While we have disclosed but a single embodiment of our invention, it is to be understood that we are not limited to the details thereof but may make such changes or alterations as fairly fall within the scope of the sub-joined claims. Accordingly, what we claim and desire to secure by United States Letters Patent is 1. A grinding mill comprising a base; rollers supported on said base;<a href="http://www.lightcrusher.com/solutions/frit-grinding-machine.html">frit grinding machine</a> a rotatable casing-supported on said rollers a drive shaft 'ator. may choose, and the change in pitch will carried by said casing; a movable connece spherical ball and thrust bearing carried by said shaft.The construction defined in claim 1 in which said last means comprises bearings for said rollers and means for adjusting said bearin s relative to each other.
T e constructure defined in claim 1 in which said driving means comprises a worm gear secured to said shaft; a Worm meshing with said gear; said Worm and worm gear being adjustable as a unit.A grinding mill comprising a foundation;<a href="http://www.lightcrusher.com/solutions/copper-ore-beneficiation-plant.html">copper ore beneficiation plant</a>; substantially parallel inclined seats on 7 said foundation; adjustable rollers supported on one of said seats; a spherical socket on the other of said seats; a cylindrical casin rotatably supported on said rollers; a drive shaft supported by said casing; a ball and thrust bearing for said drive shaft; said bearing provided with a spherical surface for o erative engagement with said socket; and riving means co-operating with said shaft.
In the construction defined in claim 5, a slotted plate carried by said one of said seats; bearings supported on said plate; shafts rotatably supported in said bearings, said rollers bein secured upon said shafts; and means for a justing said bearings relative to said plate. The construction defined in claim 5 in which saiddriving means are movably supported by said foundation.A grinding mill comprising a foundation; a cylindrical inclined rotatable casin supported by saidfoundation .a drive sha carried by said casing; a ball and socket joint between said shaft and said foundation; a worm gear fixed to said shaft a worm meshing With said gear; a casing surrounding said gear and said worm; means for altering the inclination of said casing; and means whereb said casing surrounding said gear and sai worm moves commensurate with any such change in inclination.