Apparatus for making preformed building elements

Claim 1

A MULTIPLE MOLD FOR FABRICATION OF A PLURALITY OF LARGE BUILDING MODULES HAVING THIN WALLS WITHIN WHICH IS INSERTED MATERIAL ADAPTED TO EXPAND INTO AN INSULATING FOAM-LIKE MASS WHEN STEAM IS APPLIED THERETO COMPRISING A FLOOR HAVING TRACKS EXTENDING LONGITUDINALLY THEREOF, A FIRST VERTICALLY UPSTANDING END WALL AND A SECOND VERTICALLY EXTENDING END WALL EXTENDING TRANSVERSELY OF SAID FLOOR, SAID END WALLS BEING FABRICATED OF CAST CONCRETE BUTTRESSED BY CONCRETE BUTTRESSES WITHIN WHICH IS MOUNTED A STEEL FRAMEWORK FOR DIMENSIONAL STRENGTH, TRANSVERSELY EXTENDING TROLLEYS MOVABLE OVER SAID TRACKS, SAID TROLLEYS DIMENSIONED TO MATCH THE DIMENSIONS OF THE SIDE WALLS OF SAID MODULE, TRANSVERSELY EXTENDING SEPARATORS MOVABLE LONGITUDINALLY OVER SAID TRACKS IN SAID FLOOR, SAID SEPARATORS DIMENSIONED TO MATCH THE DIMENSIONS OF THE FACES OF THE MODULE, SAID SEPARATORS BEING POSITIONED BETWEEN ADJACENT TROLLEYS TO DEFINE A PLURALITY OF CAVITIES AS EACH TROLLEY POSITION FOR THE RECEIPT OF A BUILDING MODULE, A FACE PLATE POSITIONED IN FRONT OF AND SEPARATED FROM ONE END WALL, A BACK WALL MOVABLE OVER SAID FLOOR, SAID BACK WALL COMPRISING A BACK FACE PLATE RIGIDLY AFFIXED THERETO, A FIRST AND SECOND SIDE WALL MOVABLE INTO RESTRAINING CONTACT WITH THE END WALLS OF THE MODULES, A TOP WALL MOVABLE INTO RESTRAINING POSITION AGAINST THE SIDE WALLS OF THE MODULE, SAID TOP WALL HAVING A PLURALITY OF APERTURES THERETHROUGH COMMUNICATING WITH APERTURES IN THE SIDE WALLS OF SAID MODULES, MEANS FOR SECURING SAID TOP WALL IN POSITION IN CONTACT WITH SAID MODULES, A STEAM HEADER PROVIDED WITH A PLURALITY OF NOZZLES, MEANS FOR LOWERING SAID HEADER UNTIL SAID NOZZLES ENTER SAID APERTURE IN SAID TOP WALL, AND MEANS FOR QUICKLY RAISING SAID HEADERS.