixed jaw that can be indexed at 90.degree. increments to provide for four separate work clamping surfaces on each jaw. The vise includes a vise screw driving a nut that drives the movable jaw in each of four indexed positions of the movable jaw. The nut provides a down pressure load on the movable jaw with a very low profile. The indexable jaws permit the vise to be adapted to hold four different types of products or workpieces. The movable vise jaw is guided with keys that protrude above the plane of the guideway surfaces of the vise, so that the nut can have a shield rib that completely fills the space between the guideway surfaces to prevent chips from building up in a recess between the rails formed with present vise jaw nuts. The movable jaw and the fixed jaw do not protrude toward the base of the vise beyond the plane of the guideway surfaces on the vise rails.

Abstract: A removable quick change jaw plate for a vise has a T-slot that receives a pull rod that extends into a bore formed in the vise. The pull rod is actuated to pull the jaw toward the vise. A wedge clamp, actuated by a threaded element provides a clamping motion to hold the jaw plate on the vise.

Abstract: A double vise using a single actuating screw with a self-setting preload arrangement includes a vise base, a center fixed jaw and a pair of movable jaws which are movable toward and away from the center fixed jaw. The movable jaws being actuated with the vise screw. The loads on the vise screw from the jaws being reacted initially by springs that apply a resilient preload against a workpiece in either one of the movable jaws. One jaw is driven with a sleeve rotatably mounted on a cylindrical section of the vise screw and driven through a load release clutch. The springs are mounted on a vise screw support housing that is slidably mounted on the vise base and which provides automatic adjustment of the vise jaws to clamp different size workpieces in the jaws. The sleeve has a threaded section for operating one of the jaws.

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: 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: The portable clamp is used, for example, in making repairs to a product, such as a snowboard. The repair volume location of the snowboard is reworked to prepare this repair volume, i.e. a damaged portion of the product, to receive repairing materials. After their placement, a pressure distribution plate of this portable clamp is positioned over, and generally beyond, the repair volume location. Then a bottom clamp bar and a top clamp bar are positioned, respectively, under and over the snowboard. These clamp bars are thereafter drawn together by using the preliminary clamping fastener assemblies located at their respective ends. Then final clamping fastener assemblies, threadably positioned in the top clamp bar, in the central portion thereof, are tightened to continue the distribution of clamping forces to the pressure distribution plate.

Abstract: A mounting fixture for a vibration table which can compensate for work pieces that have different dimensions. The fixture includes a support block which has an elongated slot that allows the fixture to be adapted for work pieces of different lengths and widths, and a pair of clamping blocks which have corresponding chuck and groove features that can compensate for different work piece thicknesses.

Abstract: A vise having a base piece and an invertible V-block supported both laterally and downwardly on the base piece in either inverted position. A movable jaw operates toward and away from the V-block in distances in accord with the inverted position of the V-block, all to accommodate workpieces of different sizes and with only one invertible V-block which is snugly supported in lateral positions on the base piece and which is supported upwardly by shouldering on the base piece.

Abstract: A portable vise is disclosed including a beam along which a hydraulic cylinder assembly is positionable to adapt the vise to a wide range of work pieces. The hydraulic cylinder assembly includes a carrier slidably engaged with a beam flange and which is lockably engageable to the beam during a clamping operation. A lock or stop includes a pair of leg members insertable within a selected pair of beam defined apertures. The cylinder assembly includes a lever operated pump with a self-contained fluid reservoir. The beam is supported on a turntable in turn carried by a pedestal having a wheel equipped base. For clamping articles with curved surfaces, a pair of supplemental jaw plates are provided, each having an irregular clamping surface to assure positive engagement with a clamped article.

Abstract: The present invention includes a welding jig having a first support plate and a second support plate rotatably connected to the first support plate. The second support plate has a template-shaped perimeter including arcuately shaped segments shaped to support pipe fittings of different sizes. By selectively positioning a particular segment and securing locking the particular segment in place, a particular pipe fitting such as a particular 90.degree. pipe elbow can be supported with one end resting on the selected particular segment and the other end resting on the first support plate. By this arrangement, particular pipe fitting can be supported in a predetermined and square position relative to a pipe, thus facilitating welding the particular pipe elbow to the pipe. This allows substantially a one-person welding operation.

Abstract: A block having first and second permanent cavities. The first cavity includes a first vertical, continuous V-groove from the rop of the block to a pocket which has a permanent horizontal bottom wall. The second cavity includes a second V-groove that is parallel to the first V-groove, and which is continuous from the top of the block to a second permanent horizontal bottom wall that is at a predetermined height with respect to the bottom wall of the first cavity. Each cavity includes a bar pivotally attached to the block, which includes a flat surface for pressing normally to the bottom of the V-groove, along a vertical line of contact with the vertical cylindrical portion of a tool in the V-groove when the bar is positioned horizontally across the V-groove and is drawn to the block.

Abstract: An improved flaring tool includes the usual plurality of expandable die blocks retained by a U-shaped frame. A clamping screw is treaded through a clamp block which is rotatably mounted between the legs of the frame at its open end. The screw is movable toward and away from the die blocks to clamp or unclamp tubing between adjacent die blocks. A conical flaring tip is movable against the end of a clamped tubing for flaring same. The clamp block's axis of rotation is perpendicular to the direction of movement of the die blocks and the screw. The improvement comprises a facility which locks the clamp block against rotation when the screw is aligned with the die block and their direction of movement. The locking facility prevents unintentional rotation of the clamp block as the screw is rotated to clamp or unclamp the tubing, but may be manually overcome to intentionally rotate the clamp block.

Abstract: An arrow fletcher for use in supporting an arrow shaft having a nock and holding a fletching proximate the shaft is provided which includes a frame, an shaft support and an indexing head including a nock receiver. The shaft support may include a plurality of discretely sized openings therein for receiving any one of a plurality of differently sized arrow shafts in alignment with the nock receiver. Preferably, the shaft support is rotatably mounted to the frame so that differently sized openings may be brought into position by rotating the shaft support. The indexing head includes a plurality of selectively positionable pointers and indicia located on the body of the indexing head for identifying the angular relationship between the nock of the arrow and the fletching placements. The nock receiver is preferably adjustable relative to the indexing head body whereby the angular relationship between the nock and the fletchings may be changed.

Abstract: A soft jaw attachment to machine vises having precision ways and flat vise jaw faces with widely spaced fastener openings through said vice jaw faces, the soft jaw being an elongated bar of resilient material having a flat face to interface with the vice jaw face, an element of the fastener means being of T-shape engaged in a complementary channel in the soft jaw, the soft jaw being arcuately prestressed and drawn tightly into flat contiguous interengagement with the jaw face; and an embodiment wherein the fastener element is an elongated and resilient prestressed bar; either or both the soft jaw or the fastener element being prestressed: tightness of the soft jaw to the vice jaw being ensured.

Abstract: An adjustable vise includes a toggle plier having first and second handles pivotally joined together to move relative to one another, a fixed jaw mounted to extend upwardly from one end of the first handle, a mounting bar pivotally joining the handles together and extending laterally in one direction from the handles generally perpendicular thereto, and a moveable jaw mounted on the bar to slide therealong and to extend upwardly to a spaced-apart position from the fixed jaw so that when the handles are moved apart, the jaws are caused to move away from one another and when the handles are moved together, the jaws are caused to move toward one another. A locking mechanism is mounted on the moveable jaw and is operable to selectively lock the moveable jaw in place on the mounting bar to thereby prevent sliding movement of the moveable jaw, or to unlock the moveable jaw from the mounting bar to allow sliding movement with respect thereto.

Abstract: An adjustable vise includes a toggle plier having first and second handles pivotally joined together to move relative to one another, a fixed jaw mounted to extend upwardly from one end of the first handle, a mounting bar pivotally joining the handles together and extending laterally in one direction from the handles generally perpendicular thereto, and a moveable jaw mounted on the bar to slide therealong and to extend upwardly to a spaced-apart position from the fixed jaw so that when the handles are moved apart, the jaws are caused to move away from one another and when the handles are moved together, the jaws are caused to move toward one another. A locking mechanism is mounted on the moveable jaw and is operable to selectively lock the moveable jaw in place on the mounting bar to thereby prevent sliding movement of the moveable jaw, or to unlock the moveable jaw from the mounting bar to allow sliding movement with respect thereto.

Abstract: A holding device or lock in a machining vise for positioning plates including parallels and angles wherein the positioning plate is provided with a cleat extending from the rear surface along the bottom edge thereof. The plates are held in place by spring loaded engaging members. A recess in the machining vise, complementary in shape to the cleat, may be provided.

Abstract: A kit for adapting a fishing rod holder to a round or polysided support wherein a pair of base plates are fastened to opposing sides of the support. The kit is provided with two pairs of insert members which are selected to fit either the round or polysided support. The insert members are fastened between the base plates in a sandwich like manner with one of the base plates connected to the rod holder. In a preferred manner the base plates provide either a rail or stanchion mounting for the rod holder on a boat.

Abstract: The present invention relates to an universal clamping device with multi-purpose clamping surfaces, it is composed of a jaw and one or more jaw seats. Wherein the jaw comprises a plurality of vertical jaw seats and each of said jaw seat comprises a vertical curve wall and a horizontal bottom base, said vertical curve wall comprises an extension rib parallel to the bottom base, said horizontal bottom base comprises a piercing hole whch is relatively in the center of the extension rib. The jaw plate has various different vertical clamping surfaces, it comprises peripherally a ring groove corresponding to said extension rib and has a vertical bottom hole corresponding to the piercing hole of said jaw, the maximum radius of gyration of the jaw plate is smaller than the radius of the curve of vertical wall.

Abstract: This invention is a power C-clamp apparatus having a main housing assembly; a power drive assembly mounted within the main housing assembly; a gear drive assembly movable by the power drive assembly; a C-clamp assembly having a movable clamp member axially movable by the gear drive assembly; and a power control assembly operable to selectively control and energize the power drive assembly. The power drive assembly includes a main motor assembly operable through an adjustable clutch assembly to drive the gear drive assembly. The gear drive assembly includes a drive gear member engageable with a driven gear member to selectively move the movable clamp member. The C-clamp assembly includes the movable clamp member and a plurality of interchangable clamp members to cooperate with the movable clamp member.

Abstract: A programmably controllable vise has mechanisms for automatic adjustment of orkpiece position relative to three orthogonal axes. The positions of the vise jaws (during clamping) establish workpiece position along a first axis, and stop members (e.g., piston actuated stops) selectively extendable from the jaws establish workpiece position along a second axis. Two levelling bars supported adjacent the jaws by respective servo-actuators (e.g., double-acting piston type actuators) which adjust the bars along the jaws establish workpiece position along the third axis, as well as workpiece tilt about the first and second axes. Because the adjustments may be made automatically, the vise may operate unattended, with workpieces being loaded and unloaded by a robot. The vise jaws preferably incorporate replaceable jaw elements which are constructed for attachment and removal by a robot and which may be machined to accommodate non-prismatic workpieces.

Abstract: A carrier for a flat photomask substrate having peripheral edges comprises a frame, a handle, a shaft, primary rings, and a spring. The frame has two ends, a periphery, and a shape with one side open. The handle has two ends and is journaled to one of the two ends of the frame. The shaft is provided through the one end of the frame and one end of the handle. This shaft allows the one end of the frame to pivot in a freely rotatable manner about the one end of the handle. The primary rings are arranged at the other end of the frame and at the one end of the handle. Such primary rings support the peripheral edges of the flat photomask substrate. The spring extends between the one end of the frame and the one end of the handle. This spring presses the primary rings into contact with the peripheral edges of the flat photomask substrate.

Abstract: A fixture for use in the non-encapsulated cross-sectioning of a composite structure. The fixture comprises a base having a ridge formed in the lower surface thereof for supporting the base on a grinding disc for cross-sectioning of the composite structure. The fixture further comprises a mounting member removably secured to that end of the base opposite the ridge. The mounting member extends outwardly from the base, and the composite structure is mounted on a front face of the mounting member. The front face of the mounting member has two contiguous but discontinuous surfaces on which the structure may be mounted. Either perpendicular or angled sections may be formed in the structure, depending upon which surface of the front face the structure is mounted.

Abstract: A vice in which the gripping surfaces are formed on a pair of blocks, each of which has a number of gripping surfaces. Each block is detachably mounted on the vice and may be replaced by another block and/or turned on the vice to enable two of a plurality of gripping surfaces to be brought into mutual opposition.

Abstract: A vise square device for use between the jaws of a conventional vise to engage an irregular or inclined workpiece under clamping force to firmly seat and secure the workpiece, comprises first and second engaging plates having confronting recesses for receiving a spherical element, and at least one resilient member secured between the plates to provide a unitary device, the resilient member being deformable to accommodate relative movement between the plates and the spherical element to allow multi-directional plate adjustment to accommodate workpieces of irregular or inclined configuration. Serrations are preferably provided on the article-engaging plate face for improved securement of a workpiece.

Abstract: A screw-type lifting clamp comprising a generally U-shaped clamp body having a pair of spaced, opposed projections defining a generally vertically downwardly facing material receiving slot, a lifting shackle attached to said clamp body, a screw threadedly received through a first such body projection and being threadedly movable toward and away from the second body projection, a jaw pivotally mounted to the second body projection for pivotable movement about a horizontal axis perpendicular to the screw axis, and resilient means urging the jaw to a horizontal position. The pivotable jaw includes vertically spaced teeth defining a gripping surface which is convex in a vertical plane and has a radius of curvature greater than the horizontal distance between the jaw pivotal axis and the jaw gripping surface when that jaw is horizontal.

Abstract: In a vise, such as now commonly used to hold a workpiece for drilling, cutting and finishing, the stationary main body is provided with a replaceable jaw member having a plurality of jaw faces, and the adjustible jaw body is formed as a jaw unit having a plurality of jaw plates. Both of the jaw member and the jaw unit are adapted to rotate so that any of the jaw faces and/or the jaw plates can be selected off-handedly in accordance with the kind and shape of a workpiece to insure an ideal grip of the piece.

Abstract: A first clamp jaw extends in prolongation of one clamping nose of a spring actuated pliers type clamp. A rod extends perpendicularly from the back side of the other clamping nose of the pliers type clamp. A second clamp jaw is slidable on said rod to receive workpieces of widely varying thicknesses between said two jaws.

Abstract: A vise which is constructed of three jaws which are movable to be clamped upon an exterior object, two of the jaws moving in synchronism in respect to another jaw located in a specific position. The movable jaw assemblies are located in an overlapping crossed arrangement. The configuration of the jaws can be altered to grasp not only objects of regular shape, but also objects of irregular shape.

Abstract: In a machine tool, particularly a milling machine, the workpiece vice is made up from a vice jaw member having a longitudinal track, and a plurality of insert members having profiled portions complementary to the track, so that a desired workpiece engaging profile may be built up from a plurality of insert members which are engaged with the track and fixed in position by locking means.