Patents Represented by Attorney John W. Hardst

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  • Thread control mechanism for sewing machines
    Patent number: 4457247
    Abstract: A needle thread control mechanism for sewing machines which permits a machine operator to adjust the stitch tightness includes a thread take-up mechanism arranged wholly outside of the machine frame and a thread controlling mechanism arranged directly between the needle thread take-up mechanism and a thread supply source. A thread controller, adapted to cooperate with the thread take-up mechanism, is also provided.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 3, 1984
    Assignee: Union Special GmbH
    Inventors: Wolf-Rudiger von Hagen, Erwin Jurgens, Helmut Bauer