Continuous casting apparatus with positive drive oscillating means

Claim 1

IN APPARATUS FOR CONTINUOUSLY CASTING METAL FROM THE MOLTEN STAGE, A COOLED MOLD OPEN AT BOTH ENDS, MEANS FOR INTRODUCING MOLTEN METAL AT ONE END OF SAID MOLD WHEREUPON IT IMMEDIATELY FORMS A THIN SKIN AGAINST SAID COOLED MOLD, MEANS FOR CONTROLLING THE REMOVAL OF THE METAL BAR FORMED IN SAID MOLD OUT OF THE OTHER END OF SAID MOLD AT A CONTROLLED RATE, WHEREIN NORMAL FRICTION EXISTS BETWEEN SAID BAR AND SAID MOLD WHEN SAID BAR IS MOVING THROUGH SAID MOLD AT SAID CONTROLLED RATE AND ABNORMAL FRICTION EXISTS THERE WHEN SAID BAR STICKS TO SAID MOLD, MEANS MOUNTING SAID MOLD FOR MOVEMENT BACK AND FORTH IN THE DIRECTION OF BAR MOVEMENT, OSCILLATORY MEANS CONTINUOUSLY POSITIVELY DRIVING SAID MOLD BACK AND FORTH IN THE DIRECTION OF BAR MOVEMENT, AND SAID OSCILLATORY MEANS YIELDING URGING SAID MOLD IN THE DIRECTION UPSTREAM OF SAID BAR MOVEMENT WITH A FORCE LESS THAN THAT SUFFICIENT TO RUPTURE SAID THIN SKIN AND GREATER THAN SAID NORMAL FRICTION, WHEREBY UNDER ABNORMAL FRICTION SAID MOLD MOVES DOWNSTREAM WITH SAID BAR, AND MEANS FOR STOPPING SAID MOLTEN METAL INTRODUCING MEANS AND FOR STOPPING SAID BAR REMOVAL MEANS RESPONSIVE TO A PREDETERMINED MOVEMENT OF SAID MOLD DOWNSTREAM.