Apparatus for producing refractory lined molds

Claim 1

APPARAUTS FOR LINING A GENERALLY CYLINDRICAL MOLD WITH A REFRACTORY MATERIAL WHICH COMPRISES MEANS FOR ROTATING SAID MOLD WITH ITS LONGITUDINAL AXIS EXTENDING IN A GENERALLY VERTICAL PLANE, AN ELONGATED HOLLOW MEMBER ADAPTED FOR VERTICAL MOVEMENT WITHIN SAID MOLD, MEANS TO INTRODUCE A HEATED REFRACTORY MATERIAL INTO SAID HOLLOW MEMBER, A FORMING MEMBER ADJACENT THE LOWER END OF SAID HOLLOW MEMBER SPACED FROM AND CONCENTRIC WITH THE INNER SURFACE OF SAID CYLINDRICAL MOLD, THERE BEING A PLURALITY OF OPENINGS IN SAID HOLLOW MEMBER ADJACENT SAID FORMING MEMBER FOR INTRODUCING SAID HEATED REFRACTORY MATERIAL BETWEEN THE INNER SURFACE OF SAID MOLD AND SAID FORMING MEMBER WHEREBY A LINING IS FORMED ON THE INNER SURFACE OF SAID MOLD, SAID FORMING MEMBER BEING ADAPTED TO ENGAGE THE INNER SURFACE OF SAID LINING WHILE SAID MOLD IS ROTATING WHEREBY SAID INNER SURFACE IS SMOOTHED, A SPRAY HEAD BENEATH SAID FORMING MEMBER AND ADAPTED FOR MOVEMENT AXIALLY OF SAID MOLD FOR DISPENSING A FUSIBLE BONDING MATERIAL ONTO THE INNER SURFACE OF SAID LINING THUS FORMED, MEANS FOR MOVING SAID HOLLOW MEMBER AND SAID FORMING MEMBER TOGETHER WITH SAID SPRAY HEAD UPWARDLY AND AXIALLY WITHIN SAID MOLD WHILE SAID MOLD IS ROTATING, WHEREBY THE REFRACTORY LINING IS FIRST APPLIED UNIFORMLY TO THE INNER WALL OF THE MOLD BY SAID FORMING MEMBER WITH THE INNER SURFACE OF SAID LINING BEING SMOOTHED BY SAID FORMING MEMBER AND SAID HEAT FUSIBLE BONDING MATERIAL IS THEN APPLIED TO THE INNER SURFACE ONLY OF SAID REFRACTORY LINING WHEREBY THE HEAT FROM THE REFRACTORY LINING MATERIAL FUSES THE BONDING MATERIAL TO THUS FUSE TOGETHER THE INNER SURFACE ONLY OF SAID REFRACTORY LINING.