Patents by Inventor Alfred R. Mack

Alfred R. Mack 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).

  • Feed regulating mechanism for a sewing machine
    Patent number: 4145983
    Abstract: A modular feed regulating stitch length and reverse feed selector, and a modular assembly including feed regulating control linkages and a plastic support therefor are provided for use in a sewing machine. Each module is readily assembled apart from the machine and may thereafter be affixed for cooperative interrelationship in the machine bed.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: March 27, 1979
    Assignee: The Singer Company
    Inventors: Joseph P. Law, Alfred R. Mack
  • Arm top cover hinge for sewing machines
    Patent number: 4129922
    Abstract: A hinge for the lid contained on the arm top cover of a sewing machine which comprises a pair of cam shaped pivot pins molded into the arm top cover and a pair of saddles molded into the lid and adapted to receive the pivot pins. A plastic spring havng a pivot pin embracing tab at each end is removably fastened to the lid. The plastic spring imparts a "snapping" action to restrain the lid in an open or closed position.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: December 19, 1978
    Assignee: The Singer Company
    Inventors: Joseph P. Law, Alfred R. Mack