Abstract: A forming tool for pipe ends with a fixing device holding the pipe and a flanging die acting on the projection of the pipe end, where the flanging die has a mandrel which can be driven into the pipe end. A forming die surrounds the mandrel. The mandrel and the forming die are held in a housing. A limiting die surrounding the forming die being provided.

Abstract: A thin walled body such as a container (1) is gripped at a holding station and tooling (10) is engaged to deform the wall of the body at a predetermined zone. The predetermined wall zone is co-aligned with the tooling (10) by means of coordinated movement of the tooling (10) (typically by means of rotation about a tooling axis) prior to engagement with the wall zone.

Abstract: The invention relates to a device for forming an end area of a workpiece (2), especially for cold press-forming an end area of a pipe, comprising two force transmitting elements (7, 9) which are guided in a common housing (3). The device is characterised in that a first pressure chamber (26) is located between the two force transmission elements (7, 9) and in that a second pressure chamber (28) is allocated to the second force transmission element (9). When the first force transmission element (7) is in the bracing position, the second force transmission element (9) can be displaced in relation to the first force transmission element (7) in order to form the workpiece.

Abstract: There are disclosed an expanded tube processing method and expanded tube processing apparatus of a cylindrical tube, for inclining an opening end portion of a work formed of the cylindrical tube of metal with respect to an axis of a work to perform tube expansion, in which in order to simply perform an expanded tube processing, a punch is disposed on an opening end side of the work of the metal cylindrical tube and the punch is inserted from the work opening end to perform the tube expansion on a work end. A punch 18 is inserted from the work opening end at a predetermined angle to a tube axis A of a work 6. During insertion of the punch 18, the punch 18 and/or the work 6 are moved in a direction Y1-Y2 substantially crossing at right angles to an advancing/retreating drive direction Z1-Z2 of the punch 18 to perform the expanded tube processing.

Abstract: A bending machine includes a base frame and arms hingedly coupled to the base frame. The arms include a jaw for clamping a workpiece to be bent. The bending machine also includes a shaft including eccentric shaft portions. The eccentric shaft portions couple the arms to the base frames and have a first eccentric axis and a second eccentric axis. The first and second eccentric longitudinal axes are spaced apart such that the arms rotate and translate as the eccentric shaft portions are rotated about the first eccentric axis. The shaft also includes at least one connecting shaft portion that interconnects the eccentric shaft portions.

Abstract: A method and apparatus for bending probe pins that is semi-automated and uses machine vision to eliminate human error.

Abstract: A modular endforming mechanism for modifying an end of a thin-walled malleable tube is herein disclosed. The modular endformer comprises a gripping module having a collet means for grasping a tube inserted into the gripping module. The gripping module may be coupled to one of an expansion module and a reducing/flaring modular. The expansion module is constructed and arranged to actuate a sizing mandrel, which is inserted into the interior of the end of a tube to expand the diameter of the end of that tube. A forming insert works in conjunction with the sizing mandrel to limit the expansion of the tube diameter under the influence of the sizing mandrel.

Abstract: A pipe flaring die has a central opening with a profile configured to reduce stress concentrations at the base of the flared portion of the pipe. The profile includes an annular relief area intermediate an annular gripping surface and an annular beveled portion which defines the angle of the flared portion. The relief area provides a longer transition distance for the formation of the flared portion which results in a reduced residual stress concentration created at the base of the flared portion during the forming process.

Abstract: A flanging or hemming device (1) is provided with an external flanging unit (6) and/or an internal flanging unit (7) as well as a clamping device (3). The clamping device (3) has one or more leading pressing and clamping elements (71) which are movable or deformable and can be adjusted in accordance with the place or time and/or force with which they act on the workpiece or work-pieces (9). The pressing and clamping elements (71) are notably elastically deformable. They can also comprise a spring (72) or be fluidically pre-stressed.

Abstract: The press has a punch that slides in a punch-guide, and a ram that slides in a ram-guide, ther respective lines of action forming a T-configuration, whereby one unidirectional stroke of the ram-head provides a complete in/out stroke of the punch. The ram is driven by a prime-mover, which may be a hydraulic ram coupled directly to the ram-head, or preferably is a ball-screw-jack operated by an electric servo motor, under computer control. The ratio between the prime-mover and the ram-head remains constant throughout the stroke of the ram-head.

Abstract: Apparatus for swaging a ferrule or ferrules onto an outer wall of a cylindrical member includes a hydraulic power section and an adapter tool. The hydraulic section is disposed within a housing, and the adapter tool is at least partly retained in the housing and also is fully removable from the housing without affecting the hydraulic power section of the apparatus. The hydraulic section includes a piston that is moved under force of hydraulic pressure applied thereto from a hydraulic pressure source. The adapter tool includes a driven swaging die that is moved from a retracted position to an extended position in response to movement of the piston. The sleeve and anvil are releasably secured together so that the adapter tool can be removed from the housing as a unitary assembly. Size changes can be accommodated by removing a first adapter tool of a given size and replacing it with a second adapter tool of a different size.

Abstract: A process for cold forming the ends of metal tubes to reinforce same includes a die cavity into which the tube is placed. The die cavity includes a section with a recess having a greater diameter than the tube. The tube is placed such that a portion is left outside of the cavity and a mandrel is inserted into the tube. The mandrel includes a section that is adapted to bear against the portion of the tube outside of the cavity and to deform same. The deformation process results in the tube being folded upon itself within the recess in the cavity thereby forming a reinforcing flange at the end of the tube. The process is conducted without heating the tube.

Abstract: An assembly for retaining a work piece and fitting together for placement in a swage machine. The assembly includes a die and a collar to keep the work piece from moving during the swaging process. The collar includes two clamping sections that are connected together, such as by a hinge. The collar is placed about the work piece and then clamped in place by a retaining bolt at the opposing end of the clamping sections. The die includes a recess for holding the collar and a recess for the tube. The assembly includes an anti-rotation feature to minimize rotation of the collar within the recess. One example of an anti-rotation feature is the formation of the recess and the collar in corresponding hexagonal shapes. The die may also include a recess for retaining a fitting to be swaged to the work piece. The die and collar assembly eliminates the need for nylon inserts and eliminates work piece rotation and axial movement during the automated swaging process.

Abstract: To readily perform a repairing work for a deformed portion of a rim without any adverse effects given by a rim shape of a wheel or a kind of the wheel, and to enhance the precision of the repairing work and the simplification of the apparatus by devising a receiver for a reactive force of a pressing jack, a wheel repairing apparatus includes a base (2) on which the wheel H is to be mounted with its axis vertical, a support frame (3) provided on the base, supporting means (A) provided between the support frame and the base for rotatably supporting the wheel about the vertical axis and pressurizing means (B) for pressurizing the deformed portion of the rim (R).

Abstract: There is described a new bending blade for sheet metal bending machine, that in order to allow the bending of the sheet metal both upward and downward comprises two bending teeth extending from a single body of blade in directions orthogonal to each other. One of the two teeth extends substantially upward for the execution of upward bending, while the other tooth extends substantially in horizontal direction for the execution of downward bending.

Abstract: To produce a flanged pipe unit, a separate flange is put on a pipe and then the pipe is subjected to a punching to achieve an interlocked connection between the flange and the pipe. The flanged pipe unit produced by the method of the invention comprises a metal pipe including a larger expanded portion, a smaller expanded portion and a raised portion which are axially aligned so that the smaller expanded portion is placed between the larger expanded portion and the raised portion; and a metal flange having a through bore through which the pipe passes, the through bore including a larger diameter portion, a smaller diameter portion and a tapered end portion which are axially aligned so that the smaller diameter portion is placed between the larger diameter portion and the tapered end portion.

Abstract: Bending machine for sheet metal panels with high edges, comprising a counter blade fixedly mounted to a stationary base, a mobile blank holder placed above the counter blade, a turnable support for blank holder that is hinged to said stationary base, first moving means connected with the turnable support in order to control its rotation with respect to the stationary base, the blank holder being connected with the turnable support in such a way so as to be able to slide upward and downward with respect to it and second moving means are provided that are suitable to control the sliding of the same blank holder with respect to the turnable support.

Abstract: The invention relates to process for working a workpiece (1) held between a counterholder (4) and a guide (5, 5.2) by a clamping force (14.1, 14.2) by forming a profile (3, 3.1), e.g. precision toothing, in a surface (2) of the workpiece (1) by means of a forming element (8, 8.2), the forming element (8, 8.2) being guided toward the surface (2) of the workpiece (1) at an acute angle (w) to the clamping force (14.1, 14.2) or with a rotary/thrust movement.

Abstract: A modular endforming mechanism for modifying an end of a thin-walled malleable tube is herein disclosed. The modular endformer comprises a gripping module having a collet means for grasping a tube inserted into the gripping module. The gripping module may be coupled to one of an expansion module and a reducing/flaring modular. The expansion module is constructed and arranged to actuate a sizing mandrel, which is inserted into the interior of the end of a tube to expand the diameter of the end of that tube. A forming insert works in conjunction with the sizing mandrel to limit the expansion of the tube diameter under the influence of the sizing mandrel.

Abstract: A hemming steel constructed to fold or hem a flange of an outer sheet metal panel onto an inner sheet metal panel has a forming face with a first, generally flat section and a second section inclined to the first section to provide a finished, hemmed flange having an outer portion closed or folded flat onto the inner sheet metal panel and an inner portion adjacent to the fold line which is inclined to the outer portion providing a reduced radius of the fold line bend. The second section of the hemming steel is preferably generally planar such that the inner portion of the hemmed flange is generally flat and provides an outer bend diameter along the fold line of the outer sheet metal panel which is less than three times the thickness of the sheet metal panel and may be approximately equal to or less than the thickness of the outer panel.

Abstract: The movable blank-holder (16) of a bending press comprises a series of sections (26, 28) and a pair of motor-driven carriages (42) each of which has an entraining member (44) which can selectively engage and release the sections (26, 28) in order to move them for re-arrangement purposes. Each of two sections (28) situated at opposite ends of the series comprises a shoe-holder body (48) which supports a respective shoe (50) by means of inclined guides. Each shoe-holder (48) carries a respective slide (56) having a driving portion (60) and each shoe (50) has a driven portion (64). These driving and driven portions have formations (62, 64) cooperating with one another directly with a shaped coupling with a single degree of freedom, arranged in a manner such that movements of the slide (56) are converted into oblique movements of the respective shoe (50) for releasing it from and engaging it with a lateral channel-shaped bend which has already been made in a sheet-metal panel, without sliding on the panel.

Abstract: The movable blank-holder of a bending press includes a series of segments and a pair of motor-driven carriages each of which has an entraining member which can selectively engage and release the segments in order to move them for re-arrangement purposes. Each of two segments situated at opposite ends of the series includes a shoe-holder which supports a respective shoe by means of inclined guides. Each shoe-holder body carries a respective slide having a driving portion and each shoe has a driven portion. These driving and driven portions have facing cooperating pressure and sliding faces arranged in a manner such that a movement of the slide towards the center of the press is converted into an oblique movement of the respective shoe such that it is released from a lateral channel-shaped bend already formed in a metal sheet, without sliding on the sheet.

Abstract: A method for forming a pipe includes providing a tubular workpiece having an upper portion and a lower portion; forming a tapered hole in the inner wall of the upper portion of the workpiece and forming an annular shoulder on the outer wall of the upper portion of the workpiece synchronously by cold forging operation; forming a plurality of teeth on the outer wall of the lower portion of the workpiece by a turning-machining operation, thereby forming the pipe which includes the tapered hole, the annular shoulder, and the teeth; and finally reinforcing the pipe by carburizing treatment.

Abstract: An automated crimping machine for crimping a fitting or end connector onto an end of a cable is made up of segmental die portions which together form a die surface in the desired configuration including cylinder-operated pivot blocks to advance the segmental die portions between an open position and closed crimping position, a plunger assembly axially spaced from the die portions to support the fitting in loosely assembled relation on the cable and to automatically advance in an axial direction into the cavity formed by the die surfaces to cause the fitting to be crimped onto the cable end, following which the segmental die portions are expanded away from the fitting and the crimped fitting removed to permit insertion of the next fitting and cable which is advanced through a guide block into properly aligned relation with the plunger.

Abstract: An apparatus for shaping panel-shaped workpieces uses an hourglass-shaped roller as bending tool. The workpieces are clamped between a first and a second tool. The second tool has a holding-down surface. Superimposed vertical side surfaces of the tools are offset by a horizontal dimension X, which corresponds at most to five times the thickness of the panel-shaped workpiece. The second tool is inclined and forms a further vertical surface in a region in which the panel-shaped workpiece is shaped into a comer and in which the tool does not cover the workpiece.

Abstract: An apparatus (1) serves to bend a hollow section (2) with which a spacer frame for insulating glass sheets is to be manufactured. For this purpose, the hollow section (2) can already be filled with drying agent during bending or, however, still be empty. The bending apparatus also has, in addition to a bending tool (11) and an abutment (13), a hold-down clamp (17) for impinging upon a side band (6) and/or a flange (10) whose cross section continues internally, and parallel thereto a support (16), so that the external proportions of the hollow section (2) remain precisely preserved even in the bending area (4). In order to support thereby the bending motion and the deformation, as well as the flow of the material of the hollow section (2) and its side bands (6)/flanges (10), the hold-down clamp (17) is subdivided and has an element (171) co-rotatable with the bending motion in the bending direction, which supports the change of direction of the side band (6)/flange (10) during the bending operation.

Abstract: A processing machine for plate-like workpieces, especially a bending machine, which has a strip-like vise holder (5) as a workpiece support for supporting the workpiece (1) to be processed and a hold-down device (3) which is subdivided into individual segments (4) which are movable relative to one another in the direction of the bending line, and preferably are also interchangeable in order to be able to be adaptable to differing dimensions and shapes of the workpiece (1) to be processed. In this way, the edges (1a) on a workpiece (1) can be bent such that they can form undercuts, but the separation of this workpiece (1) so processed from the hold-down device (1) nevertheless remains possible.

Abstract: An apparatus for straightening portions of a plurality of purlins of a roof structure which have been moved from an original position to a deformed position and a method of using the same is disclosed. A carriage is provided which is mounted for movement along the length of the purlins in a downstream direction. The carriage has a plurality of guides which are positioned adjacent the plurality of purlins in the deformed position. A purlin straightening device attached to the carriage moves the carriage in a direction lateral to the length of the purlins so that the guides move the portions of the plurality of purlins from the deformed position to the original position.

Abstract: An offset conduit bender has a pair of shoes which are pivotally connected to one another so that axes of the shoes remain parallel. Each shoe has a specially shaped groove in it for receiving a tube inserted into the grooves and which support the tube as the tube is bent. The grooves also have straight sections for quickly inserting a tube into the grooves from the side of the grooves. The amount of offset is accurately adjustable by a stop which is provided beneath the movable one of the shoes and the axial position of the offset relative to one end of the tube is accurately adjusted by another tube end stop. In addition, inner and outer tube deburring tools can be provided on the bender, and the bender is preferably mounted on a portable cart.

Abstract: A rod driver gear for a tubing expander is operable to drive a rod having a circumferentially extending outer surface with a plurality of grooves extending traversely across a longitudinal axis of the rod. The rod driver gear includes an annular body rotatably mounted to a frame of the tubing expander and connected to a power source of the tubing expander. The annular body has a ridged outer diameter surface. Each ridge of the outer diameter surface is dimensioned to extend into the grooves of the rod to sequentially engage the grooves of the rods when the power source rotates the annular body to thereby move the rod along the longitudinal axis of the rod. In a preferred embodiment, the outer diameter surface of the annular body has a plurality of grooves extending across the surface, and a plurality of pins are inserted through a bore into the grooves. A portion of the pins extends from the grooves to constitute the ridges.

Abstract: A tube beading apparatus for cold forming an annular external bead on a metal tube, the apparatus having a clamp to secure the tube, a beading die to form the bead and a powered ram to advance the die against the end of the tube. The beading die has a tube receiving channel surrounding a central mandrel which extends past the forward wall of the beading die, with the mandrel sized to fit into the bore of the tube to prevent deformation of the bore and with the tube receiving channel sized equal or smaller than the outer diameter of the tube, so that when the die is forced onto the end of the tube the tube wall is deformed into the annular bead. The shoulder of the clamp aperture holding the tube and the shoulder of the tube receiving channel are rounded to properly form the bead.

Abstract: A device for bending hollow-section strips (12) with clamping and guiding jaws (20, 21). A bending support (1) is provided, which consists of two bending support parts (2, 3) that engage between clamping and guiding jaws (20, 21). Bending support parts (2, 3) are independent of the clamping and guiding jaws (20, 21), which can be adjusted in the bending plane relative to the clamping and guiding jaws (20, 21). One bending support part (2) is mounted on a support (4) and the other bending support part (3) can be shifted, relative to the bending support part (2) that is mounted on the support (4), in a direction (arrow 5) that is perpendicular to the bending plane, whereby a movable bending support part (3) is under the action of a spring (9), which urges it away from the bending support part that is mounted on the support (4). Thus, the bending support (1) is automatically adjusted to an effective width that corresponds to the width of the hollow-section strip (12).

Abstract: Flanges are forming simultaneously around multiple holes in a sheet metal part with a press in which multiple sets of tooling are mounted on a pair of plates fastened to the top and bottom platens of the press. The plates have guides for ensuring that the plates, and the tooling on the plates, are aligned when the plates are brought together by closing the press. The tooling includes dies attached to die holders on the upper plate, and punches attached to punch holders on the lower plate using attachments that permit a small lateral movement of the dies and the punches on their holders so that the punches can self-align with the holes in the part when the part is fit onto the punches, and so that the dies can self-align with the punches when the press closes.

Abstract: A method and a portable tool for hydraulically upsetting a steel reinforcement bar (e.g. rebar), one end of which is typically embedded in a concrete or similar structure, so that a relatively wide upset head can be formed at the protruding end to permit the bar to be reliably coupled to an opposing reinforcement bar. The protruding end of the reinforcement bar is first pre-heated and then inserted within the upsetting tool to be clamped between a plurality of articulating jaws. A pair of hydraulic pistons are driven in a first direction through a respective pair of tandem cylinders to correspondingly drive an upsetting block towards and into engagement with the pre-heated end of the reinforcement bar so as to compress the pre-heated end between the jaws and the upsetting block to form the upset head.

Abstract: A punch and die assembly includes a punch plate that is displaced in a selected direction of travel to carry the punch toward the die. The punch simultaneously moves laterally with respect to the punch plate and moves rectilinearly divergently away from the direction of travel of the punch plate.

Abstract: A method that produces an inexpensive and high-quality male side pipe by forming a seal groove for holding an O-ring only by means of press machining is disclosed. A male side pipe is pressed to form an expanded part at an intermediate part thereof. This expanded part is pressed to form a bulge part. Furthermore, the portion of the male side pipe from a tip end to an intermediate part of the bulge part is contracted to form a seal groove side face and a seal groove bottom face at the side of the bulge part. In addition, the portion, of the male side pipe from the tip end to the point S is pressed for thinning to facilitate the machining on male side pipe. Then, the thinned portion is widened to form a seal groove side face at the side of the tip end. By forming the seal groove side face roughly perpendicular to the axial direction of the male side pipe during these processes, the askew assembly or slanting of the O-ring can be prevented.

Abstract: A metal rod (20) having a conical or pyramidal cut extremity (20a) is used to make a mandrel for blind rivets. The rod is held in place between a pair of die segments (11) such that its end (26) of a preset length, including the tip protrudes from an upper surface (14) of the segments. Subsequently, a free intermediate portion of the swageable end (26) is axially compressed to form a mandrel head (27) by a punch (12) which has a lower face (17) parallel to the upper surface (14) of the segments with a conical or pyramidal recess (18) formed on the end. The free intermediate portion of the swageable end (26) swells radially outward to form the head (27) having a flat flange (31) from which the tip intrudes. The mandrel, which has the head formed uniformly without any eccentricity about the longitudinal axis of a mandrel body, can be produced inexpensively using a prior art nail manufacturing apparatus.

Abstract: A method and apparatus for forming a head, having a controlled predetermined shape on an end of an elongate member, such as a wire, which is formed into a fastener, where an end portion of the wire is secured in a predetermined position and axially compressed so as to expand a predetermined amount of wire material radially outwardly and thereby form the head on the wire, and where material flow is directed during axial compression so as to provide the controlled predetermined shape of the head.

Abstract: A wheel repair stand includes a frame with a pair of horizontal support beams to support a turntable. A wheel may be mounted on the turntable and radial forces applied by an extensible tool between the frame and the wheel rim. The wheel may be rotated on the turntable to allow the force to be applied at the desired location.

Abstract: A reduced resistance bead seal is integrally formed on a mounting surface of one of two matingly engageable members to form a leak-free seal between the two members despite any eccentricity or angular variances between the two members. In one embodiment, the reduced resistance bead is formed on an inner conical flange of an inverted flared end of a hollow fluid conduit. The bead presents a deformable surface as a fitting urges the flared end of the conduit into engagement with a conical seat in a receiver where eccentricity or angular variances exist between the flared end of the conduit and the conical seat. A unique method and a unique forming tool are used to form the reduced resistance bead in the flared end of the conduit simultaneously with the flaring of the end of the conduit.

Abstract: Apparatus for straightening and orientating the deformed nipples of an anode employs framework through which each anode suspended by its anode rod is passed. A hollow casing with openings for receiving the nipples is raised relative to the framework to locate the nipples in the openings. A yoke of the anode is supported by pressure-pieces driven by self-locking spindle drives to engage the yoke from the outside and by support members engaging the yoke from the underside. The casing carries mechanisms each composed of piston and cylinder units with the piston rods and cylinders interconnected by yokes. One of these yokes has recesses for applying force to a central nipple and the other of these yokes carries a force-applying element with a socket for receiving the outermost nipples. The yokes and force applying elements are guided within the casing and serve to bend the nipples back into the desired orientation. Stops serve to control and limit the displacement of the piston and cylinder units.

Abstract: Apparatus is provided for bending hosels of metal wood golf club heads to alter the characteristics of golf clubs incorporating the heads. A club head is clamped into a rigid clamping framework using a pair of clamps which engage the top and the back of the club head. A bending bar having an adjustable throat for engaging the hosel of the club head is then used to bend the hosel as required. The throat of the bending bar is defined by material which is softer than the golf club head to substantially eliminate marring of the club head. The back of the club head is engaged by an elongated pad of polymeric material formed to receive the back of the club head and the top of the club head is engaged by a pair of club head gripping areas formed to spread the top head gripping forces over two relatively large areas. The top gripping areas are formed as a single polymeric pad which is bifurcated to define the gripping areas.

Abstract: A pipe crimping apparatus comprises holding means to externally engage and hold a joint formed by locating one end of a pipe connection onto a pipe end, the holding means having a crimping tool movable relative to the swaged end to cause the swaged end to be deformed and crimped onto the pipe end. In a preferred embodiment, the holding means is elongate and at one end thereof has a gripping zone to engage behind the inner side of a swaged end of the pipe connector, and at the other end thereof the crimping tool is movable longitudinally and internally of the holding means. Means are provided to cause axial movement of the tool towards the gripping zone so to engage the outer side of the swaged end and crimp it to the pipe end.

Abstract: A method of forming a receiver tube for a motor vehicle trailer hitch assembly. The method involves a forming operation in which a length of square tube stock is mechanically formed to define a reinforcing bead around the hitch receiving end of the tube. The process further partially forms and sizes the inside surface of the tube. The resulting receiver tube improves over prior art multi-piece constructions in terms of appearance and corrosion resistance.

Abstract: This invention relates to a tool position controller of a bending machine which can control a bending angle at an arbitrary portion during a bending work. The upper part of this controller is divided into two plates (5a,5a) by groove in a longitudinal direction. The controller includes a die (5) which has a reversed plate support (9) fitted inside a groove (5b) defined between these two plates, die push-up means (10, 11, 12) disposed at at least one position in the longitudinal direction of the die below the die, and feed quantity control means (13, 14, 15) for controlling the feed quantity of the die push-up means on the basis of a machining condition that has been in advance inputted. A work (40) is held under pressure between a punch (8) fitted to the tip of a ram (7) moved vertically by a pressure holding cylinder (6) and the reversed plate support (9) described above and is subjected to the bending work when the die is pushed up through the push-up means.

Abstract: A substantially continuous tube-pulling operation is performed through the use of a plurality of pulling deivces, each of which is designed to partially pull a tube from its associated holder. By operating the pulling devices in a consecutive and repetitive fashion, the tube can be completely stripped from the holder in a single continuous operation.

Abstract: A hydraulic chuck device for enlarging the end of a tube, which includes a chuck body having first and second inlets for a source of fluid under pressure. The device has a tube receiving end where the tube to be enlarged is inserted. Also included is a piston mounted in the body which is adapted to move toward the tube receiving end upon introduction of fluid under pressure to the first inlet and away from the tube receiving end upon introduction of fluid under pressure to the second inlet. The piston has a tube engaging sizing ball on one end for enlarging a tube inserted into the tube receiving end of the body when the piston moves toward that end. Also provided are collets mounted in the body at the receiving end to engage the tube and prevent movement thereof with respect to the body. The collets are cooperatively attached to the piston to engage and release the tube as the piston moves toward and away from the tube receiving end.

Abstract: A mechanical expander for tubing for heat transfer products. The tubing expander includes one or more elongated rods, each having an enlargement on the forward end thereof for insertion into tubing to be expanded. The rods are supported on a carriage which in turn is slidably mount on a frame. The carriage is driven forwardly and rearwardly along the frame by a hydraulic motor operably coupled to the carriage by a continuous chain. Elongated tubes which are respectively fixedly attached to a cross member and which respectively partially surround the rods limit lateral or bowing movements of the rods. There are clamping jaws mounted on the frame for clampingly holding the ends of the tubing to be expanded.

Abstract: Apparatus for clamping and working wire pieces has two separate rotary shafts (16) of the clamping levers (18 and 20), arranged symmetrically and with the axis of intake of the wire (82) and the direction of upsetting or hammering at right angles to the axes of rotation of the levers and to the axis of the cam shaft (34), the said direction (82) intersecting the said shaft (34) and passing centrally between the two rotary shafts (16), and on the other hand in directly controlling the clamping levers (18 and 20) by frictional connection rising one or more than one cam (32) on the cam shaft (34) and one cam roller (30) for each cam, the said roller (30) being situated on the lever arm (26 or 38) remote from the tools, the frictional connection being provided by a frictional connection maintaining device (54) which keeps the roller (30) in contact with the cam (32).

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.