Plural Deep Drawing Patents (Class 72/349)
  • Patent number: 5138862
    Abstract: An apparatus for forming containers is disclosed having an improved guidance system for guiding a ram along a substantially linear path through a tool pack. The apparatus includes at least one bearing assembly through which the ram reciprocates. Preferably, the ram has a substantially circular cross-section.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: August 18, 1992
    Assignee: Ball Corporation
    Inventors: Howard C. Chasteen, Walter E. Akes
  • Patent number: 5129252
    Abstract: A can body maker apparatus of the type having an axially reciprocal ram member and an axially reciprocal redraw carriage comprising a ram position sensing assembly for sensing the position of the ram member and for generating a ram position signal in response thereto; an electromagnetic bearing assembly for frictionlessly radially supporting and aligning one end of the ram member with a predetermined ram displacement path; an electromagnetic redraw carriage actuator for applying magnetic force to the redraw carriage for reciprocating the redraw carriage; and a control assembly for selectively energizing and deenergizing electromagnets in the electromagnetic bearing assembly and the electromagnetic redraw assembly in response to the ram position signal.
    Type: Grant
    Filed: July 2, 1991
    Date of Patent: July 14, 1992
    Assignee: Coors Brewing Company
    Inventors: Roger A. Hahn, Phillip W. Gold, Harold Cook, Jr.
  • Patent number: 5119657
    Abstract: Draw processing flat-rolled sheet metal substrate preselectively precoated on each surface with organic coating and draw lubricant into one-piece can bodies ready for assembly into sanitary packs free of any requirement for washing, organic coating or repair of organic coating after fabrication and before such direct usage. Selective organic precoating includes embodying a blooming compound which is made available as draw lubricant responsive to heat and/or pressure of draw forming; also, surface application of a draw lubricant after curing of the organic coating. Combined lubricant on each surface is verified before start of fabricating. Draw-forming of tensile strength sheet metal is controlled over side wall height by clamping solely between planar clamping surfaces and by interruption of draw to establish a flange at the open end of cup-shaped work product.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: June 9, 1992
    Assignee: Weirton Steel Corporation
    Inventor: William T. Saunders
  • Patent number: 5088870
    Abstract: A method for forming a two chambered can having a first chamber in a seamless hollow can cylinder with a closed end portion formed by deep drawing a thin aluminium sheet a second chamber defined in a recess which is formed by inversely rolling a part of the can cylinder at the location adjacent to the end wall of the can cylinder to displace the end wall toward the interior of the can cylinder. respective chambers are filled with different contents and are sealingly closed by respective can lids by a double winding up process respectively.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: February 18, 1992
    Assignee: Daiwa Can Company
    Inventors: Akio Fukuhara, Kazuo Iyama, Kazuo Suzuki, Ken Iwase
  • Patent number: 5083449
    Abstract: Disclosed is a redrawing method in which a preliminarily drawn cup having a flange is engaged with a flange-correcting die arranged coaxially with a blank holder to surround the blank holder with a small distance from the peripheral face of the blank holder before the residual flange of the preliminarily drawn cup is introduced into a clearance between the blank holder and a redrawing die, and the preliminarily drawn cup is redrawn in this state. The flange-correcting die has a working face, the inner diameter of which is gradually decreased, and the distance of from the peripheral face of the cup on the tangential line of the working face to the point of the contact with the working face is substantially constant at least in the introduction side portion of the working face.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: January 28, 1992
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Tomomi Kobayashi, Katsuhiro Imazu
  • Patent number: 5067341
    Abstract: A method and apparatus are disclosed for making and transferring shells for cans within a ram press. The shells are formed in a two-step operation in which shell preforms are formed at a first station within the press and then transferred to second station where they are formed into completed shells. The first station includes first and second rows of tooling sets with the tooling sets of the first row being located in alternating transverse positions relative to the tooling sets of the second row. Similarly, the second station includes third and fourth rows of tooling sets in which the tooling set of the third row are located in alternating transverse positions relative to the tooling sets of the fourth row, and the tooling sets of the third and fourth rows are located for receiving the shell preforms from the tooling sets of the second and first rows, respectively.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: November 26, 1991
    Assignee: Dayton Reliable Tool & Mfg. Co.
    Inventors: David K. Wynn, Omar L. Brown
  • Patent number: 5061140
    Abstract: A method of manufacturing a metal container by attaching a body formed integral with a top cover to a bottom plate formed separately. The body and bottom plate are sealably attached together with an adhesive and by a tight curl. The tight curl is formed toward the interior of the container and not exposed outside, thus making it pleasing to the eye.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: October 29, 1991
    Assignees: Shiseido Company Limited, Asia Can Company Limited
    Inventors: Masami Hamaguchi, Hiromu Yanagihara, Osamu Hiraoka, Osamu Takahashi
  • Patent number: 5040682
    Abstract: A system for reconfigurating generally cylindrical, open-top containers that are formed from deformable metal utilizes a press to force bottom portions of upwardly opening, substantially cylindrical containers into a die to carry out drawing operations that alter bottom and side wall portions of the containers to elongate the containers and to provide the containers with tapered, fluted side portions that enable the reconfigured containers to be nested for empty shipment and storage in a minimum of space. As a part of the container reconfiguration process, each container is provided with a plurality of vertically extending "flutes" that extend along the side walls of the reconfigured containers, and with at least one ring-like formation that serves to enhance container strength, container stability and/or container handling characteristics.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: August 20, 1991
    Assignee: Berwick Container Corp.
    Inventors: Stephen P. Palisin, Jr., Raymond J. Keller
  • Patent number: 5016462
    Abstract: Can ironing die members for use in a tool pack assembly which is part of a can body making apparatus used in forming cups into can bodies and wherein each can ironing die member is mounted in a fixedly mounted holding member so that the can ironing die member can be moved in radial directions by the cup from an initial location to a new location if the longitudinal axes of the cup and the can ironing die member are not in alignment and retaining apparatus for retaining the can ironing die member at the new location until moved again by an out of alignment cup. Also, the can ironing die member can be rotated relative to the holding member.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: May 21, 1991
    Assignee: Adolph Coors Company
    Inventors: Conrad M. Grims, Bruce A. Moen, Jaroslav F. Pardubicky
  • Patent number: 5014536
    Abstract: New technology for deep drawing can bodies for use in the manufacture of two-piece cans for food and beverage products from precoated flat-rolled sheet metal can stock in which damage to can stock precoated on both surfaces with an organic coating is avoided and draw-forming of the side wall is controlled to decrease metal requirements. A draw die cavity entrance (47, 74) is selected to provide at least a major portion of its curvilinear surface having a radius of curvature of about five times nominal sheet metal thickness gage, or less, e.g. a maximum radius of curvature of 0.04 inch is used for the more commonly used can stock materials.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: May 14, 1991
    Assignee: Weirton Steel Corporation
    Inventor: William T. Saunders
  • Patent number: 4996865
    Abstract: A horizontally movable ram and crank drive mechanism therefor for reciprocating the working end of the ram in straight line motion through a die pack for ironing and drawing metallic can bodies is disclosed. The ram is supported by a hydrostatic type bearing support assembly to counteract gravitational vertical deflection of the unsupported working end of the ram. A cardan type crank drive mechanism for converting rotational input force into straight line reciprocating movement of an output shaft is also disclosed.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: March 5, 1991
    Assignee: Reynolds Metals Company
    Inventors: Donald R. Haulsee, Herman J. Steinbuchel, Sandra K. Wallace-Daye, Brian L. Matthews
  • Patent number: 4987762
    Abstract: An individually variable multi-stage drawing apparatus has a succession of drawing stations in a multi-level configuration, each station other than the first being vertically offset from and at a level lower than that of a preceding station. Each station includes a circular die through which a workpiece is forced by a cylindrical plunger. Each plunger is operated by its own individual hydraulic ram. In this way, plunger movement commences at a pressure and continues at a rate governed by the metallic flow requirements of the workpiece at each successive drawing stage.The invention further comprises transfer devices for shifting the workpieces from one drawing stage to the next. These transfer devices grip, carry and release the workpieces without subjecting them to potentially damaging frictional contact.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: January 29, 1991
    Assignee: Sterns Metals Inc.
    Inventor: Richard Cash, Sr.
  • Patent number: 4962659
    Abstract: The present invention provides a redrawing method which comprises holding a preliminarily drawn cup of a covered metal sheet by an annular holding member inserted in the cup and a redrawing die, and relatively moving the redrawing die and a redrawing punch arranged coaxially with the holding member and redrawing cup, the drawing punch being capable of going into the holding member and coming out from the holding member, so that the redrawing die and redrawing punch are engaged with each other, to form a deep-drawn cup having a diameter smaller than that of the preliminarily drawn cup. This redrawing method is prominently characterized in that the radius of curvature of the operating corner portion of the redrawing die is 1 to 2.9 times as large as the bare sheet thickness of the metal sheet.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: October 16, 1990
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Katsuhiro Imazu, Tomomi Kobayashi, Masao Ishinabe, Hisao Iwamoto
  • Patent number: 4956990
    Abstract: Apparatus for forming can blanks into elongated can bodies comprising a support structure having first and second gears rotatably mounted on the support structure and drive means for rotating the first and second gears so that the second gear rotates in a direction opposite to the direction of rotation of the first gear. A redraw assembly and can forming and ironing dies located adjacent to the support structure. A ram mounted on the support structure for reciprocating linear movement with portions thereof passing through the redraw assembly and the can forming and ironing dies. Connecting the ram to the first and second gears so that rotation of the first and second gears reciprocates the ram. In one embodiment, the ram does not rotate during the reciprocation thereof but in another embodiment the ram rotates during the reciprocation thereof.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: September 18, 1990
    Assignee: Adolph Coors Company
    Inventor: Warren R. Williams
  • Patent number: 4926669
    Abstract: Can ironing die members for use in a tool pack assembly which is part of a can body making apparatus used in forming cups into can bodies and wherein each can ironing die member is mounted in a fixedly mounted holding member so that the can ironing die member can be moved in radial directions by the cup from an initial location to a new location if the longitudinal axes of the cup and the can ironing die member are not in alignment and retaining apparatus for retaining the can ironing die member at the new location until moved again by an out of alignment cup. Also, the can ironing die member can be rotated relative to the holding member.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: May 22, 1990
    Assignee: Adolph Coors Company
    Inventors: Conrad M. Grims, Bruce A. Moen, Jaroslav F. Pardubicky
  • Patent number: 4914937
    Abstract: A method of forming a tapered container in which the container is first redrawn to a partial length having first and second straight sidewall portions interconnected by a transition portion and then redrawn to substantially its final length and tapered condition by drawing material from the transition portion. The method also optionally includes an overlength second redraw and a bottom profiling step utilizing the overdrawn portion to form the profile.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: April 10, 1990
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., James A. McClung
  • Patent number: 4909393
    Abstract: A system for reconfiguring generally cylindrical, open-top containers that are formed from deformable metal utilizes a press to force bottom portions of a container into a die to carry out a drawing operation that alters bottom and side wall portions of the containers to elongate the containers and to provide the containers with tapered, fluted side portions that enable the reconfigured containers to be nested for empty shipment and storage in a minimum of space. As containers are reconfigured, the decrease that results in fluid-carrying capacity as side wall portions are fluted and folded inwardly is compensated for, at least in large part, by elongating the containers as by folding peripheral portions of their bottom walls upwardly to serve as extensions of their side walls.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: March 20, 1990
    Assignee: Berwick Container Corp.
    Inventor: Stephen P. Palisin, Jr.
  • Patent number: 4896594
    Abstract: A drawing installation for a press which has to produce the holding force for the counter-holding during the drawing. The drawing ram displaces the sheet metal part and the sheet metal holder against the holding force to be produced by the drawing installation and must additionally overcome the inertia forces which occur as a result of the acceleration of the parts of the drawing installation at the beginning of the deformation of the sheet metal part. In order to avoid the forces which occur thereby impact-like, the piston rod transmitting the holding force is pre-accelerated in the drawing direction prior to the contact of the drawing ram on the sheet metal holder. The piston rod has an operating surface adapted to be acted upon in the drawing direction. The pressure space coordinated to the operating surface is adapted to be connected with a pressure quantity space of a pre-acceleration cylinder and with a reservoir by way of a follow-up control.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: January 30, 1990
    Assignee: L. Schuler GmbH
    Inventors: Siegfried Baur, Rudi Brandstetter, Gerhard Roos
  • Patent number: 4863333
    Abstract: A press for forming cans from a metallic sheet includes a first work station having a blanking and drawing punch for cutting a blank from the sheet and drawing a cup from the blank. A second work station includes a redrawing punch for redrawing the cup to a smaller diameter to form a can. The redrawing punch travels through an opening formed in the sheet when the blank is cut from the sheet and acts in concert with the blanking and drawing punch. When the redrawing operation is complete, the redrawing punch reciprocates out of the opening in the sheet, as does the blanking and drawing punch, so that the sheet can advance to the next station. Other subsequent work stations act in concert with the blanking and drawing punch and redrawing punch by passing through openings formed in the sheet when a blank is punched at the first work station.
    Type: Grant
    Filed: June 12, 1987
    Date of Patent: September 5, 1989
    Assignee: The Stolle Corporation
    Inventor: Elton G. Kaminski
  • Patent number: 4854030
    Abstract: Disclosed are a hose fitting comprising the following and a process for manufacturing the same: A hose fitting body composed of a head portion with a through hole made in the center of a pair of flat surfaces thereof, a base portion, and a sleeve all of which are formed out of a test tube-shaped substance by a plastic deformation, and a nipple integrally fixed on the inner circumferential surface of the sleeve. The hose fitting of this invention provides the following advantages of offering easy work for the bending the base portion, offering readiness for securing a necessary cross-sectional area as the fluid delivery hole of the base portion even when the base portion is bent greatly, light-weighted construction having a uniform wall thickness and requiring less raw material cost, and fixing nipple on the sleeve inner circumferential surface in a fluid-tight manner without brazing or drive fitting the nipple.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: August 8, 1989
    Assignee: Toyoda Gosei Co., Ltd.
    Inventors: Masayuki Nishikawa, Takeshi Miyazaki, Terumitsu Shigeki, Satoshi Mizutani, Toru Isono
  • Patent number: 4852377
    Abstract: A tool pack includes a cradle (30) that defines a space (36) into which ironing die assemblies (80, 100, 106) and a plurality of lubricating rings (78, 102, 104) each associated with an ironing ring are mounted. A lubricant manifold (152) is configured so that the lubricating rings can be manipulated into position to provide communication between the rings and the manifold. The cradle has a pair of spaced locator bars (52) exposed in the space and a cover (40) is pivotally mounted on the cradle to close an access opening and is locked by a clamp mechanism (44). The cover has deflectable metal members (62) that engage the ironing assemblies and lubricating rings and apply pressure to force the assemblies into engagement with the locator bars and also provide sealing engagement between the manifold and the lubricating rings.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: August 1, 1989
    Assignee: American National Can Company
    Inventors: Raymond Mikas, Robert M. Szczerba, Sam C. Pulciani
  • Patent number: 4843863
    Abstract: Can ironing die members for use in a tool pack assembly which is part of a can body making apparatus used in forming cups into can bodies and wherein each can ironing die member is mounted in a fixedly mounted holding means so that the can ironing die member can be moved by the cup from an initial location to a new location if the longitudinal axes of the cup and the can ironing die member are not in alignment and retaining apparatus for retaining the can ironing die member at the new location until moved again by an out of alignment cup.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: July 4, 1989
    Assignee: Adolph Coors Company
    Inventors: Conrad M. Grims, Bruce A. Moen
  • Patent number: 4782685
    Abstract: A method of forming a tapered container in which the container is first redrawn to a partial length having first and second straight sidewall portions interconnected by a transition position and then redrawn to substantially its final length and tapered condition by drawing material from the transition portion. The method also optionally includes an overlength second redraw and a bottom profiling step utilizing the overdrawn portion to form the profile. The apparatus includes a plurality of stations wherein the redrawing is accomplished in the first instance with a tapered punch and straight walled die and in the second instance with a tapered punch and tapered die.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: November 8, 1988
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., James A. McClung
  • Patent number: 4779443
    Abstract: A complex pressing die apparatus having a plurality of upper and lower dies which are actuated by respective hydraulic cylinder devices which are located in a coaxial arrangement, respectively, in accordance with a predetermined sequence.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: October 25, 1988
    Assignee: Toyoshima Kabushiki Kaisha
    Inventor: Hideo Hoshi
  • Patent number: 4722215
    Abstract: The invention herein relates to a method of forming a one-piece can body having a reinforced pressure-resistant can end and/or stacking bead by first forming a generally cup-shaped blank defined by a generally cylindrical body, a radius portion and an end, exerting first forces against the cup-shaped blank in a first direction to form the end into a concavely outwardly opening end defined by a central end panel, a frusto-conical wall and an annular inwardly opening channel merging with the cylindrical body, and exerting second forces against the annular channel in a second direction opposite the first direction while gripping the central end panel to reform either or both the frusto-conical wall and a part of the annular channel to selectively form one or both of an inwardly projecting outwardly opening annular bead and an outwardly projecting inwardly opening annular bead defining respective reinforcing and stacking beads, and the first and second directions defining a single reciprocal opposing path of forc
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: February 2, 1988
    Assignee: Metal Box, plc
    Inventors: William L. Taube, David A. Roberts
  • Patent number: 4716755
    Abstract: A method of forming a container end piece includes blanking a work piece from a sheet of material and forming an inverted cup therefrom by wiping the peripheral edge of the blank over a die core ring. The inverted cup is then reversed by advancing a punch core and a punch core ring simultaneously to form a cup having a flange area, a central body area and a chuckwall area interconnecting the flange and the bottom. The punch core ring is then advanced ahead of the punch core to shorten the chuckwall area and reduce the radius between the chuckwall and the central bottom portion. The method also includes engaging the flange area of the reversed cup by a pressure sleeve which moves downwardly with the punch core ring during the final forming of the chuckwall.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: January 5, 1988
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., James A. McClung
  • Patent number: 4711611
    Abstract: Methods and apparatus are disclosed for fabricating from ductile sheet metal a can body with integral side and bottom walls. A rounded non-circular blank is formed from the sheet metal, the blank having a greater width across the grain of the metal than along such grain. The blank is formed into a cup-shaped receptacle having a bottom and an upstanding wall of not less than the desired internal size of the can body. The wall has a length substantially less than the desired depth of the can body and is substantially thicker than the thickness desired in the finished can body. The wall is then thinned to the desired thickness so as to lengthen the wall to at least the desired depth of the can body.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: December 8, 1987
    Assignee: Dayton Reliable Tool & Mfg. Co.
    Inventors: Henry C. Bachmann, Ermal C. Fraze
  • Patent number: 4696177
    Abstract: A method of forming a container in one or more double acting presses includes the steps of blanking, drawing an inverted cup and reverse drawing the inverted cup while retaining a flange thereon at a first station and then transferring the cup to a second station where the cup is drawn to an inverted configuration and then reverse drawn to form a finished container again retaining the flange throughout. The drawing operations at each station are performed in a single stroke of the press. The apparatus at the first station includes a blank and draw punch and a fixed, hollow die core ring with the punch telescoping over the ring to form the inverted cup and a draw horn telescoping within the ring to reverse draw the cup. The apparatus at the second station includes a hollow redraw sleeve and a pressure sleeve telescoping over the redraw sleeve to invert the cup and a profile punch telescoping within the redraw sleeve to reverse draw the cup.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: September 29, 1987
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., James A. McClung
  • Patent number: 4685322
    Abstract: A method of forming a drawn and redrawn container body which includes forming an inwardly projecting annular bead in the end wall of a drawn cup to be redrawn in order to prevent wrinkling in the end wall when it is subsequently formed into a pressure-resistant profile.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: August 11, 1987
    Assignee: Aluminum Company of America
    Inventor: Ernest J. Clowes
  • Patent number: 4620434
    Abstract: Apparatus for reforming an end wall of a container shell including a punch reciprocable along a path on a frame and a domer assembly at the end of the path. The domer assembly includes a domer pad and an annular forming element with biasing means between the pad, the annular forming element and the base. The biasing means for the annular forming element includes an annular chamber divided into spaced segments that each have a piston reciprocated therein and a pressurized fluid source connected thereto, while the domer pad is supported on a post that extends through a tubular column forming part of the base and has an enlarged pad at the opposite end which also is in communication with the pressurized fluid source to produce an end wall configuration that has a large outer annular arcuate portion merging with an annular flat support portion that has an upwardly-extending flat annular portion surrounding a central upward dome.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: November 4, 1986
    Assignee: National Can Corporation
    Inventors: Sam C. Pulciano, Raymond Mikas, Robert M. Wyleta
  • Patent number: 4614104
    Abstract: A support for a reciprocating ram wherein a plurality of rollers having angularly related generally cylindrical support surfaces are mounted in a fixed location and the ram is provided with planar surfaces having the same corresponding angular relationship wherein the weight of the ram is utilized to maintain the planar surfaces in contact with the generally cylindrical support surfaces during reciprocal movement of the ram with dampening means being provided to minimize vibrations. An additional force is applied to the ram to ensure a rolling relationship between the planar and generally cylindrical surfaces at all times during the reciprocal movement.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: September 30, 1986
    Assignee: Ball Corporation
    Inventor: David A. Straw
  • Patent number: 4606215
    Abstract: Stripping a workpiece from a punch using a plurality of pivotally mounted segments that in an open position have a diameter greater than the outside diameters of the workpiece and the punch but in a closed position have a diameter greater than the outside diameter of the punch but less than the outside diameter of the workpiece.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: August 19, 1986
    Assignee: PAC International, Inc.
    Inventor: Danny L. McMillin
  • Patent number: 4603571
    Abstract: An apparatus and method are disclosed for drawing a metal cup from a metal sheet. Initially, a non-circular blank is provided from the metal sheet by a blanking device. Subsequently, a first drawing device draws a non-circular cup from the non-circular blank such that more stretching takes place where the blank perimeter is closer to the geometrical center of the blank than the stretching which takes place where the blank perimeter is further from the geometrical center of the blank. Finally, a second drawing device draws a circular cup from the non-circular cup. Preferably, the provided blank is hexagonal or rectangular shaped and the associated non-circular cup is then similarly shaped. The second draw device is also preferably a reverse draw device.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: August 5, 1986
    Inventor: Ewald J. H. Wessels
  • Patent number: 4599886
    Abstract: A method of manufacturing a high pressure gas cylinder by deep drawing and ironing a blank of high strength steel, the periphery of the blank being ground prior to cupping.
    Type: Grant
    Filed: October 10, 1984
    Date of Patent: July 15, 1986
    Assignee: Sodastream Limited
    Inventor: Eric D. Brown
  • Patent number: 4589270
    Abstract: An improved bottom former for a draw and iron can-making apparatus is disclosed. The improved bottom former includes a hydraulically pressurized base-forming die unit. This die unit provides increased pressure and improved results, as compared with conventional bottom formers, especially with regard to large diameter can bodies.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: May 20, 1986
    Assignee: Reynolds Metals Company
    Inventors: Harry W. Lee, Jr., Joseph W. Wallace
  • Patent number: 4587827
    Abstract: A method of drawing metal cups from metal sheets, which includes the steps of separating non-circular blanks of material from a metal sheet and of drawing cups from such blanks. The blanks may be of substantially hexagonal or square shape.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: May 13, 1986
    Inventor: Ewald J. H. Wessels
  • Patent number: 4584859
    Abstract: Continuous in-line control of work product is provided in draw-redraw processing of flat-rolled sheet metal, coil coated on both its surfaces with organic coating, to finished one-piece can bodies. Drawing of a sheet metal blank is controlled to present flange metal at the open end of the cup-shaped work product which is disposed with its closed end wall in the sheet metal line. The drawn work product is pneumatically controlled to separate the sheet metal line from the can line eliminating random accumulation of work product. Redrawing operations are carried out closed end up to present flange metal which stabilizes in-line movement of work product. Electrostatic lubrication to protect organic coating and facilitate forming is carried out prior to each redrawing operation; in-line movement of work product is controlled during such lubrication.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: April 29, 1986
    Assignee: Weirton Steel Corporation
    Inventor: William T. Saunders
  • Patent number: 4581915
    Abstract: A hydraulic cup holder for use in a draw and iron can making press is disclosed. This cup holder produces increased pressure between the cup being reformed and its holding members, reducing the tendency for wrinkles to occur in reforming the cup into a can body.
    Type: Grant
    Filed: July 27, 1984
    Date of Patent: April 15, 1986
    Assignee: Reynolds Metals Company
    Inventors: Donald R. Haulsee, Melvin Vergales
  • Patent number: 4578981
    Abstract: An apparatus for supporting an elongated ram which is adapted to reciprocate horizontally at a high velocity is provided. The apparatus comprises a slide yoke fixed onto the base of the ram for driving the ram, the slide yoke comprising at least two sets of hydrostatic pressure sliding oil pockets in the longitudinal direction thereof; and a hydrostatic pressure bearing for supporting the ram, the hydrostatic pressure bearing having at least three sets of oil pockets in the longitudinal direction thereof which are spaced with bushings therebetween.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: April 1, 1986
    Assignee: Toyo Seikan Kaisha Limited
    Inventors: Hirotaka Nishikawa, Yoshibumi Arai
  • Patent number: 4571978
    Abstract: The invention herein relates to a method of and apparatus forming a reinforced pressure resistant can end by gripping a central panel of a metallic blank between an axially aligned reform pad and an indent ring, the reform pad being in internal concentric relationship to a draw punch and the indent ring being in internal concentric relationship to a lift ring, the draw punch being movable in a first direction to exert first forces against a peripheral edge portion of the blank in a first direction to form the peripheral edge portion out of the plane of the central panel and shape the blank into a generally flanged cup-shaped configuration defined by the central panel, a radius, a frusto-conical wall and an annular flange, and while the central panel is still gripped, second forces are exerted beyond the first forces and in a second direction opposite the first direction to form at least a part of the metal of the radius, in the absence of restraint or constraint, out of the plane of the central panel and to a
    Type: Grant
    Filed: February 14, 1984
    Date of Patent: February 25, 1986
    Assignee: Metal Box p.l.c.
    Inventors: William L. Taube, David A. Roberts
  • Patent number: 4570843
    Abstract: An anode cylinder of a magnetron is formed of a rectangular copper plate member. The plate member is curved in a rolling process to be formed into a cylindrical primary workpiece. In a first cold extrusion process, the primary workpiece is forced successively into a first die having an inner diameter shorter than the outer diameter of the primary workpiece and a second die having an inner diameter shorter than that of the first die and arranged in line with the first die. Thus, the primary workpiece is continuously reduced in its outer diameter to be formed into a secondary workpiece. The thickness reduction rate of the primary workpiece used during its passage through each of the first and second dies is limited to 3% or less. The secondary workpiece has its unnecessary portions removed in a cutting process and its seam filled up airtightly in an airtight bonding process.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: February 18, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hikaru Matsuzaki, Toshiyuki Matsuzaki
  • Patent number: 4565664
    Abstract: Herein disclosed is a process of manufacturing drawn tubing, in which steps of applying a lubricant to the surface of a bottomed blank fitted on a mandrel, pushing out the mandrel to draw the blank through a die, and pulling in the drawn blank together with the mandrel out of the die are repeated in the recited order. The drawn blank is turned a predetermined angle, e.g., 180 degrees on the axis thereof during each of the repeating steps i.e., during or after the pulling step. As a result, the lubricant can be applied to another portion of the blank surface at a second or subsequent applying step so that the working conditions which might otherwise become different to cause the drawn blank to have a locally irregular or offset thickness can be made uniform in the circumferential direction of the blank.
    Type: Grant
    Filed: March 17, 1983
    Date of Patent: January 21, 1986
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Shigeki Ikehata, Kuniharu Shutoh, Kazuya Aoyagi
  • Patent number: 4562719
    Abstract: A forming machine (10) is provided for forming a finished part (12) from a flat blank (14). Draw stations (18-24) are provided to initially form the intermediate part. Each draw station includes a punch (44, 62, 66, 70') and a draw die (48, 64, 68, 72). Each punch defines a shoulder along its length to create a first step (60) in the side walls (26) of the intermediate part. In a subsequent draw stage, a draw punch (70') forms a second shoulder along its length to create a second step (100) in the side walls (26) of the intermediate part. A draw shoulder (61) on the draw punch (71') mates with the step (60) to maintain the concentric shape thereof. In the subsequent necking and final form stages (30, 32, 34) the punch employed also has a shoulder to permit variation of the force applied to the intermediate part between the step and bottom portion.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: January 7, 1986
    Assignee: Verson Allsteel Press Company
    Inventors: John D. Budrean, John A. Kirkpatrick
  • Patent number: 4562718
    Abstract: A sheet metal workpiece is formed to have a plurality of relatively large diameter but relatively shallow cup-like depressions in a first draw operation, to have the shapes of the cup-like depressions changed in a subsequent draw operation and to form the base of the central cup-like depression into a secondary cup-like depression in a further draw operation.
    Type: Grant
    Filed: March 8, 1984
    Date of Patent: January 7, 1986
    Assignee: Precision Tool & Gauge Pty. Ltd.
    Inventor: Robert J. Dunk
  • Patent number: 4562720
    Abstract: An ironing apparatus for forming a cup-like metallic article such as an one-piece metallic can body is provided. The apparatus comprises a punch provided on a tip of a ram adapted to reciprocate in the horizontal direction and a plurality of ring dies cooperating with the punch. In the apparatus, the punch reciprocates such that the center of the end face thereof moves along a locus curved downwardly with the gravity, and the die is disposed to be slightly inclined with respect to a vertical plane such that the axis of the die extends substantially in the tangential direction of the locus at the location of the die.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: January 7, 1986
    Assignee: Toyo Seikan Kaisha, Limited
    Inventor: Hirotaka Nishikawa
  • Patent number: 4559802
    Abstract: A forming machine (10) is provided for forming a finished part (12) from a flat blank (14). Draw stations (18-24) are provided to initially form the intermediate part. Each draw station includes a punch (44, 62, 66, 70) and a draw die (48, 64, 68, 72). Each punch defines a shoulder along its length to create a step (60) in the side walls (26) of the intermediate part. In the subsequent necking and final form stages (30, 32, 34) the punch employed also has a shoulder to permit variation of the force applied to the intermediate part between the step and bottom portion.
    Type: Grant
    Filed: February 5, 1985
    Date of Patent: December 24, 1985
    Assignee: Verson Allsteel Press Company
    Inventors: John D. Budrean, John A. Kirkpatrick
  • Patent number: 4554814
    Abstract: An air transfer system for a shell press is provided which air conveys a blanked and formed shell from a blanking and forming die station in the shell press to a curling die station in the same shell press. The air transfer system further provides for the blanked and formed part to be air conveyed within the curling die, and after the shell is curled within the die, provides for the curled shell to be air ejected from the curling die for subsequent fluid conveyance therefrom. A guide track extending between the die stations is just slightly wider than the diameter of the shell being conveyed and the fluid conveyance is provided by a hollow tube disposed in the upwardly facing surface of the guide track. A shell is air conveyed within the curling die station when an opening in a sleeve member, which is disposed about the curling die station and connected to a reciprocating blanking slide, becomes aligned with the guide track upon downward motion of the blanking slide.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: November 26, 1985
    Assignee: The Minster Machine Company
    Inventors: Arthur L. Grow, Charles J. Gregorovich, Donald N. Seyfried
  • Patent number: 4554815
    Abstract: A tool pack assembly for the drawing and ironing of containers wherein the ironing and guiding dies are movably mounted for automatic centering thereof to regain axial realignment thereof with the axis of the provided punch should such disc shift from alignment. The assembly includes a redraw dye or ring to receive the blanked container and associated support and ram with the ironing dies being spaced therefrom for ironing of the container as the same is driven therepast by movement of the ram. Ironing dies are mounted for radial floatation within a housing, and biasing means are spaced peripherally thereabout to bring the ironing dies and guides into axial relationship with the ram. The assembly further includes a stripper die assembly for removal of the finally formed container which die is similarly radially floatable and similarly biased to bring the die into axial relationship with the container and container driving punch.
    Type: Grant
    Filed: September 21, 1983
    Date of Patent: November 26, 1985
    Assignee: Pride Machine, Inc.
    Inventor: Gale F. Weishalla
  • Patent number: 4553419
    Abstract: The present invention provides a novel process for forming a cell can or container, for a cylindrical battery having longitudinally extending internally projecting ribs which are formed along the internal surface of the battery cell. These ribs provide increased physical and electrical contact between the cell and the electrode material disposed therein. Also disclosed herein is the product formed by this process.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: November 19, 1985
    Assignee: Duracell Inc.
    Inventor: John T. Goodman
  • Patent number: 4546636
    Abstract: An apparatus and method for the high-speed production of seamless metal container bodies is disclosed utilizing a reciprocating ram which forces a relatively shallow metal cup through a die assembly to iron the sidewall of said cup to form an elongated ironed container body, the ram is supported and critically-aligned by at least two stationary guide means along its length and a slide blank means rigidly secured to its rearward end, the slide block means having opposed hydrostatic pressure pads to provide constant critical alignment of the rear end of the ram and prevent misalignment of the ram relative to the die assembly to avoid producing container bodies of overly-inconsistent length.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: October 15, 1985
    Assignee: National Can Corporation
    Inventors: Walter W. Snyder, Dennis G. Dettmer