Expansible cylinder for rotary printing press

Claim 1

AN EXPANSIBLE CYLINDER ADAPTED FOR UNIFORM RADIAL EXPANSION ALONG ITS PERIPHERAL CYLINDRICAL SURFACE AND COMPRISING: A PRECISION, SOLID, CYLINDRICAL METAL BODY; A PRIR OF ALIGNED AXIAL SHAFTS INTEGRAL WITH SAID BODY AT OPPOSED ENDS THERE OF FOR ROTATABLY MOUNTING SAID BODY IN A SUPPORTING STRUCTURE; A THIN, CYLINDRICAL, TUBULAR, ESSENTIALLY RIGID, RADIALLY EXPANSIBLE ELASTIC STEEL SHELL COAXIAL WITH AND COEXTENSIVE WITH SAID BODY AND CONTIGUOUS WITH THE PERIPHERAL CYLINDRICAL SURFACE THEREOF; SAID SHELL BEING DISPOSED ABOUT SAID BODY IN INTIMATE SURFACE CONTACT THEREWITH TO PROVIDE AN INTERFERENCE FIT BETWEEN SAID BODY AND SAID SHELL; FLUID-IMPERVIOUS ANNULAR WELDS ADJACENT OPPOSED ENS OF SAID BODY AND COMPRISING SEALING MEANS BETWEEN SAID BODY AND SAID SHELL TO PROVIDE HIGH MECHANICAL STRENGTH, FLUID-TIGHT, LONGITUDINALLY SPACED JUNCTIONS THEREBETWEEN; FLUID FLOW MEANS IN COMMUNICATION WITH THE INNER SURFACE OF SAID SHELL, SAID FLUID FLOW MEANS COMPRISING CHANNELS ON THE PERIPHERAL SURFACE OF SAID BODY AND EXTENDING ALONG SAID PERIPHERAL SURFACE BETWEEN SAID LONGITUDINALLY SPACED JUNCTIONS; CONDUIT MEANS FOR SUPPLYING HYDRAULIC FLUID UNDER PRESSURE TO SAID CHANNELS TO FORCE SAID FLUID BETWEEN SAID BODY AND SAID SHELL TO PROVIDE A CONTINUOUS ANNULAR FLUID FILM OF UNIFORM TRANSVERSE THICKNESS BETWEEN ADJACENT CYLINDRICAL SURFACES OF SAID BODY AND SAID SHELL, BEING RESPONSIVE TO FLUID PRESSURE LIMITS DEFINED BY SAID SPACED FLUID-TIGHT JUNCTIONS; SAID ELASTIC SHELL BEING RESPONSIVE TO FLUID PRESSURE APPLIED BETWEEN SAID BODY AND SAID SHELL TO EXPAND RADIALLY, UNIFORMLY ALONG THE LENGTH THEREOF BETWEEN SAID LIMITS IN RESPONSE TO FLUID PRESSURE EXERTED BETWEEN SAID BODY AND SAID SHELL, SAID ELASTIC SHELL BEING RESPONSIVE TO RELEASE OF FLUID PRESSURE FROM BETWEEN SAID BODY AND SAID SHELL TO CONTRACT RADIALLY TO BECOME CONTIGUOUS WITH SAID BODY.