Coarse screening dry particulate materials

Claim 1

A GRIZZLY BAR SCREEN ADAPTED TO BE MOUNTED ON THE DISCHARGE END OF A ROTARY DRYER FOR ROTATION THEREWITH COMPRISING A SERIES OF GENERALLY ANNULAR GRIZZLY BAR MEMBERS, MEANS INTERCONNECTING SAID MEMBERS INTO A GENERALLY CYLINDRICAL ASSEMBLY WITH THE CENTERS OF CURVATURE OF SAID ANNULAR MEMBERS COINCIDING WITH THE AXIS OF SAID CYLINDRICAL ASSEMBLY AND SAID MEMBERS PARALLEL TO ONE ANOTHER TO PROVIDE SPACES BETWEEN ADJACENT MEMBERS FOR PASSAGE OF SMALLER MATERIAL PARTICLES RADIALLY OUTWARDLY THROUGH SAID SPACES WHILE LARGER MATERIAL PARTICLES AND LUMPS ARE RETAINED ON THE RADIALLY INNER EDGES OF SAID MEMBERS, A PLURALITY OF LIFTER ELEMENTS SECURED AT CIRCUMFERENTIALLY SPACED POSITIONS TO EXTEND GENERALLY TRANSVERSELY OF SAID RADIALLY INNER EDGES OF THE MEMBERS IN SAID ASSEMBY AND DIAGONALLY RELATIVE TO THE PLANES OF THE PARALLEL GRIZZLY BAR MEMBERS, MEANS AT ONE END OF SAID ASSEMBLY FOR CONNECTING SAID SCREEN TO THE DISCHARGE END OF A ROTARY DRYER, AND OUTLET MEANS AT THE OPPOSITE END OF SAID ASSEMBLY FOR DISCHARGE OF SAID LARGER MATERIAL PARTICLES AND LUMPS FROM SAID RADIALLY INNER EDGES OF SAID MEMBERS.