Having Compound Motion Assistant Located Proximate To Bottom Of Receptacle And Displaceable Generally Parallel Thereto Patents (Class 414/306)
Condition responsive (Class 414/307)
Assistant separable from receptacle (Class 414/308)
Pivotably displaceable assistant and member for shielding its fixed end (Class 414/309)
Comprising screw conveyor (Class 414/310)
  • Silo dig out tool
    Patent number: 4198186
    Abstract: A portable dig out tool for removing clogged silage from the lower part of a silo after the normal unloading equipment has failed. The tool is adapted to be manually inserted and withdrawn through an access opening in the lower portion of the outer wall of the silo. An arrangement is provided for swinging rotating cutter drums to attack and remove the packed silage.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: April 15, 1980
    Assignee: Holdren Brothers, Inc.
    Inventors: John A. Holdren, Raymond S. Holdren