Clamping means for mounting carrier sheets on flat or round surfaces

Claim 1

IN PRINTING APPARATUS, THE COMBINATION COMPRISING A SUPPORT HAVING A SUPPORTING SURFACE, SAID SUPPORT BEING PROVIDED WITH A RECESS CONTIGUOUS TO SAID SUPPORTING SURFACE AND HAVING SIDE WALLS INTERSECTING SAID SUPPORTING SURFACE, A FLEXIBLE CARRIER SHEET REMOVABLY ENGAGED IN FACING RELATION WITH SAID SUPPORTING SURFACE AND HAVING A FIRST TRANSVERSE LIP ON END OF SAID SHEET, REMOVABLY EXTENDING INTO SAID RECESS AND AGAINST ONE WALL THEREOF. A SECOND TRANSVERSE LIP ON THE OTHER END OF SAID SHEET ENTERING INTO SAID RECESS AGAINST SAIF FIRST LIP, WITH A TRANSVERSE END OF THE SHEET WHICH ADJOINS SAID SECOND LIP EXTENDING ACROSS SAID RECESS; AND CLAMPING MEANS IN SAID RECESS RELEASABLY CLAMPING SAID LIPS IN SAID RECESS, SAID CLAMPING MEANS COMPRISING A ROTATABLE CAM IN SAID RECESS AND HAVING AN ENGAGING PORTION MOVALBE INTO AND OUT OF ENGAGEMENT WITH SAID SECOND LIP TO EFFECT CLAMPING AND RELEASE OF BOTH SAID LIPS, SAID RECESS BEING OF ELONGATE CONFIGURATION, SAID CAM BEING OF ELONGATE CONFIGURATION WITHIN SAID RECESS AND HAVING ITS ENGAGING PORTIO EXTENDING LONGITUDINALLY OF SAID CAM, AND SAID SECOND LIP BEING OF ELONGATE CONFIGURATION EXTENDING ALING SAID OTHER END OF SAID SHEET, FOR CLAMPING ENGAGEMENT OF SAID ENGAGING PORTION ENTIRELY ALONG SAID SECOND LIP, SAID SECOND LIP COMPRISING A FLANGE ON SAID OTHER END OF SAID SHEET EXTENDING LONGITUDINALLY THEREALONG, A RESILIENTLY DEFORMABLE LAYER ON SAID FLANGE EXTENDING LONGITUDINALLY THEREOF, AND AN ADDITIONAL LAYER ON SAID RESILIENTLY DEFORMABLE LAYER EXTENDING LONGITUDINALLY THEREOF AND COMBINING WITH SAID FLANGE TO SANDWICH THEREBETWEEN SAID RESILIENTLY DEFORMABLE LAYER, SAID SANDWICH LAYER BEING OF DECREASING DIMENSION BETWEEN SAID FLANGE AND ADDITIONAL LAYER FROM ITS MEDIAL REGION TOWARD ITS OPPOSITE ENDS, WHEREBY ENGAGEMENT OF SAID ENGAGING PORTION WITH SAID SECOND LIP PROCEEDS FROM THE MEDIAL REGION THEREOF LATERALLY OUTWARD TOWARD ITS OPPOSITE ENDS.