Abstract: Systems and methods for a dual sided clamp. More specifically, a clamp with a channel configured to receive a level on a first side of the clamp, and a triangular shaped cutout configured to receive a shaft associated with different sized valves on a second side of the clamp.

Abstract: A self-centering vise structure includes a vise body, a guide screw, a positioning unit, a first movable jaw unit, and a second movable jaw unit. The vise body is provided with a guide way. The positioning unit is provided with two fixed portions each provided with an elongate slot. The positioning unit is provided with two locking screws each extending through the elongate slot of each of the two fixed portions and is screwed into the guide way of the vise body. The elongate slot of each of the two fixed portions is moved relative to each of the two locking screws, and the positioning unit is moved relative to the vise body, to micro-adjust a central location of the self-centering vise structure.

Abstract: A clamp to retain a block of material on a machining table including a body having a first face, a first front face oriented toward the machining table and the block of material when in use, a nose projecting relative to the first front face having a second front face parallel to the first front face, first and second edges connecting the first and second front faces, and at least one internally threaded hole opening at least partly at the level of the second front face with an axis forming a non-zero angle with the first face and the second front face, at least one grub screw screwed into the internally threaded hole having a pointed free end configured to penetrate into the block of material when in use when screwing in the grub screw, and a connecting system to demountably connect the clamp to the machining table.

Abstract: According to the present invention, there is provided an ingot clamp including: a clamp body configured to have a holder mounting groove and a cavity; a fixing part configured to support and fix one side of an ingot holder inserted in the holder mounting groove; a movable fixing part disposed in the cavity and the holder mounting groove and configured to press and fix the other side of the ingot holder; a cover assembly coupled with the clamp body and configured to cover the cavity; and an air supply part coupled with the cover assembly and configured to supply air into the cavity.

Abstract: A compressing apparatus has a compressing jig and a pressing device. The compressing jig has a lower compressing assembly and an upper compressing assembly. The lower compressing assembly has a lower mount with at least one pitching plate and at least one limiting set. Each one of the at least one limiting set has multiple poles disposed around a corresponding pitching plate. Each one of the multiple poles has a top end higher than the corresponding pitching plate and a limiting indention disposed at the top end with a supporting portion disposed at a same height with the corresponding pitching plate. The upper compressing assembly has at least one clamping plate respectively aligned with the at least one pitching plate and being movable up and down. The pressing device has a base with a receiving space to receive the upper compressing assembly.

Abstract: Vise jaws are provided with base plates having bolt receiving holes or slots passing therethrough near top edges thereof. Soft jaws formed of a readily machinable material are provided with threaded bores which can receive bolts passing through the holes or slots in the base plates, the bolts also pass into the threaded bores to hold the soft jaws to the base plates. The soft jaws can be provided with a modified contour to match a geometry of a workpiece to be held. A locating pin can cooperate with alignment holes and alignment bores in the base plates and soft jaws for precise alignment of the base plates and soft jaws together. Adapters are also provided which can attach to surfaces of base plates and be rotated to present edges at a variety of different angles for supporting of workpieces in various angled orientations.

Abstract: A palette for an automated machining system includes a body, a plurality of fasteners configured to apply a force laterally to body to fasten the body to a receiver in the automated machining system, and a soft jaw mechanism connected to the body. The soft jaw includes one or more locking blocks that are anchors for a floating block and wedge block that apply a force to hold a workpiece at a reproducible location between the one or more locking blocks. The floating block is configured to not engage with the body, workpiece, or wedge block beyond friction and/or compressive forces.

Abstract: Disclosed generally is a quick change face plate for a vise.

Abstract: According to one aspect, a fixture for an airfoil shroud having a first end edge, a second end edge, a leading edge, a trailing edge, a radially outer side and a radially inner side with respect to a rotor axis of a bucket having the airfoil shroud is provided. The fixture includes a base plate, a first member extending from the base plate configured to locate and abut the first end edge, a second member extending from the base plate configured to locate and abut a side of a seal rail, a third member extending from the base plate configured to locate and abut the radially outer side of the airfoil shroud and a template recess formed in the base plate proximate the first end edge to define a geometry of a relief cut in the trailing edge of the airfoil shroud.

Abstract: A part fixturing system for securing a workpiece includes an expanding clamping device and a work holding device. The expanding clamping device includes a clamp base portion, first and second traversing wedge blocks, an actuation screw, and a clamp plate portion. The clamp base portion comprises a longitudinal recess, and the traversing wedge blocks are located inside the longitudinal recess, each block including an inclined contact surface and a threaded aperture. The actuation screw passes through the longitudinal recess of the clamp base portion and the threaded apertures of the traversing wedge blocks. The clamp plate portion comprises first and second declined contact surfaces. The work holding device comprises first and second support columns that define a longitudinal loading envelope. The expanding clamping device is positioned inside the longitudinal loading envelope of the work holding device and couples the workpiece to the first and second support columns.

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: A machine vice quick locking system being a machine vice unit with modified mounting blocks, each having a plurality of vertically inclined continuous hole spaces with the mid-space portion of each hole space being amenable to receipt of the nut portions of a plate-bolt-nut complex unit serving to quickly facilitate a locking fast of either one and ultimately both of a pair of equivalently sized jawplates to either of the anterior or posterior walls of either modified mounting block portion of the machine vice unit with each jawplate featuring a pair of horizontally inclined counterbored holes for receipt by each, of one bolt portion of each complex unit.

Abstract: A vise jaw insert system adapted to be mounted on a vise jaw including a plurality of attachment members, each attachment member having a head portion and a threaded portion, and a jaw insert member having a first workable surface and an opposing second workable surface, wherein the jaw insert member includes an insertion hole having a first cross-section shape and a different second cross-section shape extending from the first workable surface to the second workable surface.

Abstract: A machine vice quick locking system being a machine vice unit with modified mounting blocks, each having a plurality of vertically inclined continuous hole spaces with the mid-space portion of each hole space being amenable to receipt of the nut portions of a plate-bolt-nut complex unit serving to quickly facilitate a locking fast of either one and ultimately both of a pair of equivalently sized jawplates to either of the anterior or posterior walls of either modified mounting block portion of the machine vice unit with each jawplate featuring a pair of horizontally inclined counterbored holes for receipt by each, of one bolt portion of each complex unit.

Abstract: A jaws apparatus and method for using the jaws apparatus within a vise is described herein. A jaws apparatus may include a fixed jaw secured to the vise through an adapter. The adapter may have an adapter contact face and the fixed jaw may have a jaw contact face in slidable engagement with the adapter contact face. The adapter contact face may be comprised of a first physical material and the jaw contact face comprised of a second physical material. The first physical material and the second physical material may have substantially similar mechanical properties. The jaws apparatus may further include a movable jaw secured to a movable portion of the vise.

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 plate includes a plurality of equally sized holes arranged in a pattern and extending through a front side of the vise jaw plate which cooperate with dowel pins and work holders to position and support a work piece. Horizontally spaced mounting bores are arranged for cooperative alignment with vise jaw mounting holes to permit the attachment of the vise jaw plate to the vise jaw. The mounting bores include a first frustoconical portion, a second frustoconical portion and a straight bore portion joining the confronting narrow ends of the first and second frustoconcial portions. The mounting bores and the vise jaw mounting holes have offset center-lines that become coaxially aligned during attachment of the vise jaw plate to the vise jaw causing the vise jaw plate to become fully seated against a deck surface of the vise.

Abstract: A master jaw assembly used in a vise including a locking jaw, a detachable jaw and a clamping device disposed in the locking jaw, securely clamping the detachable jaw to the locking jaw. The locking jaw has a groove extending along an inner surface of the locking jaw defined by a first and second edge. The second edge is tapered inward and downward toward the base. The detachable jaw has a dovetail protrusion along one side surface thereof. The clamping device includes a plurality of specially-shaped clamp-nuts having a downwardly tapered edge, said clamp-nuts designed to receive one end of a double-ended threaded stud. The detachable jaw becomes fixed to the locking jaw by inserting the protrusion into the groove and torquing the studs to tighten the clamp-nuts downward against the protrusion such that the protrusion is clamped between the taper of the second edge and the clamp-nuts.

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: A master jaw assembly used in a vise including a locking jaw, a detachable jaw and a clamping device disposed in the locking jaw, securely clamping the detachable jaw to the locking jaw. The locking jaw has a groove extending along an inner surface of the locking jaw defined by a first and second edge. The second edge is tapered inward and downward toward the base. The detachable jaw has a dovetail protrusion along one side surface thereof. The clamping device includes a plurality of specially-shaped nuts having a downwardly tapered edge, said nuts designed to receive one end of a double-ended threaded stud. The detachable jaw becomes fixed to the locking jaw by inserting the protrusion into the groove and torquing the studs to tighten the nuts downward against the protrusion such that the protrusion is clamped between the taper of the second edge and the nuts.

Abstract: Jaw plates for removably attaching to the jaws of machine vises extend above the top of the jaw to hold taller workpieces. They are made from aluminum alloy for readily machining to conform to contours of a workpiece not easily held by flat jaw faces. They are sections cut from a special extrusion for enhanced physical properties and economy of production. Through holes are drilled for fastening to the jaw face. The plate has a planar vertical face for lying flat on the vertical jaw face. A second face engages the top horizontal face of the jaw. A groove between the two plate faces ensures the second face engages the horizontal face of the jaw away from the intersection of the faces. Alternatively, material on the plate may conform to the workpiece when hot and retain shape when cool.

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: A quick insert and release laser beam guard panel clamping apparatus having a base plate mountable on an optical table, a first jaw affixed to the base plate, and a spring-loaded second jaw slidably carried by the base plate to exert a clamping force. The first and second jaws each having a face acutely angled relative to the other face to form a V-shaped, open channel mouth, which enables wedge-action jaw separation by and subsequent clamping of a laser beam guard panel inserted through the open channel mouth. Preferably, the clamping apparatus also includes a support structure having an open slot aperture which is positioned over and parallel with the open channel mouth.

Abstract: A portable holder for supporting a ski, snowboard, bicycle and firearm during cleaning, maintenance, adjustment, sighting and repair operations at a work station, the holder being adapted to support a portion of the ski, snowboard, bicycle and firearm, the portable holder comprising: a base section adapted to be fixed to the work station in a substantially upright position; a threaded rod mounted to the base section in a substantially vertical orientation; and, one of a support bead and a vise assembly affixed to the upper portion of the threaded rod; wherein the base section contains a substantially vertically orientated threaded aperture allowing the threaded rod to be rotated about its longitudinal axis into the threaded aperture of the base section to permit both mounting of the threaded rod to the base section and height adjustment of the threaded rod relative to the base section; the support head having a base and at least one flange extending upwardly from the base to receive a support tongue of one of

Abstract: A fixture and method is provided for gripping an article, such as a sputtering target. The fixture comprises a base, a first set of contact rollers, and a second set of contact rollers, wherein at least one of the first set and the second set are adjustably positioned relative to the other of the first set and the second set on the base. The contact rollers can be configured as v-grooved wheels that will only touch chamfered portions of an outer diameter of the sputtering target when the contact rollers are clamped against the sputtering target. At least one of the first set and the second set of contact rollers can be pivotally mounted on a slide, with the slide being adjustably positioned on the base of the fixture.

Abstract: A clamp tool for woodwork or metalwork in which a screw mechanism is not apart away from a shaft and is not exposed is disclosed. In the clamp tool, a pair of clamping brackets is disposed on a shaft apart from each other and at least one clamping bracket is movable along the shaft to fasten a workpiece in cooperation with the other clamping bracket. Here, a female screw constituting a screw mechanism is disposed at one end of the shaft, a male screw constituting the screw mechanism is rotatable in a slide cylinder disposed outside at the end of the shaft so as to be screwed to the female screw, a handle for rotationally manipulating the male screw is disposed, and a guide portion is disposed between the shaft and the slide cylinder so that the female screw does not rotate but goes straight with the rotation of the male screw so as to allow the clamping bracket disposed outside the slide cylinder to move along the shaft.

Abstract: An elongate vise jaw plate assembly for mounting on a movable member of a vise is constructed to clamp many individual work pieces for machining. It enables clamping many pieces together in the vise even if their dimensions are not precise. It includes a base portion that is secured to a movable member of the vise. A work piece engaging portion is connected to the base portion by an elastic connector portion. The elastic connector and work piece engaging portions are slit into multiple segments, one for each work piece. Another work piece engaging portion is attached to a stationary member of the vise. Both work piece engaging members are machined to cooperate with work pieces. The work pieces are clamped between the two work piece engaging portions. Differences in the dimensions of the individual pieces are compensated for by the flexing of the connecting portions so that all the pieces are clamped securely for machining.

Abstract: A stand for movably supporting a workpiece is disclosed. The stand includes a base, a support and a plurality of roller assemblies. The support is releasably connected to the base for permitting the height of the stand to be altered. The roller assemblies are mounted on diverging surfaces which are in turn mounted at oblique angles relative to the support for permitting non-interfering movement of the workpiece relative thereto. Each roller assembly includes a sphere captured within a collar mounted on a selected one of the diverging surfaces for permitting free-rolling movement of the sphere relative to the collar and the workpiece.

Abstract: A quick change vice jaw plate arrangement includes jaw plates that may be rapidly secured to and rapidly removed from the opposing jaws of a vice. The jaws of the vice includes spaced jaw plate retainers which each carry a retaining pin. Each retaining is biased toward the face of the jaw and includes a relatively narrow shank and a relatively wider head. Each jaw plate has spaced retention recesses including a wide portion for receiving the head of the retaining pin, a detent portion for detaining the head of the retaining pin and a narrow portion for guiding it from the wide portion to the detent portion. A jaw plate may be quickly secured to a vice jaw by placing the wide portions of the retention recesses over the jaw plate retainers and sliding the jaw plate until the heads of the retainer pins seat in the detent portions of the retention recesses.

Abstract: A vise jaw assembly can be easily mounted on, and removed from, the jaws of a machine vise. A first reusable component bolts onto the face of a machine vise jaw. A second component is inexpensive and disposable. It is made by extrusion of an easily machinable material such as aluminum. It has a flat face that is designed to engage a flat face of the first component. It has an element extending from the flat face such as a dovetail element that slides laterally into a correspondingly shaped recess in the first component to complete a dovetail type joint. A slot below the recess in the first component is compressed by threaded fasteners to tighten the joint. The second component has a uniform cross section so that it may be produced by extrusion with minimal finishing except for cutting to length.

Abstract: A vise jaw assembly for supporting and securing an object to be worked upon in a vise is provided. The jaw assembly 10 has a block 14 with a plurality of apertures 16, a plurality of channels 40 passing through a portion of the block 14, a plurality of inlet holes 44, and a plurality of pins 48. Each pin 48 is located within an aperture 16 and is in slidable engagement with the aperture 16. The channels 40 can extend in a generally longitudinal direction of the block 14. Each channel has a first segment 42 in fluid communication with an inlet hole 44 and a second segment 45 in fluid communication with at least one aperture 16. At least one fluid passageway 46 extends from an inlet hole 44 to at least one aperture 16. Each pin 48 is independently deployable to a use position P1 and retractable to a non-use position P2. A plate 18 is secured to the rear surface 32 of the block 14 to enclose the channels 40.

Abstract: A compound soft jaw for use in a machine vise has a replaceable jaw member into which the templates of the workpieces are cut. The compound soft jaw has a primary jaw member secured to a receiving plate of the machine vice. The first secondary jaw member is secured to the primary jaw member. The first secondary jaw member is machined to have a cutting template formed therein such that as the workpiece is secured within the machine vise, the workpiece is machined according to the template. Upon completion of machining of the workpiece, the first secondary jaw member is replaceable by a second secondary jaw member into which a second cutting template is formed. The primary jaw member has a height less than a height of the receiving plate. The secondary jaw member is placed on the primary jaw member and is forced into contact with a surface of the receiving. The secondary jaw member is then supported by the receiving plate, which prevents the secondary jaw member from movement during securing the workpiece.

Abstract: A pliers having a replaceable gripping member for pliers jaws in the form of a threaded cylinder received in a threaded bore with part of the threaded cylinder extending out of the jaw in which it is mounted to provide a gripping surface formed of a segment of the threaded cylinder. The mating jaw has a recess to receive the projecting segment. A method of renewing the gripping surface includes rotating the threaded member to expose a different portion of the threads in the projecting segment, after removal of damaged threads in the projecting segment by filing the cylinder, if necessary. A hexagonal recess is formed in the end of the cylinder to enable installation, renewal of the segment and replacement of the entire cylinder using an Allen wrench. For non-sparking applications, the pliers are formed of aluminum bronze and the gripping member is formed of beryllium copper.

Abstract: A reversible jaw for a table vise including plurality of rows of apertures and cut-outs, all of predetermined size and location to allow manual and computerized machine operations to follow easily and precisely with reduced set-up procedure.

Abstract: A reversible jaw for a table vise including plurality of rows of apertures and cut-outs, all of predetermined size and location to allow manual and computerized machine operations to follow easily and precisely with reduced set-up procedure.

Abstract: A modular tooling apparatus for performing a metalworking operation on a workpiece, having a base comprising an attachment surface having a locating feature, a removable insert separably secured to the attachment surface, having a locating feature and a workpiece support feature on a surface thereof, and an extraction/locking device movable between a first position wherein the insert is secured to the attachment surface, whereby the locating feature of the insert associates with the locating feature of the attachment surface, and a second position wherein the insert is at least partially extracted from the attachment surface. The extraction/locking device alternately secures an insert to the base and assists in extracting the insert from the base. The device provides for ease of removal of an insert when the upper portion does not provide convenient surfaces for a technician to grab.

Abstract: A jaw is provided for a vise which includes a sloping surface for supporting a work piece at a particular angle. The jaw includes a primary mass and a secondary mass which are either formed together as a single unitary mass or formed separately and coupleable together. The primary mass includes a front surface which extends vertically and acts as a surface to hold the work piece within the vise. The secondary mass includes at least one sloping surface which is oriented perpendicular to the front surface of the primary mass. The sloping surface has an angle matching that desired for the work piece. A set of different jaws are provided with each jaw having a secondary mass with a sloping surface of a different angle. The work piece has a surface thereof resting against the sloping surface of the secondary mass of the jaw so that the work piece is held at the desired angle within the vise.

Abstract: An integral U-shape clamping block structure comprised of a clamping block and a fixation arm respectively extending rearward, and multiple fixation holes and screws being provided sideways on each fixation arm to be incorporated to both sides of a neck of jaw, thus to ensure the clamping strength and expanded width of a clamping surface to improve clamping capability, thus to facilitate combination or retrofit of the clamping block and the neck of jaw

Abstract: A vise stop for positioning a workpiece in a vise includes a crossbar having a first end, a second end and a mounting surface. The crossbar is attachable to the vise and a first stop arm is pivotally connected to the crossbar first end for positioning a workpiece along an X axis. In the preferred embodiment of the invention, a second stop arm is pivotally connected to the crossbar second end. A friction disc is compressively disposed between an inner face of both the first and second stop arms and the first and second ends of the crossbar. The friction disc allows the stop arm to be frictionally positionable and rotatable about its point of attachment to the crossbar end. The friction disc may be configured as a fiber washer, a spring washer or a compressible o-ring.

Abstract: An integral U-shape clamping block structure comprised of a clamping block and a fixation arm respectively extending rearward, and multiple fixation holes and screws being provided sideways on each fixation arm to be incorporated to both sides of a neck of jaw, thus to ensure the clamping strength and expanded width of a clamping surface to improve clamping capability, thus to facilitate combination or retrofit of the clamping block and the neck of jaw

Abstract: Vise jaw plates and matching work piece holders cooperate to reliably secure an odd-shaped object in a preferred orientation between the plates. At least one of a plurality of work piece holders are disposed throughout the jaw in a uniform orthogonal pattern with the plate holes precisely aligned in rows and columns and spaced apart a same distance such that a selected work piece holder with one or more mount posts matching the jaw holes is mountable equally well throughout the plate. The assembly of accessories includes a plurality of dowels, a pivot bar, a sine bar, a V-block, an arc block, a curvilinear side block, and a parallel keeper.

Abstract: A gripper or workpiece holder mounting bracket includes a center element and a pair of opposite end elements which are connectable to the center element via one or more fasteners. The mounting bracket defines a generally circular opening between the center element and one of the end elements and defines a second opening between the center element and other end element which has an arcuate or curved cross section, whereby a truncated spherical swivel member is pivotably secured therein when the bracket elements are secured together. The gripper or workpiece holder is pivotally secured within the generally circular opening, while the swivel member receives a generally cylindrical support structure therethrough. Adjustment of a clamping force at either or both of the openings of the mounting bracket may be accomplished via loosening of a single fastener.

Abstract: A compound soft jaw for use in a machine vise has a replaceable jaw member into which the templates of the workpieces are cut. The compound soft jaw has a primary jaw member secured to a receiving plate of the machine vice. The first secondary jaw member is secured to the primary jaw member. The first secondary jaw member is machined to have a cutting template formed therein such that as the workpiece is secured within the machine vise, the workpiece is machined according to the template. Upon completion of machining of the workpiece, the first secondary jaw member is replaceable by a second secondary jaw member into which a second cutting template is formed. The primary jaw member has a height less than a height of the receiving plate. The secondary jaw member is placed on the primary jaw member and is forced into contact with a surface of the receiving. The secondary jaw member is then supported by the receiving plate, which prevents the secondary jaw member from movement during securing the workpiece.

Abstract: The jaw assembly includes a master jaw and an insert jaw. An engagement surface on the master jaw provides a mounting surface for the insert jaw. The master jaw is contoured to provide a minimum of mass opposite the mounting surface and opposite the engagement surface to minimize the total rotating mass when the jaw assembly is in operation. In operation, a force is applied substantially perpendicular to the engagement surfaces between the insert jaw and master jaw such that the engagement surface experiences the force rather than the insert fastener.

Abstract: A chuck has a chuck body adapted to be rotated about a chuck axis and a plurality of elongated jaw arms angularly spaced about the axis, pivotal in the chuck body about respective guide axes extending secantally of the chuck axis, and axially slidable in the body. Each jaw arm has a front outer end formed with a generally axially extending and radially inwardly directed outer face and an axially outwardly and forwardly directed inner face extending radially inward from an axially inner end of the outer face. Each outer face converges axially outward with the chuck axis and forms a small acute angle with the chuck axis. Respective jaw inserts each have a pair of faces complementary to and flatly engaging the respective jaw faces. These inserts are releasably secured to the jaw outer ends with the insert faces bearing on the jaw faces. The faces are planar. In addition each insert is formed with at least one throughgoing hole extending substantially parallel to the outer insert face.

Abstract: A vise having a pair of vise jaws for clamping a workpiece. A rotatable protractor is provided in one of the vise jaws. A platform is carried by the protractor which extends beyond the vise jaw to support a workpiece. Worm drive gearing between the protractor and a manually-manipulable worm provides for rotating the protractor and the platform to a desired rotational position. A removable member may be connected to the platform. An adapter may be received on the platform to support the workpiece.

Abstract: A holding wrench includes a body having a first arm plate having a first end and a second end, and a second arm plate having a first end pivoted on the mediate portion of the first arm plate. A first holding assembly includes two first holding members each having a first end secured on the second end of the first arm plate and the second arm plate respectively, and a second end defining a snap recess. A second holding assembly includes two second holding members each having a threaded post selectively screwed into the first arm plate and the second arm plate respectively, thereby selectively securing the two second holding members to the first arm plate and the second arm plate respectively. The threaded post has a first end provided with an enlarged head, and a second end formed with an insertion stub.

Abstract: A vise having a pair of vise jaws for clamping a workpiece. A rotatable protractor is provided in one of the vise jaws. A platform is carried by the protractor which extends beyond the vise jaw to support a workpiece. Worm drive gearing between the protractor and a manually-manipulable worm provides for rotating the protractor and the platform to a desired rotational position. A removable member may be connected to the platform. An adapter may be received on the platform to support the workpiece.

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: Adaptors for interchangeably connecting any of a plurality of clamping fixtures to various beam clamp assemblies include an adaptor block or body, a fastener attached to the adaptor block for releasably securing the adaptor block to a jaw of a beam clamp assembly, and a connector on the adaptor block for releasably attaching a workpiece clamping fixture to the adaptor block.