Abstract: A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal and rotational movement during the bending operation by tube holding structure arranged to clamp the tube against an extended groove portion of the mandrel. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. The tube clamping structure includes a hook which is swingably mounted to the mandrel and adjusting structure is provided for adjusting the disposition of the swingable hook to provide a desired clamping force of the hook against the tube. The illustrated adjusting structure includes an eccentric pin and structure for locking the pin in adjusted positions.

Abstract: A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal movement during the bending operation by tube holding structure arranged to retain the tube against such movement. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. The mandrel defines an extension adapted for adjustably mounting the tube holding hook to further define structure for adjusting the disposition of the tube to be bent to be accurately tangential to the bending groove at a bend start position thereof.

Abstract: The invention contemplates a pipe-bending technique wherein an arcuate die which determines the course of bending the central axis of the pipe relies solely upon two tangentially engaging developing lines of contact which are spaced equally, at opposite offsets from the radial plane in which the pipe axis is bent. For the case of pipe bending to a circular arc, the opposed die faces are generally conical, and there is no pipe contact with the die in the range between the spaced developing lines of tangential contact.

Abstract: A bending device for metal pipe with and without plastic jacketing has a short cylindrical segment including a circumferential groove which determines the bending radius of the pipe to be bent and a support for holding the pipe to be bent tangentially with respect to the groove. A lever is mounted for concentric pivotable movement about the segment and a pressing block is mounted on the lever for pivotal movement about an axis parallel to the segment axis. The pressing block has a working surface which has an approximately semicircular, concave cross section in a plane disposed parallel to the pivot axis of the pressing block and the segment axis and a concave cross section in a plane disposed perpendicular to those axes.

Abstract: There are three different point-of-use apparatus that are adapted to be actuated by a socket wrench handle or handles. The first apparatus includes two like jaw member assemblies that have spaced apart substantially parallel upper and lower jaws connected to an end member which has a receiving socket for a wrench handle. The upper jaw is beveled at forty-five degrees so that when a strip of metal is mounted in facing jaw members the strip may be bent by the wrench handles to a desired angle. Another apparatus is for bending or pulling cable or tubing and includes end plates and connecting rods. The rods may utilize bushings for bending to a specific diameter. A third is for cutting of the cable or tubing and includes a scissors-type cutter with one handle removed and driven by a ratchet wrench.

Abstract: A pipe bending apparatus for bending thin wall pipe used in oil and gas pipelines. The apparatus includes a housing section with an upper bending die connected to its frame. Mounted within the housing section are a pair of flexible external bending shoe assemblies for clamping around the external surface of that section of pipe to be bent. The apparatus further includes a flexible mandrel aligned between the external bending shoe assemblies and adapted for being inserted into the pipe and expanded during bending operations. A positioning assembly is also connected between the mandrel and the housing section for accurately positioning the mandrel in the pipe and moving the pipe with respect to the apparatus while insuring that the bend is properly aligned. The mandrel further includes a series of slidably mounted shoe assemblies which move in a toggle-like manner to engage the inner surface of the pipe.

Abstract: A tool for bending rod-like articles such as bendable insulated electrical wire, said tool having a shaft with a sleeve rotatably mounted thereon; a center post of a three post bending combination at one end of said sleeve; a first, radial bar fixedly mounted on and projecting from said shaft; a first, outer post mounted on the radially outer portion of said bar in substantially parallel, substantially opposing relationship with said center post; a second, radial arm projecting from said sleeve; a second, outer post mounted on the radially outer portion of said second arm in substantially parallel, substantially opposing relationship with said center post; a manually grippable, first handle fixedly attached to said sleeve and projecting laterally from the rearward end thereof; and a manually grippable, second handle, mutually offset relative to the first handle, fixedly attached to said shaft and projecting laterally from the rearward end thereof whereby application of manually applied torque to said handles

Abstract: A hand operated bending apparatus is provided for the bending of metal such as tubing and bar by the application of a force to a sweep lever arm cooperating with a preset pivoted force link, thereby urging the metal to follow the contour of a forming die and automatically terminating the bending action at a preset point by the disengagement of the force link from the metal bar.

Abstract: An apparatus for manufacturing a glazing panel which includes a pair of glazing sheets separated by an intervening marginal spacer frame formed to a required size and shape from strip material and marginally secured between the pair of sheets. The apparatus comprises a frame forming mechanism which includes guides defining at least two paths for feeding required lengths of the strip material, stops defining a position for the leading ends of the strip material as it is fed, a plurality of bending stations arranged to bend the strip material on at least one of the paths to form frame corner angles at required distances from the stops, and apparatus for joining the ends of spacer strip material which has been fed along the paths and bent, thereby to form the frame.

Abstract: A technique and device for correcting front end misalignment resulting from bent or twisted front axle assemblies which may be performed without dismantling the front end of the vehicle. The apparatus includes means for laterally clamping the axle assembly and means for applying a bending force to the axle at a position laterally displaced from that of the clamping means. A base assembly is utilized to support the axle at its normal height after the wheel has been removed. A novel breast plate is utilized to support the base of a horizontally disposed hydraulic jack which provides the desired camber correction. Preferred embodiments are particularly designed to be utilized with Volkswagen automobiles.

Abstract: The invention relates to an automatic control device for a bending machine for use in the production of loops of bar or wire material for concrete reinforcement. The device includes a preselector for preselecting the type of loop required and determines the sense of direction and amount of bending required in that loop-type. Additionally, a selector is provided for selecting the length of each side of the loop of the type selected by the loop-type preselector.

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: A pipe bender for bending pipes, comprising two pivotally interconnected levers. The first lever is provided with a pivot pin and a circular segment disposed coaxially thereto which defines the inside bend of the pipe to be bent, for which purpose a slot is disposed in the circular circumferential portion, and with a first outer support for the pipe to be bent. The second lever is provided with a fork having two arms which receive the pivot pin, and with a second outer support for the pipe to be bent. The bar of the first lever may pass during the bending operation between the arms of the fork in order to bend a pipe through an angle of 180.degree. (U-shape). To bend pipes of different diameters the circular segment is divided in two parts relative to its median perpendicular plane. These two halves are to be spaced apart by means of spacer means.

Abstract: A sheet metal forming apparatus is shown with a plurality of various size and shaped rollers. The rollers are substantially parallel with a first end being open, and a second end being rotatably anchored and extending through a stationary bearing housing. A slot is provided in each roller along its longitudinal axis for receiving metal to be bent therein. After inserting metal into the slot of one of the rollers, the roller is turned by a handle on the second end. The roller is pre-indexed to turn a predetermined amount so that the metal is bent against an adjacent roller through a fixed arc. Subsequently, the bent metal may slide off the open end of the roller. A small roller may have a supporting bar extending parallel thereto with a supporting plate on the end thereof slideably receiving the first end of the small roller for additional strength.

Abstract: Forming a corrugated corner piece or a plurality of interconnected integral corrugated corner pieces for forming corrugated, rectangular, expansion joints or bellows by placing a metal blank between a pair of specially constructed hinge plate members. Each hinge plate member comprises a plurality of adjacent elongated plates with the adjacent edges of the plates secured together by tubular hinge elements. The plates pivot together at spaced locations along their lengths, around zig-zag orientated hinge elements that are positioned to lay normal to the side edges of the plate members and interconnect separate parts of the plate members. The blank is placed between the two hinge plates, with the hinge plates being aligned. Aligned pairs of the hinge elements are then held together with the blank sandwiched therebetween.

Abstract: A rod and wire bending machine including at least one bending unit substantially including a fork member, which guides the wire or rod to be bent, and a disengaged bending pin rotating coaxially about the fork member for the bending of the rod. To obtain the rod-forward/backwardfeed, the fork member lodges a roller, operating in couple with an opposed roller in such a way, that the side edges of the opposed extremities of the fork member project from the roller forming two projecting extremities to cause the rod to move forward and backward between the projecting extremities and its said roller and an opposed one, while the rod is laterally guided by the opposed extremities of the fork member, in order that the bending pin has the capacity to effect bendings about one or the other of the pendants constituted by the two projecting extremities of the fork member.

Abstract: Apparatus for forming bends in the sheet material and including a bending unit with a fixed frame, female holding means for clamping the sheet in a vertical alignment, mobile tables for bending the sheet, which tables rotate on an axis parallel to the longitudinal axis of the apparatus on respective intermediary supports. Each intermediary support is independently moveable on the fixed frame from one position corresponding to a retracted position of the table to a second position which is a working position of the table. The intermediary supports and tables are independently operable.

Abstract: A cable bender includes two bending members rotatably joined together about a common pivot axis, one of the bending members having a hydraulic cylinder associated therewith such that force may be applied causing the piston shaft of the cylinder to extend and cooperate with a tie arm extending between the bending members to drive one of the bending members in a curved path about the pivot axis.

Abstract: An automatic bending apparatus for forming fasteners from metal wire strip, or bar stock includes a removable, axially movable, non-rotatable shaped central mandrel and a relatively rotatable faceplate mounting a bending pin disposed coaxially with the mandrel and independently axially movable relatively thereto. The apparatus includes a pair of shears positioned adjacent the mandrel along the path of movement of the stock and in advance of the mandrel and means for automatically feeding the stock. The invention is characterized in that the mandrel is substantially L-shaped and has a support rod and an arm with a U-shaped groove in the front face thereof through which the stock passes. The groove is dimensioned to closely receive the stock so that the supported portion therein is not deformed or bent during the bending operation and the external portion of the mandrel is shaped to define the curvature of the bent portions of the stock.

Abstract: A three-point, air-bending sheet metal bender comprising a pair of elongated U-shaped finger dies mounted parallel to one another is disclosed. The elongated finger dies are mirror images of one another (when appropriately aligned) and, prior to bending, are spaced from each other by an amount generally equal to the thickness of the sheet of metal to be bent. The elongated finger dies are laterally position adjustable such that the "finger" of one die is alignable with the "palm" of the other die and vice versa; i.e., the finger of each die is alignable with the palm of the other die. During bending, the "finger" die remains fixed and the "palm" die rotates. As the palm die rotates, sheet metal located between the two dies is bent. The direction of bending, with respect to the plane of the sheet of metal prior to bending, is determined by the die that is chosen to rotate.

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: A forming tool comprising a relatively rigid shank portion or holder mounting in bearing relation thereto and for limited rotation thereon an operating head. In the preferred embodiment illustrated the operating head is in the nature of a generally cylindrical body having a V-shaped notch. The formation of the notch in the cylindrical body produces thereon a pair of laterally spaced bearing surfaces for application to material to be worked, one of which functions as a fixing means and the other of which functions as a bending means.

Abstract: Apparatus for assembling a frame fabricated from magnetically attractable material forming a strip member, the apparatus comprising a base member, a first pair of arms pivotally mounted on the base member, and a second pair of arms pivotally mounted for movement along the base member. The first pair of arms include magnets for holding the center portions of the strip for movement therewith to form a first corner of the frame. After the first corner is formed, the second pair of arms pivot to move the outer portions of the strip toward each other to enclose the frame structure. Preferably, one of the second pair of arms moves before the other arm so that one end of the strip is engaged in the opposite end of the strip to secure the final corner. Additionally, one of the second pair of arms is provided with a magnet to position a magnetically attractable catch member relative to the frame for movement therewith.

Abstract: A bender and shaper for die cutters and perforators for the printing industry. The die cutters and perforators are generally an inverted "T" shape with the center leg of the "T" constituting the knife or perforator. The bender grips the side flanges of the "T" and with a swinging arm causes the cutters or perforators to be bent around the circumference of the wheel members employed to grip the side flanges. Various desired shapes of die cutters and perforators may be made without distortion of the cutting or perforating edges.

Abstract: The invention contemplates portable apparatus for use in hot-bending of tubular pipe, comprising a rigid triangular frame of connected legs wherein a forming-die platform is located near one corner of the frame, along with a back-up shoe support at the corner, so that pipe-support and bending may commence from said one corner, progressing in the direction of one of the adjacent sides of the frame. The bending forces are provided by a winch mounted on the same platform and utilizing block and tackle that has anchoring reference to one or both of the remaining corners of the frame. In a preferred embodiment, the frame legs which define the platform corner are truncated into halves, whereby the platform and its adjacent leg halves comprise one of two removably securable subassemblies.