Gauging device for steel rolling mill

Claim 1

IN A GAUGING DEVICE FOR HOT ROD TRAVERSING A ROLLING MILL, A PAIR OF CYLINDERS, A PAIR OF FRAMES, EACH OF SAID CYLINDERS ROTATIVELY CARRIED IN ONE OF SAID FRAMES, MEANS FOR BIASING SAID FRAMES TOWARD EACH OTHER WHEREBY SAID CYLINDERS COOPERATE IN ROLLING CONTACT ALONG A LINE PARALLEL TO THE AXES OF SAID CYLINDERS SO THAT ANY HOT ROD PASSING BETWEEN SAID CYLINDERS WILL SEPARATE SAID CYLINDERS A DISTANCE EQUAL TO THE DIAMETER OF SAID ROD AND WILL ENGAGE SAID CYLINDERS IN ROLLING CONTACT, SAID MEANS FOR BIASING SAID FRAMES FURTHER BEING FORMED TO PERMIT SAID FRAMES TO INTEGRALLY MOVE ALONG AN AXIS PERPENDICULAR TO THE AXES OF SAID CYLINDERS WHEREBY SAID CYLINDERS WILL FOLLOW ANY LATERAL MOVEMENTS OF SAID ROD TO RETAIN CONTACT THEREWITH, EACH OF SAID CYLINDERS BEING FURTHER FORMED TO HAVE A PLURALITY OF VANES DISPOSED ABOUT THE PERIPHERY THEREOF, AIR CONDUIT MEANS CARRIED BY EACH OF SAID FRAMES AND DISPOSED IN ALIGNMENT WITH SAID VANES SO THAT AIR ISSUING FROM SAID CONDUIT MEANS WILL STRIKE SAID VANES ON SAID CYLINDERS TO ROTATE SAID CYLINDERS IN THE SAME DIRECTION AT THEIR LINE OF CONTACT THAT ANY HOT ROD MOVES IN PASSING THEREBETWEEN, MEANS FOR ADJUSTABLY DELIVERING COMPRESSED AIR TO SAID AIR CONDUIT MEANS FOR INITIALLY ROTATING SAID CYLINDERS AT SUBSTANTIALLY THE SAME SPEED AS ANY HOT ROD TO BE PASSED THEREBETWEEN, AND REMOTE INDICATING MEANS CONNECTED TO SAID FRAMES FOR CONTINUOUSLY INDICATING THE DISTANCE BETWEEN SAID CYLINDERS AS SAID ROD MOVES LONGITUDINALLY THEREBETWEEN.