Rotary arbor for making synthetic stone

Claim 1

IN AN INSTALLATION FOR THE MANUFACTURE OF A SYNTHETIC BODY OF REVOLUTION COMPRISING A STOVE INCLUDING A WALL DEFINING AN INNER ROOM, A ROTABLE SUPPORT EXTENDING INTO THE INNER ROOM OF THE STOVE, AND A BLOWPIPE FOR DISPENSING MELTED SYNTHETIC POWDERY MATERIAL ON THE ROTATABLE SUPPORT TO FORM, BY ACCUMULATION OF THE POWDERY MATERIAL ON THE ROTATABLE SUPPORT, A SYNTHETIC BODY OF REVOLUTION, THE IMPROVEMENT COMPRISING: A SECOND MOVABLE BLOW-PIPE OPENING INTO THE INNER ROOM OF SAID STOVE IN DIAMETRICALLY OPPOSED RELATIONSHIP TO THE SAID FIRST BLOW-PIPE WITH RESPECT TO THE AXIS OF ROTATION OF SAID SUPPORT, THE AXIS OF SAID SECOND BLOW-PIPE BEING COAXIAL WITH RESPECT TO THE AXIS OF SAID FIRST BLOW-PIPE, A TABLE CARRYING SAID STOVE MOVALBE IN A DIRECTION PARALLEL TO THE COMMON AXIS OF THE TWO BLOW-PIPES, FIRST DRIVING MEANS FOR MOVING THE TABLE WITH RESPECT TO THE FIRST BLOWPIPE AT A FIRST RATE, AND SECOND DRIVING MEANS FOR MOVING THE MOVABLE BLOW-PIPE AT A SECOND DIFFERENT RATE SUCH THAT THE AXIS OF ROTATION OF THE BODY OF REVOLUTION DURING THE FOMATION THEREOF REMAINS CONSTANTLY AT HALF THE DISTANCE BETWEEN THE TWO BLOW-PIPES WHEREBY THE PERIPHERY OF THE BODY OF REVOLUTION IS MAINTAINED AT A CONSTANT DISTANCE FROM THE BLOW-PIPES.