Abstract: A clamp is provided that has a pair of clamp bodies which each have an inner surface. The inner surfaces of each clamp body are oriented to face one another in a spaced parallel relationship. A pair of parallel scissors linkages are coupled to the device that operate to move the clamp bodies in parallel relation relative to one another. Each scissors linkage extends from one side surface of one clamp body to a corresponding side surface of the other clamp body. A threaded rod is coupled to the pair of scissors linkages between the clamp bodies and is oriented with its axis of rotation parallel to the inner surfaces of the clamp bodies. The threaded rod is operable to move the clamp bodies either towards one another or away from one another in spaced parallel relation by rotation of the rod. By operation of the rod, the device may be used as either a clamping device or an expansion device.

Abstract: A self aligning clamp for fixturing two items of unequal thickness together in a stationary relationship in a vice device prior to joining the items together by welding or the like is disclosed. The self aligning clamping device has a fixed rigid lower jaw adapted to receive an underside of the two items of unequal thickness together in a stationary co-planar relationship, the lower jaw being disposed transversely to the vice device and further having a lower region adapted for releasable communication with a lower extent of the vice device, each jaw still further having a solid cylindrical shape for urging continuous, rigid, unbending contact communication with the upper side of each item.

Abstract: A pipe fitting apparatus for holding a pair of pipe fittings together such that the pipe fittings may be welded. The apparatus is designed for use by a single operator. The apparatus comprises a pair of handles interconnected by a conventional locking toggle apparatus and having first and second clamping jaws extending from the handles such that the first and second clamping jaws may be clampingly engaged with a first pipe fitting. A lower support extends from one of said clamping jaws and provides adjustable support for a lower portion of a second pipe fitting adjacent to the first pipe fitting. An upper support provides supporting engagement for a distal upper end of the second pipe fitting and includes an arm holder attached to one of the clamping jaws and a support arm slidably connected to the arm holder and which may be locked in a supporting position.

Abstract: A tool for supporting a rain gutter during its installation on a fascia board. The tool has a height-adjustable bracket and locking pliers with jaws having wide, flat working faces. Once several such tools are temporarily locked onto the lower edge of the fascia board, not only can they be used to support an elongated gutter but also each of the tools can be moved vertically without disturbing the pliers clamping it to the board, thereby making these tools especially handy for setting the height and slope of the gutter. For holding the adjustable bracket in position, each tool includes a mounting block which is rigidly attached to the back of a fixed jaw of the locking pliers and defines a pair of holes which extend parallel to the plane of the working face of the fixed jaw. The bracket is formed from an elongated rod bent to form an angular structure which terminates in a pair of parallel branches slideably insertable into the holes formed in the block.

Abstract: A dynamic self-adjusting dual-action clamp comprising a first clamping component defining a plane and generating clamping force along a first clamping axis in that plane, and a second clamping component generating force in a second clamping axis substantially perpendicular to the first clamping axis, but within the same plane as the first clamping axis. The invention further includes elements used to adapt a standard spring actuated pliers-type clamp to convert such clamp to the dual-action clamp described above.

Abstract: A bar clamp for single hand operation; includes a housing, a fixed jaw and a movable jaw mounted on one end of a slide bar for movement in a direction toward the fixed jaw. A spring-loaded driving key is secured on the slide bar and through operation of a trigger handle engages the slide bar for advancing the movable jaw toward the fixed jaw. A locking key is biased against the slide bar and normally engaged with the slide bar to prevent motion of the second jaw away from the first jaw and actuatable to disengage from the slide bar to allow advancement of the second jaw away from the first jaw. The trigger handle has one end pivotably mounted within the housing and formed with two lateral mounting plates of arched outer configuration. The housing is comprised of a first housing portion and a second housing portion, with at least the driving key and the locking key being accommodated within the housing.

Abstract: A portable light fixture uses a bar clamp which is operable with one hand and includes a fixed jaw and a movable jaw. The movable jaw includes a one-way drive mechanism, which releasably engages a slide bar and advances the movable jaw toward the fixed jaw, and permits clamping to be accomplished by application of clamping pressure through the one-way drive mechanism.

Abstract: A bar clamp apparatus having a pair of opposing clamp jaws, with one of the clamp jaws slidably joined to a handle member. The handle member and attached clamp jaw are slidably mounted on a bar. The clamp jaw attached to the handle member includes a pin which slidably engages a pair of corresponding slots or tracks in the handle member, to allow the clamp jaw to slidably move relative to the handle member. A knob has an attached threaded screw which passes through a threaded bore in the handle member with the end of the screw contacting the clamp jaw on the handle member. Rotation of the knob advances the screw and moves and applies pressure to the clamp jaw attached to the handle member. A workpiece is positioned between the clamp jaws, and the first clamp jaw is moved towards the second clamp jaw by rotating the knob to advance the screw thereby holding the workpiece between the clamp jaws.

Abstract: There is provided a multi purpose tool to assist in the repair and adjustment of eye glasses, the tool having a body portion and clamping member moveable into and out of a clamping relationship with the body, the clamping member being a wire like member. The tool is particularly useful for mounting the flexible type of temple having a spring member onto the main body of the eyeglass.

Abstract: A three-way spring clamp is provided that is useable as an edge clamp for applying clamping forces to workpieces in three directions. The clamp includes two lever arms, each having a jaw end and a handle end. The lever arms are pivotally connected to each other at a pivot point located between the jaw ends and the handle ends such that the lever arms can be moved between a closed gripping position in which the jaw ends are proximate to each other, and an opened position in which the jaw ends are spaced apart. A coil spring is provided for biasing the lever arms toward the closed gripping position. A spring engagement member is mounted between the lever arms. The engagement member includes a central body portion engageable with a surface of an article to be clamped. The body portion is positioned between the pivot point and the jaw ends and may have a generally concave configuration from the perspective of the pivot point when the lever arms are in the closed gripping position.

Abstract: A tool is disclosed in which components can be grasped and secured using a single actuation motion. A mechanical system converts a single actuation motion into sequential motions at least in part mutually orthogonal. The advantages of this system are one-handed operation and ability to accommodate variations in dimensions of the components to be secured in the tool. A particular device is disclosed which is used in the handling of human prosthesis components during surgery.

Abstract: A fast C-clamp comprises a generally C-shaped frame and a fixed jaw disposed in a front end of the frame. A fixed handle has an interior to receive a driving handle. The driving handle has an upper flange disposed on an upper end of the driving handle, a pivot hole and a rectangular hole formed on the upper portion of the driving handle. The driving handle and the fixed handle are fastened together. A holding seat is disposed in front of the fixed handle. A lower flange with a slot therein is disposed beneath the holding seat. A through hole is formed on the holding seat. The rear end of the frame is positioned in the slot. A round hole and a square hole are formed on the rear upper portion of the fixed handle. A shaft has a front end to connect a ball and a rear end to connect a holder. The ball is inserted in a rear portion of a movable jaw. A push plate with a circular hole thereon is disposed in the interior between a compression spring and the upper flange. A press plate has a center hole.

Abstract: An adapter plate for removable attachment to a U-shaped lower jaw of a set of toggle clamps is disclosed. The adapter plate is constructed of a rigid metal suitable for providing a backing for a joint to be welded by means of a MIG welding or arc welding process such as copper or brass. The plate is triangularly shaped and includes upper and lower broad flat surfaces, a base side and a pair of adjacent sides extending from opposite ends of the base side and intersecting at a predetermined angle to form an apex. The plate contains beveled edges for clearing the rounded inside cornters of a pair of angle iron workpieces when said workpieces are placed against one or more sides of the plate to be positioned relative to one another for being held by the clamps for welding the workpieces together or for other purposes.

Abstract: A patella milling instrument has a planar base with a fixed patellar clamping element formed thereon. A movable patellar milling element is slidably mounted on the base and is movable towards and away from the fixed clamping element. A drive element is operable between the base and the movable element for moving the movable clamping element. The drive element is actuated by a drive mechanism fixed in a handle of the device found at one end thereof and connected to a drive element which is also in the form of a ratchet element. A movable end mill type cutting element is mounted on a support arm supported by the base. The support arm is capable of movement in directions parallel to the plane of the base and is adjustable in a direction perpendicular to the base. The end mill has a drive shaft rotatably mounted in a bushing in an end of the support arm which drive shaft is rotatable by a power tool and capable of movement in a direction perpendicular to the plane of the base.

Abstract: A C-clamp has a generally C-shaped frame and a fixed jaw disposed in the front end of the frame. A connecting end and an adjacent rectangular shaped recess are disposed at the rear end of the frame. A square hole is formed at the center of the holding seat. A fixed handle which has a groove to receive a driving handle connects the holding seat. A hole on the driving handle and two corresponding holes on the fixed handle are passed through by a pin so that the two handles are fastened together. A square hole is formed on the fixed handle. A square spindle is inserted through the square hole of the fixed handle and the square hole of the holding seat. A spring and a pushing plate which has a square hole receives the spindle so that the spring and the plate are blocked by the holding seat. The flange which is disposed on the upper end of the driving handle pushes the pushing plate forwardly.

Abstract: The brake spring tool includes a shaft cooperative with a slotted collar. The slot may be fitted over the lead wire of the spring and the shaft tightly engaged against the lead wire to facilitate installation or removal.

Abstract: A C-clamp assembly has a fixed handle, a circular holding seat disposed in a front of the fixed handle, a driving handle inserted in an interior of the fixed handle, a push rod passing through the circular holding seat and the fixed handle transversely, a movable jaw disposed in a front end of the push rod, a generally C-shaped frame extending from the circular holding seat transversely, an elastic clamp device positioned on the generally C-shaped frame, and a fixed jaw disposed on a front end of the generally C-shaped frame.

Abstract: A hand tool containing a movable jaw mount, a slide bar wherein the movable jaw mount is mounted to the slide bar. A support assembly is provided for supporting the slide bar. A stationary jaw mount is spaced away from the support assembly. Interchangeable quick change jaws are mounted to both the movable jaw mount and the stationary jaw mount. Quick change jaws face each other for clamping operations and face away from each other for spreading operations. A two-way drive arrangement is designed having at least an engagement lever. A handle engages the engagement lever when the two-way drive arrangement is engaged, and disengages the engagement lever when the two-way drive arrangement is released. A support structure mount is mounted to the slide bar. A quick release support structure is mounted to the support structure mount providing free-standing capability.

Abstract: A bar clamp having a locking pliers, toggle action clamping mechanism is herein disclosed. The locking pliers includes a fixed handle, a movable handle, and a toggling linkage arrangement therebetween for toggling the locking pliers from a first open position to a second clamped position. An extension bar is connected at one end to the fixed handle. The bar clamp includes an adjustable outer clamping jaw slidably connected to the extension bar. The outer clamping jaw includes disengagable locking mechanism for disengagably locking the outer clamping jaw in any given position along the length of the extension bar. The bar clamp also includes an inner clamping jaw connected to the toggling linkage arrangement such that when the locking pliers are toggled into the clamped position the inner clamping jaw is caused to move toward the adjustable outer clamping jaw.

Abstract: A multi-purpose clamping apparatus to join the confronting edges of two boards together during a gluing process having a pair of base plates, a central hub about which the base plates may be rotated, a rail projecting laterally from the hub on which one of the base plates is connected and a press mounted on one of the base plates and engaging the rail for drawing the base plates together. Respective clamps overlie the upper surface of the base plates.

Abstract: Angle adjustable clamps are described which include a pair of jaws connected to pliers-type handles. At least one of the jaws includes two faces, and the angle between the faces is adjustable. The clamps are useful for gripping and supporting workpieces at a desired angle to each other.

Abstract: A fixture clamps a plurality of lids onto a multi-chip module (MCM) integrated circuit for adhesively attaching the lids to cover a plurality of cavities in the module in which chips or dies are mounted. The fixture includes a base plate which is formed with recesses in which the lids and the module are fittingly retained with the lids properly positioned relative to the module. A pressure plate is guided onto the module by a pin assembly and presses the module against the base plate. A plurality of spring loaded clamps have first jaws that engage with the lids through respective holes in the base plate and second jaws that engage with the pressure plate. The clamp thereby clamps the lids and the pressure plate to the module. The assembly including the module, lids, pressure plate and clamps is then removed from the base plate to enable curing of an adhesive that bonds the lids to the module, and frees the base plate for reuse.

Abstract: A releasable screed handle for being operatively secured to a selected screeding member to manipulate the screeding member through the various spreading and smoothing motions requisite in working concrete. The screed handle consists of an elongated handle that is pivotally affixed, at an angle of about 105.degree. from the vertical, to a lockable clamping plier that is capable of receiving and clamping a screed member of selected size and thickness.

Abstract: A pair of locking pliers includes a body having a fixed jaw that supports a fixed extension. A movable jaw is pivotably mounted to the body by a hinge pin, and the movable jaw includes a movable extension. An operating lever is pivotably mounted to the movable jaw to close the movable jaw, and the movable jaw is shaped such that the movable extension slides along the fixed extension as the movable jaw is pivoted closed with the operating lever in order to provide an axial clamping action.

Abstract: A method of using a brake spring tool which includes a shaft cooperative with a slotted collar. The slot may be fitted over the lead wire of the spring and the shaft tightly engaged against the lead wire to facilitate installation or removal.

Abstract: An improved bar clamp has a slide bar with a first jaw and a second jaw, the jaws set in opposing relationship along the slide bar. The first jaw may be advanced towards the second jaw by a setting mechanism that is removably attachable to the first jaw. The setting mechanism for advancing the first jaw has a hand lever and hand grip that act in concert upon manual squeezing to step-by-step advance the first jaw. The improved bar clamp also has a jaw comprising a body portion, bent along its length at an obtuse angle, which divides the body portion into an upper portion and a lower portion. A protective pad is attached to the upper portion near the end thereof on the same side of the body portion as the obtuse angle.

Abstract: An impactor/extractor holder for a femoral trial and/or a knee implant to hold and guide those items onto the resected end of a femur. The impactor/extractor holder comprises two opposed clamping arms for gripping the opposite outer edges of the trial and/or implant, and an abutment table movable relative to the clamping arms so as to be capable of being advanced against the outer surface of the trial and/or implant after the sides have been clamped by the clamping jaws. The abutment table has a cushioning surface for contacting the trial and/or implant which is adapted not to damage the outer surface of the implant or trail. A threaded mechanism is provided for moving the abutment table relative to the clamping jaws to advance the cushioning surface of the abutment table against the outer surface of the implant or the trial to securely and rigidly lock the trial or implant on the impactor/extractor holder. A trial rasp is also disclosed.

Abstract: A multi-purpose clamping apparatus to join the confronting edges of two boards together during a gluing process having a pair of base plates, a central hub about which the base plates may be rotated, a rail projecting laterally from the hub on which one of the base plates is connected and a press mounted on one of the base plates and engaging the rail for drawing the base plates together. Respective clamps overlie the upper surface of the base plates.

Abstract: A clamping device with a locking mechanism that is well known wherein the clamping jaws are modified so that they may be rotated around an axis extending between the clamping jaws. This allows opposing clamping jaws to be rotated to the side of the device thereby allowing clamping around corners and in crevice.

Abstract: A tool for both attaching and removing surgical scalpel blades safely from any standard surgical scalpel handle. The tool taking the form of hand held normally open pliers with an upper jaw including a clear protective cover and a protruding lower jaw. The lower jaw includes a recessed slot and two protrusions for accepting any scalpel blade. Closure of the upper jaw holds the tip of the blade in place while the protruding lower jaw holds the scalpel blade in place for either attachment or removal of the blade from the handle. An alternate embodiment of the tool especially designed as a single use disposable is also included.

Abstract: A vicing tool for internally gripping hollow bodies, in particular, those of a tubular nature, which comprises a body (1) created in two halves (1a, 1b) having two mating faces (2a, 2b) and angularly displaceable with respect to one another about a rotational axis (X) coincident with a common edge (4) of said faces as well as means (8) for imparting to said two halves of said body said angular displacement. From at least one side of said body a nose (12) extends formed by two elongated members (12a, 12b) having substantially semicylindrical lateral surfaces, extending from said two halves of said body and connected coplanarly to said faces. The nose (12) is composed of longitudinal concentric portions (13a, 13b, 13c 13d), of increasing diameter starting from its free end, and the rotational axis (X) is parallel and eccentric with respect to the longitudinal axis of said nose.

Abstract: A hand tool consists of a movable jaw, a slide bar wherein the movable jaw is mounted to the slide bar. A support assembly is provided for supporting the slide bar. A stationary jaw is spaced away from the support assembly and is provided with at least a front portion. A one-way drive arrangement is designed having at least a driving lever. A cam having a longitudinally extending handle is pivotally mounted at the support assembly and contacts the driving lever. The cam disengages the driving lever when the one-way drive arrangement is released from the slide bar, and the cam engages the driving lever when the one-way drive arrangement engages the slide bar.

Abstract: A C-clamp including a grip fixed to a body, a rod laterally extended through the upper end of the grip and extended into the body, a rack formed in the rod, a handle having an upper end pivotally coupled to the grip, a pawl pivotally coupled in the upper end of the handle for engagement with the rack, a catch disposed in the grip and engaged with the rack for preventing backward movement of the rod, whereby, the rod is pushed forward when the handle pulled toward the grip, and the rack is disengaged from the pawls when the rod is rotated.

Abstract: A hydraulically operated device including a single-acting cylinder having a piston for operating a working tool, a pressure chamber for applying a hydraulic pressure to the piston from an original position to an operated position, and a return spring for biasing the piston toward the original position. The device includes a hydraulic pump for delivering a pressurized fluid to be fed into the pressure chamber of the cylinder, and an automatic drain valve for inhibiting the pressurized fluid from being discharged from the pressure chamber while a difference by which a delivery pressure of the pump is higher than a pressure in the pressure chamber exceeds a predetermined value. When the difference becomes smaller than the predetermined value, the automatic drain valve is operated to allow the pressurized fluid to be discharged from the pressure chamber. Thus, the automatic drain valve automatically drains the pressure chamber when the pump is turned off.

Abstract: A plier-like tool having links added between the jaws and the body of the pliers. The links not only extend the length of the jaw side of the pliers, but also pivot relative to each other and perpendicular to the opening and closing direction of the pliers. The screws in these links can be left untightened to permit the links to pivot allowing the jaws to gain access into restricted areas otherwise inaccessible. Even with the link-screws loose the gripping force is transferred through the links to the jaws enabling the user to still grip objects or even retrieve them by simply pulling the pliers back out and letting the links follow. An additional aspect to the flex-link pliers is that the link-screws can be tightened so the links maintain their position relative to each other so the user can create any shape pliers desired.

Abstract: A lever lock hold down mechanism for clamping workpieces to a miter gauge is disclosed as including a workpiece supporting base or bar and a generally vertically directed workpiece supporting head extending upwardly from the base or bar. Extending further upwardly from the workpiece supporting head is a clamping frame having a vertically adjustable clamping rod slidably mounted to the frame and also having a clamping foot at its lower end. A spring biased apertured gripper plate is mounted over the rod in the vicinity of the clamping frame, and a lever lock is pivotally mounted to the clamping frame for engaging and disengaging the apertured gripper plate relative to the clamping rod.

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: Substrate handling apparatus includes a trigger handle which forms a trigger-like mechanism with a handle grip. The trigger handle is interconnected with activation means such that application of pressure on the trigger handle activates the activation means.

Abstract: An improved C-clamp has a clamp body and a detachable setting mechanism. The clamp body has inner and outer legs with a hollow bore in the inner leg to allow passage of a stem having a work-engaging pad on its end therethrough toward an aligned fixed work pad on the outer leg. The setting mechanism for advancing the stem has a hand lever and hand grip that act in concert upon manual squeezing to step-by-step advance the stem. The setting mechanism removably attaches to the clamp body by a spring-biased lever that grips attachment pins on the body. A latch lever positioned on the inner leg of the clamp body causes a retaining lever to grip the stem when the latch lever is closed and to allow the stem to move freely when the latch lever is open.

Abstract: A spring stretcher for stretching furniture springs, such as no sag springs, commonly found in sofas, lounge chairs and the like. This spring stretcher stretches a replacement spring in an obstructed environment, thus will stretch a replacement furniture spring without having to remove the upholstery from the piece of furniture. The spring stretcher includes a ratchet mechanism having a barrel threadably attached to one end of the ratchet mechanism and a telescoping rod is inserted through the opposite end of the ratchet mechanism which passes through the ratchet mechanism and is fed into the barrel. A hook is fastened to the end of the barrel opposite its threadably attached end and another hook is fastened to the exposed end of the telescoping rod. The hooks rotatably fastened to the device further enhance its application in a confined area. The spring is secured at each end to one of each of the hooks. As the ratchet mechanism actuates the telescoping rod, the two hooks diverge to stretch the spring.

Abstract: A plastic protective gripping member or guard fits on the jaw of a Vise-Grip type locking wrench whose jaws have lateral protuberances at their tips. The gripping member can be in a form of a block or cup having a slot with internal recesses on each side wall. The gripping member fits onto the jaw and permits swiveling about a transverse axis. The gripping member is installed by pushing it onto the jaw tip and twisting it 90 degrees. Nylon is a perferred material because of its comparatively high coefficient of friction even when wet or oily. The gripping surface can be concave, ridged, or flat.

Abstract: A hydraulically operated device including a single-acting cylinder having a piston for operating a working tool, a pressure chamber for applying a hydraulic pressure to the piston from an original position to an operated position, and a return spring for biasing the piston toward the original position. The device includes a hydraulic pump for delivering a pressurized fluid to be fed into the pressure chamber of the cylinder, and an automatic drain valve for inhibiting the pressurized fluid from being discharged from the pressure chamber while a difference by which a delivery pressure of the pump is higher than a pressure in the pressure chamber exceeds a predetermined value. When the difference becomes smaller than the predetermined value, the automatic drain valve is operated to allow the pressurized fluid to be discharged from the pressure chamber. Thus, the automatic drain valve automatically drains the pressure chamber when the pump is turned off.

Abstract: A tool arranged for the testing of automotive components, such as ball joints, is provided to include a handle pivotally mounted to an "L" shaped positioning leg. The positioning leg includes an upper cylinder mounted to the leg to receive a stud portion of a ball joint therethrough, with the lower cylindrical member defining a cup to receive a lowermost portion of a ball joint therewithin to permit pivotment of the "L" shaped leg relative to a handle pivotally mounted through the "L" shaped leg indicating deflection of a ball joint when the handle is pivoted relative to the "L" shaped leg. A modification of the invention includes magnetic insert members, each including parallel support legs to receive opposing ends of a shock absorber such as a gas-filled shock absorber to indicate resistance and deflection of the shock absorber in use.

Abstract: A picture framer's tool of the type used to drive brads into picture frames shown in U.S. Pat. No. 4,763,825 is modified so that it may also be used as a clamp. The tool has two jaws, namely an inner adjustably positioned along a sleeve and a second jaw on the outer end of a rod reciprocable within the sleeve and extending beyond the outer end of said sleeve. The tool has a lever pivoted on a handle which causes the rod to reciprocate. One improvement is the provision of a wing screw or other fastener on the handle which engages the rod so that it is fixed in position. Another improvement is the provision of attachments for each jaw, one of which may be spring-loaded. Attachments include hammer heads, points, swivels and the like.

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: The present invention relates to a system, teaches a technique, and provides apparatus eminently useful for the installation/removal, from a remote and protected location, of nozzle dams onto and from nozzle holddown rings within the channel heads of certain steam generators, including the types typically used in conjunction with the operation of pressurized hot-water nuclear power plants.

Abstract: A bar clamp having a fixed jaw and a movable jaw which is radially movable over both short and long distances to clamp against a workpiece and is operable using one hand with complete control by the operator at all times. The jaws may either face one another while being mounted on the same side of a handle/grip assembly or face in opposite directions while being mounted on opposite sides of the handle/grip assembly whereby they may be incrementally advanced by the trigger handle/driving lever.

Abstract: A double jawed locking hand vice is provided which comprises a gripping means for securely holding a tubular member and a securing means for securing a nut of preselected size and shape against rotation with respect to the tubular piece when the tubular piece and the nut are held concentrically disposed with respect to one another within the vice.

Abstract: A stepping type expansion bolt extracting gun, making use of a shifting mechanism to shift a gun barrel by means of a stepping operation, and an arresting and releasing mechanism to prevent the gun barrel from returning. A check plate is provided to control the gun barrel to shift back to the original position. By means of said arrangement, the present invention is applicable to extract the live spindle of an expansion bolt in a labor-saving and most efficient way to replace the linking rod type actuation of the prior art.

Abstract: A bar clamp, which is operable with one hand, includes a fixed jaw and a movable jaw. The movable jaw connects at one end to a movable slide bar. One-way drive means, by operation of a trigger handle grip, releasably engages the slide bar and advances the movable jaw toward the fixed jaw. Return motion of the movable jaw is accomplished manually when the one-way drive means is disengaged. A braking lever, biased to bind against the slide bar, prevents reverse motion of the movable jaw except when disengaged from the slide bar. The trigger handle advances the slide bar by driving a second lever which binds against a slide bar surface. The second lever returns by spring force to its original position after each stroke of the trigger handle.