Mixing apparatus for fluent material

Claim 1

MIXING APPARATUS FOR FLUENT MATERIAL, SAID APPARATUS COMPRISING AN ELONGATED TANK HAVING END WALLS, SIDEWALLS AND A BOTTOM WALL, SAID BOTTOM WALL AND ADJACENT SIDEWALLS PROVIDING A TROUGH, A HORIZONTAL SCREW CONVEYOR DISPOSED IN SAID TROUGH, THE VANE ON ONE END OF SAID CONVEYOR TERMINATING AT AN INTERMEDIATE POINT IN SAID TANK FOR FEEDING MATERIAL THERETO, THE VANE ON THE OTHER END OF SAID CONVEYOR EXTENDING FROM SAID INTERMEDIATE POINT TOWARD THE ADJACENT END WALL AND HAVING A TWIST OPPOSITE TO THAT ON SAID ONE END TO CONVEY MATERIAL FROM SAID ADJACENT END WALL TOWARD SAID INTERMEDIATE POINT, A VERTICALLY EXTENDING SPIRAL CONVEYOR AT SAID INTERMEDIATE POINT DISPOSED ON ONE SIDE OF SAID HORIZONTAL CONVEYOR FOR CONVEYING MATERIAL UPWARDLY, A DISCHARGE CHUTE IN SAID TANK AT SAID INTERMEDIATE POINT ON THE OPPOSITE SIDE OF SAID HORIZONTAL CONVEYOR FROM SAID VERTICAL CONVEYOR, A SLIDE IN SAID CHUTE FOR CLOSING THE SAME, A SECOND VERTICALLY EXTENDING SPIRAL CONVEYOR AT SAID INTERMEDIATE POINT DISPOSED DIRECTLY ABOVE AND IN AXIAL ALIGNMENT WITH SAID CHUTE ON THE OPPOSITE SIDE OF SAID HORIZONTAL CONVEYOR FROM SAID FIRST VERTICAL CONVEYOR FOR CONVEYING MATERIAL UPWARDLY, THE LOWER END OF SAID SECOND VERTICAL CONVEYOR TERMINATING ADJACENT THE UPPER SURFACE OF SAID SLIDE TO REDUCE THE DEAD WEIGHT LOAD OF FLUENT MATERIAL ON SAID SLIDE AND MEANS TO DRIVE SAID CONVEYORS.