With Means Providing For Plural Steps In Tool Stroke Patents (Class 83/554)
  • Publication number: 20120222529
    Abstract: The present invention relates to a method of stripping of wrapping material comprising, for example, ends and a casing on substantially cylindrical rolls of paper and the like, in which the end of the wrapping material is opened by engagement by means of a first tool from some position on the end surface for processing the end wrapping material by cutting, slicing, sawing and/or other processing of the end wrapping material in a direction out towards the periphery of the end where the end connects to the casing, the end being separated from the casing by means of the first tool or a second tool by cutting, slicing, sawing and/or other processing during rotation of the roll and/or displacement of the first tool or the second tool round about the periphery of the end, and a device for carrying the method into effect.
    Type: Application
    Filed: November 9, 2010
    Publication date: September 6, 2012
    Inventors: Ola Henriksson, J├Ârgen Jensen, Nils Strandh
  • Publication number: 20120048080
    Abstract: A device for treating at least a medical sac and relative method, including at least a containing element, inside which the medical sac is accommodated according to a main positioning axis, and a cutting unit, containing at least a cutting element associated with movement elements to open the sac with the purpose of allowing the sac to be emptied and/or subsequently washed and/or disinfected. The movement elements are able to move, in sequence, the cutting unit in a first direction approaching the sac, substantially perpendicular to the main positioning axis of the sac, and in a second direction, substantially parallel to the main positioning axis of the sac, after having at least contacted and/or holed the sac with the cutting element during the first movement in order to effect the cutting action on the sac.
    Type: Application
    Filed: May 5, 2010
    Publication date: March 1, 2012
    Applicant: STEELCO SPA
    Inventor: Fabio Zardini
  • Patent number: 7506567
    Abstract: A universal window blind trimmer is provided with an interchangeable die assembly. Each die assembly has a window blind head rail receiving opening and window blind bottom rail receiving opening of a different size and shape such that it may be used for trimming a wide variety of window blinds. A double action cam pivotable by a handle is operative for trimming the head rail and bottom rail when the handle is pivoted in one direction and cutting a bundled of window blind slats when the handle is pivoted in another direction.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: March 24, 2009
    Inventor: Zlatan Simokovic
  • Patent number: 7111538
    Abstract: In order to process by the same step even if the processing directions are different, reduce the number of the constituting parts of the die required for all the steps of the press dying as much as possible, easily design, and easily respond to the design change a double acting cam die comprising a slide cam base, a slide cam guided by the slide cam base and having a first processing member mounted thereto. An energizing body which is interposed between the slide cam base and the slide cam so as to energize the slide cam. An actuating cam which is brought into contact with the slide cam base and the slide cam so as to drive the slide cam, and has a second processing member mounted thereto. A guiding member which guides the actuating cam, and an energizing body which is interposed between the guiding member and the actuating cam so as to energize the actuating cam. An angle of processing incline of the second processing member is brought into line with an angle of cam incline of the slide cam base.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: September 26, 2006
    Assignee: Umix Co., Ltd.
    Inventor: Noritoshi Kitamura
  • Patent number: 6619175
    Abstract: A V-cutter for use in forming V-shaped grooves (3) on a light guide panel (1) of the backlight unit for a liquid crystal display (LCD) is disclosed. The V-cutter may include a Z-axis lift piece (7) and a W-axis lift piece (8), each of which has a pin kit (10a, 10b) with a plurality of pins (9a, 9b) attached at the bottom thereof. The pins (9a, 9b) are preferably equal in number and spacing to the V-shaped grooves (3) to be formed. The lift pieces (7, 8) may be vertically actuated by a Z-axis controller (5) and a W-axis controller (6). The light guide panel (1) is preferably fixtured to a table (11). The lift pieces (7, 8) are configured to move with respect to the table (11) so that, through successive X-axis and Y-axis operations, the V-shaped grooves can be formed in perpendicular directions with only two reciprocating motions. As a result, the manufacturing cost of the light guide panels (1) is reduced.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: September 16, 2003
    Assignee: Fawoo Technology Co., LTD
    Inventor: Young Ho Yoo
  • Patent number: 6523444
    Abstract: In a method for cutting at least one workpiece section (1), in particular aluminum section, which may have been produced in an extrusion press, using a sawing device (19) which, on a frame (5), is displaced along an X-axis above a conveyor device (2) for workpiece sections (1), a saw (13) is displaced with respect to the sawing device (19, 25) in an X-direction and/or Y-direction above the conveyor device (2) for workpiece sections (1), in order to cut at least one workpiece section (1), at least one saw bench (15) is moved into a conveyor plane (20) of the conveyor device (2) for workpiece sections (1), the at least one workpiece section (1) then being moved in via the at least one saw bench (15) and then being cut through.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: February 25, 2003
    Inventor: Christoph Keller
  • Patent number: 6510773
    Abstract: An apparatus for cutting segments from a long sheet of multilayered elastomeric material. An initial opening is formed in the sheet without severing reinforcing cords within the elastomeric sheet by a penetrator/separator. Two ultrasonic knives are inserted on either side of the penetrator/separator and positioned to cut the sheet at a small skive angle &agr; with respect to the plane of the sheet being cut. Then the knives are moved to opposite edges of the sheet of elastomeric material.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: January 28, 2003
    Assignee: The Goodyear Tire and Rubber Company
    Inventors: James Michael Hart, James Alfred Benzing, II
  • Patent number: 6418824
    Abstract: A press for forming a workpiece with a tooling set includes an actuator assembly carrying a movable half or punch of the tooling set and having a two phase operation. In the first phase the actuator provides relatively low force in moving the punch to an intermediate position in close proximity to the workpiece. A sensor detects the position of the punch, and when the punch reaches the intermediate position provides a continue signal. The second phase of actuator operation is conditioned on occurrence of the continue signal, and uses normal high force to press the movable tooling half against the workpiece to complete the operation. The low force first phase allows obstructions of any kind to stop movement of the punch during the first phase before high force applied to the actuator may cause damage or injury to the obstruction. In a preferred embodiment the actuator assembly has hydraulic operation.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: July 16, 2002
    Assignee: PCPS Limited Partnership
    Inventors: Terrence P. Duggins, Robert L. Hughes, Edward L. Schwarz
  • Publication number: 20020007709
    Abstract: In a method for cutting at least one workpiece section (1), in particular aluminum section, which may have been produced in an extrusion press, using a sawing device (19) which, on a frame (5), is displaced along an X-axis above a conveyor device (2) for workpiece sections (1), a saw (13) is displaced with respect to the sawing device (19, 25) in an X-direction and/or Y-direction above the conveyor device (2) for workpiece sections (1), in order to cut at least one workpiece section (1), at least one saw bench (15) is moved into a conveyor plane (20) of the conveyor device (2) for workpiece sections (1), the at least one workpiece section (1) then being moved in via the at least one saw bench (15) and then being cut through.
    Type: Application
    Filed: September 26, 2001
    Publication date: January 24, 2002
    Inventor: Christoph Keller
  • Patent number: 6324953
    Abstract: A device for forming a cutting blade for prints is disclosed. The device of this invention forms cutting blades by appropriately bending and cutting a metal strip into desired blades through integrated work regardless of a difference in the size of metal strips. The device is also provided with changeable jigs, thus being capable of forming bridge notches having different intervals, widths and configurations. The device has one vertically movable bending pin and one swing cutter. The bending pin is capable of quickly bending a metal strip into a desired configuration, while the swing cutter finely and precisely cuts the metal strip into cutting blades. The device also quickly produces high precision cutting blades, thus improving productivity and reducing the cost of the cutting blades.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: December 4, 2001
    Inventor: Hong Soon Park
  • Patent number: 5448933
    Abstract: A method and apparatus for stamping a strip of material to prevent slug "back out" is disclosed. The stamping machine has a punch which moves through a first stroke and a second stroke. A slug receiving opening is provided in the die. The punch is moved during the first stroke into engagement with the strip of material. A slug is punched from the strip of material to form an opening therein. The punch is then moved through a second stroke, in which the punch is moved through the opening in the strip of material. As this occurs, the punch forces a volume of gas ahead of the punch, so that the volume of gas cooperates with the slug to force the slug into the slug receiving opening.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: September 12, 1995
    Assignee: The Whitaker Corporation
    Inventor: Dimitry G. Grabbee
  • Patent number: 5024130
    Abstract: Apparatus (10) for repeatedly severing rubber and plastic material (T) at selected locations along a length thereof including a frame (15), an arbor (41) mounted on the frame carrying a knife blade (50) for rotation in a circular path, a guide for supporting the material to be severed in the path of rotation of the knife blade, a rotary actuator (56) for selectively intermittently driving the arbor for instituting rotation of the knife blade, and a cylinder assembly (90) for supplementing the driving of the arbor and for braking the arbor to a stop after the knife blade has severed the material.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: June 18, 1991
    Assignee: Extrusion Services, Inc.
    Inventor: Donald F. Hays, Jr.
  • Patent number: 4989393
    Abstract: A web of heat-sealable film is advanced in overlying relation with filled cups to a sealing station where both the web and the cups dwell momentarily. During the dwell period, sealing heads advance downwardly and seal the web to the upper end portions of the cups. The heads are advanced downwardly with a two-step stroke, the heads first advancing in unision with a carriage and then being individually advanced by individual pneumatic actuators which are mounted on the carriage. After being sealed, the cups are indexed to a cutting station where annular knives are advanced downwardly to cut through the web and leave each cup with a circular sealing membrane. The knives are advanced with a two-step stroke similar to that of the sealing head.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: February 5, 1991
    Assignee: Rutherford Engineering, Inc.
    Inventors: Frank E. Sell, John H. Adams
  • Patent number: 4798115
    Abstract: A pneumatic drive for punching, cutting and stamping devices, which have two tool parts which can be moved toward one another, and of which preferably one, at least in the operating position, is fixedly connected to the machine frame, is constructed such that an opening gap, which is as large as possible, is created. Furthermore, when the tool parts are moved together, the pneumatic drive is operated at a low pressure, so that additional safety devices are not needed. A pneumatic cylinder is secured on the movable tool part for this purpose, the piston rod of the pneumatic cylinder being constructed lockably in at least one end position. The piston rod of a pressure clamping element is secured on the piston rod exiting from the pneumatic cylinder. The cylinder of the pressure clamping element is arranged or fixably stationarily and consists of at least two piston cylinder units with one common piston rod, which piston cylinder units are connected one behind the other.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: January 17, 1989
    Assignee: Kraemer & Grebe GmbH & Co. KG Maschinenfabrik
    Inventor: Alfred Schmeck
  • Patent number: 4748880
    Abstract: The invention relates to a process and apparatus for truncating tubes by means of a knife activated by a jack. The knife is mounted on a knife carrier pivotable on a base by one of the ends of a jack the other end of which is journalled on a lever similarly pivotable on the base and which rests in part on an elastic abutment adapted to pivot the lever towards the tube to be cut after having been compressed by the lever during a pivoting of the lever in a direction opposite to the tube and after an interruption of the extension of the jack, with a stop being provided to limit the extent of pivoting of the lever in the direction opposite of the tube to be cut.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: June 7, 1988
    Assignee: Lhomme S.A.
    Inventor: Jean-Paul Languillat
  • Patent number: 4748884
    Abstract: The invention provides a cutting assembly for cutting a moving strip of thin flexible material across its width, avoiding the possibility that the flexibility of the material will permit it to move away from the knife edge and not be cut, or be cut unevenly. The assembly comprises a knife-supporting member which is engaged with the moving strip and displaces it out of its usual path close to a roll in the path, so that a very short length of the strip is between two contacting members in the path adjacent to the knife. The knife is provided along its length with a plurality of distributed strip-engaging points pointing in the direction opposite to its direction of movement, which are moved into engagement with this short supported length of the strip, so that the strip movement drives it onto the points, and thereafter continues the movement of the strip into positive engagement with the succeeding knife edges.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: June 7, 1988
    Inventor: Mirek Planeta
  • Patent number: 4632000
    Abstract: A control device for the driving and translation, in a chosen direction, of the movable head of a diecutter machine, provides for the pre-setting of the direction of translation and for the successive driving of the pressing head by means of five sets of sensitive plates switches, disposed in the front portion of the machine. By touching opportunely one or two of said plates, combinative logic circuits are activated that allow selection of the direction of motion, the actuation of the thus preset displacement and the lowering of the head for the cutting operation.
    Type: Grant
    Filed: April 25, 1985
    Date of Patent: December 30, 1986
    Assignee: Atom S.p.A.
    Inventor: Emiliano Cantella
  • Patent number: 4572046
    Abstract: A apparatus and method for applying a stabilizer ply to a tire building drum and more particularly a apparatus and method for cutting and applying the stabilizer ply material and specifically apparatus for cutting the stabilizer ply material between cords disposed therein and correcting for variations of the cord angles during the application process in order to provide an improved splice between the leading and trailing edges of the stabilizer ply material.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: February 25, 1986
    Assignee: The Firestone Tire & Rubber Company
    Inventors: Donald O. Still, Hubert T. Hovance
  • Patent number: 4555928
    Abstract: A press for assembling a fastener or the like to a plate or the like comprises a frame and an anvil assembly carried by the frame. A linkage mechanism assembly is carried by the frame and includes two links. A ram assembly is operatively connectable to one of the two links. A first fluid operated cylinder and piston assembly holds the ram assembly in a raised position. A first switch terminates the flow of fluid to the first cylinder, thereby permitting the ram assembly to drop. A second fluid switch is activated after a sufficient drop of said piston to energize a second fluid operated cylinder and piston assembly for extending and retracting said links, and thereby move one of said links into force transmitting relationship with said ram assembly, to thereby cause said ram assembly to move forcefully down toward the fastener for the purpose of installing the fastener into the plate.
    Type: Grant
    Filed: April 27, 1983
    Date of Patent: December 3, 1985
    Assignee: Penn Engineering & Manufacturing Corp.
    Inventor: David M. Hansen
  • Patent number: 4534247
    Abstract: The present invention relates generally to bandsaw machines having a flexible bandsaw blade trained around a plurality of wheels to perform cutting operations and, more particularly, pertains to a method and apparatus for controlling the feeding of the bandsaw blade into a workpiece such that the bandsaw blade is fed intermittently into the workpiece so as to prevent the blade from deflecting off the workpiece and causing work hardening of the workpiece. An alternative embodiment of the invention provides feeding the workpiece into the bandsaw blade in an intermittent fashion.
    Type: Grant
    Filed: June 7, 1983
    Date of Patent: August 13, 1985
    Assignee: Amada Company, Limited
    Inventor: Masayuki Taguchi
  • Patent number: 4526076
    Abstract: A multiple stroke shear for cutting bar stock and like workpieces incorporates a pair of hinged jaws with opposed cutting blades mounted thereon. A control assembly mounted in the jaws interconnects the jaws to control the position of the cutting blades relative to one another and applies the cutting force between the cutting blades when successively activated by an operating lever attached to the control assembly in the upper jaw. The control assembly includes provision for maintaining contact with a workpiece between successive cutting strokes. In one embodiment, a handle attached to the lower jaw is used with the operating lever to control and operate the shear manually at the worksite. In a second embodiment, a bracket replaces the handle to attach the shear to a fixed support.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: July 2, 1985
    Inventor: Robert V. Hogan
  • Patent number: 4418595
    Abstract: Method for operating an automatic hollow punch search device and relevant control, for die-cutting machines, particularly for footwear production, in which a mobile head is associated to a device to move it to and fro, both horizontally and vertically, above a fixed faceplate on which the material to be cut is placed, together with a hollow cutting punch. The movement devices are automatically piloted by a drive circuit interlocked to manual starting device which provides means to carry out a complete head movement operating sequence from its positioning above the hollow punch to its lowering and return to the starting point after cutting.
    Type: Grant
    Filed: June 2, 1982
    Date of Patent: December 6, 1983
    Assignee: Atom S.p.A.
    Inventor: Emiliano Cantella
  • Patent number: 4393736
    Abstract: A cutting device used in conjunction with an apparatus for processing a continuously advancing strand material is actuated by an air cylinder that is preloaded to full pressure before moving the blade to cut the strand. An air activated linkage releases the cutting blade to begin its travel under full operating pressure.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: July 19, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas R. Clark, Alvin E. Lillmars, Elwood A. Roth, Alvin L. Schmick, Maurice C. Todd
  • Patent number: 4327620
    Abstract: A slitter having multiple spaced pairs of arbors carried upon a rotatable housing which is shiftable as a unit toward and away from a second housing which is adapted to support a selected pair of such arbors during the slitting operation.
    Type: Grant
    Filed: January 7, 1980
    Date of Patent: May 4, 1982
    Assignee: Braner Enterprises
    Inventors: James Greinke, Douglas Matsunaga, Eric W. Mosquera
  • Patent number: 4320676
    Abstract: There is herein described a blanking press in which a punch is moved upwardly under pressure to engage a sheet workpiece and pass through a punch-conforming die plate aperture, the press housing including a product retrieving and operator-viewing opening in the upper end thereof to allow an operator to directly view the alignment of the workpiece relative to the die opening and the operation of the press by looking in a downward direction.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: March 23, 1982
    Inventor: Roland C. Eberhardt
  • Patent number: 4309929
    Abstract: A trim press employs a hammer assembly to deliver a hammer blow to the punch of the press at the moment the punch begins to apply shearing pressure to material being trimmed. A spring system applies a steadily increasing spring loading to the hammer as the punch carrying platen moves downwardly in its operating stroke toward the die. A latch assembly, triggered by an abutment on the die, unlatches the hammer at the time the punch engages the material so that the downward velocity of the punch due to the downward movement of the platen is increased by a hammer blow as the punch moves through the material being trimmed. The spring system is operable to restore the hammer to its latched position during the upward stroke of the platen.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: January 12, 1982
    Assignee: Leesona Corporation
    Inventor: Edward E. Batson
  • Patent number: 4214357
    Abstract: A rivetting machine for use with commercial vehicle brake-shoes, the machine having a punch holder, an anvil adjustable in height relative to the punch holder, a sprung rest for a brake shoe, and mechanism for linearly, operatively moving the punch holder, the mechanism comprising a lever actuable by a first pneumatic cylinder to take up free movement between a punch in the holder and a brake shoe on the rest, and a second pneumatic cylinder which produces further movement to effect a working operation on the brake shoe, a safety device being provided, so that, if, during the free movement, the punch holder meet resistance, the holder is immediately retracted.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: July 29, 1980
    Assignee: Purpose Engineers Limited
    Inventor: Elsworth R. Delves
  • Patent number: 4210047
    Abstract: Interposed between the cutting surface and the pressure head is a magnetic die holder including base and die carrying sections, the former being mounted on a telescoping member which is pivotally connected to the head for vertical movement therewith and which permits movement of the holder in a plane parallel to the cutting surface. The base and die carrying sections are connected by a spring to permit the die carrying section to be vertically displaced with respect to the base section for accurate positioning of the die relative to the cutting surface. The die carrying section is also rotatable relative to the base section to permit orientation of the die at any angle with respect to the cutting surface. The die carrying section includes an electromagnet which retains the die thereon. Also located on the die carrying section are a pair of handle grips, each having a switch mounted thereon, both of which must be simultaneously actuated in order to initiate vertical movement of the pressure head.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: July 1, 1980
    Assignee: Herman Schwabe, Inc.
    Inventors: Edgar Haas, Edward Kottsieper
  • Patent number: 4202433
    Abstract: An arrangement for protecting tools in a hydraulic press against overloading if a foreign object or body is present in a tool space of the hydraulic press. A displacement or travel switch monitors at least a portion of a path of movement of a press ram with a control member providing an output signal during a predetermined movement of the press ram. A control circuit evaluates a sequence of the output signals of the displacement or travel switch and the control member in such a manner that a fault signal is formed when the additional switching device provides an output signal prior to an output signal of the displacement or travel switch. The control member is arranged in a path of force of at least one component of the hydraulic press and is constructed as a signal transducer operating virtually stationarily as a function of pressure.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: May 13, 1980
    Assignee: SMG Suddeutsche Maschinenbau-Gesellschaft mbH
    Inventor: Horst Baltschun
  • Patent number: 4192414
    Abstract: An arrangement for protecting tools in a hydraulic press against overloading if an object is present in a tool space of the hydraulic press. A displacement switch monitors at least a portion of a path of movement of a press ram with an additional switching device providing an output signal during a predetermined movement of the press ram. A control circuit evaluates a sequence of the output signals of the displacement switch and additional switching device in such a manner that a fault signal is formed when the additional switching device provides an output signal prior to an output signal from the displacement switch. The additional switching device may be constructed as a switch element which provides an output signal in dependence upon a pressure or a speed of flow of a pressure medium in a hydraulic circuit.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: March 11, 1980
    Assignee: SMG Suddeutsche Maschinenbau Gesellschaft mbH
    Inventor: Horst Baltschun
  • Patent number: 4189966
    Abstract: The specification discloses a hydraulic pressure operated hand tool of the type in which the manual pressure exerted on a small-area pump piston creates a hydraulic pressure which is communicated to a power cylinder for activating a hand tool jaw member, such as a cutter blade. Preliminary take-up movement of the cutter blade into contact with the object to be severed, such as cables, pipe etc., is effected by manual pressure applied to a second pump piston of relatively large area, which causes rapid displacement of the hydraulic medium from a reservoir to the power cylinder before exertion of manual pressure to the small-area pump piston. A release valve provides instant return displacement of hydraulic medium via a by-pass communication from the cylinder to the reservoir to relieve the activating pressure on the cutter blade and restore it promptly to normal position. Interchangeable cutters are provided.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: February 26, 1980
    Inventor: Ronald E. Keigley
  • Patent number: 4183273
    Abstract: A slitter having multiple spaced pairs of arbors carried upon a rotatable housing which is shiftable as a unit toward and away from a second housing which is adapted to support a selected pair of such arbors during the slitting operation.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: January 15, 1980
    Assignee: Braner Enterprises, Inc.
    Inventors: James G. Greinke, Douglas S. Matsunaga, Eric W. Mosquera
  • Patent number: 4100828
    Abstract: A multicell battery case, adaptable for use with a variety of cell-pack sizes, is molded with universal-sized cell compartments and opposing spacer-ribs projecting a predetermined distance into the cell compartments from the compartments' walls so as to provide an inter-rib gap across the compartment substantially equal to the narrowest cell pack useful with that case. The case is thereafter adapted for use with thicker cell packs by trimming back the opposing ribs to increase the gap therebetween to approximately the thickness of the cell pack actually destined for use with that case. Preferably, rib-shaving blades are inserted into the case and guided in spaced relation from the rib-bearing walls to remove distal portions of the ribs. Means are provided to detach the shavings from the container at their roots.
    Type: Grant
    Filed: May 19, 1977
    Date of Patent: July 18, 1978
    Assignee: General Motors Corporation
    Inventor: Robert H. Thune
  • Patent number: 4092891
    Abstract: Apparatus for cutting rolled steel sections with a web and one or more flanges angled in respect to the web as profiled cutters movable relative to each other on a common axis and kept parallel to each other at the time of cut. The cutter edges for cutting the web of the section extend in an inclined manner at an acute angle with respect to a plane at right-angles to the axis of travel of the cutters. These cutter edges which extend to follow the shape of the flanges at least as far as these extensions are located inside the projection of the section on the normal plane.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: June 6, 1978
    Assignee: Sack GmbH
    Inventors: Manfred W. Hansen, Emil F. Kersting
  • Patent number: 4088048
    Abstract: A method and a device for holing an oblong member, particularly a guard rail, substantially directly in front of a hole in a second member, particularly a pole, by utilizing a punching device comprising a punch and first and second pressure means with different ratios, of which the first means causes the punch to abut the oblong member, and the second means effects further movement of the punch to carry out holing in said member.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: May 9, 1978
    Assignee: Hans Olssons Mekaniska Verkstad AB
    Inventor: Hans Olsson
  • Patent number: 4022096
    Abstract: Hydraulic press for performing shearing, cutting and bloom-compression operations comprising a pressure-fluid accumulator operatively connected to the working chamber of the main piston having its rod rigid with a slide member coupled via linkage means and a bell-crank lever to the longitudinal stem of a spool valve movable in a spool valve chamber communicating via a first port to the fluid reservoir, via a second port to the accumulator and via a third port to the pressure chamber of the main piston.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: May 10, 1977
    Assignee: Societe des Anciens Ateliers H. Jambon
    Inventor: Gaston Sebastien Forichon
  • Patent number: 3991639
    Abstract: Apparatus for protecting tools of hydraulically operated fine punch presses of the type having a main piston as well as quick-closing pistons for imparting movement to the press ram. Keying pistons are arranged at the ram in series with and extending in the same direction as the quick-closing pistons to form a keying gap, variable in response to resistance pressure applied to the ram movement at or near the closing operation. A safety stop switch is arranged for detecting the keying gap and for effecting a stoppage of the machine in the event the keying gap is below a predetermined amount indicating an impediment in the path of the ram.
    Type: Grant
    Filed: April 23, 1975
    Date of Patent: November 16, 1976
    Assignee: SMG Suddeutsche Maschinenbau-Gesellschaft mbH
    Inventor: Friedrich Pfeifer
  • Patent number: 3972214
    Abstract: In a machine for manufacturing wire coils, wire is fed by a feeder and is shaped in a winding station to form a continuous helix the convolutions of which may adjoin each other or may be spaced predetermined distances apart. This continuous helix is cut by cutting means into wire coils having a predetermined length or number of convolutions. These coils may constitute springs or may preferably constitute electric resistance heating coils. To control the length of the wire coils, a sensing wheel is associated with the winding station and is driven by the wire and operates control means for controlling the cutting means in such a manner that the length of each severed coil is determined by the preset, measured wire length.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: August 3, 1976
    Assignee: Bleckmann & Co.
    Inventor: Adolf Jagersberger