Die arrangement for a press

Claim 1

IN A FOLDING PRESS FOR FOLDING A SHEET INTO ANGULAR SHAPE, IN COMBINATION, A MALE DIE MEANS HAVING AN ELONGATED CONTINUOUS PROJECTING PRESS FACE EXTENDING IN ONE DIRECTION, AND A FEMALE DIE MEANS INCLUDINGA A PLURALITY OF FEMAL DIES, EACH OF SAID FEMALE DIES HAVING A PAIR OF DIE LEGS FORMING A V-SHAPED NOTCH EXTENDING IN SAID DIRECTION, SAID NOTCHES OF SAID DIES BEING ALIGNED IN SAID DIRECTION AND FACING SAID PROJECTING PRESS FACE, AND ROLLERS TURNABLY MOUNTED ON THE ENDS OF SAID DIE LEGS OF SAID FEMALE DIES WITH SAID DIE LEGS ENGAGING A MAJOR PORTION OF THE CYLINDRICAL SURFACES OF SAID ROLLERS, SAID ROLLERS FACING SAID NOTCHES SO AS TO BE ADAPTED TO ENGAGE A SHEET LOCATED BETWEEN SAID PRESS FACE AND SAID NOTCHES SO THAT SAID ROLLERS TURN WHEN SAID SHEET IS FOLDED INTO SAID NOTCHES BY SAID PRESS FACE PASSING INTO SAID NOTCHES, SAID FEMALE DIES BEING MOVABLE IN SAID DIRECTION BETWEEN A SPREAD POSITION IN WHICH SAID FEMALE DIES ARE SPACED FROM EACH OTHER AND IN WHICH THE TOTAL EXTENSION OF SAID FEMAL DIE MEANS IN SAID DIRECTION IS SUBSTANTIALLY THE SAME AS THE LENGTH OF SAID PRESS FACE, AND A CONTRACTED POSITION IN WHICH THE TOTAL EXTENSION OF SAID FEMAL DIE MEANS IN SAID DIRECTION IS LESS THAN SAID LENGTH OF SAID PRESS FACE WHEREBY SHEETS OF DIFFERENT LENGTH REQUIRING THE SAME PRESS FORCE CAN BE FOLDED INTO ANGULAR SHAPE BETWEEN SAID PRESS FACE AND SAID ALIGNED V-SHAPED NOTCHES.