Ralph Wheeler Goble
Engineers at Northcrest Dr, Littleton, CO

4886216, Dec 12, 1989

Mar 8, 1988

7/165499

Ralph W. Goble - Highlands Ranch CO

B02C 1900

241152R

A mill for pulverizing rock and other material. The mill includes a series of rings each having nine flat faces extending around the interior surface of the ring. The rings are arranged in a vertical column. A baffle plate possessing a central aperture is disposed between each pair of adjacent rings. A vertically extending axle extends through each of the central apertures of the baffles. A rotor is disposed between each pair of adjacent baffles and is mounted on the axle for concurrent rotation therewith. The periphery of each rotor possesses a plurality of curved blades so that when the axle is rotated, the rotor creates a suction force, which hurls the rocks forcibly toward the flat surfaces of the rings. Some of the rocks ricochet off the flat surfaces and collide into the rocks being hurled toward the flat surfaces, which collision causes the rocks to break apart. The rocks are delivered into the top of the mill, are hurled by the top-most rotor toward the faces of a ring, pass through the central aperture of the lower, adjacent baffle plate, are hurled by the next lower rotor toward the faces of the next lower ring, etc.