Patents Assigned to Meyer, Roth & Pastor Maschinenfabrik GmbH
  • Patent number: 4959519
    Abstract: In a pressure butt welding process, in particular for welding chain link bent from round wire, the influence of disturbing factors on the quality of the welding result is compensated by measuring the welding forces F.sub.K exerted on the workpiece by the upsetting dies and setting and welding voltage applied to the workpiece according to the level of the measured forces F.sub.K. A control means adjusts the welding voltage via a thyristor control circuit and thereby the effective welding power in such a way that the welding forces F.sub.K remain constant.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: September 25, 1990
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Karl-Christoph Exner, Franz Reichow, Horst Becker
  • Patent number: 4175459
    Abstract: A cutting apparatus for severing a wire continuously advanced through the apparatus along a wire path in a feeding direction parallel to the wire axis, comprises a carriage supported for displacement parallel to the feeding direction; two cutting members connected with the carriage; a support arm articulated to at least one of the cutting members; a displaceable anchor member to which the support arm is articulated by means of a support joint arranged on the support arm at a distance from the cutting member; a drive for moving the carriage in and opposite the feeding direction to cause, with the cooperation of the anchor member and the support arm, a motion of the cutting member in an arcuate path towards and, subsequent to severing, away from the wire and the other cutting member; and a force-exerting arrangement for shifting the anchor member to effect a displacement of the support joint and the support arm for affecting the course of the arcuate path of the cutting member.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: November 27, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Gunter Ditges, Wilhelm Mors, Rolf Gartner
  • Patent number: 4163363
    Abstract: Chain links are formed of wire pins by bending each wire pin about work faces of a mandrel with bending tools which engage the pin at the two end zones thereof. The locations of engagement describe, at least during the terminal phase of the bending operation, a circular involute, the reference point of which coincides with the center of curvature of the respective work face of the mandrel.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: August 7, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Herbert Windelbandt, Gunter Ditges
  • Patent number: 4158976
    Abstract: A wire cutting machine for consecutively severing predetermined wire lengths from a continuously fed wire of indefinite length, comprises a wire cutting device and a wire discharge device arranged downstream (as viewed in the direction of wire feed) of the wire cutting device. Th wire discharge device has a wire channel, the walls of which define an elongated channel space which is oriented in the direction of wire feed and within which the wire is advanced. In the channel wall a plurality of openings are provided which are arranged in the longitudinal direction at predetermined distances from one another. A wire length detecting arrangement is operatively connectible with the channel space through any selected one of the openings.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: June 26, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Gunter Ditges
  • Patent number: 4149058
    Abstract: For the successive welding to immediately consecutive links of a chain at a welding station, the chain is advanced to bring each link in turn to the welding station, the links flanking the link to be welded are positioned in a common plane perpendicular to the orientation of the link to be welded by orienting edges of two guides disposed to respectively opposite sides of the welding station, and each guide is constituted by a pair of webs spaced from its respective orienting edge, and arranged to support the straight sides of alternating chain links, and a region between the webs and the orienting edge in which the chain is free to rotate or twist about its longitudinal axis.
    Type: Grant
    Filed: July 28, 1977
    Date of Patent: April 10, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Paul Rahn
  • Patent number: 4133999
    Abstract: For the successive welding of the joints of consecutive links forming a link chain, the chain is advanced in a chain welding machine to bring a link to be welded directly below a welding position; the two links flanking the link to be welded are aligned in a common plane of alignment while a tensioning force is applied to the chain parallel to the direction of chain advance. Thereafter, the link to be welded is raised into a welding position in a plane disposed at 90.degree. to the plane of alignment. Subsequently, the link is immobilized in the welding position and its joint is welded. Upon completion of the welding step, the just-welded link is lowered from the welding position.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: January 9, 1979
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Bruno Ebel, Gunter Krumholz, Paul Rahn
  • Patent number: 4123899
    Abstract: Chain links are formed of wire pins by bending each wire pin about work faces of a mandrel with bending tools which engage the pin at the two end zones thereof. The locations of engagement describe, at least during the terminal phase of the bending operation, a circular involute, the reference point of which coincides with the center of curvature of the respective work face of the mandrel.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: November 7, 1978
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Herbert Windelbandt, Gunter Ditges
  • Patent number: 4078407
    Abstract: In order to accurately control a process in which a structural component of ductile material is subjected to a change in shape by the application of a progressively increasing deformation force while measuring the resulting deformation, the measured deformation is employed to derive a representation of a nominal deformation force which varies as a predetermined function of deformation over a selected deformation range, the representation is compared with the applied deformation force, and the application of the deformation force is terminated upon arriving at a deformation amount for which the applied deformation force coincides in value with the nominal deformation force.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: March 14, 1978
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Gunter Ditges
  • Patent number: 4075451
    Abstract: In the electric butt welding of a workpiece having rod-like ends, a force measuring device senses the pressing force exerted on the workpiece by the upsetting tools. The welding current is started upon command from the force measuring device when the pressing force reaches a desired, preset value.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: February 21, 1978
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Toni Wust
  • Patent number: 4074518
    Abstract: An apparatus for making a link-type belt formed of a plurality of plate members by punching out planar plate members from a sheet metal, wherein each plate member has lateral portions projecting outwardly from two opposite sides of the plate member; prebending the free end of each lateral portion; bending each lateral portion into an orientation substantially perpendicular to the respective plate member; rolling-in each lateral portion for forming hinge eyes on each plate member; aligning the plate members with one another; and inserting a hinge bolt into aligned hinge eyes of adjoining plate members.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: February 21, 1978
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Klaus Taubert, Reimund Benner, Friedrich Judt
  • Patent number: 4063065
    Abstract: A method for the consecutive resistance heating of sequentially advanced wire pins by means of electrodes positioned on end faces of the pins includes the following steps:A. connecting in series at least two wire pins to a current source through the electrodes;B. passing heating current through each wire pin for a number of consecutive heating periods which equal the number of the serially-connected wire pins; andC. between each heating period removing that wire pin which has been exposed to all consecutive heating periods and, in its stead, introducing a new wire pin.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: December 13, 1977
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Toni Wust
  • Patent number: 4012618
    Abstract: For the successive welding of the joints of consecutive links forming a link chain, the chain is advanced in a chain welding machine to bring a link to be welded directly below a welding position; the two links flanking the link to be welded are aligned in a common plane of alignment while a tensioning force is applied to the chain parallel to the direction of chain advance. Thereafter, the link to be welded is raised into a welding position in a plane disposed at 90.degree. to the plane of alignment. Subsequently, the link is immobilized in the welding position and its joint is welded. Upon completion of the welding step, the just-welded link is lowered from the welding position.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: March 15, 1977
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventors: Bruno Ebel, Gunter Krumholz, Paul Rahn
  • Patent number: 3961474
    Abstract: A method for producing a link chain in which some of the links have deformation characteristics differing from other links, and apparatus for producing the link chain in which stock material having the different deformation characteristics are sequentially fed to a link-forming means from flanking magazines. In a modified form means are provided for severing stock lengths from a continuous wire on either side of the link-forming means.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: June 8, 1976
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Paul Esser
  • Patent number: 3959965
    Abstract: For welding, in the course of a single pass, a link chain of indeterminate length formed of C-shaped, serially interconnected, alternating first and second links, the chain is guided, in a welding machine, through a first welding position, in the zone of which the first links have an edgewise upright orientation and the second links have a flat-lying orientation. In the first welding position the first links are welded. Then the partially welded chain is guided to and through a second welding position in such a manner that in the zone of the second welding position, the second links have an edgewise upright orientation and the first links have a flat-lying orientation. In the second welding position the welding of the chain is completed by welding the second links. Subsequent to the welding of each first or second link, the just-welded link is advanced for bringing the successive first or second link into the first or second welding position, respectively.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: June 1, 1976
    Assignee: Meyer, Roth & Pastor Maschinenfabrik GmbH
    Inventor: Toni Wust