Abstract: A wrench has a driving head segment defining a portion of a receiving space of the wrench and including a first driving side of the wrench. The driving side includes a plurality of driving sections for abutting against the object. The plurality of driving sections includes surfaces aligned along an axis. The driving side includes a plurality of first recesses disposed alternatively among the plurality of first driving sections.

Abstract: A modified basin wrench including an elongated rod assembly, wrench head assembly, handle assembly, and a pivoting assembly is disclosed herein. The wrench head assembly is modified in a way to allow the user to fasten and/or loosen the water supply locknut and faucet shank nut simultaneously. The modified basin wrench further includes a handle assembly that is hingedly attached to the wrench head assembly by a pivot assembly in order to help the user grasp the faucet nut at a comfortable angle in hard to reach places. Furthermore, this can allow the user to fasten and loosen the water supply locknut and/or faucet shank nut without having to lie down. The modified basin wrench also includes a handle assembly that can be used to adjust the grip of the tool and allows the user to operate the wrench with one hand.

Abstract: An electronic device assembling apparatus has a cable holder and a lock member operator. The cable holder holds a cable and inserts the cable into a connector. After the cable is inserted into the connector by the cable holder, the lock member operator operates a lock member to lock the cable to the connector. The lock member operator starts an operation with respect to the lock member in a state where the cable inserted into the connector is held by the cable holder.

Abstract: An insulating ratchet driver with pivoting head has: a handle, a spring, a pressing knob, a driving head and a pivoting member. The pivoting member is provided with a cover made of an insulating material. All metal portions of the handle, the pressing knob and the driving head are coated with an insulating layer.

Abstract: A jig and method useful for coupling and/or uncoupling drill string sections. In some embodiments, the jig comprises a body having an outer surface for engaging a torqueing tool and a cavity extending from a first end to a second end of the body and an engagement means at the first end of the body. The engagement means may be dimensioned to non-rotationally engage an outer surface of a first end of a drill string section and the cavity may be sized to fit about a drill string section.

Abstract: The present invention relates to an adjustable wrench. The adjustable wrench comprises a handle part, a curved jaw part, a linkage part, an adjusting element and a restoring element. The handle part comprises a toothed portion. The curved jaw part is pivotally connected to the handle part. When the adjusting element is pushed by an external force, the adjusting element further moves the linkage part simultaneously, and the linkage part pulls the curved jaw part to rotate so as to adjust a size of an opening between the curved jaw part and the toothed portion. Accordingly, the present invention has advantages and effects of fast and simple adjustment for use and a lever arm thereof being adjustable for labor saving, etc.

Abstract: An adjustable spanner wrench which maintains a predetermined engagement position. The spanner wrench has a rotatable engagement arm attached to a body, wherein the engagement arm is discouraged from rotating in an opening direction unless released. The spanner wrench has a body, an engagement arm, and a release mechanism which allows or prevents rotation of the engagement arm respective to the body in the opening direction.

Abstract: In one embodiment, a valve wrench for rotating a knob may include a handle and a jaw assembly coupled to the handle. The jaw assembly may include a fulcrum member, a hook member and a bias member. The hook member may be pivotably coupled to the fulcrum member and may be aligned to the fulcrum member at a pivot angle. The fulcrum member and the hook member can form an opening there between to accept the knob. The bias member may be disposed between the fulcrum member and the hook member to bias the hook member towards the fulcrum member when the jaw assembly is engaged with the knob.

Abstract: In one embodiment, a valve wrench for rotating a knob may include a handle and a jaw assembly coupled to the handle. The jaw assembly may include a fulcrum member, a hook member and a bias member. The hook member may be pivotably coupled to the fulcrum member and may be aligned to the fulcrum member at a pivot angle. The fulcrum member and the hook member can form an opening there between to accept the knob. The bias member may be disposed between the fulcrum member and the hook member to bias the hook member towards the fulcrum member when the jaw assembly is engaged with the knob.

Abstract: A wrench includes a handle, and a driving unit pivotally mounted on the handle. The handle has an end portion provided with a support surface. The driving unit includes a first jaw having a first end pivotally mounted on the end portion of the handle, and a second jaw having a first end pivotally connected with a second end of the first jaw and a second end that is movable to abut the support surface of the handle and the first end of the first jaw. Thus, the second end of the second jaw abuts the support surface of the handle tightly and closely so that the force applied by a user is transmitted to the wrench directly so as to drive the wrench to operate the workpiece in an energy-saving manner.

Abstract: The invention relates to a manual wrench for actuating cylindrical elements. The inventive wrench comprises a fixed jaw (1) and a moving jaw (3) which are disposed on one end of a handle (2), whereby the fixed jaw (1) is secured with a transverse keyed assembly. The invention also includes an elastic pin (5) which extends through said keying. Moreover, the face of the fixed jaw (1) that faces the moving jaw (3) is equipped with a toothed section (7) comprising identical teeth which extend along a curved zone such as to define a single arc.

Abstract: A pair of pliers include a shank, a fixed jaw locked onto the shank, and a movable jaw pivotally mounted on the shank and movable relative to the fixed jaw. Thus, the first contact point of the locking teeth of the fixed jaw and the second contact point of the first engaging teeth of the first toothed face of the movable jaw have a larger friction with a workpiece by a special angle design of the fixed jaw and the movable jaw to enhance the clamping force of the fixed jaw and the movable jaw on the workpiece, so that the workpiece is clamped by the fixed jaw and the movable jaw exactly and closely to prevent the workpiece from being slipped from the fixed jaw and the movable jaw during operation of the pliers.

Abstract: A wrench capable of engaging a workpiece from the side or top. When the workpiece is engaged on the side, a movable jaw opens when a slight pressure is applied against a flat or a point of the nut or bolt. After the jaws of the wrench have pushed past the workpiece, a pin and spring mechanically return the moveable jaw to its closed position. In its closed position, the workpiece is retained by the jaws in the proper seat position. When tightening or loosening the workpiece, the direction of the pull is towards the fixed jaw. Disengagement between pulls is accomplished by turning in the opposite direction of pull. The wrench rides over the points of the workpiece and automatically reseats itself.

Abstract: A tool is provided for rotating a locking sleeve that is concentrically mounted on a plug between locked and unlocked conditions relative to a socket to which the plug is connected, including a tool body containing a recess within which is rotatably supported a driving disk, and a clamping arrangement that clamps the tool body to the locking sleeve such that a circumferential portion of the driving disk protrudes outwardly from the recess into frictional engagement with the peripheral surface of the locking sleeve. Consequently, upon rotation of the driving disk by an operating shaft, the locking sleeve is rotated relative to the socket.

Abstract: In a rotatively operating tool, a lever (5) having a head (4) at its tip end is turnably connected to a handle (6) provided at its tip end with a lower jaw (12). The head (4) is provided with an upper jaw (7) brought into engagement with an engaging surface (2a) of a bolt head (2). A spring (14) is mounted between the lever (5) and the handle (6) for biasing the lever (5) to turn it in a direction of abutment of a stopper face (11) of the lever (5) against the handle (6). When the handle (6) is turned in one direction, the lower jaw (12) at the tip end of the handle (6) is brought into abutment against an engaging surface (2b) of the bolt head (2), whereby the bolt head (2) is clamped between the lower jaw (12) and the upper jaw (7). When the handle (6) is turned in an opposite direction, it is brought into a state in which the clamping of the bolt head (2) is canceled.

Abstract: A Pipe Wrench with: reasonable coordination on distance between—Center of Arcuate Teeth and Link-Hole, eccentric length of Tips of Arcuate Teeth and Link-Hole; Instant Grip and Release, Time-Saving, Power-Saving, easy Operation is disclosed. It is composed of Heading-Hook, Main Body, Arcuate Jaw-Block, Spring-Guard Plate, Spring, Oil-Rope, Pin and Screw Bolt. The Jaw-Block designed by two (2) different sizes of Arc is inlaid in Slot B on Handle, due to designed size of Link-Hole being eccentric from center of Arcs of Jaw-Block is well coordinated with Arcs on Tip Teeth of Jaw-Block, which enables this Invention with Reliable and Firm Self-Lock on workpiece as well as its Open-Width being enlarged.

Abstract: A movable jaw holding device includes a handle having a fixed jaw member holding a first rod member. A movable jaw member is pivoted to the handle by a pivot and holds a second rod member. A C-shaped retainer fastened to the shank of the pivot secures to secures the pivot to the handle and the movable jaw member. A spring member mounted on the pivot and stopped between the fixed jaw member and the movable jaw member is well protected by the head of the pivot and a cushion ring at one end of the pivot.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: A self-adjusting wrench having a handle and a jaw member rotationally attached thereto. A smoothly curved handle face opposes a planar face on the jaw member which adjusts for distance from the curved handle face by following a generally circular path around a pinned attachment of the jaw member to the handle. A spring or similar biasing device continuously urges the jaw member toward the handle thereby making the device self adjusting to the size of the object placed between the jaw member and the curved handle surface.

Abstract: A hand tool for tightening or loosening a threaded cylindrical member relative to a corresponding threaded socket, including a generally rectangular wrench body which contains a generally circular opening for coaxially receiving the cylindrical member, a generally disk-shaped locking cam that is moveably connected with the wrench body for displacement between extended and retracted positions extending within and withdrawn from the circular opening, respectively, thereby clamping the threaded cylindrical member when the locking cam is extended into the circular opening, and a handle member operable when the cam is in the extended position to rotate the wrench body with the cylindrical member clamped thereto relative to the threaded socket.

Abstract: A ratchet wrench for turning threaded fasteners, particularly fasteners threaded on a stud or pipe located in areas of limited or obstructed access to the fastener. The wrench is operated remotely at an end of the wrench away from a fastener engagement portion. The wrench includes a side mounted actuator assembly which allows a moveable jaw to open and close around the fastener. A closing bias force is maintained on the movable upper jaw by a spring included in the actuator assembly. The closing bias force allows a fastener to be held in position for rotation and when exceeded, allows the movable upper jaw to ratchet around the fastener. The engagement portion of the wrench may be configured with either a hexagonal or dodecahedral shaped opening. When operatively engaged with the fastener, the wrench fully encompasses the fastener to limit slippage.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: A ratchet wrench for turning threaded fasteners, particularly fasteners threaded on a stud or pipe located in areas of limited or obstructed access to the fastener. The wrench is operated remotely at an end of the wrench away from a fastener engagement portion. The wrench includes a side mounted actuator assembly which allows a moveable jaw to open and close around the fastener. A closing bias force is maintained on the movable upper jaw by a spring included in the actuator assembly. The closing bias force allows a fastener to be held in position for rotation and when exceeded, allows the movable upper jaw to ratchet around the fastener. The engagement portion of the wrench may be configured with either a hexagonal or dodecahedral shaped opening. When operatively engaged with the fastener, the wrench fully encompasses the fastener to limit slippage.

Abstract: A hand tool for tightening or loosening a threaded cylindrical member relative to a corresponding threaded socket, including a generally rectangular wrench body which contains a generally circular opening for coaxially receiving the cylindrical member, a generally disk-shaped locking cam that is moveably connected with the wrench body for displacement between extended and retracted positions extending within and withdrawn from the circular opening, respectively, thereby clamping the threaded cylindrical member when the locking cam is extended into the circular opening, and a handle member operable when the cam is in the extended position to rotate the wrench body with the cylindrical member clamped thereto relative to the threaded socket.

Abstract: Bottle cap removal device with an opening therein to receive a bottle cap, including a top and a base which combine to provide an envelope for the bottle cap removal device and including an annular member and a surface opposed to the annular member operative to apply increased gripping forces on the bottle cap upon relative rotation between the annular member and bottle cap, thereby efficiently removing the bottle cap.

Abstract: A pivoting jaw pipe wrench comprises a fixed jaw including a plurality of discrete teeth, each for a different one of a plurality of pipes having different diameters. A pivotal jaw member has first and second jaw faces at an obtuse angle to one another and displaceable toward and away from the fixed jaw, whereby a pipe of given diameter to be gripped by the wrench is cradled between the first and second jaw surfaces and engaged by the one of the discrete teeth provided on the arcuate jaw for the pipe of given diameter.

Abstract: An automatically adjusting self tightening wrench having a handle and a jaw member rotationally attached at an attachment of the handle opposite the end gripped by a user. A curved handle face opposes a planar face on the jaw member which is adjustable for distance from the curved handle face by following a generally circular path around a pinned attachment to the handle. A spring or similar biasing device continuously urges the jaw member toward the handle thereby making the device automatically adjustable to the size of the object placed therein by moving the planar surface of the jaw around the curved handle face until it reaches a point distant from the curved handle face wherein it will accommodate the size of the inserted object. A thumb activated release of the bias is provided by a surfaced area on the jaw member for the user to move the jaw opposite the direction of the bias with a finger or thumb and thereby release the engagement with the object between the jaw member and the curved handle face.

Abstract: A wrench includes a fixed jaw formed on one end of a handle, a pivotal jaw pivotally secured to the handle and having one end for engaging with a fastener. The pivotal jaw has a middle cavity for receiving a spring-biased engaging member which may engage with the handle to force the pivotal jaw toward the fixed jaw. The fixed and the pivotal jaws each includes a flat engaging surface and a notch for alternatively engaging with the opposite flat surfaces and the opposite corners of the fastener and for allowing the handle to be rotated for only thirty degrees relative to the fastener.

Abstract: A wrench includes a fixed jaw formed on one end of a handle, a pivotal jaw pivotally secured to the handle and having one end for engaging with a fastener. The pivotal jaw has a middle cavity for receiving a spring-biased engaging member which may engage with the handle to force the pivotal jaw toward the fixed jaw. The fixed and the pivotal jaws each includes a flat engaging surface and a notch for alternatively engaging with the opposite flat surfaces and the opposite corners of the fastener and for allowing the handle to be rotated for only thirty degrees relative to the fastener.

Abstract: A Pipe Wrench with: reasonable coordination on distance between-Center of Arcuate Teeth and Link-Hole, eccentric length of Tips of Arcuate Teeth and Link-Hole; Instant Grip and Release, Time-Saving, Power-Saving, easy Operation is disclosed. It is composed of Heading-Hook, Main Body, Arcuate Jaw-Block, Spring-Guard Plate, Spring, Oil-Rope, Pin and Screw Bolt. The Jaw-Block designed by two (2) different sizes of Arc is inlaid in Slot B on Handle, due to designed size of Link-Hole being eccentric from center of Arcs of Jaw-Block is well coordinated with Arcs on Tip Teeth of Jaw-Block, which enables this Invention with Reliable and Firm Self-Lock on workpiece as well as its Open-Width being enlarged.

Abstract: A screwing tool has a handle and a clamping hoop, which is mounted pivotably on the handle at one end and is bent in the form of a partial circle at its other end, which is remote from the handle. A stop for the clamping hoop is secured on the handle on the concave side of the clamping hoop. A return device on the handle presses the clamping hoop against the stop. An actuating member is held by the handle and the free end of which lies opposite to and at a distance from the concave side of that end of the clamping hoop which is bent in the form of a partial circle.

Abstract: An open-end wrench includes a main body, a movable jaw plate, and a recovery element. The main body is provided at two longitudinal ends with a slot in which the movable jaw the plate is pivoted. The swiveling of the movable jaw plate is confined by a pin in conjunction with a position confining hole. The recovery element is located between a locating portion of the slot and a fastening portion of the movable jaw plate for providing the movable jaw plate with a recovery force.

Abstract: A wrench includes a handle with a first jaw and a protrusion respectively extending from an end thereof. A surface is connected between the protrusion and the first jaw. A pivotal member is pivotally connected to the protrusion and has a groove defined in a periphery thereof so as to receive the protrusion and the surface. A second jaw extends from the pivotal member and an end plate ends the groove. A spring biases between the end plate and the surface. The width between the first jaw and the second jaw can be adjusted by pivoting the pivotal member.

Abstract: A wrench for applying a force to a work piece comprises a handle having proximal and distal ends, top and bottom edges and a slot extending therethrough with a groove extending downward from the slot. A fixed jaw is mounted at the distal end of the handle having an inner, contact surface for contacting the work piece, and a moveable jaw is pivotally mounted at the distal end of the handle having an inner, contact surface for contacting the work piece. A spring is mounted in the handle having a distal end in contact with the moveablejaw for biasing the moveable jaw toward the fixed jaw. A slidable button is mounted on the top edge of the handle, with a spring mounted between the slidable button and the top edge of the handle. A connector is provided having a distal end fixedly attached to the moveable jaw and a proximal end fixedly attached to the slidable button by a pin. In operation, the pin rides in the slot and fits in the groove.

Abstract: The invention relates to an open-end wrench having a clamping jaw which is rigidly connected to a wrench handle in a fixed manner. A spring-loaded, moveable clamping jaw is pivotally mounted on the fixed clamping jaw. A recess, which recoils opposite the plane of the clamping surface, is connected to the clamping surface of the fixed clamping jaw on the gripping side. The moveable clamping jaw has a recess located in the area between the clamping surface of the jaw and the pivot point thereof. In an opened state of the wrench, said recess approximately corresponds to the recess behind the fixed clamping jaw. The wrench can be handled similarly to a fixed open-end wrench, whereby it enables a ratcheting action and has a self-clamping operation.

Abstract: A self-clamping wrench has one fixed clamping jaw, which is rigidly connected to a handle and one mobile clamping jaw, which is mounted thereon in such a way that it can turn. A hand lever is located on the handle on the same side as the mobile clamping jaw. A leaf spring, which is fixed on the hand lever, acts upon the mobile clamping jaw and when the hand lever is closed, forms a tension spring which pushes said clamping jaw into its closed position. When the hand lever is released, the leaf spring acts as a lever spring, which opens the hand lever and the mobile clamping jaw.

Abstract: A spanner includes first and second clamping members. The first clamping member has a handle portion and a first jaw portion with a pivot plate portion that has a first pivot hole formed through top and bottom surfaces thereof. The second clamping member has a second jaw portion and a pair of pivot lobes which cooperatively define a receiving space therebetween to permit the pivot plate portion to extend thereinto and which are formed with second pivot holes aligned axially with the first pivot hole. A pivot shaft extends through the first and second pivot holes for mounting pivotally the second clamping member on the first clamping member. A torsion spring is sleeved on the pivot shaft, and is disposed in the receiving space for biasing the second jaw portion to move toward the first jaw portion.

Abstract: A self-locking wrench includes a movable jaw which can be moved by a manual actuator. Motion of the actuator is transmitted to the movable jaw by a leaf spring. When moving the movable jaw toward an open position, the leaf spring becomes deformed and stores energy so as to be able to subsequently drive the movable jaw toward a closed position when the actuator is released.

Abstract: A self-adjusting ratcheting wrench has an elongated handle terminating at one end in a fixed jaw, a movable jaw pivotally attached to the handle so as to close on the fixed jaw and terminating at one end in a pair of jaw faces forming an obtuse angle and separated from one another by a lateral groove and at the other end in a tail, the pivotal attachment being disposed between the tail and the jaw faces, an actuator arm pivotally attached at one end to the tail and at the other end in a thumb plate and connected therebetween to the handle so that the actuator arm is laterally offset from and longitudinally slidable along the handle, a leaf spring disposed in and pivotally attached to the handle, and a coil spring disposed in the handle so as to urge the leaf spring against a convex camming surface formed on the movable jaw adjacent the tail, whereby torque applied to the handle in a first direction causes the jaws to close on an element contained therebetween so as to apply the torque to the element, torque a

Abstract: A ratcheting open-ended wrench has a movable jaw pivotally attached to a fixed jaw. The jaws define an opening capable of receiving the hexagonal head of a fastener such as a nut, bolt, hose fitting or pipe fitting. The fastener may be turned by moving the handle of the wrench back and forth without disengaging the fastener from the opening. A stop prevents the movable jaw from moving in a way which would place excessive stresses on the movable jaw. An arc shaped bearing surface on the movable jaw is received in a mating bearing surface on the fixed jaw. The combination of the stop and the mating bearing surfaces greatly reduces shear forces on the pivot. The point about which the movable jaw pivots is located forwardly relative to the opening. A wrench according to the invention can be both strong and compact. The wrench is reliable simple to manufacture and may be made with only three or four parts.

Abstract: A ratchet wrench including a fixed jaw and a movable jaw attached to a body of the ratchet wrench and having V-shaped nut gripping portions opposing each other. The fixed jaw is pivoted to a forward end portion of the body and biased to rotate toward the movable jaw by a spring. An adjusting nut is provided rotatably about a longitudinal center axis of the body, and an adjusting screw rod is threaded into the adjusting nut so that it is movable back and forth along the longitudinal center axis of the body by rotating the adjusting nut in one direction or the other. The movable jaw is pivoted at a rear end portion thereof to the adjusting screw rod by a guide pin which is guided along a longitudinal slot provided in the body and, the movable jaw is biased to rotate toward the fixed jaw by a spring provided between the movable jaw and the adjusting screw rod.

Abstract: A wrench includes a fixed jaw (16) at one end of a handle (15) and a pivoted jaw (19) joined to the handle by a pivot (20) disposed in a plane (30). A spring (25) urges the pivoted jaw through a gripping position in which flat gripping surfaces (17, 18) are parallel and separated by a distance which equals the size of the bolthead or nut to be turned. The plane (30) extends through the proximal edges of the surfaces (17, 18) which are flat from the plane to the distal edges of the jaws, and perpendicular to the plane. An auxiliary lever (45) assists in ratcheting. The wrenches may be single ended, double ended, or adjustable, in which case, an integral pivot bar (50) slides within the wrench handle perpendicular to the gripping surfaces (17, 18). A plurality of springs (25b, 25c) may be used.

Abstract: A wrench for driving a fastener includes a fixed jaw formed on one end of a handle. A pivotal jaw is pivotally coupled to the handle at a pivot axle. A knob is slidably engaged on the handle. A resilient blade pivotally couples the knob to the pivotal jaw for allowing the knob to move the pivotal jaw toward the fixed jaw when the knob is moved toward the pivotal jaw. The handle includes a slot, the knob includes a projection extended inward of the slot for engaging with a spring which may bias the knob toward the pivotal jaw.

Abstract: A pipe manipulating tool having an elongated handle and a pipe engaging portion that grips a pipe when a unidirectional force is applied to the handle. A pipe engaging portion of a first pipe rotating tool has a first arcuate jaw pivotally mounted to the handle and a second arcuate jaw fixedly mounted to the handle. A spring biases the jaw members into clamping engagement with a pipe during use. A pipe engaging portion of a second pipe rotating tool has an arcuate member fixed to the handle with an engagement tooth fixed at a free end of the arcuate member for engaging a hook-receiving recess of a bell end of an irrigation pipe. A pipe engaging portion of a third pipe tool includes an engagement tooth extending axially from the handle to engage in a groove recess of a bell end of an irrigation pipe. A stabilizing member is also fixed to the handle so that the tool can be used to pull apart irrigation pipe without gripping the bell end of the pipe by hand.

Abstract: Wrench for continuous driving engagement with a rotatively driven element such as a screw, bolt or nut, which is particularly suitable for use where the ends of the driven element are not accessible and in applications where space for manipulation of the tool is limited such as in spinal fusion surgery. The wrench has a peripheral driving element which can be engaged from the side with the driven element, and in some embodiments an articulating handle which enables the wrench to rotate the driven element through a substantial angle with only a few degrees of handle movement.

Abstract: An adjustable spanner includes a connecting member which comprises a center tool hole for inserting a screw-driver for use as a handle, two horizontal openings longitudinally aligned on the same plane at two opposite sides by the center tool hole, two vertical screw holes spaced on the same side and respectively disposed in communication with either horizontal opening; and two symmetrical jaw plates connected parallel to the connecting member and respectively retained in either horizontal opening of the connecting member, having each a plurality of vertical mounting holes spaced in a longitudinal direction and alternatively connected to either screw hole on the connecting member by a respective screw, and side notches bilaterally spaced along the respective length for clamping on the workpiece to be turned.

Abstract: A medical instrument as a forcep with tissue-gripping jaws is disclosed herein having pivotal handles carried on an instrument body from which an elongated tube projects enclosing a push-pull rod. The rod carries a pivotal jaw arrangement and outwardly projecting from the tube for tissue grasping or gripping purposes. The other end of the rod is coupled to the handle for actuation of the jaw arrangement by either push rod or pull rod functioning. A spherical piston or rack and pinion gear interconnects the rod end with the jaw arrangement and a rod travel limit stop is operably connected between the handle, rod and instrument body. The jaw arrangement includes a pair of members having opposing wavy and serrated surfaces operably to open and close to retain tissue as the instrument is manipulated by medical personnel.

Abstract: A pipe wrench capable of turning pipes or rods in a convenient manner is disclosed. The wrench includes a handle portion and a pivotable portion, and these two portions are connected through a hinge portion. The pivotable portion pivotally closes and opens the mouth of the pipe wrench, and a pipe to be turned is secured to a rectangular corner of the pivotable portion, so that pipes and rods can be turned in a convenient manner.

Abstract: A tamperproof fire hydrant which can only be operated with use of a special operating means or tool thus preventing the opening of the hydrant by unauthorized persons for unauthorized use. The hydrant is provided with the usual polygonal end portion of the rotatable operating nut extending out of the top closure member. A dome shaped cap is mounted on the polygonal end portion of the operating nut for free rotation relative thereto, the dome shaped cap having a skirt with the lower edge thereof spaced from the tubular hold down nut or top closure member of the fire hydrant to provide a limited access space to the polygonal end portion for reception of the special operating means. The special operating means is also capable of being used as a tool to remove the nozzle cap off of the usual nozzle and to install the hose coupling on the nozzle.