Blending and mixing apparatus

Claim 1

A MACHINE FOR MIXING PARTICULATE MATERIALS COMPRISING A DRUM MOUNTED TO REVOLVE ABOUT A SUBSTANTIALLY HORIZONTAL AXIS AND HAVING A TUBULAR WALL AND A REAR END WALL AT ONE AXIAL END OF THE DRUM, A FIXED HOOD ENCLOSING THE OPPOSITE END OF THE DRUM, SAID HOOD HAVING A TUBULAR WALL THAT IS OF A SUBSTANTIALLY LARGER DIAMETER THAT THE DRUM TUBULAR WALL, AN END WALL WITH AN INLET PORT AND A DISCHARGE PORT AT A HIGHER ELEVATION THAT SAID INLET PORT, A CHUTE ATTACHED TO THE END WALL FOR DIRECTING MATERIAL INTO THE INLET PORT, DISCHARGE MEANS ATTACHED TO THE HOOD END WALL FOR SELECTIVELY DISCHARGING MATERIAL THROUGH THE DISCHARGE PORT, SAID DISCHARGE MEANS INCLUDING MEANS MOVABLE BETWEEN TWO POSITIONS FOR SELECTIVAELY PERMITTING DISCHARGE OF MATERIAL FROM THE DRUM AND BLOCKING DISCHARGE FROM THE DRUM, TRANSFER MEANS IN PART JOINED TO SAID OPPOSITE END OF THE DRUM TO ROTATE THEREWITH AND EXTENDING AXIALLY WITHIN THE CONFINES OF THE HOOD TUBULAR WALL FOR TRANSFERRING MATERIAL PASSED THROUGH THE HOOD INLET PORT INTO THE HOOD INTO THE CONFINES OF THE DRUM AND RETAINING THE MATERIAL IN THE DRUM AS LONG AS THE SAID MOVEABLE MEANS IS IN A BLOCKING POSITION, SAID TRANSFER MEANS INCLUDING A PLURALITY OF CIRCUMFERENTIALLY SPACED SCOOPS EACH HAVING A MOVABLE CLOSURE AND MEANS COOPERATING