Rotary cylinder construction of removable shell type

Claim 1

A HEAVY DUTY CYLINDER FOR ROTARY MATERIAL PROCESSING MACHINES COMPRISING SUPPORTING MEANS PROVIDING JOURNALS AT OPPOSITE ENDS OF THE CYLINDER FOR ROTATION IN FRAME MEMBER OF THE MACHINE, AT LEAST ONE CYLINDRICAL BODY THE OUTER SURFACE OF WHICH CONSTITUES A WORKING SURFACE OF THE CYLINDER, SAID BOPDY HAVING ABUTMENT SURFACES THEREON AT ITS OPPOSITE ENDS AND FURTHER HAVING CENTERING SURFACES ADJACENT SAID ENDS IN FIXED RELATION TO SAID OUTER SURFACE, BODY CLAMPING HEADS ON SAID SUPPORTING MEANS AT THE OPPOSITE ENDS OF SAID BODY TO COAT WITH SAID ABUTMENT SURFACES, MEANS CARRIED BY SAID SUPPORTING MEAN FOR CONVERGING SAID HEADS AND CLAMPING THEM AGAINST SAID ABUTMENT SURFACES TO HOLD SAID BODY SECURELY AGAINST DISPLACEMENT BY WORKING LOADS, AND BODY CENTERING MEANS CONVERGED WITH SAID HEADS AND PRESENTING POSITIONING SURFACES NORMALLY IN FIXED POSITIONS RADIALLY OF THE AXES OF SAID JOURNALS, SAID POSITIONING SURFACES BEING DISPOSED TO MATE WITH AND POSITION SAID CENTERING SURFACES UPON A CONVERGENCE OF SAID CENTERING SUFACES UPON A CONVERAGAINST SAID SBUTMENT SURFACES OF THE BODY, SAID CENTERING MEANS INCLUDING ELEMENTS YIELDABLE TO ENABLE DISPLACEMENT OF SAID HEADS AXIALLY RELATIVE TO SAID POSITIONING SURFACES UPON THE FURTHER CONVERGENCE OF SAID HEADS TO BODY CLAMPING POSITION.