Mold clamping devices

Claim 1

A SUBSTANTIALLY UPRIGHT OPEN END FLUID COOLED MOLD COMPRISING A PLURALITY OF SEPARATE METALLIC MEMBERS DEFINING THE OPPOSITE SIDE AND END WALLS MOLD, MEANS FOR FLUID COOLING EACH OF SAID MEMBERS, A RIGID HOLLOW FRAME ENCLOSING SAID MEMBERS IN SPACED RELATIONSHIP, MEANS FOR SUPPORTING SAID MEMBERS IN SAID FRAME AT A VERTICALLY FIXED POSITION, ONE SIDE AND ONE END MEMBER OF SAID MOLD ABUTING THE ADJOINING SURFACE OF SAID FRAME, AND MEANS FOR IMPOSING A VERTICALLY UNIFORM HORIZONTAL PRESSURE ON THE OTHER END AND SIDE AND ONE END MEMBER OF INCLUDING HORIZONTALLY SPACED VERTICALLY ELONGATED RECESSES IN SAID FRAME OPENING TO THE ADJACENT OTHER END AND SIDE MEMBERS OF SAID MOLD, A DEFORMABLE PRESSURE RETAINING BLADDER IN EACH OF SAID RECESSES, A PISTON WITHIN EACH OF SAID RECESSES AND HORIZONTALLY OPERABLE IN THE RECESS TO ENGAGE ONE OF SAID OTHER MEMBERS, THE PISTON HAVING A VERTICAL CROSS-SECTION ESSENTIALLY EQUAL TO THAT OF THE RECESS AND HAVING ITS SURFACE FACING THE RECESS HAVING ESSENTIALLY THE SAME CONFIGURATION AS THAT OF THE BLADDER, A ONE PIECE GASKET POSITIONED BETWEEN THE BLADDER AND THE PISTON AND COVERING THE SURFACES BETWEEN THE BACK SIDE OF SAID PISTON AND THE FACING PORTION OF SAID RECESS, AND MEANS FOR SUPPLYING PRESSURE ON SAID BLADDERS TO EXERT SUBSTANTIALLY UNIFORM PRESSURE ON SAID METALLIC MEMEBERS TO MAINTAIN SAID MOLD IN ASSEMBLY DURING OPERATION.