Constant-pressure pinch rolls for continuous casting

Claim 1

APPARATUS FOR MAINTAINING A CONSTANT PINCH ROLL PRESSURE IN A CONTINUOUS CASTING SYSTEM COMPRISING A PAIR OF FLEXED BEARING BLOCKS, A PAIR OR RECIPROCABLE BEARING BLOCKS WHICH ARE MOVABLE TOWARD AND AWAY FROM SAID FIXED BEARING BLOCKS, AT LEAST ONE PINCH ROLL, JOURNALED FOR ROTATION IN SAID PAIR OF FIXED BEARING BLOCKS, AT LEAST ONE PINCH ROLL JOURNALED FOR ROTATION IN SAID PAIR OF RECIPROCABLE BEARING BLOCKS, SAID PINCH ROLLS ADAPTED TO CONFINE A CASTING PASSING THEREBETWEEN AND IN CONTACT THEREWITH, SPRING MEANS URGING SAID RECIPROCABLE BEARING BLOCKS TOWARD SAID FIXED BEARING BLOCKS, FLUID PRESSURE OPERATED MEANS OPPOSING THE FORCE OF SAID SPRING MEANS, MEANS FOR CONTINUOUSLY MEASURING THE FORCE TRANSMITTED TO THE FIXED BEARING BLOCKS FROM THE CASTING, MEANS FOR TRANSMITTING A SIGNAL WHICH IS PROPORTIONAL TO THE DIFFERENCE BETWEEN SAID MEASURED FORCE AND A PRESELECTED FORCE, AND MEANS FOR MOVING SAID RECIPROCABLE BEARING BLOCKS IN RESPONSE TO SAID DIFFERENTIAL SIGNAL.