Patents by Inventor Ernest C. Hawkins

Ernest C. Hawkins 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: 3969965
    Abstract: A multiple mold forming machine includes a L-shaped vertical bed having a headstock positioned at one end in which are provided a plurality of rotatable spindles. The spindles rotatably support a plurality of mold blanks and a single master mold. At the opposite end of the bed positioned for longitudinal movement on a beam member secured to the bed is a carriage. The carriage is slidably mounted to the bed and is advanced toward and away from the spindles by operation of a ball screw assembly secured to the bottom of the carriage. A plurality of tool assemblies together with a tracing assembly are rigidly mounted on a cross slide which is arranged to move transversely relative to the longitudinal axis of the bed. Each tool assembly includes a cutting element having a longitudinal axis aligned in co-planar relationship with the axis of rotation of a corresponding mold blank positioned on a spindle in the headstock.
    Type: Grant
    Filed: January 29, 1974
    Date of Patent: July 20, 1976
    Assignee: Gateway Machine & Design, Inc.
    Inventor: Ernest C. Hawkins