Ejector mechanism for pattern plates

Claim 1

APPARATUS FOR MAKING HOLLOW ARTICLES BY APPLYING TO A HEATED PATTERN A MOULDING MIXTURE COMPRISING A PULVERULENT MATERIAL AND A HARDENABLE SYNTHETIC RESIN IN POWDER FORM A COATING ON THE PATTERN, AND CURING SAID COATING BY HEAT, SAID APPARATUS COMPRISING A HORIZONTAL ROTATABLE TABLE XX PLURALITY OF PATTERN CARRIERS SPACED AT EQUAL INTERVALS AROUND THE PERIPHERY OF SAID TABLE, EACH OF SAID CARRIERS BEING HINGED TO SAID TABLE FOR RADIALLY OUTWARD SWINGING MOVEMENT IN A VERTICAL PLANE, AND EACH OF SAID CARRIERS INCLUDING MEANS FOR EJECTING A CURED COATING FROM A PATTERN, AND AN ELEMENT FOR ACTUATING SAID EJECTOR MEANS, SAID ACTUATING ELEMENT BEING MOVABLE IN ONE DIRECTION TO OPERATE DIRECTION TO RESET TO PERFORM EJECTION AND IN THE OPPOSITE DIRECTION TO RESET THE EJECTOR MEANS, AN OVEN OF ARCUATE FORM EXTENDING AROUND A PART OF THE TABLE IN THE PATH OF THE PATTERN CARRIERS, A CONTAINER FOR MOULDING MIXTURE DISPOSED ADJACENT TO THE PERIPHERY OF THE TABLE, MEANS FOR ROTATING THE TABLE INTERMITTENTLY WITH A DWELL EACH TIME A PATTERN CARRIER ARRIVES OPPOSITE THE CONTAINER, WHEREBY SAID CARRIER CAN BE SWUNG RADIALLY OUTWARDS ABOUT ITS HINGES TO POSITION IT OVER THE MOUTH OF THE CONTAINER WITH THE PATTERN INVERTED WITHIN THE LATTER, A FIXED CAM MEMBER DISPOSED IN THE PATH OF THE EJECTOR ACTUATING ELEMENT AS THE LATTER TRAVELS FROM A POINT WITHIN THE OVEN TO THE CONTAINER, SAID CAM MEMBER SERVING TO EFFECT THE EJECTING MOVEMENT OF THE EJECTOR ACTUATING ELEMENT, AND A CAM TRACK DISPOSED IN THE PATH OF THE EJECTOR ACTUATING ELEMENT DURING THE RADIALLY OUTWARD SEING OF THE PATTERN CARRIER, SAID CAM TRACK SERVING TO EFFECT THE RESETTING MOVEMENT OF THE EJECTOR ACTUATING ELEMENT.