Installation for welding or casting under molten slag cooled closure plates

Claim 1

IN AN APPARATUS FOR WELDING UNDER MOLTEN SLAT IN A VERTICAL WELDING GAP BETWEEN WORK-PIECES AND HAVING COOLED CLOSURE PLATES EXTENDING ACROSS THE GAP AT THE FRONT AND BACK OF THE WORK-PIECES FOR CONTAINING THE MOLTEN SLAG IN THE GAP; FRONT AND BACK PRESSURE APPLYING DEVICES FOR HOLDING THE CLOSURE PLATES TIGHTLY AGAINST THE WORKPIECES, EACH OF SAID DEVICES COMPRISING AN ACTUATING ARM, MEANS MOUNTING SAID ARM FOR GENERALLY HORIZONTAL MOVEMENT TOWARD AND AWAY FROM THE WORK-PIECES, A HORIZONTAL PIVOT ON SAID ARM, A LEVER SWINGABLE ON SAID PIVOT RELATIVE TO SAID ARM, PRESSURE EXERTING ON SAID PIVOT MOUNTED ON SAID LEVER FOR GENERALLY HORIZONTAL MOVEMENT RELATIVE TO THE LATTER, SAID RAILS HAVING ARCUATE SURFACES AT ONE END FOR BEARING AGAINST THE RELATED CLOSURE PLATES, A BEAM PIVOTED ON SAID ARM TO SWING RELATIVE TO THE LATTER ABOUT A VERTICAL AXIS AND BEARING AGAINST THE OTHER ENDS OF SAID RAILS, MEANS FOR EXERTING A FORCE URGING SAID ARM TOWARD THE WORK-PIECES WHEREBY SAID BEAM UNIFORMLY TRANSMITS AND FORCE TO SAID RAILS FOR APPLICATION BY THE LATTER TO THE RELATED CLOSURE PLATES, AND ADJUSTABLE SCREW MEANS