ROLLING MILL WITH SHIFTING CAMS FOR SHAPING BARS

A roll carriage provided with a vertically movable roll is normally located at one end of a rolling mill housing but is movable back and forth through a passage in the housing. An anvil for supporting a heated bar is movable back and forth through the same passage beneath the roll. Mounted in the housing above the roll is a first cam bar that has a lower surface of a predetermined shape. Beside this cam a similar cam bar is mounted. When a portion of the anvil has moved forward beneath the roll, the carriage also is moved forward until the roll engages both the overlying first cam and the central portion of a heated bar on the anvil, whereupon the roll shapes the trailing end of the bar. Then the cam bars are moved sideways to position the second cam above the roll so that when the carriage and anvil are returned through the housing passage the roll will shape the previously unrolled end of the heated bar.