Rotary material separator having adjustable baffle means

Claim 1

A MATERIAL SIZE GRADER COMPRISING: (A) A GENERALLY HORIZONTAL CYLINDER MOUNTED FOR ROTATION ON ITS AXIS AND ADAPTED TO RECEIVE MATERIAL AT ONE END, ELEVATE A PORTION OF SAID MATERIAL BY ITS ROTARY MOVEMENT, AND DISCHARGE A PORTION OF SAID MATERIAL FROM ITS OTHER END, (B) GUIDING AND CONVEYING MEANS IN SAID CYLINDER FOR MATERIAL ELEVATED BY ROTARY MOVEMENT OF SAID CYLINDER AND COMPRISING: (1) A VIBRATORY CONVEYOR PORTION EXTENDING SUBSTANTIALLY THE LENGTH OF SAID CYLINDER AND MOUNTED THEREIN FOR VIBRATORY MOVEMENTS IN DIRECTIONS TO URGE MATERIAL THEREON TOWARD THE DISCHARGE END OF SAID CYLINDER, (2) AND A LONGITUDINALLY EXTENDING DIVIDER PORTION ADJUSTABLY MOVABLE CIRCUMFERENTIALLY OF SAID CYLINDER AND HAVING A SURFACE FOR GUIDING ELEVATED MATERIAL TOWARD SAID CONVEYOR PORTION AND A LONGITUDINAL DIVIDING EDGE RADIALLY INWARDLY SPACED FROM THE INNER SURFACE OF SAID CYLINDER AND DESCRIBING AN ARC CONCENTRIC TO SAID CYLINDER DURING CIRCUMFERENTIAL MOVEMENT OF SAID DIVIDER PORTION, (C) MEANS FOR ADJUSTABLY MOVING SAID DIVIDER PORTION SELECTIVELY IN OPPOSITE DIRECTIONS OF SAID CIRCUMFERENTIAL MOVEMENT THEREOF, (D) AND MEANS FOR IMPARTING ROTARY MOVEMENT TO SAID CYLINDER AND VIBRATORY MOVEMENTS TO SAID CONVEYOR PORTION.