Method for centrifugal casting and apparatuses for practising it

Claim 1

AN APPARATUS FOR CENTRIUGAL CASTING OF RINGS HAVING ROUND OR POLYGONAL PROFILES WITH ROUNDED OUTER EDGES, COMPRISING A PLURLAITY OF LOWER MOLD PARTS EACH OF WHICH IS INDENTICAL WITH THE OTHER LOWER MOLD PARTS, A CARRYING DEVICE ROTATABLE ABOUT A VERTICAL AXIS AND AN WHICH SAID LOWER MOLD PARTS ARE ROTATABLY MOUNTED AT INTERVALS AROUND SAID CARRYING DEVICE FOR ROTATION ABOUT VERTICAL AXES, AN UPPER MOLD PART ROTATABLY MOUNTED FOR ROTATION AROUND A VERTICAL AXIS AND POSITONED ABOVE ONE OF THE LOWER MOLD PARTS ON SAID CARRYING DEVICE AND BENEATH WHICH THE OTHER LOWER MOLD PARTS ARE MOVED WHEN SAID CARRYING DEVICE IS ROTATED, RAISING MEANS ON SAID CARRYING DEVICE FOR RAISING SAID LOWER MOLD PARTS INTO ENGAGEMENT WITH SAID UPPER MOLD PART OT FORM A COMPLETE MOLD, MOLD ROTATING MEANS CONNECTED TO SAID MOLD PARTS FOR ROTATING THEM ABOUT THEIR VERTICAL AXES, A SUPPLY PIPE EXTENDING THROUGH THE UPPER MOLD PART ALONG THE VERTICAL AXIS THEREOF AND MOUNTED FOR ROTATION ABOUT SAID VERTICAL AXIS, SAID SUPPLY PIPE EXTENDING INTO THE MOLD FORMED BY THE UPPER MOLD PART AND A LOWER MOLD PART AND LATERALLY OF SAID AXIS TO A POINT ADJACENT THE PERIPHERY OF SAID MOLD, AND SUPPLY PIPE DRIVE MEANS CONNECTED TO SAID SUPPLY PIPE FOR ROTATING SAID SUPPLY PIPE ABOUT SAID AXIS.