Patents by Inventor Virgil T. Butrum

Virgil T. Butrum 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: 4491475
    Abstract: A method of charging relatively large briquettes of metal scrap to a melting system at a substantially constant feed rate is disclosed. The method comprises providing a pumping bay, a charging and melting bay, and a molten metal furnace from which molten metal is recirculated from the furnace through the pumping bay to the charging and melting bay. The briquettes are transferred onto a first conveyor adapted to store and convey a controlled weight of briquettes to a second conveyor. The briquettes are conveyed from the first conveyor to a second conveyor mounted on load cells which intermittently stops the first conveyor to maintain a controlled weight in the second conveyor. The briquettes are transferred from the second conveyor to a third conveyor where they are aligned and accumulated. The briquettes are then discharged individually at a substantially constant rate into the melting bay.
    Type: Grant
    Filed: February 8, 1984
    Date of Patent: January 1, 1985
    Assignee: Aluminum Company of America
    Inventors: Chester L. Zuber, Virgil T. Butrum, Jeffrey B. Gorss, Manford E. Rydholm