Abstract: An axial linkage acting between the main body and the gripping assembly of a tool for gripping tubular workpieces includes a drive cam body that coaxially engages an intermediate cam body via a drive thread, with the intermediate cam body coaxially engaging a driven cam body via a driven thread, and with the drive thread and the driven thread having opposite orientations. The linkage includes a latch mechanism for preventing relative axial displacement of the drive cam body and the driven cam body. In operation while unlatched, the linkage converts bi-directional relative rotation into relative axial movement of the drive cam body and the driven cam body, thus increasing or decreasing the overall length of the linkage according to the rotational direction. The linkage can be re-latched using any of multiple operational sequences.

Abstract: A workpiece gripping device includes a gripping body part that includes a slit into which a plate-shaped part of a workpiece can be inserted; and a positioning mechanism that includes an engagement part that is structured to be engaged with the plate-shaped part of the workpiece in the slit of the gripping body part, in order to position the workpiece.

Abstract: Tire bead holding pliers includes a first jaw having a lipped plate configured to engage an outboard side of a wheel rim to locate the pliers, and a second jaw defined by a first and second hook and configured to curve around the wheel rim, move toward the first jaw, and engage an inboard side of the wheel rim as the pliers are tightened. The first hook has a first concave portion facing away from the first jaw and configured to receive a bead. The second hook extends from the first hook opposite the first concave portion, has a second concave portion facing the first jaw, and clamps the wheel rim therebetween. During tire installation or removal, the bead is hooked onto the second jaw, which holds the bead in place during the operation in a hands-free fashion.

Abstract: A tubular is automatically gripped below an upset end or coupling and released mechanically or with the use of pressure or other devices such as motors and or gear arrangements. A mandrel connects to a traveling block and/or top drive and enables selective supporting and releasing of an “upset end” tubular (casing, tubing or drill pipe) by changing the load carrying element as well as sealing element, this allows supporting while running or pulling, filling, flow back and/or circulation.

Abstract: A drill rod clamping system for securing a drill rod in a selected position. The drill rod clamping system has a hollow spindle with an upper portion that defines axial slots and a base portion that defines at least one radial opening. A plurality of jaws are moveable radially inwardly to a drill rod gripping position and radially outwardly to a drill rod releasing position. Each jaw is received within a respective axial slot of the hollow spindle. An actuator moves the plurality of jaws between the drill rod gripping position and the drill rod releasing position. A compressed gas spring assembly exerts force on the actuator to close the jaws. A hydraulic operator exerts force on the actuator to overcome the force of the compressed gas spring assembly to open the jaws. The radial openings of the base portion of the spindle permit flushing of material flowing within the spindle.

Abstract: A tool for gripping a tubular workpiece comprises: a land element for reacting compressive load against an end face of the workpiece; grip elements and grip element carrier means; a main body with means for converting axial motion of the tool relative to the workpiece into radial movement of the grip elements from a retracted position to an engaged position exerting radial load on the workpiece; and retractor means for retracting the grip elements from the workpiece the tool is displaced axially away from the workpiece. The grip element carrier means may comprise a cylindrical cage with the grip elements being radially slidable within circumferentially-spaced windows in the cage. The means for converting axial movement and load into radial movement and load may comprise a cone or ramp surface that bears against the grip elements such that radial loads from the grip surfaces are carried through the main body.

Abstract: Spring loaded dogs are attached to the housing to engage the casing internally or externally to facilitate extension or retraction of the slips that selectively grab the topmost of a string of casing. When the tool is suspended from the top drive, its components are rotationally locked to facilitate insertion into the casing stand on top of a string being run in the hole. Some set down weight allows top drive rotation to move a multi-ramped mandrel axially because that mandrel is rotationally locked to the housing that is held fast by the spring loaded dogs bearing on the casing. Once the slips are extended with a specified torque applied from the top drive, further setting down weight locks the components and the housing so that applied rotation with setting down weight will turn the casing string but will not torque up the slips beyond their set position.

Abstract: A hand tool, such as a duct seamer. The hand tool may include a first handle; a second handle connected to the first handle for pivoting movement about a handle pivot point; a first jaw operably connected to the first handle and having a first inner surface; a second jaw operably connected to the second handle and having a second inner surface; a first groove and a second groove on each of the first inner surface and the second inner surface; and a first shoulder created by the first groove and a second shoulder created by the second groove on each of the first inner surface and the second inner surface, the first shoulders providing a first stop and the second shoulders providing a second stop for the work-piece. The jaws may provide the shoulders at a distance of ? inch and 1 inch from a front of the jaws.

Abstract: A tire spoon holder is provided. The tire spoon holder may include: a first and second handle; a first and second jaw, each jaw connected to at least one of the handles wherein the jaws are configured to come together when the handles are moved toward each other; and a loop attached to at least one jaw or handle. A method of attaching a tire spoon to a wheel rim may be provided. The method may include: attaching a tire spoon holder to a wheel rim; slipping a tire spoon through a loop in the tire spoon holder; and inserting a flat portion of the tire spoon between a tire and the wheel rim.

Abstract: A multipurpose electrician's tool is disclosed having a plurality of fabrication and installation features. The device comprises a plier tool having a first and second member connected at a pivot point, including a wiring stripping section, a shearing section, a cutting section, a gripping section, a wire bending section and a hammer head section. The wire stripping section allows insulated wire to be stripped to expose bare wire; the shearing section comprises an alignable set of apertures for tailoring a screw length by a shearing action of the two members; the cutting section comprises a pair of adjoinable cutting surfaces; the gripping section is positioned at the distal end of the plier members for compressing items therebetween; the wire bending section allows for wire ends to be formed for solderless connections; and finally the hammer head section comprises a pair of impact surfaces for driving nails or striking a target.

Abstract: A set of pliers having either right or left offset handles, each of which provides clearance for a user's hand when used for gripping an object protruding from a large flat surface. The pliers include adjustable slip-joint tongue-and-groove plier jaws with offset angled handles. The handles are intermediately angled to a right side or left side to allow gripping or rotating of an object located in close proximity to a flat wall or floor surface, while maintaining a parallel relationship between the pliers and the adjacent surface. The pliers also include jaw covers to protect fine surfaces, and contrasting colored handle grips.

Abstract: A lockable pipe support holding device of the plier type is provided, having large flat jaws for gripping pipe straps, shoes, hangers and materials. The jaws have a textured inner surface and notched grooves along the lateral edges to promote firm grip on metal and bending of the same. A “U” shaped recess along the front edge of the jaws allows fasteners to be inserted into a strap or similar object being securely held by the tool. A user may adjust the gap between jaws by means of an adjustment screw in a handle. In addition the jaws may be locked in place and then unlocked by means of a lever housed in a handle. Consequently, a user may insert fasteners into a working area of an object without having to hold onto the tool while doing so.

Abstract: A tool for placing a shim between a housing and a component biased towards the housing is provided. The tool can include a handle and a pair of spaced-apart tongs extending outwardly from the handle. In addition, a shim support surface can be located between the pair of spaced-apart tongs. The spaced-apart tongs and the shim support surface can be dimensioned for a shim to nest between the tongs on the shim support surface.

Abstract: Canvas stretching locking pliers having upper and lower lateral plates disposed on the jaws thereof with the upper lateral plate having a plurality of pointed prongs for crimping the canvas and the lower lateral plate having corresponding prong apertures for receiving the prongs and canvas therein. A fulcrum extension is provided on the lower lateral plate for placement against the stretcher bar wherein lowering the articulating arms of said locking pliers pulls the canvas in a regulated manner without overstretching.

Abstract: A gripping device comprising a first arm pivotally connected to a second arm. The arms form a gripping area. A linkage mechanism is used for adjusting the inwardly and outwardly movement of the gripping area, with the linkage mechanism pivotally connected to the first arm and second arm. The linkage mechanism is formed of a first linkage laterally and pivotally connected to a second linkage.

Abstract: Vise pliers with duck bill jaws and a brake attached thereto, having utility as a vise pliers tool and/or as a handheld sheet metal brake.

Abstract: An offset force clamp is provided for securely holding a workpiece to a table of a cutting machine. The clamp is a modified clamping pliers having a planar base jaw and an elongate upper jaw oriented perpendicular to one another. The base jaw is preferably mounted fixedly to a first handle of the clamp and the upper jaw is preferably mounted pivotably to a second handle of the clamp. The base jaw is configured to engage the table as the upper jaw applies an offset force to hold the workpiece so that the clamp is not cut during the cutting operation.

Abstract: A method of removing a glow plug from a combustion engine utilizing a hand tool includeing two interconnected arms each being movable with respect to one another and each having a working end and an opposing handle portion. The hand tool may further include an extension body that has a generally tubular configuration. The extension body may have a first body portion and a second body portion wherein the first body portion extends from one of the interconnected arms and wherein the second body portion extends from the other of the interconnected arms and wherein each of the first body portion and the second body portion includes an interior surface that is threaded.

Abstract: A gripping device comprising a first arm pivotally connected to a second arm. The arms form a gripping area. A linkage mechanism is used for adjusting the inwardly and outwardly movement of the gripping area, with the linkage mechanism pivotally connected to the first arm and second arm. The linkage mechanism is formed of a first linkage laterally and pivotally connected to a second linkage.

Abstract: A gripping tool includes a body assembly and gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement. A linkage is provided to act between the body assembly and the gripping assembly which, upon relative rotation in at least one direction, of the body relative to the grip surface results in relative axial displacement of the grip surface to activate the gripping elements. This tool was developed for use on drilling and service rigs having top drives, and supports rapid engagement and release, hoisting, pushing, and rotating.

Abstract: An adjustable wrench for gripping and rotation of a generally cylindrical canister, such as an oil filter canister, includes handles which are pivotally connected to each other for rotation about a first axis. Each handle is also connected by an articulatable joint to a gripping jaw that may be positioned about the canister or body, to thereby alter the angle of the handles with respect to the jaws in order to enable use of the tool in confined spaces.

Abstract: A tool for crimping the barb defined by a conventional fishhook is disclosed. The tool includes a pair of forceps on which is carried a barb crimping element. The tool is provided for modifying a conventional fishhook to allow a fisherman to catch fish in a catch-and-release manner without causing undue harm to the fish. The tool is a pair of forceps adapted to include a fishhook barb crimping device. The barb crimping element includes a first head carried by the first arm and a second head carried by the second arm. The first and second heads are configured to define an interior face, the two interior faces being configured to cooperate to engage when the finger loops are engaged toward a locked position.

Abstract: Disclosed are pliers for suction cup capable of removing easily a suction cup from an eyeglass lens. The suction cup includes a lens holding portion for holding the eyeglass lens and a mounting base formed integrally with the lens holding portion. The pliers comprise first and second pinching portions relatively movable close and apart to each other for pinching the mounting base, opposed surfaces formed on the first and second pinching portions to oppose the mounting base, and an engaged convex portion provided on at least one of the opposed surfaces of the first and second pinching portions to contact with the mounting base.

Abstract: An air brake slack adjusting tool for pushing in the locking collar on a slack adjuster bolt. The air brake slack adjusting tool includes a first elongate member having a handle portion and a slack adjuster portion; and also includes a second elongate member being pivotally attached to the first elongate member and having a handle portion and a support portion; and further includes a ratcheting mechanism being disposed in the slack adjuster portion for engaging a locking collar on an air brake.

Abstract: A clamp or locking pliers of this invention are intended for positioning aligning a first wooden framing member transversely relative to a second wooden framing member prior to attachment of the first wooden framing member to the second wooden framing member. The clamp includes a first gripping jaw and a second gripping jaw. The first and second jaws are shiftable toward each other to grip the first wooden member. A crossbar extends transversely, preferably at right angles, relative to the first and second gripping jaws for supporting the first wooden framing member on the second wooden framing member and for mutually aligning the two members so that they can be nailed together. A safety guard on the locking pliers includes a bail that can be rotated to prevent release of a locking pliers release clip so that the pliers can be used to hoist a wooden framing member.

Abstract: A fire head sprinkler tool comprising a pair of jaw extensions which may be either integral with or removably connected to a large capacity clamping or locking pliers. The locking pliers have a movable and a fixed jaw, and the jaws define a large cylindrical inner opening. The jaw extensions include upper working portions which further include concave gripping portions. The jaw extensions extend substantially laterally from one side of the jaw portion of the pliers, and the vertical axes of the jaw extensions are offset from the plane of the jaw side at an angle.

Abstract: A manually operated gear pliers apparatus, and a method for its use, with opposing jaws having cut away and precisely configured distal ends that allow a secure fit between adjacent external teeth on a ratio gear in the quick-change rear end of a race vehicle, and also having stops for the front and back of a supported gear, so that one hot gear at a time can be rapidly and neatly extracted from the hot quick-change rear end and safely transported to an intermediate location pending further use, without the direct contact between hot gear, hot gear lube, and operator that can lead to operator injury. The present invention comprises two elongated, single-piece lever members pivotally connected at a fulcrum, each lever member having a straight lower handle with an insulated distal portion; an upper handle transitionally angled relative to the lower handle; and a jaw element perpendicularly extended with respect to the upper handle.

Abstract: A clip assembly tool for grasping the finger and legs of a retainer and spreading them apart from one another includes a lower arm having a first clasp and an upper arm having a second clasp. The lower arm is pivotally attached to the upper arm. The tool further includes a wedge arm having a nose, where the wedge arm is pivotally attached to the upper arm. To use the tool, the second clasp is moved away from the first clasp and the retainer is inserted between the first and second clasps. The second clasp is then moved back towards the first clasp. The nose of the wedge arm then wedges the legs and finger of the retainer in first and second catchs of the first and second clasps, respectively. The second clasp is then again moved away from the first clasp. Since the legs and finger are securely fastened to the first and second catches, respectively, the finger is spread from the legs.

Abstract: A hand tool for gripping and joining together adjacent duct sections. The hand tool includes jaws which are adapted to be wedged between the wall and the drive edge of the adjacent duct sections respectively where the hand tool is used in a first orientation where the hand tool is positioned generally perpendicularly to the walls of the duct sections. A notch in each of the jaws defines a time which is adapted to be wedged between the wall and the drive edge of the adjacent duct sections respectively where the tool is used in a second orientation where the tool is positioned generally parallel to the wall of the duct sections. The handle on the tool is closed to bring the jaws together and thus the duct sections gripped thereby together into abutting relationship so as to allow a drive cleat to be applied to the drive edges of the duct sections to secure the duct sections together. A locking assembly associated with the handle allows the tool to be clamped to the duct sections.

Abstract: A tool is adapted to simultaneously grab a fastener clip, draw the tongue of the clip in a direction away from an opposing leg to establish a clearance condition for installation and removal of the clip from the edge of a piece of sheet metal, and support the clip to prevent bending of the legs of the clip. The tool includes a pair of opposing jaws connected for movement toward and away from one another with actuating means such as associated handles. One jaw is formed with a surface to establish a fulcrum with the connected end of the tongue, and an operative end adapted to grab the free end of the tongue. The other jaw includes a cam surface for supporting the opposite end of the leg to which the tongue is connected. The jaws cooperate to effect separation of the tongue and the opposing leg of the clip to establish the clearance condition as the handles are squeezed together.

Abstract: A pliers for a hose includes a pair of arms pivotally connected together at intermediate portions of the arms. Each arm has a handle section and an end section opposite the handle section, and a "floating" gripper attached to the end section of each arm. Each gripper has an internal surface which substantially conforms to the configuration of a portion of the external surface of the hose being engaged by the grippers upon grasping the hose with the pliers.

Abstract: Gripping device includes a handle and an upper jaw disposed on the handle. A lower jaw is operatively associated with and moveable relative to the upper jaw. An upper plate is associated with the upper jaw and a lower plate is associated with the lower jaw. At least one of the upper and lower plates is offset relative to its associated upper/lower jaw. Preferably, at least one of the upper and lower plates are substantially flat. Preferably, both of the upper and lower plates are flat and an optional rubber pad may be placed thereon. Rubber teeth for gripping an object may be provided on the rubber pad. A safety latch may be provided for preventing inadvertent operation of the gripper. The gripping distance between the upper jaw and the lower jaw may be fixed so as to consistently and correctly grip an object, such as a vehicle seat belt, therebetween.

Abstract: A pliers which allows the user to firmly hold a tack, nail, or screw for application, particularly when in use against a structure. The pliers incorporates a handle offset which allows the user to apply the fastener when working in close quarters with the point of application. The device includes longnose pliers blades with varying diameter of serrations for firmly holding a wide range of fastener sizes and applying them in hard-to-reach spaces.

Abstract: A plier-type tool grips the spacing tube or ferrule which surrounds lengthy spikes used to secure a rain gutter to a building. The tool has legs that are pivotally connected and are used to open and close opposing arms that form a jaw. The inside surface of each arm of the jaw is fitted with half a cylindrical tube. The tube halves come together to form a single elongated tube at the front end of the nail spike grip. The tube is transversely positioned on the tool so as to generally form a T-shape with the legs of the nail spike grip. The tube fits within the channel of a rain gutter and is used to guide and support a spike as it is positioned within a spacing tube during installation. While supported by the tool the spike is driven through the inner wall of the gutter and into the trim of the building in order to secure the rain gutter thereto.

Abstract: A gripping tool of the pliers type for removing an inking plug from an ink container including a pair of pivotally connected handle members being connected by a pivot pin; and a pair of opposed semi-circular shaped jaws rigidly attached to the pair of handle members, respectively; such that each of the jaws forms an arc of between 90.degree. and 180.degree..

Abstract: A manipulator tool for grasping an anastomosis cuff has two gripping fingers with indentations. When the gripping fingers are brought together, the indentations form an aperture between the gripping fingers which is used to surround and grasp the outer surface of an anastomosis cuff. The indentations can have various shapes to conform to different sizes and different shapes of cuffs. The gripping fingers may also be adjustable and replacable. The manipulator tool may also include a latching or locking device for keeping the tool closed in a particular position.

Abstract: A plier-like tool for joining flexible hosing with hose connection nipples and hose compression rings. The tool has cutouts in the jaws which allow the flexible hose to pass through. The portion of the jaws adjacent to the cutouts form a pocket structure which surrounds the compression rings on the flexible hose. When the jaws are closed, the compression rings are held in place by the pocket structure while they are pressed onto the sections of flexible hose which are joined by a hose connection nipple. The tool has an optional hose cutter for trimming the hose and optional nipple pushers for insertion of the nipples into the flexible hose.

Abstract: Surgical crimping pliers have operating handles and connected, opposed jaws. The jaws define opposed recesses for carrying and crimping a tubular crimp member, which is preferably of oval configuration for carrying a plurality of multistrand cable sections so that, upon crimping, the cable sections are secured together. A capstan is carried on one of the handles for winding a plurality of cable portions so that tension may be placed on both ends of a cable loop array wound about a bone structure, to provide a predetermined, quantitative tension. Then the cable sections within the crimp are secured together by collapse of the crimp. A multistrand cable is preferably used, which exhibits great advantage over single strand wire, and which carries surgical needles of differing type secured to each end thereof.

Abstract: A tool for adjustably spacing components during an alignment procedure. The inventive device includes a spreader plate pivotally mounted to an engaging yoke. A handle assembly is coupled to the yoke to facilitate manual placement of the yoke and spreader plate between two components to be adjusted. An adjustment assembly is rotatably coupled to the handle assembly for selectively pivoting the spreader plate relative to the yoke to separate the components to a desired spacing.

Abstract: A hand tool is disclosed that includes a first handle that provides at one end a first hinge joint extending in a first direction and a hollow tube extending in the other direction. A fixed work element is attached at a distal end of the tube. A second handle is aligned with the first handle and provides a second hinge joint that extends in rotational engagement with the first hinge joint and includes a first set of gear teeth facing the tube. A hinge pin is pivotally engaged with and aligns the first and second hinge joints. As such, the second handle is rotatable toward and away from the first handle about the pin. A transfer rod is rotatably held within the hollow tube and extends therethrough to a movable work element that is positioned adjacent to the fixed work element. A toothed gear segment is fixed to the transfer rod and includes a second set of gear teeth that engages the first set of gear teeth.

Abstract: A tool for manually crimping a flanged vehicle door panel onto a door frame without the need to remove the door from the vehicle body. The tool includes a pair of levers having a slip joint pivot connection. The jaw of one lever carries a crimping head that can be slipped through the gap between the hinged edge of the vehicle door and the adjacent fender panel. The other jaw carries a backing head which opposes the crimping head when the levers are squeezed together to close the jaws in order to effect crimping of the door panel.

Abstract: In a manually operated pliers-type tool comprising an elongated tool body with a part defining an operative section with two carrier means for operative means such as crimping die members, and a longitudinal operating lever, which is journalled to the tool body and together therewith defines a reverse handle arrangement, projects that part of the tool body and tool, which defines the operative section, in the direction from which the operating lever is attached to the tool body, and the operating lever terminates, in its folded-down position, before that projecting part, and is level therewith. In a preferred embodiment, one of the carrier means is embodied by at least one rocker which is pivotably mounted in the operative section with the aid of a resilient means, so that the respective operative means may recede to a certain degree under the effect of predetermined load.

Abstract: A pipe clamping device, viz., pipe tongs, is shown which is particularly adapted to securing pipe as it is lowered into a pipe casing in the earth. The pipe tongs consist of a fixed handle with a removable pipe clamp at one end thereof and an adjustment screw at the other end, and a movable jaw member with a removable pipe clamp at one end thereof, a movable handle connected to the movable jaw member at one end and having a latch with an operating lever at the other end. A linkage is connected between the movable handle and the adjustment screw to provide an adjustable toggle or locking mechanism for the handles and movable jaw member of the tongs. A catch on the fixed handle is engaged by the latch to secure the movable handle in a locked, closed position. The removable pipe clamps are provided in a variety of sizes and shaped for accommodating different pipes.

Abstract: An adjustable jaw pliers wherein the adjustable jaw pliers have a quick release threaded rod positioning portion which engages the threaded rod which has a pliers jaw attached to one end of the threaded rod. The pliers jaw which is attached to the threaded rod can be positioned at any distance from the other pliers jaw of the pliers by disengaging the threaded rod laterally from the quick release threaded rod positioning portion of the pliers. The pliers handle containing the quick release threaded rod positioning portion has a locking device attached to the pivot pin of the pliers. The locking device locks the threaded rod into the quick release threaded rod positioning portion of the pliers. Another aspect of the adjustable jaw pliers has the threaded rod attached to one of the pliers handle portions and a quick release adjustable position pliers jaw is positioned laterally to the threaded rod to and locked into place by a locking device.

Abstract: A device for engaging and prying open J-nut clips of various shapes and sizes from a locked position on an automobile body part to permit easy removal thereof without damaging the same. The device having first and second handle members pivotally coupled together. The distal end of the first handle member having a U-shaped gripping member and the distal end of the second member having an upwardly extending portion for gripping and prying apart a J-nut clip.

Abstract: A ring removal tool has a pair of handles joined by a pivot and biased to a first position by a spring assembly. A pair of head portions on like ends of the handles together from a head with a cylindrical inner surface and a conical outer surface. The tool can be placed about the finger near the ring and the head slipped between the finger and ring. With the ring cut, the tool can exert sufficient force to spread the ring to such size as to enable it to be readily removed from the finger without inflicting harm to the finger.

Abstract: An improved battery cable pliers includes a jaw configuration having a knife edge and spaced parallel legs which fit totally beneath a connector and cooperate with a second jaw associated with the pliers.

Abstract: A clamp comprising a plurality of pivotally related members and a plurality of jaw elements, each secured at the yoke portion thereof to a pivotally related member. From the free ends of each of the leg portions of the jaw element immediately below the uppermost jaw element are flat extension members, each extension member having two flat portions. The first portions extend upwardly from the jaw element immediately below the uppermost jaw element to a location above the uppermost jaw element. The second portion is essentially perpendicular to the first portion and located above the uppermost jaw element and aligned with the uppermost jaw element for clamping engagement with a work piece. This clamp is particularly useful for metal constructions which have a lip.

Abstract: An angle clamping tool is provided having a handle including a lockable clamping mechanism operably connected to two jaw arms. Each jaw arm includes an end portion and a medial portion. Secured to the end portion of each jaw arm is a clamping jaw comprising a pair of two elongate clamp members. The clamp members are adjustable to form a selected angular relationship with respect to each other, depending on the types of materials being secured together and the uses for such materials. Once a selected angle is obtained, means are provided for locking the clamp members in such angle during use. The jaw arms in the invention are designed so that, when the handle portion is gripped, the clamping jaws move inwardly toward each other so as to meet and engage work pieces therebetween. The jaw arms are further designed so that when the clamping jaws meet, the medial portions of the jaw arms are sufficiently spaced from each other to permit passage of the clamped work pieces therebetween.

Abstract: A lock and method for locking circuit breakers, as well as a tool for making such circuit breaker locks. The circuit breaker lock comprises a U-shaped member with a portion of one of the arms of the U being bent away from the other out of the plane of the U, the bent portion forming a foot. The other of the arms is insertable into a bore which extends through the toggle switch on a circuit breaker. The circuit breaker is locked by placing the foot against a portion of the circuit breaker housing such that the switch cannot be urged from its locked position. The tool used for making such circuit breaker locks has first and second jaws which are movable toward and way from each other. A U-shaped bracket is mounted on the first jaw, which bracket receives the second jaw as it is moved toward the first. The bracket has two spaced supports which receive the second jaw therebetween when it is moved toward the first and project away from the first jaw.