Force Feed Patents (Class 72/45)
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Patent number: 4283931Abstract: An extrusion machine is disclosed wherein wax or other suitable lubricant is applied to the side of the feedstock contacting the shoe of the extruder. A stick of wax may be supported in a cylinder having an open end facing the feedstock; the stick is a loose sliding fit in the cylinder and compressed gas introduced into the cylinder applies a substantially constant biassing force urging the stick into engagement with the feedstock and at the same time, by leaking between the stick of lubricant and the cylinder, cools the stick of lubricant to inhibit melting.Type: GrantFiled: July 30, 1979Date of Patent: August 18, 1981Assignee: BICC LimitedInventors: Stanley W. Pigott, Peter Gregory
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Patent number: 4272976Abstract: A hot strip rolling mill stand, and more particularly a mill stand for use in the hot rolling process of a continuous strip casting system for aluminum, aluminum alloys and other metals, and which includes an improved means for the discrete applications of coolant for cooling rolls and to maintain thermostability and also for applying direct application lubricant for the strip being reduced.Type: GrantFiled: June 5, 1979Date of Patent: June 16, 1981Assignee: Mesta Machine CompanyInventor: Ronald D. Pizzedaz
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Patent number: 4262512Abstract: A drawing and ironing assembly consists of a redraw assembly, at least one ironing assembly and a stripper assembly that cooperate with a punch to redraw a cup and then iron the sidewall thereof. The redraw assembly includes a support and a redraw ring which are also biased to a centered position and a floating air bearing is defined between the support and the frame surface to reduce friction while a nesting ring is located adjacent the redraw ring. Lubricating means are provided for creating a generally circumferential flow into the opening in the nesting ring. The stripper assembly includes a support which carries the stripper elements and the support is biased to a centered position with respect to a predetermined axis or path for the punch and fluid is supplied to relatively movable surfaces to assist in reducing friction.Type: GrantFiled: April 26, 1978Date of Patent: April 21, 1981Assignee: National Can CorporationInventor: Edward G. Maeder
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Patent number: 4262513Abstract: A method and apparatus are provided for continuously extruding rod feedstock through a die orifice while gripping two opposed sides of the feedstock to a pressure greater than the yield strength of the material with means for applying lubricant to the ungripped surfaces, constraining walls between which the feedstock is fed in the gripped condition, a stop at one end of the constraining walls, and a die orifice near the stop through which the feedstock is extruded, said lubricant applying means including at least two cylinders each having an open end facing a respective one of the ungripped surface when the apparatus is in use and means for introducing compressed gas into each of the cylinders.Type: GrantFiled: July 30, 1979Date of Patent: April 21, 1981Assignee: BICC LimitedInventor: Stanley W. Pigott
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Patent number: 4223544Abstract: A reciprocal ram carries a metallic cup on an end thereof axially through a die pack opening and a die ring thereof in a working metal forming stroke, the cup is stripped therefrom and the ram moves reversely through the die ring in a return stroke. An annular lubricant nozzle surrounding the die pack opening forwardly adjacent the die ring directs an annular flow of lubricant continuously axially along and against an angled die ring entrance surface to a die ring forming surface during presence of the cup therein, and over the die ring forming surface and through natural adherence along a die ring angled exit surface during lack of presence of the cup regardless of the ram position in its strokes.Type: GrantFiled: September 2, 1975Date of Patent: September 23, 1980Assignee: Standun, Inc.Inventor: Ralph M. Main
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Patent number: 4201070Abstract: A graphite lubricant system for applying a coating of the lubricant to successive mandrels in a seamless pipe mill just prior to their insertion therein. The system provides for the selective application of the smokeless lubricant to the mandrels before they are inserted within the seamless pipe shell and both are run into the mill itself. In order to prevent the lubricant from clogging, the system includes a self-flushing arrangement which provides a cleaning function thereto when the system has been inactive for a given amount of time.Type: GrantFiled: October 2, 1978Date of Patent: May 6, 1980Assignee: United States Steel CorporationInventors: John J. Seaton, James K. Slagle
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Patent number: 4192162Abstract: A tube extrusion press extrudes tubes through the annular space formed when a mandrel projects into the aperture of an extrusion die. In order to prevent oxidation of the extruded product, the outside of the tube passes into a cooling section immediately downstream of the die, and a protective gas is blown into the interior of the tube through the mandrel which is hollow and has an opening in its tip. Both the inside and the outside of the tube may be coated with a liquid emulsion, and the hollow mandrel can have internal channels for the passage of a cooling liquid.Type: GrantFiled: August 29, 1978Date of Patent: March 11, 1980Assignee: Schloemann-Siemag AktiengesellschaftInventors: Franz-Josef Zilges, Heinrich Kutz
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Patent number: 4179909Abstract: A domer assembly which cooperates with the punch of a drawing and ironing machine to reform an end wall of a container includes a support that has a flat supporting surface defined in the bottom of a recess and a carrier element having a cooperating surface engaging the flat bottom surface. A domer element is supported on the carrier element and both are movable as a unit radially of the path of movement of the punch and are normally centered with respect to the axis of the punch through biasing springs which will accommodate radial movement. The assembly also includes means for supplying air between the surfaces to act as a fluid bearing and reduce friction.Type: GrantFiled: April 26, 1978Date of Patent: December 25, 1979Assignee: National Can CorporationInventor: Edward G. Maeder
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Patent number: 4169174Abstract: Flexible core such as rubber rod useful as an internal mandrel in the construction of tubular articles, such as hose, is coated with a liquid lubricant substantially undiluted with solvent, and excess lubricant is removed using high pressure liquid spray jets impacting the core angularly and countercurrent to the direction of movement of the mandrel.Type: GrantFiled: December 15, 1978Date of Patent: September 25, 1979Assignee: The Gates Rubber CompanyInventor: Guy T. Bixby
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Patent number: 4132096Abstract: A graphite lubricant system for applying a coating of the lubricant to successive mandrels in a seamless pipe mill just prior to their insertion therein. The system provides for the selective application of the smokeless lubricant to the mandrels before they are inserted within the seamless pipe shell and both are run into the mill itself. In order to prevent the lubricant from clogging, the system includes a self-flushing arrangement which provides a cleaning function thereto when the system has been inactive for a given amount of time.Type: GrantFiled: October 7, 1976Date of Patent: January 2, 1979Assignee: United States Steel CorporationInventors: John J. Seaton, James K. Slagle
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Patent number: 4063439Abstract: An improvement in a process and apparatus for internal finishing and calibrating tubes is provided in which the internal surface of the tube is sprayed during the work on the tube with at least one lubricating jet directed to the work zone ahead of the passage of the tool.Type: GrantFiled: September 22, 1975Date of Patent: December 20, 1977Assignee: Chabas & Besson S.A.Inventor: Louis A. Besson
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Patent number: 4043166Abstract: Removing the crust of oxide formed on the surface of a continuously casted copper bar by projecting a liquid (water or a rolling emulsion) under pressure of between 20 and 60 atmospheres against the periphery of the bar, the flow of the liquid under pressure being less than 50 liters/minute.Type: GrantFiled: January 29, 1976Date of Patent: August 23, 1977Assignee: Metallurgie Hoboken-OverpeltInventor: Jean Leroy
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Patent number: 4041742Abstract: An apparatus and method for cold working metal powder to produce a metal powder highly suited for consolidation wherein the apparatus comprises a cold rolling mill including a pair of driven rolls mounted within a sealed work chamber for receiving and deforming a closely metered amount of powder. The work chamber is continuously purged with an inert atmosphere to protect the powder from gaseous contaminants and circulating and filter means is provided for removing solid contaminants. To facilitate cold rolling the powder is lubricated prior to passage through the rolls and brushes are provided for cleaning any adhering powder from the surface of the rolls. The resulting cold worked powder particles have a coin, or plate-like, shape and demonstrate desirable properties for hot consolidation, such as, a low incidence of hollow particles and nonmetallic inclusions, the capability of achieving a condition of superplasticity, and an increased tap density of the loose powder.Type: GrantFiled: January 15, 1976Date of Patent: August 16, 1977Assignee: Kelsey-Hayes CompanyInventor: Walter J. Rozmus
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Patent number: 4030328Abstract: The invention concerns a process and device for carrying out the process for the provision of continuous lubrication of the working surface of an extrusion die. The surface of the extrusion billet is lifted locally from the die surface during extrusion and the lubricant is introduced into the resultant dead space and from there onto the surface of the billet, the working surface of the die and throughout the die as extrusion progresses.Type: GrantFiled: December 4, 1975Date of Patent: June 21, 1977Inventors: Alfred Wagner, Hermann Kidratschky
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Patent number: 4028918Abstract: Device for applying lubricant to the workpiece and/or working surface of the punch of a multistage forging press. Channels are provided between the stepped holding pin of the punch and the wall of the stepped bore in which the holding pin reciprocates. The channels are connected via the interior of the punch to an external lubricant reservoir. The space formed with each stroke of the punch between the shoulders of the holding pin and its stepped bore acts as a pumping space. Each punch stroke causes lubricant to be drawn from the reservoir into the pumping space and subsequently forced out through the channels. Means are also provided by which the supply of lubricant from the reservoir can be more closely regulated in time with the working stroke of the press.Type: GrantFiled: January 14, 1976Date of Patent: June 14, 1977Assignee: Hatebur Umformmaschinen AGInventor: Hans Kuhn
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Patent number: 4015459Abstract: Multiple gauge metal strip is prepared by a process which comprises shaping strip material of rectangular cross section to form regions of at least two variable thicknesses defining a stepped surface configuration in at least one of the broad surfaces of said strip, and drawing the shaped strip through a die which defines said cross sectional configuration to produce a reduction of said strip to final dimension, wherein said drawing step is performed without direct surface-to-surface contact between said strip and said die, such that the width dimension of said strip is unchanged and the ratio of strip surface to strip cross sectional area changes by at least 30%. The drawing method of this invention employs hydrodynamic lubrication and can achieve one-pass cross sectional reductions of from 39 to 55%.Type: GrantFiled: December 31, 1975Date of Patent: April 5, 1977Assignee: Olin CorporationInventors: Joseph Winter, Eugene Shapiro, Warren F. Smith
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Patent number: 3946582Abstract: A wiredrawing diestock having wire inlet and outlet openings aligned coaxially with the a die aperture there-between. The diestock has a first chamber disposed around the wire inlet. It has a second chamber surounding the die. Several openings provide communication between the two chambers and allow the flow of liquids from the first to the second chamber. These latter openings have positions equally spaced from the axis of a wire being drawn through the wire inlet opening and the die. The openings have individual axes which converge at the axis of the wire at a point where the wire enters the die. The lubricating cooling liquid, fed under pressure to the first chamber, flows through these openings in streams having flow paths converging on the wire being drawn. The pressure of the liquid is maintained in the second chamber. Liquid can escape from that chamber only through the wire inlet and outlet openings, and these openings are largely filled by the wire passing through them.Type: GrantFiled: October 23, 1974Date of Patent: March 30, 1976Assignee: Technofil S.p.A.Inventor: Piero Pietroni
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Patent number: 3945231Abstract: In preparing thin walled cylindrical containers, e.g., can bodies, by the drawing and ironing processing, the lubricating effect between the metal material and tool metal can be highly improved by irradiating ultrasonic waves at least to the part to be ironed of the side wall portion of a cup-like formed article simultaneously with application of a lubricant. With the improvement of the lubricating effect thus attained, the manufacturing rate of can bodies can be greatly increased without such troubles as breakages of the head portion, the ear edge portion and the bottom wall portion of the can body. This improvement of the lubricating effect can be further enhanced when ultrasonic waves are irradiated in the direction perpendicular to the tapered face of a tapered inlet portion of an ironing die.Type: GrantFiled: October 29, 1974Date of Patent: March 23, 1976Assignee: Toyo Seikan Kaisha LimitedInventors: Katsuhiro Imazu, Masao Miyata
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Patent number: 3943740Abstract: The tool pack is designed for mounting on a metal drawing machine or press, and includes a frame having a mounting slot for holding a cartridge that carrys a drawing die, the mounting slot having a right angle corner formed therein against which the cartridge is seated and removably secured by hydraulic clamping apparatus, whereby precise positioning of the cartridge is assured. The cartridge includes screw actuated fluid adjusters for precisely positioning the die in two directions, to secure accurate alignment. Mounted rearwardly of the cartridge is a stripper assembly including radially movable, pivoted jaws that are hydraulically extended and retracted to provide stripping action.Type: GrantFiled: April 1, 1075Date of Patent: March 16, 1976Assignee: Vermont Marble CompanyInventor: Michael F. Bartenstein