Abstract: Tube bending devices including a device actuator, a crank assembly, a bending die, and a clamp assembly. The crank assembly is mechanically coupled to the device actuator. The bending die is mechanically coupled to the crank assembly. The clamp assembly is operatively coupled to the bending die and secures the tube to the bending die. The device actuator selectively drives the crank assembly. In some examples, the crank assembly selectively rotates the bending die over at least 180 degrees. In some examples, the bending die includes an axle and the crank assembly includes a first link, a crank actuator, and a second link. The first link is pivotally coupled to the device actuator and coupled to the axle. The crank actuator is pivotally coupled to the first link. The second link is pivotally coupled to the crank actuator and coupled to the axle.

Abstract: The metal bending apparatus is an easily portable apparatus with substantial frame integrity. The vertical plate of the apparatus removably receives any of a plurality of different diameter nodes. Each node enables a different radius to be bent into existing sheet metal. While the ideal embodiment features node diameters of ¾ inch, 1 inch, 1 1/16 inch, and 1¾ inch, the nodes are not limited to these diameters only. To bend sheet metal, an edge of the metal is removably secured to the back side of the vertical plate via the metal retainer. The pivoting assembly is then pivoted over the metal and downwardly toward the front of the frame. The metal is thereby bent to the desired radius.

Abstract: This invention is a manually operated tube bending machine with a power drive mechanism that is adjustably set to a desired bend speed. The bending machine includes a bending die, a counter die and a rotating hook die to form a desired bend into a tube or pipe. The tube bender includes a drive wheel with ratchet teeth around its perimeter. A drive pin grips one of the ratchet teeth. The drive pin is secured to a lever and torque bar. During each bending stroke, the lever and torque bar incrementally rotate the drive wheel a desired amount. The rotation of the drive wheel and hook die draw the tube through the bending and counter dies to bend the tube. An anti-spring back mechanism holds the position of the drive wheel while the power drive mechanism is advanced to grip the next ratchet tooth of the drive wheel.

Abstract: A die for use in a sheet metal forming process includes a die material having a surface. A plurality of depressions is formed in a predetermined portion of the surface, where each of the plurality of depressions has a predetermined diameter and depth. Interaction of a surface of a sheet metal blank with i) the plurality of depressions, and ii) a solid forming lubricant, including particles of an average predetermined size and distribution, disposed on one of the die material surface or the sheet metal blank surface substantially reduces adhesion between the sheet metal blank surface and the die material surface during the sheet metal forming process.

Abstract: An apparatus (100) or repairing dented bearing cages (50) comprises: a first contact surface (122) for contacting an outer diameter of the bearing cage (50); a second contact surface (126) for contacting an inner diameter of the bearing cage (50); a first handle (102); a second handle (104) operatively connected to the first handle (102) via a pivot mechanism (106); a retraction element (108) connected to the second contact surface (126); and an adjustment mechanism (116). The retraction element (108) retracts upon movement of the second handle (104) relative to the first handle (102) to move the second contact surface (126) towards the first contact surface (122) so as to impart a force against a dented region of the bearing cage (50) located between the second contact surface (126) and the first contact surface (122).

Abstract: An extruded hollow section that can be fabricated in fewer production man-hours, and furthermore, is stable in quality. With the extruded hollow section, parallel parts each having a width in one direction within a section vertical to the direction of extrusion, being constant along the direction of extrusion, are integrally formed with tilt parts each having a width in the one direction, varying along the direction of the extrusion, wherein the parallel parts are integrally formed with the tilt parts. The extruded hollow section is made of a light metal.

Abstract: This invention relates to an apparatus that is a portable sheet metal apparatus generally for bending sheet metal and more particularly to an apparatus for forming a gutter guard assembly ready to be installed between the outer lip of a rain gutter and a first row of shingles on a shingled roof. Said apparatus comprising a first bending member having a cylindrical bar, a second bending member hinged to the first bending member to provide a means for bending the sheet metal, said second bending member having an angled portion, leg portions, and at least one handle member, wherein pulling the handle member forward and downward provides the application of both pressing and releasing forces against a work piece sheet metal as it is bent between said cylindrical bar of the first bending member and the angled portion of the second bending member.

Abstract: An accessory for a bending brake is secured to the brake only by the clamping force of the brake jaws. A pressing member is rotatably affixed to the base plate which is clamped between the jaws when in operation. A pressing member is attached to the base plate by hinge joints and a linkage, including slotted links which permit the metal sheet to be forcibly pressed against and rolled over the surface of a curved die, ensuring a smooth and even curve surface in the resulting workpiece. The die form is affixed to the front edge of the base plate. The base plates may be interchanged to include different diameter die forms for varying the radius of the executed bend. The location of the die at the front edge of the base plate permits the formation of accurate, smooth curves in sheet metal workpieces in angles of 90-degrees or greater.

Abstract: An accessory kit for a portable bending brake allows bends and rebends to be made in elongated sheet-metal workpieces. The bending brake with which the kit is used has an elongated bed, a clamp which bears against the bed, and a bending apron hinged to the bed around a hinge axis. The kit includes at least one mandrel holder which bears a curved mandrel such as a pipe, and which holds the curved mandrel with its forward surface before the hinge of the apron. The kit also includes an apron fill piece and an auxiliary apron, which has a curved surface normally located below the support plane of the bed.

Abstract: A pipe bending machine with a bending assembly (1) and a support arm (2), pivotedly supported swingingly relative to the bending assembly through a pivot (6) that is slidably supported along a stem (7) on the axis passing through the center of rotation of the matrix and the center of swinging of the countermatrix assembly (the "zero"), so as to automatically position and axis of the pipe on the zero.

Abstract: A hand operated bending apparatus uses a lever arm which acts through a compound lever to increase the applied force. A pin, which mates with a number of holes at various distances along the compound lever linkage, permits changing the lever ratio readily. A bar extending outward from a forming die is slideably enclosed by a slide lock, which can wedge against the bar to lock the slide lock to the slide bar. The slide lock provides the pivot point for the operating lever arm to permit resetting the apparatus after a bend is made to allow bending metal stock by a number of successive steps with little time penalty.

Abstract: A remotely positionable bending apparatus includes a support platform with a mandrel mounted to a front surface thereof and a bending arm pivotally connected between the mandrel and support platform. The outer end of the bending arm rotates around the upper end of the mandrel to bend a rod into a generally inverted U-shape. A clamping apparatus is operably mounted on the platform adjacent the mandrel and includes an actuator which is operated by movement of the bending arm to clamp and release a detector rod in a retained position against the mandrel. Preferably, the actuator includes a shaft which is placed under a biasing force to urge the shaft into a clamped position, with a pivotable lever connected thereto actuatable to overcome the biasing force and release a detector rod from the clamped position. The actuator lever is located in the pivotal path of the bending arm, such that movement of the bending arm to a retracted position disengages the clamping apparatus from the detector rod.

Abstract: A small-diameter metallic conduit bending machine includes a stationary frame. The stationary frame made of bar stock or pipe stock is shaped so as to substantially conform to a finished metallic conduit. The stationary frame includes a bending section which has in its lengthwise direction a curvature smaller than the bend radius of the metallic conduit and in its widthwise direction a guide surface substantially orthogonal to the bend plane of the metallic conduit. A bending member whose outer peripheral surface faces the guide surface is disposed movably toward the stationary frame so that the metallic conduit can be bent so as to lie along the guide surface. The bending member is moved by an actuator when the actuator is in its pulling stroke.

Abstract: An apparatus for bending a leaf spring from a generally straight into an arcuate shape has a frame and a lower jaw assembly on the frame including a fixed central jaw having a flat upper face and a pair of normally curved side jaws flanking the central jaw, each formed by a group of shape-defining fingers, and pivotal about an axis generally centrally between them between a position defining an angle of about 180.degree. and a position defining an angle substantially smaller than 180.degree.. An upper jaw assembly on the frame includes a vertically displaceable central jaw having a generally flat lower face above the lower central jaw, a pair of normally curved side jaws flanking the upper central jaw above the lower side jaws and each formed by a group of shape-defining fingers, and structure supporting the upper side jaws for angular movement about generally parallel axes adjacent the upper central jaw. Thus the upper side jaws can be positioned generally parallel to the lower side jaws.

Abstract: A small-diameter metallic conduit bending machine comprises a stationary frame with a guide surface, a bending member for pressing a metallic conduit against the stationary frame, and an actuator for moving the bending member via a lever. One end of the lever supporting the bending member is pivoted to the stationary frame at a position lying substantially on the axial center line of the metallic conduit within a central portion of a bend section where the metallic conduit is bent so as to lie along the guide surface of the stationary frame. Thus, the metallic conduit can be readily inserted between the guide surface and the bending member, and two successive bending works can be completed through one action.

Abstract: A small-diameter metallic conduit bending machine includes a stationary frame which is shaped so as to substantially conform to a finished metallic conduit. A bending member is provided movably toward the stationary frame from thereoutside to bend a metallic conduit. To prevent the bending member from interfering with the metallic conduit which is moving as the result of the bending process of a preceding stage, an actuator is provided to remove the bending member from the moving area of the metallic conduit. That is, the binding member is made movable toward the stationary frame and retractable from the moving area of the metallic conduit.

Abstract: An apparatus for bending an elongated material in any direction includes a chucking unit, an arm robot having at least three swiveling arm segments, a bending head provided on a free end of the arm segment and a moving device for moving the robot along a line parallel to the chucked material. The bending head is moved by the arm robot perpendicularly toward and away from the material. This facilitates the changing of the bending die to one having a different bending radius to execute bending using various radii. Moreover, since the chucking unit includes an avoiding mechanism for avoiding interference with the arm robot, bending near the center part of the material is also possible.

Abstract: There is provided a bending mechanism for use in the fabrication of metal and other materials. The bending mechanism includes a clamping structure to secure the material to a supporting plate with the portion of the material to be bent projecting from the clamping structure. A bending plate is then brought into contact with the material and rotated about the edge of the supporting plate to bend the material to the desired angle. Multiple bending mechanisms can be utilized for longer and/or multiple bends of the material.

Abstract: A pipe bender assembly comprising a pipe bender and a pipe clamp (36) cooperable therewith, the pipe bender including a body (10), a main die (12) forming part of, or mounted on the body, the main die having at least one part annular groove on its periphery. A circular shaping die (16) having an annular groove on its periphery and rotatable about its own axis, which is parallel to the axis of the main die, is supported on a mounting (16) so that it is rotatable about the axis of the main die. The mounting (16) is drivable by a reduction gear (20,22,24,26). An abutment surface (32) is formed on the body of the pipe bender and the pipe clamp has a pipe receiving bore therethrough and an outer surface including at least two faces (50,58) each selectively engageable accurately with the abutment surface to position temporarily the pipe clamp with respect to the pipe bender, the faces (50,58) extending at an angle to one another when viewed along the axis of the pipe receiving bore.

Abstract: Tube forming apparatus for forming a tubular part having an enlarged diameter end section at one end with an adjacent short radius bend is disclosed. A straight length of tubing is magnetically positioned between die members and fixedly clamped with opposite ends of the tube projecting from opposite ends of the die. One end of the clamped tube is then enlarged to form the enlarged end section. A magnetic transfer device is engage with the other end of the clamped tubing and, with the die opened, the tube is transferred to a second position between the die members which are closed to clamp the enlarged end section only with the remainder of the tubing projecting from the die. A tightly fitting plug member is seated in the interior of the clamped end section and a bending member the bends the projecting end of the tubing against an anvil formed on one of the die members.

Abstract: A method and apparatus for bending tubular workpieces whereby a tube length is placed in front of a template and selectively driven deforming shoes urge the tube into engagement with the same. Where the desired tubular radii of curvature are relatively large the deforming shoes are driven from a stationary mount. Where shorter tubular radii are desired, generally near the tube ends, the deforming shoes are arranged such that they are incrementally translated along a path commensurable with the contour of the template. At each successive increment the deforming shoes perform a bending operation upon the tube such that it may be successively formed into its desired shape.

Abstract: A tube bender has two readily connectable and detachable members. A base member has a block with two parallel grooves. The tube groove is formed in an arc having the radius of the desired bend and a cross-section with a radius corresponding to the tube diameter. The second groove has straight sides and an arc similar to the tube groove. Pivotally mounted on the base member adjacent the block is a retainer. In its first position a radius therein clamps the tube in the tube groove. In its second position, a fork fits over the conventional ferrule of a connector fitting. The block is notched opposite the retainer to receive the outer end of the fork and a connector nut. The forming member has a crescent-shaped end of a radius complementary to the second groove so that the crescent may fit snugly in the second groove. A forming block on the forming member engages the outside of the tube and causes it to conform to the shape of the groove. For manual operation, the two members have diverging handles.

Abstract: A device for forming orthodontic arches from straight wire blanks comprises a die having a cylindrical surface with multiple wire-receiving grooves situated in planes perpendicular to the die axis. A clamp temporarily applies a clamping force to the wire blank, thereby firmly holding a portion of the wire blank in the groove of the die. The bender has two sweep arms, each pivoted on the die axis. A slide is provided on each of the sweep arms, and is constrained for movement toward and away from the die axis. Each slide carries a circular cylindrical roller mounted in bearings on the slide, for rotation about a roller axis parallel to the die axis. An adjustable toggle mechanism on each arm temporarily locks its roller in a position such that the outer roller surface presses the wire blank into one of the wire-receiving grooves before the arm begins to sweep about the die axis, and throughout the sweeping movement of the arm.

Abstract: A rotary compression bending machine comprises a radius die, a wiper die, and a flexible ball mandrel. Hydraulic cylinders are provided to simultaneously drive the wiper die around the radius die and to draw the ball mandrel through the tubing in order to reform the tubing while bending. The reformed tube will be wrinkle and distortion free around the bend radius.

Abstract: The disclosure concerns a smooth continuous steel trough, free of longitudinal weld joints except for a flanged frame attached to its open top for supporting a cover grating. The apparatus for performing these steps comprises a conveyor table for moving and clamping a parallel edged sheet of steel while it is cut, such as by a torch, to predetermined length sides, and angled ends corresponding to the flow pitch for the resulting trough. The resulting isosceles trapezoidal section is then conveyed and aligned under an oscillatable convex mandrel or roller having a longitudinal clamping rib axially along its periphery for clamping the trapezoidal sheet near its center at the bottom of what is to be one of the equal side walls of the resulting trough. The conveyor and/or support for the sheet at the mandrel is vertically adjustable to compensate for different size mandrels and thicknesses of the sheets.

Abstract: A forming machine to form a sheet of metal to an "S" bend having clamps to clamp the sheet metal, one of the clamps having an anvil about which the sheet metal is folded by a rotatable forming bar to form a first channel and partially form a second channel in the sheet metal after which the rotatable bar is moved clear and a nose on a further former further folds the second channel facing in the opposite direction to the first channel.

Abstract: A panel brake has an intermediate jaw disposed between one fixed jaw having a straight edge and another fixed jaw having a curved edge. The intermediate jaw is movable so as to grip a panel against either the straight edge fixed jaw or the curved edge fixed jaw.

Abstract: Apparatus for bending valve stems of inner tubes used primarily in truck tires which facilitates locating the area of bending contemporeous with readily controlling the bend angle of the stems. An apertured clevis is pivotally mounted on a housing that is grooved to receive a valve stem, with a cylinder and piston connected to the clevis for actuating same with respect to the housing to effect a bending of the valve stem. The housing contains a cylinder and piston for actuating rack and pinion members with suitable indicia provided on the pinion for imprinting upon the valve stem. The cylinder and piston members for the bender and the marker are controlled by an air lock safety system.

Abstract: An apparatus for the bending of large area construction units, particularly of tightly welded tube walls for boiler construction, with a supporting table for that part of the construction unit which is not to be deformed, which is held down at least in the vicinity of the bending zone by means of a moveable press. A pivot table is provided for bending the remaining part of the construction unit, which pivot table is equipped with a slide plate abutting the construction part to be bent. The slide plate is guided freely displaceable relative to the pivot table in the longitudinal direction of the same.

Abstract: Apparatus for bending the outer edge of sheet metal members includes a yoke having a substantially C-shaped contour. The sheet metal member is supported to be engaged with one of the legs of the yoke. A movable tool carrier is mounted on the yoke and includes a clamping member for retaining the sheet metal member against the support member and a bending member for engaging the edge of the sheet metal member to bend it about the support member in the desired shape. A reciprocating drive is connected to the yoke for actuating the clamping member and the bending member, and to move the tool carrier relative to the support member.

Abstract: A cable bender apparatus for bending cables, for example of the type having thermoplastic insulation around copper or aluminum strands. The apparatus is connected to a cable for bending the latter to any desired degree and is actuated by, for example, a single acting fluid cylinder. The bending shoe is adjustable on a bending yoke so as to accommodate cable of different diameters and will not inadvertently become disassembled upon relaxation of the bending pressure. The bending saddle swings as the cable is being bent and the arrangement is such that the saddle remains perpendicular to the cable and will not cause the insulation to be ruined as the saddle slides slightly along the insulation.

Abstract: Apparatus for bending a thin flexible and narrow strip having a flat longitudinally extending base portion and a central longitudinally extending rib projecting upwardly from the base portion at right angles thereto, the upper edge of the rib being sharpened, the strip being of the type adapted to be attached to a printing cylinder and used for perforating or shearing paper sheets being printed, the apparatus being adapted to bend the strip at right angles to the base portion thereof to form a predetermined geometric shape, such as a rectangular shape for cutting rectangular windows in the paper sheets. The apparatus comprises a stationary die mounted on a supporting base. The stationary die is provided with a recess at the lower portion thereof extending around the entire periphery and inwardly into the stationary die a distance slightly less than one-half of the width of the base portion of the strip.

Abstract: A universal tube bending machine includes a frame mounting an upper die clamp with a downturned channel. A support arm is pivoted to the frame and mounts a corresponding lower die clamp with an upturned tube receiving channel to grip the tube to be bent. A lower bending die is secured upon said arm outwardly of the lower die clamp, having an arcuate channel to receive the tube and of a predetermine radius corresponding to the desired bending radius for said tube. A power reciprocated bending arm including a depending die block is rotatably mounted on the frame on a center corresponding to the lower bending die, and has a downwardly opening tube engaging channel. The bending die block is adapted to rotate in the range of 1.degree. to 180.degree. making a corresponding bend in the tube. A power cylinder and rod on the frame operatively holds the arm, the lower die clamp and the lower bending die in registry with the tube during bending and thereafter is adapted to retract the lower die clamp and bending die.