Patents Assigned to National Machinery LLC
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Patent number: 11333473Abstract: A method and tooling for forming a cartridge case blank comprising backward extruding a tube from a length of wire stock in multiple backward extrusion steps with progressive tooling to obtain an intermediate blank that can be finish drawn without a preceding annealing step and which if otherwise not subjected to multiple backward extrusion steps, would require annealing prior to finish drawing to avoid tearing.Type: GrantFiled: October 23, 2019Date of Patent: May 17, 2022Assignee: NATIONAL MACHINERY LLCInventors: Jeffrey W. Carper, Christopher W. Snavely
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Patent number: 10495430Abstract: A method and tooling for forming a cartridge case blank comprising backward extruding a tube from a length of wire stock in multiple backward extrusion steps with progressive tooling to obtain an intermediate blank that can be finish drawn without a preceding annealing step and which if otherwise not subjected to multiple backward extrusion steps, would require annealing prior to finish drawing to avoid tearing.Type: GrantFiled: March 7, 2017Date of Patent: December 3, 2019Assignee: National Machinery LLCInventors: Jeffrey W. Carper, Christopher W. Snavely
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Patent number: 10369622Abstract: An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.Type: GrantFiled: March 10, 2015Date of Patent: August 6, 2019Assignee: NATIONAL MACHINERY LLCInventors: Thomas E. Hay, Jeffrey W. Carper, Stanley J. Wasserman
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Patent number: 10300515Abstract: A progressive forming machine with die and tool units, one of said units sliding a limited distance along its axis and biased by a spring force towards the other unit, the units each having an end face with a smooth surface finish adapted to press against the smooth surface finish of the end face of the other unit, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in cavity portions is restrained from leakage from the cavity portions across said end faces during a hydrostatic trapped extrusion shaping the workpiece to a degree beyond limits of conventional cold-forming processes.Type: GrantFiled: August 12, 2014Date of Patent: May 28, 2019Assignee: NATIONAL MACHINERY LLCInventors: Thomas E. Hay, Donald E. Krintzline
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Patent number: 10160034Abstract: A progressive former having a bolster and a ram reciprocal towards and away from the bolster, a plurality of workstations evenly spaced across the bolster and ram including aligned tooling piece holders on the bolster and ram, cylindrical die cases in the tooling holders on the bolster and cylindrical tool cases in the tooling holders on the ram, the tooling cases at the workstations being coaxial, a sideways forming mechanism at one of said workstations, the mechanism including a cam and a cam follower radially outward of imaginary outward projections of the associated tooling cases, the cam follower being arranged to be activated by forward motion of the ram towards the bolster, the mechanism including a tool for forming the blank by applying a sideways force on the blank.Type: GrantFiled: January 30, 2017Date of Patent: December 25, 2018Assignee: NATIONAL MACHINERY LLCInventor: Stanley J. Wasserman
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Patent number: 10099272Abstract: A progressive cold forming machine and a robot for automatically changing a cutoff cassette, tooling cassettes, a transfer slide and transfer cam. A loading area adjacent the machine and robot has provisions for supporting a tooling cassette pallet and a transfer slide and camshaft pallet and a holding area for temporarily receiving some of the componentry being exchanged.Type: GrantFiled: September 22, 2017Date of Patent: October 16, 2018Assignee: NATIONAL MACHINERY LLCInventors: Aaron T. Hall, Douglas M. Hoerig, James A. Gase
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Patent number: 10058940Abstract: An impact cutoff device for a progressive high speed cold former having a low mass rigid cutter carriage, a torsion spring for carriage return, and an articulated, oil lubricated and dampened carriage drive block on a pivoting drive lever serving to reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.Type: GrantFiled: October 6, 2015Date of Patent: August 28, 2018Assignee: NATIONAL MACHINERY LLCInventor: Aaron T. Hall
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Patent number: 9802242Abstract: A progressive cold forming machine and a robot for automatically changing a cutoff cassette, tooling cassettes, a transfer slide and transfer cam. A loading area adjacent the machine and robot has provisions for supporting a tooling cassette pallet and a transfer slide and camshaft pallet and a holding area for temporarily receiving some of the componentry being exchanged.Type: GrantFiled: February 26, 2015Date of Patent: October 31, 2017Assignee: NATIONAL MACHINERY LLCInventors: Aaron T. Hall, Douglas M. Hoerig, James A. Gase
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Patent number: 9586246Abstract: A progressive forming machine having a frame supporting a plurality of workstations uniformly spaced in a horizontal plane, a transfer mechanism for shifting parts from one station to another and from a last station to a discharge station, a conveyor in the frame for lowering parts from the transfer discharge station, the conveyor having individual part carriers, the conveyor being arranged to present a carrier beneath the discharge station in timed relation to the operating cycle of the machine.Type: GrantFiled: January 26, 2015Date of Patent: March 7, 2017Assignee: NATIONAL MACHINERY LLCInventors: Stanley J. Wasserman, Douglas M. Hoerig
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Patent number: 9545659Abstract: A tool for a progressive forming machine comprising an assembly having a workpiece shaping cavity symmetrical about an axis and including an end wall transverse to the axis, a conical bore open to the end wall and centered on the axis, the sides of the conical bore being described by a relatively small angle relative to the axis, and an ejector pin for forcing workpieces form the cavity, the ejector pin having an end face and a conical body portion rearward of the end face, the conical body portion having an external surface matching a surface of the conical bore.Type: GrantFiled: February 19, 2015Date of Patent: January 17, 2017Assignee: NATIONAL MACHINERY LLCInventors: Thomas E. Hay, Jeffrey W. Carper
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Patent number: 9120143Abstract: A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.Type: GrantFiled: January 15, 2013Date of Patent: September 1, 2015Assignee: NATIONAL MACHINERY LLCInventor: Jeffrey W. Carper
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Patent number: 9120138Abstract: A method and apparatus for forming metal parts in a progressive forming machine wherein one of the opposed tools on a ram and die breast is spring biased to operatively close the tools before the ram reaches front dead center thereby allowing material of the blank to extrude sideways through an aperture formed by both of the opposed tools in the final forward movement of the ram.Type: GrantFiled: October 10, 2012Date of Patent: September 1, 2015Assignee: NATIONAL MACHINERY LLCInventor: Mark W. Bordner
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Patent number: 9016184Abstract: An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.Type: GrantFiled: September 27, 2012Date of Patent: April 28, 2015Assignee: National Machinery LLCInventors: Thomas E. Hay, Jeffrey W. Carper, Stanley J. Wasserman
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Patent number: 8813533Abstract: A set of tooling for a progressive forming machine comprising die and tool units having internal complementary cavity portions for receiving a workpiece, one of said units being arranged to slide a limited distance along its axis and to be biased by a spring force towards the other unit when the units are mounted in the forming machine, the units each having an end face with a smooth surface finish adapted to press against the smooth surface finish of the end face of the other unit, the end face area of one of the units being relatively small compared to its major cross-sectional area whereby a high contact pressure between the end faces is obtained for a given spring bias force such that extrusion/cooling oil coating a workpiece received in the cavity portions is restrained from leakage from the cavity portions across said end faces during a hydrostatic trapped extrusion of the workpiece in the die and tool units whereby the die and tool units are capable of shaping the workpiece to a degree beyond limits ofType: GrantFiled: September 17, 2009Date of Patent: August 26, 2014Assignee: National Machinery LLCInventors: Donald E. Krintzline, Thomas E. Hay
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Publication number: 20140196518Abstract: A method of improving the surface finish of a sheared end face of a cylindrical blank in a progressive forming machine comprising deforming the end face out of its original as sheared transverse plane into a first shape concentric with the axis of the blank that slightly departs from the original plane a distance that increases with proximity to the axis of the blank, thereafter deforming the end face from the first shape into a second shape in a direction opposite a direction the first shape was displaced from the original shear plane, the second shape slightly departing from a transverse plane a distance that increases with proximity to the axis of the blank.Type: ApplicationFiled: January 15, 2013Publication date: July 17, 2014Applicant: NATIONAL MACHINERY LLCInventor: Jeffrey W. Carper
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Publication number: 20140096584Abstract: A method and apparatus for forming metal parts in a progressive forming machine wherein one of the opposed tools on a ram and die breast is spring biased to operatively close the tools before the ram reaches front dead center thereby allowing material of the blank to extrude sideways through an aperture formed by both of the opposed tools in the final forward movement of the ram.Type: ApplicationFiled: October 10, 2012Publication date: April 10, 2014Applicant: NATIONAL MACHINERY LLCInventor: Mark W. Bordner
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Publication number: 20140083319Abstract: An improved cartridge case completely produced net shape on a progressive cold former that includes a trim to lengthy station with an internal shearing tool.Type: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Applicant: NATIONAL MACHINERY LLCInventors: Thomas E. Hay, Jeffrey W. Carper, Stanley J. Wasserman
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Patent number: 8485013Abstract: A set of tooling for making pointed headed bolts of a given diameter in numerous lengths with roll thread ready threaded to the head and partially threaded shanks in a four forming station forming machine, the tools being configured to work on wire stock as received at the first station of a diameter larger than or substantially the same as the roll diameter and not greater than the nominal diameter of the bolt, including at least two sequential head forming tools for mounting on the slide, an extrusion pointing tool for mounting on the die breast, a roll diameter extrusion tool for mounting on the die breast and a head support tool mountable in a station on the slide at multiple axial positions corresponding to standard lengths of the bolts being made, the head support tool being arranged to work at either the extrusion pointing station or the roll diameter extrusion station.Type: GrantFiled: March 27, 2008Date of Patent: July 16, 2013Assignee: National Machinery LLCInventors: Todd Hossler, Stanley J. Wasserman
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Patent number: D694788Type: GrantFiled: September 27, 2012Date of Patent: December 3, 2013Assignee: National Machinery LLCInventor: Jeffrey W. Carper
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Patent number: D696317Type: GrantFiled: September 27, 2012Date of Patent: December 24, 2013Assignee: National Machinery LLCInventor: Jeffrey W. Carper