DONALD P. MILLER, O.D.
Optometry at New Halls Ferry Rd, Saint Louis, MO

4002302, Jan 11, 1977

Jan 21, 1976

5/651120

Donald G. Miller - Glendale MO

American Pulverizer Company - St. Louis MO

B02C 13284

241 89

The cage of a reducing machine is positioned within the machine housing below the rotor. One end of the cage is pivoted with respect to the machine housing, while the other end is suspended from chains which pass over sprockets so that when the sprockets are rotated the cage is either elevated or permitted to descend. Should the cage fail to descend under its own weight, a downwardly directed force is applied to it by pintle-type gears which mesh with gear segments on the cage. The rotation of the gears and the movement of the chains are synchronized.

4149677, Apr 17, 1979

Nov 14, 1977

5/850944

Donald F. Graveman - St. Charles MO
Donald G. Miller - Kirkwood MO

American Pulverizer Company - St. Louis MO

B02C 1328

241189R

A ring hammer for a reducing machine includes an annular body and tooth projected radially from the annular body and arranged in two rows, with the teeth of the one row being spaced axially from the teeth of the other row and further being offset circumferentially from the teeth of the other row. A reinforcing ring extends around the annular body in the space between the two rows of teeth and is formed integral with the annular body and the teeth of the two rows. The reinforcing ring tapers downwardly to the side faces of the annular body in the spaces between successive teeth of each row so that the teeth possess greater depth at their outside faces than at their inside faces. The reinforcing ring strengthens the ring hammer and renders the teeth less susceptible to breakage.

4015783, Apr 5, 1977

Jul 10, 1975

5/594777

Donald G. Miller - Glendale MO

American Pulverizer Company - St. Louis MO

B02C 2310

241 73

In a hammer mill or crusher for use in size reduction or even pulverizing rock, metals, or other materials, a rotating crusher and a contiguous surface are confined between opposing side walls and an inlet and discharge for the mill, with each side wall having supports designed for accommodating the arcuate formation of the crushing surface; a series of reversible grate bars span the distance between the side walls and associate at each end a structural shoe designed for stably positioning of each bar into the formed surface. Each grate bar and its end shoes are contoured on their sides to provide for their mating with adjacent bars and shoes when arranged into the crusher surface.