Patents by Inventor Ralph W. List

Ralph W. List 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: 4103835
    Abstract: Textile strands are transferred from a full package to an empty bobbin spaced endwise therefrom, by delaying traverse of the winding strand and by picking up the strand and forming a resulting transfer tail on the end of the empty bobbin.The pickup step utilizes rotary bristles located at the spaced adjacent ends of spindles for the respective packages.The transfer delay step may utilize a bistable inertial device positioned to intercept the transferring strand, and functioning to release the strand after a momentary delay, after which delay the strand is wound onto the empty bobbin to begin the formation of a package.The inertial device has adjustable ears and includes variable weights serving to vary the timing delay, whereby the length and position of the transfer tail may be controlled and adjusted.
    Type: Grant
    Filed: August 31, 1976
    Date of Patent: August 1, 1978
    Assignee: Techniservice Division, Textured Yarn Co., Inc.
    Inventor: Ralph W. List
  • Patent number: 4008859
    Abstract: Package winding of textile strands uninterrupted by transfer from a full to an empty package is accomplished by delaying lateral transfer of the winding strand from a full to an empty package and by picking up a resulting transfer tail of the laterally transferring strand adjacent the end of the empty package. The transfer delay step utilizes a bistable inertial device located to intercept the laterally transferring strand and to be repositioned thereby and to release the strand after momentary inertia-induced delay during which the strand begins to wind onto the empty package. The pickup step utilizes rotary devices located at the spaced adjacent ends of spindles for the respective packages, such device on the spindle of the package to which the strand is transferring being adapted to engage and grip it. The strand is broken or otherwise severed between the pickup device and the full package, thereby enabling the strand to be traversed onto the empty package.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: February 22, 1977
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Robert K. Stanley
  • Patent number: 3994444
    Abstract: Package winding of textile strands uninterrupted by transfer from a full to an empty package is accomplished by delaying lateral transfer of the winding strand from a full to an empty package and by picking up a resulting transfer tail of the laterally transferring strand adjacent the end of the empty package. The transfer delay step utilizes a bistable inertial device located to intercept the laterally transferring strand and to be repositioned thereby and to release the strand after momentary inertia-induced delay during which the strand begins to wind onto the empty package. The pickup step utilizes rotary devices located at the spaced adjacent ends of spindles for the respective packages, such device on the spindle of the package to which the strand is transferring being adapted to engage and grip it. The strand is broken or otherwise severed between the pickup device and the full package, thereby enabling the strand to be traversed onto the empty package.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: November 30, 1976
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Robert K. Stanley
  • Patent number: 3952933
    Abstract: Conveyor apparatus for temporary holdup of textile strands, especially crimped strands for setting. Screenlike conveyor belts receive the strand between downwardly converging flights and discharge the strand from between upwardly diverging flights. The conveyor apparatus is housed in a heated steam-fed enclosure.
    Type: Grant
    Filed: April 18, 1974
    Date of Patent: April 27, 1976
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Malcolm F. Irwin, Robert K. Stanley
  • Patent number: 3949453
    Abstract: Conveyor apparatus for temporary holdup of textile strands, especially crimped strands for setting. Screenlike conveyor belts receive the strand between downwardly converging flights and discharge the strand from between upwardly diverging flights. The conveyor apparatus is housed in a heated steam-fed enclosure.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: April 13, 1976
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Malcolm F. Irwin, Robert K. Stanley
  • Patent number: 3936918
    Abstract: Conveyor apparatus for temporary holdup of textile strands, especially crimped strands for setting. Screenlike conveyor belts receive the strand between downwardly converging flights and discharge the strand from between upwardly diverging flights. The conveyor apparatus is housed in a heated steam-fed enclosure.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: February 10, 1976
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Malcolm F. Irwin, Robert K. Stanley
  • Patent number: 3936006
    Abstract: Package winding of textile strands uninterrupted by transfer from a full to an empty package is accomplished by delaying lateral transfer of the winding strand from a full to an empty package and by picking up a resulting transfer tail of the laterally transferring strand adjacent the end of the empty package. The transfer delay step utilizes a bistable inertial device located to intercept the laterally transferring strand and to be repositioned thereby and to release the strand after momentary inertia-induced delay during which the strand begins to wind onto the empty package. The pickup step utilizes rotary devices located at the spaced adjacent ends of spindles for the respective packages, such device on the spindle of the package to which the strand is transferring being adapted to engage and grip it. The strand is broken or otherwise severed between the pickup device and the full package, thereby enabling the strand to be traversed onto the empty package.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: February 3, 1976
    Assignee: Textured Yarn Co., Inc.
    Inventors: Ralph W. List, Robert K. Stanley