Patents by Inventor Walter Ellingham

Walter Ellingham 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: 4057346
    Abstract: An automatic machine and method for transporting and printing a film track of individual film negatives and corresponding perforated holes, having the film track on a take-up reel and supply reel extending therebetween to a printer, the latter including a light source lens and a screen for printing film on a printing stock, and a bezzle plate having an opening substantially equal in size to that of a negative. A photoelectric device mounted on a yoke for detecting a perforated hole in the film. A control device for stopping the feed of the film track in response to the detection of the perforated hole, and actuating a printer print cycle substantially simultaneously therewith, and subsequently automatically feeding the film track again.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: November 8, 1977
    Inventors: Walter Ellingham, Edward J. Nolan