Patents by Inventor Philip M. Wilkinson

Philip M. Wilkinson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4726180
    Abstract: A false twist apparatus, for processing primarily fine denier yarns at low level twist levels with consistency and good process control, comprises a roller mounted for rotation about its longitudinal axis and input and output guides, to guide the yarn in a helical path around the roller, mounted on a guide support extending adjacent the roller. One of the guides is positionally adjustable on the support in a direction parallel with the roller axis to alter the helix angle of the yarn around the roller and the twist level. For S and Z twist, two drive spindles are provided symmetrically disposed on opposed sides of the support, the roller being secured on the appropriate spindle and the output guide being moved to the appropriate side of the support.
    Type: Grant
    Filed: April 9, 1987
    Date of Patent: February 23, 1988
    Assignee: Rieter Scragg
    Inventors: Geoffrey Naylor, Christopher J. Lawrence, Philip M. Wilkinson
  • Patent number: 4704858
    Abstract: Apparatus for false twisting yarns is of the type comprising three rotatable shafts, each shaft having a plurality of discs thereon. The shafts are mounted on a base member and two shafts are pivotal about axes which with the axis of the third shaft are at the apices of an equilateral triangle. The third shaft, and spindles providing pivots for the movable arms which carry the other shafts, each have a respective first drive pulley thereon and a primary drive belt passes around the three pulleys. The spindles each also have second drive pulley thereon and each movable shaft has a third drive pulley thereon, a second drive belt passing around each respective pair of second and third drive pulleys. A cam mounted on the third shaft has two like operating portions into contact with which a respective follower part of each movable shaft is biassed. Movement of the shafts may be made without alteration of the tension in, or reverse bending of, the belts.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: November 10, 1987
    Assignee: Rieter Scragg Limited
    Inventors: Geoffrey Naylor, Philip M. Wilkinson
  • Patent number: 4582269
    Abstract: A package mounting arrangement in a textile machine comprises a cradle having a U-shaped form with cradle arms extending from a spine. The cradle arms extend rearwardly of the machine from a pivot axis passing through the arms midway between the spine and package mounting means at the free ends of the arms and disposed at that side of the nip between the package and package driving bowl from which the yarn is fed to the nip in a direction rearwardly of the machine from a traverse mechanism located at the front of the machine. The arrangement provides stability of running, easy access to the package which is presented at the front of the machine for doffing, easy threading of the yarn and easy access to the traverse mechanism for maintainance. The spine forms a handle, a package mass compensating weight, traverse mechanism protection and a support for the operators hand during package doffing.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: April 15, 1986
    Assignee: Rieter-Scragg Limited
    Inventors: Anthony J. Robinson, Philip M. Wilkinson
  • Patent number: 4510744
    Abstract: For false twisting apparatus (21) of the kind comprising three rotatable parallel shafts (10,11,12) arranged at the apices of a triangle and having a plurality of parallel discs (14) on each shaft (12) inter-digitating with the discs (14) on the other two shafts (10,11), a threading device (13) is provided allowing sequential threading of a yarn into the apparatus (21). The threading device (13) comprises a body (30) on which tines (40 to 44) are slidably mounted in spaced disposition longitudinally of the body (30) and which can be pushed sequentially into the spaces between consecutive discs (14) on two stacks (10,11) as separated by the discs (14) on the other shaft (12).
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: April 16, 1985
    Assignee: Rieter-Scragg Limited
    Inventors: Christopher J. Lawrence, Philip M. Wilkinson, Colin Atkinson
  • Patent number: D770316
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: November 1, 2016
    Inventor: Philip M. Wilkinson