Rotary dryer operation under emergency conditions

Claim 1

IN AN APPARATUS FOR DRYING MOIST, GRANULAR MATERIAL HAVING A ROTATABLE, HORIZONTALLY DISPOSED, TUBULAR SHELL, AND HEAT RESISTANT WALLS PARTIALLY ENCLOSING SAID TUBULAR SHELL, MEANS FOR SUPPLYING HEAT TO SAID TUBULAR SHELL, MEANS FOR INTRODUCING MOIST GRANULAR MATERIAL INTO THE INLET END THEREOF, THE IMPROVEMENT COMPRISING A REVERSIBLE MOTOR OPERATIVELY CONNECTED WITH SAID SHELL FOR ROTATING SAME, MEANS FOR CONVEYING DRIED MATERIAL FROM THE OUTLET END OF SAID SHELL, DISCHARGE MEANS EXTENDING FROM WITHIN SAID SHELL THROUGH THE OUTLET END THEREOF TO SAID MEANS FOR CONVEYING, THE END OF SAID DISCHARGE MEANS IN SAID SHELL HAVING A DRIED MATERIAL INLET OPENING ONLY FACING THE NORMAL DIRECTION OF ROTATION OF SAID SHELL FOR INLET OF DRIED MATERIAL INTO SAID DISCHARGE MEANS, MEANS CONNECTED WITH SAID CONVEYING MEANS AND SAID REVERSIBLE MOTOR FOR REVERSING SAID MOTOR IN RESPONSE TO FAILURE OF SAID CONVEYING MEANS THEREBY REVERSING ROTATION OF SAID TUBULAR SHELL AND TERMINATING ENTRY OF DRIED MATERIAL INTO SAID OPENING OF SAID DISCHARGE MEANS.