Patents by Inventor Norman Isaac Webb Walker

Norman Isaac Webb Walker 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).

  • Processes and apparatus for feeding material to a glass melting tank
    Patent number: 3938976
    Abstract: Apparatus for feeding material to a glass melting tank comprises a batch material feed system and a cullet feed system. A first control unit controls the rate of the batch feed and a second control unit controls the cullet feed rate. One of the control units receives a signal dependant on the glass level in the tank and thereby controls the rate of one feed system in dependance on the glass level. A ratio control unit is provided to adjust the other control unit so the two feed systems operate at a predetermined ratio of feed rates.
    Type: Grant
    Filed: December 27, 1973
    Date of Patent: February 17, 1976
    Assignee: Pilkington Brothers Limited
    Inventor: Norman Isaac Webb Walker