Patents by Inventor Josef Wetzler

Josef Wetzler 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).

  • Apparatus for applying hot-melt glue to edge of sheet stack
    Patent number: 4019457
    Abstract: A stack of sheets is stood on a support surface inclined to the horizontal by 15.degree. at the upstream end of a track. A pair of elements perpendicular to this surface and mounted on a carriage clamp this stack and the carriage is displaced to the opposite end of the track. An applicator brush underneath the track in its center is rotated about an axis perpendicular to the track and parallel to the support surface. This brush is partially immersed in a hot-glue bath so that on rotation it may stroke a layer of glue on the bottom of the stack held in the clamp on the carriage.
    Type: Grant
    Filed: July 2, 1975
    Date of Patent: April 26, 1977
    Assignee: Planatolwerk Willy Hesselmann
    Inventors: Josef Wetzler, August Gaschler, Heinz Hofmann