Troughing roller assembly

Claim 1

A TROUGHING ROLLER ASSEMBLY COMPRISING: A SUPPORTING SHAFT; MEANS FOR SUPPORING THE ENDS OF THE SHAFT AND HOLDING IT AGAINST ROTATION; AN INNER CENTER ROLLER COAXIAL WITH THE SHAFT AND HAVING A CYLINDRICAL SURFACE ADAPTED TO CARRY THE CENTER PORTION OF A CONVEYOR BELT; ANTI-FRICTION MEANS BETWEN THE SHAFT AND CENTER ROLLER ENABLING THE ROLLER TO ROTATE AROUND THE SHAFT; A PAIR OF WING ROLLERS COAXIAL WITH AND SPACED APART ALONG THE CENTER ROLLER AND MEANS ROTATABLY MOUNTING A WING ROLLER ON EACH END OF SAID CENTER ROLLER, SAID MOUNTING MEANS COMPRISING A SPLIT SLEEVE MOUNTED ON THE CENTER ROLLER, MEANS FOR CONTRACTING THE SLEEVE TO FRICTIONALLY GRIP SAID CENTER ROLLER, AND MEANS FOR RETAINING THE WING ROLLERS ON THEIR RESPECTIVE SPLIT SLEEVE EACH WING ROLLER HAVING A GENERALLY CONICAL SURFACE ADAPTED TO CARRY A RESPECTIVE SIDE PORTION OF A CONVEYOR BELT, THE WING ROLLERS BEING OPPOSITELY DISPOSED WITH THEIR LARGER DIAMETER ENDS FACING OUTWARDLY TO PROVIDE A TROUGHED CONTOUR TO A BELT SUPPORT THEREON; AND ANTI-FRICTION MEANS BETWEEN THE CENTER ROLLER AND EACH WING ROLLER ENABLING EACH WING ROLLER TO ROTATE AROUND THE CENTER ROLLER IN THE SAME DIRECTION AS THE CENTER ROLLER BUT AT A DIFFERENT RATE AND INDEPENDENTLY OF THE ROTATION OF THE CENTER ROLLER.