Abstract: A linkage for controlling the removal of a workpiece from a press by controlling the timing between the workpiece support apparatus and the ram as it is raised and lowered. The linkage is connected to the ram in such a manner that the supporting apparatus has an adjustable dwell which can be adjusted by adjusting the length of both the linkage as well as a rod connected between the ram and the linkage.

Abstract: A transfer feed mechanism, for use in a power press, is disclosed. The feed mechanism comprises multiple finger units for moving successive workpieces along a plurality of different axes so as to transfer the workpieces to desired work stations in desired positions and attitudes. The feed mechanism includes a power takeoff from the main drive of the power press, a plurality of drive means connected to the power takeoff for driving the finger units along the different axes in synchronism with the power press, and a secondary drive motor for driving the finger units along at least one of the axes independently of the power takeoff. The drive means includes at least one differential mechanism connected to both the power takeoff and the secondary drive motor to permit the finger units to be selectively driven by either the power takeoff or the secondary drive motor.

Abstract: A continuously running mechanical transfer press includes a workpiece transfer system in which electric motors are used to provide reciprocating movements in the clamp, lift and transfer axes. An independent backup tracking system including a fault detection sensing control is provided which utilizes independent measures of the position of the workpiece transfer system in all three axes along with an independent measure of the position of the press die in its cycle to monitor proper synchronization and operation of the workpiece transfer system. The fault detection system indicates a fault in the event the transfer system loses synchronization with the moving die, in the event two separate measures of die position are not in agreement, or in the event the transfer system fails to maintain parallelism of the two transfer rails included in the system. The press is stopped in response to detection of a fault to protect the press and the transfer system from damage.

Abstract: An apparatus for patterning a cylindrical surface comprises a punch held by a holder connected to an arm which is pivotally mounted to permit the punch to strike the cylindrical surface. The cylindrical surface is mounted on a spool which can be rotated relative to the punch. A platform supporting the pivot point for the arm engages a worm gear which can be rotated to translate the platform along the length of the worm gear. The apparatus further comprises at least one source of pressurized fluid, a plurality of pairs of pressure chambers, a piston slidable between each pair of pressure chambers, a dual action on/off valve connecting the pressure source with one of the pressure chambers of each pair, a plurality of restriction valves for regulating the flow of pressurized fluid to each of the pressure chambers, and a programmable controller having a plurality of input and output leads, a plurality of timers, a plurality of counters, at least one high speed counter, and at least one reverse counter.

Abstract: A conveyor in a plastic working machine, wherein lower dies and upper dies for plastic working of a work in collaboration are disposed on a plurality of working stations, respectively, the stations being set at intervals along the direction in which the work is conveyed, arms each having a handling mechanism for holding the work are provided on transfer bars disposed sideway of the working stations for conveying the work in sequence among the working stations, the transfer bars are provided on both sides of each working station, the arms are bridged between both the transfer bars with both the ends borne on both the transfer bars movably back and forth in the conveying direction or fixed to both the transfer bars.

Abstract: In crimping pliers for connecting contact elements to electrical conductors, which crimping pliers consist of a grip, a retaining plate, which is fixed to the latter and has a lateral recess accommodating the contact elements, on the upper side of which recess cutouts are made which interact with the crimping stamps which project at the upper side from a workplate displaceably guided in the retaining plate, on which workplate a hand lever is pivoted, the tightening movement of which displaces the workplate relative to the retaining plate and moves the crimping stamps into the open cutouts, a housing is fixed to the workplate in order to automatically feed a sheet-metal strip, which supports contact elements at intervals and has mating holes, and a linkage mechanism is pivoted on the hand lever.

Abstract: This invention relates to a cold forming process wherein a consistent stitch tongue profile is swaged into a planar throat plate blank. Thereafter, excess material resulting from the cold forming process is removed and the required needle holes and thread slots are provided in the blank.

Abstract: In the automatic transport of workpieces in drop-forging presses, the workpiece is moved by a transporting device from one die to the next die in accordance with strokes. The dies are kept clean by blasting and spraying. Two dies are located at each work station and used for the same operating step of the transport mechanism. The transporting includes two respective pairs of workpiece gripping members and has a transport path corresponding to the distance between the different work stations. The output of the press is doubled since it is possible to carry out simultaneous cleaning of the tools by blasting and spraying for each operation of the press.

Abstract: A jaw assembly is made retractable away from a power press in order to facilitate die change. A main carriage is cammed toward and away from the press dies in synchronism with the operation of the press. Mounted on the main carriage is a subcarriage which is also slidable toward and away from the press relative to the main carriage. The jaw assembly is mounted on the subcarriage. Thus, during die change, the jaw assembly can be held retracted away from the press as by a fluid actuated cylinder acting between the main and subcarriages. The jaw assembly typically comprises a pair of gripping jaws mounted on the piston rod of a fluid actuated cylinder on the subcarriage. When retracted, the jaw assembly does not interfere with the dies being changed.

Abstract: A method and apparatus is provided wherein a pressed material is withdrawn from a lower metal mold in a press in accordance with a horizontal, pivotal movement and a vertical, linear movement of a carry-out arm, and a material to be pressed is fed from a preceding stage to the press in accordance with a horizontal, pivotal movement and a vertical, linear movement of a carry-in arm. In this method of feeding a material to be pressed, the height of a path along which the carry-out arm is turned is set greater than that of a path along which the carry-in arm is turned. The operations of the carry-in arm and carry-out arm are timed in such a manner that a material being newly fed and a pressed material being removed are overlapped as they are vertically spaced at a predetermined distance from each other, in a position above a lower metal mold in the press.

Abstract: Blanks of noncircular, especially polygonal (e.g. heptagonal), outline are fed to a die-stamping press of an embossing plant such as a mint by means of a turntable with radially oriented transport plates projecting beyond its periphery at angularly equispaced locations. Each transport plate has an outwardly open recess with inner edges conforming to part of the blank outline and with two substantially parallel jaws spaced apart by the maximum width of the blanks, the depth of the recess being less than this maximum width to let an inserted blank protrude by one corner in an incorrect position and by two corners but to a lesser extent in a correct position.

Abstract: A grip-feed machine for gripping a material in the form of strip or the like and feeding the gripped material in a bending machine which has a sun gear, comprising: a guide bracket having a guide shaft securely received therein; a cradle member having lower and upper portions and movable axially forwardly and backwardly on and along the guide shaft and formed at the lower portion thereof with a rack gear in parallel to the guide shaft; a gripping mechanism for gripping the material and feeding the gripped material in the forward and backward directions of the guide shaft; a pinion gear held in mesh with the rack gear of the cradle member; a direct current servomotor for driving the pinion gear to rotate about an axis thereof; an angular position detector having mounted thereon a detecting gear which is held in mesh with the sun gear and adapted for detecting the angular position of the detecting gear to produce a pulse signal indicative of the angular position of the detecting gear; and control mechanism for

Abstract: A transfer device for transferring workpieces progressively from station to station in a press by means of mechanical linkages actuated by the press ram. The linkages are uniquely configured and constructed to provide substantially unobstructed access to the stations. A clutch mechanism is provided that resiliently disconnects the linkages in the face of a predetermined resistance in order to prevent damage in the event of the jamming of a workpiece. At least one of the linkages is constructed as a unitized assembly for ease of installation. Brake means and lift and carry features may also be included in the transfer device.

Abstract: An apparatus is provided for performing multiple operations on a conventional open-die forge press, and includes a rotatable top punch assembly and stationary bottom die assembly. The top punch assembly includes a mounting fixture secured to the press crosshead, a holder plate rotatably mounted on the fixture, a plurality of punches extending downwardly from the holder plate, and motor means for indexing the punches sequentially into forging position over the bottom die assembly. A method is also provided for making valve pots, including upsetting a heated metal block in a split die and punching a hole through the block, the improvement in which during the upsetting step a vertically reciprocable member is extended so as to close a bottom opening in the split die, in order that the split die will function as a closed die, and during the punching step the reciprocable member is retracted so as to allow a punch-core to fall through said opening.

Abstract: A method for manufacturing a box-shaped door, which comprises the steps of cutting off the four corners of a rectangular metal blank in the square form to provide the four walls of a box body; vertically bending said cutoff four sides by a female die on whose inner wall there are provided in the stepped state an upper bending section and lower shaping section and a male die whose outer wall is shaped complementary to the inner wall of said female die; curvedly shaping the abutting edges of the corners of the four sides of the metal blank, said vertical bending and curved shaping being carried out at the same time; and welding said abutting edges to provide the box body of a box-shaped door.

Abstract: An apparatus for manually shifting a transfer bar of a transfer press between a first or advanced position and a second or retreated position. The apparatus is mounted on a moving bolster and comprises a frame and a sliding member slidable between the first and second positions and carrying a transfer bar thereon. A lever is pivotally mounted at its base end to the frame and the leading end of the lever has a roller rotatably mounted thereto. The roller is adapted to move vertically guided by a guide member mounted to the under surface of the sliding member as the lever pivots on its base end. A spring is provided for helping the movements of the transfer bar between the first and second positions.

Abstract: A machine for finishing substantially cup-shaped blanks that are to comprise the bodies of saucepans or the like has a table on which the blanks slide horizontally, bottom wall down. They are advanced along the table from station to station by a shuttle conveyor comprising opposite horizontal clamping plates that converge edgewise to engage opposite side wall portions of blanks, move forwardly while converged, then diverge and move rearward to an idle position. At one station there is a hole in the table, and each blank is delivered concentrically onto a freely rotatable tail stock which is in a lowered position in said hole with its top surface level with the table surface. The tail stock rises to clamp the bottom wall of the blank against a concentric continuously rotating driver head spaced above the table.

Abstract: A rotary transfer press comprising a bed; an upright extending upward from the bed; a crown mounted on the upright and providing a plurality of stations between the crown and the bed in an annular arrangement; a slide upwardly and downwardly movable by being guided by the upright; a feed bar having clamps corresponding in number to the number of the stations and provided around the upright for transferring workpieces from station to station in succession; a slide drive disposed in the crown for moving the slide upward and downward and comprising a main shaft coupled to a main electric motor to rotate at a reduced speed, eccentric rings coupled to the main shaft to rotate at a reduced speed and connecting rods connecting the eccentric rings to the slide; a feed bar lifting drive having a lift cam coupled to one of the eccentric rings and adapted to be actuated by the lift cam for moving the feed bar upward and downward; a feed bar feeding-drive having a feed cam coupled to one of the eccentric rings and adapte

Abstract: This invention provides a collar making apparatus having an integral notcher capable of forming a flat sheet of metal into a cylindrical collar. The notcher includes a stationary die and a ram mounted for reciprocation which includes a punch that cooperates with the die to stamp a notch in the sheet. The notcher further aligns a sheet to be punched and a control automatically operates the ram when a sheet is in the proper position for punching. From the notched sheet, the apparatus forms a channel along one side edge, forms the sheet into a circular configuration, and crimps the other side edge of the sheet.

Abstract: A multi-station strip metal forming press has a safety release mechanism for the transfer slide to protect the press components in the event of a jam or internal breakage. A press frame has a plurality of horizontally spaced work stations and supports a vertically reciprocable ram; a plurality of tools carried by and movable with the ram, positioned to be operatively disposed at the stations and cooperate with dies thereat to perform work on workpieces positioned at the work stations. A horizontally movable transfer slide and associated transfer rails are provided for carrying workpieces sequentially in a predetermined manner to the stations. A powered mechanism reciprocates said transfer slide and ram in timed relationship. A safety release mechanism for the transfer slide operatively disconnects the powered mechanism from said transfer slide on the occurrence of a jam anywhere in the press regardless of the point in the cycle of press operation or position of the jam and causes the transfer slide to stop.

Abstract: An inverted press for producing multiple drawn metal containers combines in one press the functions of cupping and drawing presses. The press includes a blanking and cupping station and several drawing and redrawing stations, disposed one adjacent the other and rendered serially operative by a vertically reciprocable slide assembly. At each stage of operation the material, semifinished article or finished article is under complete control. A method for producing a drawn container by multiple forming and reforming of a drawn article, is also provided.

Abstract: A feed bar driving apparatus for a transfer press. A pair of carriers is located at each of the ends of two parallel feed bars. The carriers each have vertically movable feed bar receptacles thereon for holding the feed bars for permitting them to slide freely in the direction of their length while restricting their movements in the lateral direction and move toward and away from each other in clamping and unclamping movements. A rack mechanism between the carriers has a rack attached to each carrier, a pinion engaging each rack and located at positions between the corresponding carriers and the center of the space between the carriers, and an even number of idler gears connected between the pinions for driving the pinions in opposite directions of rotation. A cam carrying slide member slides reciprocally on the press.

Abstract: An inverted press for producing multiple drawn metal containers combines in one press the functions of cupping and drawing presses. The press includes a blanking and cupping station and several drawing and redrawing stations, disposed one adjacent the other and rendered serially operative by a vertically reciprocable slide assembly. At each stage of operation the material, semifinished article or finished article is under complete control. A method for producing a drawn container by multiple forming and reforming of a drawn article, is also provided.

Abstract: A gear rack pivotally mounted on the ram of a metal working press extends downwardly at an angle to the vertical in driving relation with a laterally offset drive gear on a device for transferring workpieces to successive stations in the press.

Abstract: A rotary transfer press apparatus wherein a plurality of workpieces are simultaneously and progressively moved over a circular path through a series of working stations which themselves are arranged in a circular path whereby successive operations are performed on each workpiece to obtain a finished product for each cycle of the press.

Abstract: A stock lifter for supporting and guiding strip stock materials during progressive die operations, and wherein the stock lifter has an annular groove adjacent its upper free end for supportingly receiving and guiding strip stock material. Shoulder means is provided along the body of the stock lifter for engagement of a hold-down fastener means therewith in mounting the stock lifter in a supporting die. The annular nature of the groove of the stock lifter permits the stock lifter to be installed with a hold-down fastener located at any point around the periphery of the stock lifter, thus allowing the supporting die member to be formed of reduced width and therefore a savings of material and attendant costs.

Abstract: An apparatus (40) and method for increasing the fin density of a serpentine sheet (10) having a plurality of fins (14a, 14b, 14c), each fin having two sides (16, 18) coupled together at one end (20) with a space (22) between the sides. Blocks (30, 32) having receptacles (30a, 32a) for receiving the ends (20, 24) of one side (16) of a fin (14a) and being near opposite surfaces (A, B) of the sheet (10) are moved vertically into contact with such ends. Simultaneously, blades (34, 36), being near the opposite surfaces (A, B) of the sheet (10) are moved vertically into position at the other side (18) of the fin (14a). Then, the blades (34, 36) are moved horizontally towards the blocks (30, 32), which are now held stationary, to compress the fin (14a) a predetermined amount by moving the other fin side towards the one fin side. The blocks and blades are then withdrawn from the sheet to move another fin (14b) into position for another compressing operation.

Abstract: A workpiece manipulator has a first epicyclic-gear transmission having a ary input and a crank output which moves generally in a planar and rectangular path on rotation of the rotary input through a predetermined angular distance. This path has generally parallel upright sides and generally parallel top and bottom sides interconnecting the upright sides. A drive including another epicyclic-gear train is connected to this rotary input and rotates same at a speed increasing generally from a standstill to a predetermined speed then slowing generally to a standstill again twice for each travel of the output about the rectangular path. These standstills correspond respectively to intermediate positions of the crank output along the upright sides of the path.

Abstract: A progressive stage forging machine is provided for forming an article in stages by means of a plurality of dies and cooperating punches, carried on a ram, wherein more than two forging blows are required to complete the forming of the article. The invention particularly provides a forging machine of the three-blow type having three punches and three cooperating dies, wherein two of the dies are carried on a member to permit alternating changes of position of those two dies, thereby eliminating a transfer mechanism between the two dies and achieving a one hundred percent increase over the production rate of presently available forging machines of the three-blow type.

Abstract: An inverted press for producing multiple drawn metal containers combines in one press the functions of cupping and drawing presses. The press includes a blanking and cupping station and several drawing and redrawing stations, disposed one adjacent the other and rendered serially operative by a vertically reciprocable slide assembly. At each stage of operation the material, semifinished article or finished article is under complete control. A method for producing a drawn container by multiple forming and reforming of a drawn article, is also provided.

Abstract: The transfer press has a blank-supply mechanism for supplying blanks which are materials for every kind of part to be manufactured by pressing, one by one to a press, a blank-transport mechanism for carrying blanks from the blank-supply mechanism to the press, a transfer feed mechanism for feeding blanks that have been supplied to the press one by one to dies of each stage along the bed of the press, a die exchange mechanism for exchanging dies when different parts are to be manufactured, a feed bar exchange mechanism for removing and exchanging feed bars which are a part of the transfer feed mechanism, when dies are to be changed, a die cooling oil circuit connecting mechanism for connecting a cooling circuit to a newly placed die in order to cool it, a pressure adjusting mechanism for die cushioning mounted on the bed of the press, and a program control mechanism for the automatic operation of the press, which controls the above-described mechanisms as well as the press in relation to blank supplying and ma

Abstract: Apparatus for the forming of long workpieces, such as bolts, spindles, shafts, etc., in a press with shaping tools mainly consisting of a plunger and a die. An ejection channel for the workpiece passes through the plunger and is situated around the axis of the latter. The apparatus includes at least two opposed clamp jaws mounted for controlled movement toward and away from each other, and situated in the plunger but outside the ejection channel, the jaws gripping the workpiece before the processing of the latter and conveying it in a centered position to the processing point, the jaws at that time entering the said ejection channel. After the workpiece has been processed by the plunger and die, the plunger with the workpiece held by the jaws thereon return to their initial positions. The apparatus of the invention can be used to advantage in presses with conversion tools having multiple stages each with a plunger and die wherein the workpiece is transferred from one stage to the other.

Abstract: A transfer device for transferring workpieces progressively from station to station in a press by means of mechanical linkages actuated by the press ram. The linkages have a brake mechanism strategically located and uniquely operative to prevent destructive vibrations that otherwise occur particularly during high speed operation of the press. The device has the further optional capability of lifting and carrying all or selected workpieces during the transfer operation.

Abstract: An apparatus for driving a pair of gripper bars of a multi-stage press in a longitudinal direction of the press which includes a pair of driven levers disposed symmetrically to a longitudinal center plane of the press, which levers are engageable with a slide guide extending at right angles to the longitudinal direction of the press. At least one feed cross member is operatively connected to the pair of gripper bars and also to the slide guide associated with the pair of driven levers. Two toothings are provided which are disposed symmetrically to the longitudinal center plane and are conjointly reciprocatingly driven between two end positions. Each toothing meshes with a pinion mounted for rotation and fastened to the frame with the pinions having a rotational path between the two end positions of the toothing which amounts to 180.degree.. Each pinion is also rotationally fixed to one of the pair of driven levers.

Abstract: Apparatus for feeding workpieces in a multi-station cross-fed press includes two movable carrier elements on which linear guides for pairs of jaws are provided. Rotatable camshafts within carrier elements actuate the jaws via levers.

Abstract: A high speed press for coining workpieces includes a head actuable by high pressure fluid. The high speed press also includes an advancing assembly for advancing individual workpieces to a position adjacent the head to be coined. The advancing assembly includes a reciprocating apparatus for advancing the individual workpieces to a position to be coined by the head. The advancing assembly is in fluid communication with the pressurized fluid employed to operate the head such that the operation of the advancing mechanism is synchronized with the operation of the head.

Abstract: A transfer press having a plurality of generally linearly spaced die stations, a transfer mechanism for successively advancing blanks or partially stamped parts from one station to the next each cycle of the press and quick change upper and lower die plates mounted in fixtures attached to the press slide and bed or bolster, respectively. Each of the die sets includes a plurality of die fixtures having extendible and retractable clamps which open to permit a die plate to be slid therein and approximately located by means of locating ears on the die plate which contact the forward surface of the respective fixture or by contacting locating blocks at the rear of the fixture. When the clamps are retracted, the die plates are pulled downwardly and are accurately located by means of a plurality of locating pins which engage corresponding apertures in the plates. The clamps lock the plates in their final operative positions for the successive stamping operations.

Abstract: A die change mechanism in a transfer press is disclosed for carrying feed bars with dies supported thereon into and out of the press. The mechanism performs cyclic clamping, advancement, unclamping and return movements on the feed bars which feed work pieces to and through the successive processing stages of the press.

Abstract: An improved pneumatic feeder for a punch press or the like wherein the operation of the feeder is adapted to be slaved in a semi-automatic manner to the operation of the punch press. The feeder is provided with a stock advancing feed slide and a control valve therefor whereby the stock advancing slide is normally positioned in a rearward or indexed position, and is adapted, when the feeder is triggered in response to the operation of the press, to execute a feed stroke and immediately thereafter automatically execute a non-feed stroke so as to return to said normal indexed position where it will remain until said feeder is again triggered in response to the next operation of said press.

Abstract: An apparatus for the straightening (dressing or peening) of relatively large circular-sawblade blanks, especially for hot-sawing circular saw blanks, comprises a stand for a forging hammer which is provided with a pneumatic peening hammer directed upon a working point and a support which is linearly shiftable relative to the hammer. The hammer is vertically reciprocatable and the translation direction of the support is horizontal and perpendicular to the axis of the hammer. The support comprises linearly-shiftable carriage provided with a table which can be rotated about a vertical axis through at least 180.degree. and the peening portion of the hammer is also rotatable about a vertical axis through at least 90.degree..

Abstract: A bending machine for bending longitudinally elongated channel-shaped sheet metal members according to the present invention consists of a frame and a die set including a female die assembly and a male die assembly and drive means for driving the die set to and fro between an open and closed position. The female die assembly consists of two members, one of which is held stationary relative to the frame and the other of which is movable relative to the first for movement towards and away from the male die element. The first member of the female die assembly serves to clamp the channel-shaped member with respect to the male die element and the second member of the female die assembly serves to form corrugations in the elongated channel-shaped members.

Abstract: Feeding apparatus for feeding material for a predetermined distance past a predetermined point on a feed-path comprises a pair of feed rollers, one of which is coupled to a stepping motor. A sensing means in the form of a light beam is provided on the feeding path at the predetermined point and when the material being fed intersects and interrupts this light beam, a control means for the stepping motor commences to count pulses transmitted to the motor. After a number of pulses have been counted which causes the motor to feed the material precisely to the predetermined location, the motor is stopped. The control means also has means for actuating a further apparatus (such as a crimping press) which performs an operation on the material. This control means is effective to delay energization of the crimping press is the press is not in a state of readiness for performing the crimping operation.

Abstract: In punching, cutting and forming presses and the like, electronic detecting means and/or sensors are provided so as to trip the press and prevent an operation when a mal-function occurs such as a tear in the strip material or a mis-alignment or a mis-feeding of the strip. When the press is equipped with an elbow arrangement to permit adjustments for feed line height while maintaining feed cycle synchronization, then the arrangement must incorporate the automated locking device of the invention, the same automatically unlocking the swing plate simultaneously with the tripping of the press.

Abstract: A transfer mechanism for use in forging machines including a bolster comprising a pair of substantially parallel transfer bars, each supporting gripper means adapted to grip blanks to be transferred, said transfer bars being supported for operation through a cycle including movements in three dimensions, each dimension of movement being substantially perpendicular to the other two directions of movements. Three separate drives are interconnected so as to move the transfer bars and all can be actuated by a single power source and are arranged to operate without adversely affecting the operation of the other drives. The transfer mechanism, further includes a pair of U-shaped casings mounted at both ends of said transfer bars so as to provide enough space to accommodate said transfer bars as well as loading and unloading devices therein.

Abstract: An article transfer mechanism is provided comprising parallel spaced apart feed plates reciprocable in the direction between the opposite ends thereof and carrying a plurality of laterally opposed article engaging feed finger members. Each feed finger member is supported for reciprocation laterally relative to the corresponding feed plate, and the feed plates support corresponding cam rods displaceable therewith and relative thereto in the direction of reciprocation of the feed plates. A cam and lever arrangement reciprocates the feed plates to displace the feed finger members longitudinally, and a second cam and lever arrangement reciprocates the cam rods to displace the feed finger members laterally inwardly and outwardly relative to the feed plates.

Abstract: A control system for controlling operating steps of a press and/or transfer mechanism therefor in dependence upon the position of a drive shaft of a drive mechanism of the press. The system includes a coded pulse generator supplying coded pulses indicative of the position of the drive shaft to a decoder from which decoded pulses are supplied to a control pulse distributor to an amplifying unit and appropriate regulating member for regulation of the operating step. A monitoring unit is also provided for monitoring the operation of the control system.

Abstract: A press brake plate lifter has horizontally extending lift rails pivotally mounted to a supporting framework, for supporting and lifting sheet stock during press brake operations. The lift rail pivot axis is coextensive with the bending axis of the press brake die. The material support lift rails are horizontally adjustable to accommodate sheet stock of varying dimensions, while plate clamps mounted on the lift rails hold the sheet stock firmly during the bending operation.

Abstract: The feeding mechanism serves to intermittently feed stock to a processing machine and comprises a rocker lever having at its outer end an arcuate surface shaped according to an arc of a circle, crank drive comprising a crank which is operatively connected to said rocker lever, said crank drive being operable to impart an oscillation to said rocker lever, a clamping roller adapted to cooperate with said arcuate surface and forming a feeding clamp therewith, a retaining clamp for holding said stock in position, and control means for cyclically opening and closing said feeding clamp and retaining clamp in alternation.

Abstract: A high speed end forming apparatus for elongated work pieces, such as coated tube, includes two selectively variably spaced C-shape heads having feed openings therein to receive the two ends of the advancing work piece, the two ends sequentially being clamped and formed in such position, respectively, by relatively movable chuck jaws and forming apparatus carried by such C-shape heads. The work piece is advanced to the C-shape heads by a walking beam transfer conveyor that is simultaneously operative to deliver an unformed work piece to the C-shape heads and to remove a formed work piece from the C-shape heads.

Abstract: A multi-track machine press is disclosed having a base, a vertically movable ram mounted to the base, and a plurality of horizontally movable slides under the ram. A plurality of master die sets each comprising a plurality of step-height dies arrayed parallel to the motion of the slide have a lower half mounted to the slide and an upper half mounted to the corresponding portion of the ram directly over the particular slide. The slides move horizontally in unison. The upper and lower portion of each master die set come together during a work stroke for a stamping operation when the slides are at a first zero velocity position, and are indexed one die lead for a transfer operation during a deposit stroke when the slides are at a second zero velocity position. The multi-track machine press is thus capable of performing a series of separate die stamping operations while minimizing the amount of scrap from the coil strip stock fed into the press for producing parts.