Three cylinder convertible printing press

Claim 1

A THREE-CYLINDER CONVERTIBLE PRINTING UNIT HAVING FIRST, SECOND AND THIRD CYLINDER MEMEBRS ARRANGED FOR ROTATION ABOUT THREE PARALLEL AXES FOR PRINTIGN EITHER DIRECTLY FROM A FLEXIBLE PRINTING PLATE OR BY OFFSET FROM A FLEXIBLE COMPRESSIBLE BLANKET. ANN INKER HAVING INK ROLLERS, SAID FIRST CYLINDER MEMBER BEING ARRANGED TO SUPPORT PRINT-RECEIVING MATERIAL PASSING THROUGH A PRINTING ZONE, FIRST MOUNTING MEANS CONSTRUCTED TO RELEASABLY RECEIVE SOLELY THE ENDS OF A FLEXIBLE, SUBSTANTIALLY INCOMPRESSIBLE PRINTING PLATE ELEMENT AND INCLUDING A MEMBER MOVABLE FOR TENSIONING AN END OF SAID PRINTING PLATE ELEMENT, SECOND MOUNTING MEANS CONSTRUCTED TO RELEASABLY RECEIVE SOLELY THE ENDS OF A FLEXIBLE, COMPRESSIBEL BLANKET ELEMENT AND INCLUDING A MEMBER ROTATABLE ON AN AXIS PARALLEL TO THE CYLINDERS FOR TENSIONING ANN END OF SAID BLANKET ELEMENT, MEANS ON SAID SECOND CYLINDER MEMEBR FOR SECURING THERETO AT LEAST THE TENSIONING MEMBER FOR EITHER SAID FIRST OR SAID SECOND MOUNTING MEANS FOR MOVEMENT ABBOUT THE AXIS OF SAID SECOND CYLINDER MEMBER, WITH THE CORRESPONDING ELEMENT RECEIVED THEREBY BEING ADAPTED TO RUN IN ROLLING CONTACT WITH THE PRINT-RECEIVIDNG MATERIAL AT SAID PRINTING ZONE WHILE SUPPORTED BY SAID FIRST CYLINDER MEMBER,