Casing for the production of a shrinkage funnel inhibitor coating in an ingot or like mold

Claim 1

IN A CASING FOR THE PRODUCTION OF HOT TOPS AND THE LIKE, AN EXPANSIBLE SET OF PLATES DEFINING AN INNER ENCLOSURE, MEANS DEFINING A SUPPORTING FRAME WITHIN SAID ENCLOSURE, MEANS DEFINING SECTOR MEMBERS, MEANS PIVOTALLY CONNECTING SAID SECTOR MEMBERS WITH SAID FRAME, LOCKING MEANS FOR SECURING MEMBERS TO SAID FRAME IN DIFFERENT PIVOTAL POSITIONS, TELESCOPIC ARMS CONNECTING SAID PLATES TO SAID SECTOR MEMBERS, MEANS DEFINING FLUID OPERATED CONTROL JACKS SECURED TO SAID FRAME AND HAVING RECTILINEARLY MOVABLE ELEMENTS, MEANS PIVOTALLY CONNECTING SAID RECTILINEARLY MOVABLE ELEMENTS WOTH SAID PLATES, CONDUIT MEANS CONNECTING SAID CONTROL JACKS WITH A SOURCE OF OPERATING FLUID, VALUE MEANS IN SAID CONDUIT MEANS FOR CONTROLLING THE ADMISSION OF SAID OPERATING FLUID TO SAID CONTROL JACKS WHEREBY TO VARY THE CROSS-SECTION OF SAID CASING, AND PIPE MEANS CONNECTED TO SAID CASING FOR SUPPLYING CARBON DIOXIDE GAS FOR HARDENING AN EXOTHERMIC MIXTURE TO FORM SAID HOT TOP.