(under subclass 108) Subject matter having means to regulate the grid or grate or any part thereof by moving the concave closer or further away from the threshing or separating cylinders.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus,
523, for means to vary spacing between hulling surfaces; subclass 579 for apparatus which includes means for adjustment of a separating member.
241, Solid Material Comminution or Disintegration,
89.1, for apparatus in which the surface having openings, or portions thereof, is movable to change the size of the openings or its position relative to the comminuting member.
