murry

Claim 1

A METHOD OF CLASSIFYING COAL COMPRISIG INTRODUCING SAND IN THE TOP OF A COAL CLASSIFYING COMPARTMENT, PASSING A BODY OF WATER UPWARDLY AND ACROSS THE TOP OF THE COMPARTMENT THEN OVER AN OUTLET WEIR, REGULATING THE VOLUME OF SAND AND THE UPEARD VELOCITY AND VOLUME OF WATER BEING CIRCULATED TO KEEP THE SAND SUSPENDED IN WATER AND TO MAINTAIN A SAND-WATER FLOAT MIXTURE ZONE IN THE TOP OF THE COMPARTMENT HAVING A SPECIFIC GRAVITY ADAPTED TO FLOAT THE DESIRED COAL, INTRODUCING GRANULAR COAL TO BE CLASSIFIED IN TO THE SANDWATER FLOAT MEDIUM AT THE TOP OF THE COMPARTMENT, MAINTAINING A SAND-WATER MIXTURE OF DOWNWARDLY DECREASEING SPECIFIC GRAVITY BELOW THE COAL FLOATING ZONE OF THE COMPARTMENT OF FACILITATE THE SEPARATION OF HEAVY SINK MATERIAL, PERMITTING HEAVY REFUSE TO SINK THROUGH THE COMPARTMENT, SCREENING THE SINKING REFUSE TO CATCH THE COARSE MATERIAL AND CARRYING IT OUT OF A MID-PORTION OF THE COMPARTMENT WHILE ALLOWING FINE HEAVY SINKING REFUSE TO PASS THROUGH THE SCREEN, WITHDRAWING FINE REFUSE FROM THE BOTTOM OF THE COMPARTMENT, CARRYING THE FLOAT COAL WITH THE FLOAT MIXTURE IN A CONFINED STREAM UP AN INCLINED PERFORATED BASE WITH INCREASED VELOCITY TO AND OVER THE OUTLET WEIR BY INTRODUCING WATER AT THE BOTTOM OF THE STREAM THROUGH THE BASE TO KEEP THE WATER, SAND AND COAL MIXTURE MOBILE AND PREVENT SAND FROM SETTLING ON THE BASE.

Claim 2

A METHOD OF CLASSIFYING COAL COMPRISIG INTRODUCING SAND IN THE TOP OF A COAL CLASSIFYING COMPARTMENT, PASSING A BODY OF WATER UPWARDLY AND ACROSS THE TOP OF THE COMPARTMENT THEN OVER AN OUTLET WEIR, REGULATING THE VOLUME OF SAND AND THE UPEARD VELOCITY AND VOLUME OF WATER BEING CIRCULATED TO KEEP THE SAND SUSPENDED IN WATER AND TO MAINTAIN A SAND-WATER FLOAT MIXTURE ZONE IN THE TOP OF THE COMPARTMENT HAVING A SPECIFIC GRAVITY ADAPTED TO FLOAT THE DESIRED COAL, INTRODUCING GRANULAR COAL TO BE CLASSIFIED IN TO THE SANDWATER FLOAT MEDIUM AT THE TOP OF THE COMPARTMENT, MAINTAINING A SAND-WATER MIXTURE OF DOWNWARDLY DECREASEING SPECIFIC GRAVITY BELOW THE COAL FLOATING ZONE OF THE COMPARTMENT OF FACILITATE THE SEPARATION OF HEAVY SINK MATERIAL, PERMITTING HEAVY REFUSE TO SINK THROUGH THE COMPARTMENT, SCREENING THE SINKING REFUSE TO CATCH THE COARSE MATERIAL AND CARRYING IT OUT OF A MID-PORTION OF THE COMPARTMENT WHILE ALLOWING FINE HEAVY SINKING REFUSE TO PASS THROUGH THE SCREEN, WITHDRAWING FINE REFUSE FROM THE BOTTOM OF THE COMPARTMENT, CARRYING THE FLOAT COAL WITH THE FLOAT MIXTURE IN A CONFINED STREAM UP AN INCLINED PERFORATED BASE WITH INCREASED VELOCITY TO AND OVER THE OUTLET WEIR BY INTRODUCING WATER AT THE BOTTOM OF THE STREAM THROUGH THE BASE TO KEEP THE WATER, SAND AND COAL MIXTURE MOBILE AND PREVENT SAND FROM SETTLING ON THE BASE.