Automatic roll changing means and methods of roll changing

Claim 1

A ROLLING MILL WITH AUTOMATIC WORK ROLL CHANGING COMPRISING A ROLLING MILL STAND INTERCHANGEABLY RECEIVING PAIRED WORK ROLLS, PAIRED WORK ROLLS OPERATIVELY MOUNTED ON CARRIER MEANS ADAPTED TO BE MOVED INTO AND OUT OF SAID ROLLING MILL STAND, DRIVE MEANS ON ONE SIDE OF SAID ROLLING MILL STAND OPERATIVELY ENGAGING SAID WORK ROLLS WHEN SAID ROLLS ARE IN THE MILL STAND, PUSHER MEANS ON THE SAID ONE SIDE OF SAID MILL STAND FOR MOVING SAID WORK ROLL CARRIER MEANS INTO AND OUT OF SAID STAND, A SLIDING FLOOR MEMBER MOVABLE FROM A FIRST POSITION ADJACENT THE OTHER SIDE OF SAID MILL STAND SELECTIVELY RECEIVING AND DISCHARGING SAID CARRIER MEANS AND ROLLS INTO AND OUT OF THE MILL STAND TO A SECOND POSITION REMOTE FROM THE MILL STAND, A WELL ON SAID OTHER SIDE OF THE MILL STAND, ELEVATOR MEANS IN SAID WELL, A VERTICALLY MOVABLE ELEVATING FLOOR MEMBER ON SAID ELEVATOR MEANS MOVABLE FROM SAID FIRST POSITION OF THE SLIDING FLOOR MEMBER WHEN SAID SLIDING FLOOR MEMBER IS IN ITS REMOTE POSITION TO A BOTTOM POSITION AT THE BASE OF THE WELL, SAID VERTICALLY MOVABLE FLOOR PLATE SELECTIVELY RECEIVING AND DISCHARGING A WORK ROLL CARRIER MEANS AND ROLLS INTO THE MILL STAND IN SAID FIRST POSITION AND CARRYING SAID WORK ROLL CARRIER MEANS AND WORK ROLLS BENEATH THE FLOOR LEVEL AND DRIVE MEANS FOR MOVING SAID SLIDING FLOOR MEMBER SELECTIVELY RELATIVELY TO THE MOVEMENT OF THE ELEVATING MEANS.