Method and apparatus for adding powdered material to granular material

Claim 1

APPARATUS FOR MIXING POWDERED MATERIAL WITH GRANULAR MATERIAL COMPRISING A MILL INCLUDING ROTATABLY MOUNTED ROLLERS AND SCRAPERS FOR MIXING GRANULAR MATERIAL AND AN ADDITIVE FED INTO THE MILL, A STORAGE BIN FOR GRANULAR MATERIAL POSITIONED OVER THE MILL, AN ENDLESS BELT POSITIONED BELOW THE STORAGE BIN FOR RECEIVING GRANULAR MATERIAL DISCHARGED THEREFROM ON ONE END THEREOF, A CHUTE EXTENDING BETWEN THE OTHER END OF THE ENDLESS BELT AND THE MILL INTO WHICH THE GRANULAR MATERIAL IS DEPOSITED FROM THE OTHER END OF THE ENDLESS BELT AND IN WHICH IT FALLS BY MEANS OF GRAVITY INTO THE MILL, ADDITIVE SUPPLY MEANS INCLUDING AN ADDITIVE STORAGE CHAMBER, MEANS FOR BLOWING ADDITIVE INTO THE CHAMBER, A CONDUIT EXTENDING FROM ADJACENT THE CHAMBER TO THE CENTER OF THE GRANULAR MATERIAL FALLING THROUGH THE CHUTE, AND MEANS FOR DELIVERING ADDITIVE FROM THE STORAGE CHAMBER INTO THE CONDUIT FOR EXITS FROM THE END OF THE CONDUIT WITHIN THE CHUTE SUBSTANTIALLY IN THE CENTER OF THE GRANULAR MATERIAL FALLING THROUGH SAID CHUTE.