Patents by Inventor Fritz Wittler

Fritz Wittler 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: 4545717
    Abstract: A charging machine for charging a glass melting tank furnace includes a reciprocatable charging table above which a hopper is provided for the batch, at the rear side of which at least one movable scraper is provided which seals the slot between the rear wall of the batch hopper and the top surface of the loading table. In order to eliminate the wear on the lower edge of the movable scraper and the surface of the charging table which comes into engagement with the movable scraper, the movable scraper is connected to stroke elements for lifting and lowering, whose stroke is controlled in dependency on the movements of the loading table in such a manner that the movable scraper is lifted during the forward movement of the charging table and is lowered during the return movement of the charging table. In this charging machine, wear occurs only during the table return movement, but not during the table forward movement, so that the wear is cut in half, thus doubling the service life of the machine.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: October 8, 1985
    Assignee: Zimmermann & Jansen GmbH
    Inventors: Fritz Wittler, Michael Fraikin
  • Patent number: 4252039
    Abstract: A silent feeder for revolving bar stock has a horizontal elongated feed bed with a beam supported by plural columns. Spaced adjustable holders are mounted on the feed bed at opposite sides of the stock, and each holder has a plurality of rollers bearing on the circumference of the bar stock, the rollers being preferably resiliently loaded radially of the bar stock.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: February 24, 1981
    Assignee: Apparatebau Spradow G.m.b.H.
    Inventors: Fritz Wittler, Reinhard Bollman