Patents by Inventor Thaddeus J. Zylbert

Thaddeus J. Zylbert 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).

  • Composite feed dog for a sewing machine
    Patent number: 4730567
    Abstract: A composite feed dog for a sewing machine comprises a zinc die cast body portion having a toothed surface region covered by a layer of elastomeric material.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: March 15, 1988
    Assignee: SSMC Inc.
    Inventors: William M. Block, William J. Edwards, Charles R. Odermann, Thaddeus J. Zylbert
  • Method for pressing finless sewing machine needles
    Patent number: 4598753
    Abstract: A method is disclosed for finlessly pressing sewing machine needles without compromising any predetermined final needle configuration by operating on the needle blank prior to any deformation by pressing step to form in the blank a varying cross-sectional area along its length matching the finished needle cross-sectional area.
    Type: Grant
    Filed: October 9, 1984
    Date of Patent: July 8, 1986
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Thread guide construction
    Patent number: 4559886
    Abstract: A sewing machine thread guide is provided with a flexible plastic thread entrapping core portion, and a hard core encasing portion having thread supporting grooves in alignment with thread receiving eyelets in the core portion.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: December 24, 1985
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Needle thread tensioning device for a sewing machine
    Patent number: 4520743
    Abstract: Opposing plates of a thread tensioning device for use on a lock stitch sewing machine in a thread handling system wherein needle thread is caused to pass between elongate members of a thread holder which meters thread to the looptaker of the machine are formed with recesses through which the thread can fall without restraint to supply thread to the looptaker during the movement thereof from a loop seizing to a cast-off position.
    Type: Grant
    Filed: August 3, 1984
    Date of Patent: June 4, 1985
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Sewing needle with two portion shank
    Patent number: 4519330
    Abstract: A needle for use in a sewing machine having a one-way needle clamp, in which the needle is formed with a shank having a minor portion adjacent the free extremity which cooperates with the one-way needle clamp to properly orient the sewing needle, and a major portion extending between the minor portion and the blade which includes a reference surface for locating the blade with respect to the sewing machine looptaker.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: May 28, 1985
    Assignee: The Singer Company
    Inventors: Thaddeus J. Zylbert, Wolf-Dieter Fuhrmann, Hans Hammer, Fritz Kappertz
  • Buttonhole foot and shank assembly
    Patent number: 4494471
    Abstract: A presser foot with a grooved sole plate for use in the formation of buttonholes on a sewing machine is pivotally mounted on a screw with which the foot can be moved laterally relative to the shank to position a groove dividing ridge with respect to a sewing needle.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: January 22, 1985
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Replaceable hook point and needle guard for sewing machine loop taker
    Patent number: 4488499
    Abstract: A sewing machine loop taker is disclosed having a replaceable adjustable hook beak and needle guard fabricated as a integral element in which the dimensional relationships established in fabrication are not influenced by the means for securing or the provisions for adjustment of the element relatively to the loop taker.
    Type: Grant
    Filed: December 2, 1981
    Date of Patent: December 18, 1984
    Assignee: The Singer Company
    Inventors: Anthony Giaimo, Thaddeus J. Zylbert
  • Gear attaching arrangement for looptaker drive shaft
    Patent number: 4475475
    Abstract: A hollow looptaker shaft which has a spindle rotatable therein and which is of a material susceptible to local deformation under pressure is fitted with a steel sleeve that is prevented from rotating relative to the shaft, and a gear for use in rotating the shaft is affixed to the sleeve with a set screw.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: October 9, 1984
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert
  • Sewing machine bobbin for a vertical axis hook
    Patent number: 4442785
    Abstract: A sewing machine bobbin for a vertical axis hook is provided with a top and a bottom flanged section, and a fastener which both holds the sections together and is the driven member of a clutch through which the bobbin may be driven for bobbin winding.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: April 17, 1984
    Assignee: The Singer Company
    Inventors: Charles R. Odermann, Thaddeus J. Zylbert
  • Resilient bobbin thread pull-off member for lockstitch sewing machine
    Patent number: 4399761
    Abstract: A lockstitch sewing machine is provided with an elongate resilient member which is affixed at one end in the machine and extends under the feed dog of the machine for engagement thereby. The resilient member is flexed by the feed dog during downward movement thereof and then acts against bobbin thread pulling it from the bobbin spool. The elongate member relaxes and separates from the bobbin thread during upward movement of the feed dog.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: August 23, 1983
    Assignee: The Singer Company
    Inventors: Gerald J. Creed, Thaddeus J. Zylbert
  • Thread controlling arrangement for bobbin winding mechanism
    Patent number: 4397250
    Abstract: A sewing machine bobbin case is provided with a thread tensioning device that includes a pivotally movable arm which is spring biased into a position preventing thread from entering the device during the sewing of materials on the machine, but which is disposable by a finger in a position providing for the introduction of thread into the device in preparation for the performance of a bobbin winding operation.
    Type: Grant
    Filed: August 20, 1981
    Date of Patent: August 9, 1983
    Assignee: The Singer Company
    Inventors: Thaddeus J. Zylbert, Herbert T. Hurler
  • In-place bobbin winding mechanism for a sewing machine
    Patent number: 4326474
    Abstract: A bobbin resting on a bobbin case in the vertical axis looptaker of a sewing machine is provided with a slidable plunger which is biased into a position wherein the bobbin is disconnected from the looptaker and can rotate relative thereto. The plunger is depressable to a cam on the plate into a position wherein it is effective to cause the bobbin to be rotated with the looptaker for the winding of thread.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: April 27, 1982
    Assignee: The Singer Company
    Inventor: Thaddeus J. Zylbert