Quick change roller die assembly

Claim 1

A PELLET MILL FOR USE IN THE PREPARATION OF FEED FOR LIVE STOCK COMPRISING A HOUSING HAVING A FRONT WALL, A REAR WALL, AND A HOLLOW BRACKET POSITIONED EXTERNALLY OF THE REAR WALL, SAID BRACKET HAVING A WALL PORTION SUBSTANTIALLY PARALLEL TO SAID REAR WALL, A FIRST SLEEVE EXTENDING HORIZONTALLY BETWEEN OPENINGS THEREFOR IN THE FRONT AND REAR WALLS, THE REARWARD END OF SAID FIRST SLEEVE EXTENDING REARWARDLY BEYOND SAID REAR WALL, SAID FIRST SLEEVE BEING JOURNALED IN BEARINGS THEREFOR IN THE FRONT AND REAR WALLS AND HAVING DRIVE MEANS THEREON WHEREBY IT IS ADAPTED TO BE ROTATED ABOUT ITS AXIS, A SECOND SLEEVE OF RELATIVELY SMALLER DIAMETER REMOVABLY INSERTED IN SAID FIRST SLEEVE FROM ITS FORWARD END AND ROTATABLE THEREWITH, SAID SECOND SLEEVE HAVING AN ENLARGED, CYLINDRICAL FORWARD END PORTION POSITIONED EXTERNALLY OF THE HOUSING AND HAVING EXTRUSION DIES IN THE PERIPHERAL WALL THEREOF, SAID SECOND SLEEVE HAVING A CYLINDRICAL REARWARD END PORTION AND A LONG TAPERED FORWARD END PORTION FOR ENGAGEMENT WITH CORRESPONDINGLY SHAPED INNER SURFACES OF SAID FIRST SLEEVE WHEREBY SAID FIRST AND SECOND SLEEVES ARE POSITIVELY ALIGNED CONCENTRICALLY AND COAXIALLY, A FIXED SHAFT OF RELATIVELY SMALLER DIAMETER ARRANGED CONCENTRICALLY AND COAXIALLY WITHIN SAID SECOND SLEEVE AND EXTENDING BEYOND OPPOSITE ENDS THEREOF, A PAIR OF DIAMETRICALLY OPPOSED ROLLERS JOURNALED ON STUB AXLES HAVING MEANS CONNECTING THEM TO THE FORWARD END OF SAID SHAFT, ECCENTRICALLY THEREOF, WHEREBY SAID ROLLERS ARE POSITIONED IN OPPOSING RELATION TO SAID DIES, SAID SHAFT HAVING ITS FORWARD END PORTION JOURNALED IN BEARINGS THEREFOR IN THE FORWARD END PORTION OF SAID SECOND SLEEVE WHEREBY SAID FIRST AND SECOND SLEEVES ARE MOVABLE ROTATIVELY ABOUT SAID SHAFT, SAID SHAFT EXTENDING REARWARDLY OF SAID SECOND SLEEVE AND HAVING A TAPERED REARWARD END PORTION WHICH IS PASSED THROUGH AN OPENING THEREFOR IN A SUPPORTING BLOCK CONNECTED BY SHEAR PINS TO SAID WALL PORTION OF SAID BRACKET, SAID TAPERED REARWARD END PORTION BEING SECURED AGAINST ROTATION RELATIVE TO SAID SUPPORTING BLOCK AND HAVING A NUT THREADED ON ITS EXTREME END REARWARDLY OF SAID TAPERED REARWARD END PORTION WHEREBY SAID SHAFT IS REMOVABLY SECURED IN SAID HOUSING, A THIRD SLEEVE OF RELATIVELY SMALLER DIAMETER THAN SAID SECOND SLEEVE LOOSELY SURROUNDING SAID SHAFT AND POSITIONED REARWARDLY OF SAID FIRST AND SECOND SLEEVES, SAID THIRD SLEEVE HAVING AN INTERNALLY ENLARGED REARWARD END PORTION RECEIVED ON A CYLINDRICAL BOSS ON SAID SUPPORTING BLOCK AND HAVING AN EXTERNALLY THREADED FORWARD END PORTION IN THREADED ENGAGEMENT WITH AN INTERNALLY THREADED REARWARD END PORTION OF SAID SECOND SLEEVE WHEREBY SAID SECOND SLEEVE IS REMOVABLY SECURED IN SAID FIRST SLEEVE AND IS POSITIVELY DISPLACED AXIALLY RELATIVE THERETO UPON TURNING SAID THIRD SLEEVE, AND AN EXTERNAL ENLARGEMENT ON SAID THIRD SLEEVE INTERMEDIATE ITS ENDS HAVING MEANS THEREON FOR TURNING SAID THIRD SLEEVE.