Folding machine

Claim 1

A MACHINE FOR MULTIPLE FOLDING A FLEXIBLE SHEET COMPRISING, A FIRST CONVYOR MEANS COMPRISING A PLURALITY OF SPACED ENDLESS PARALLEL BELTS SUPPORTED ON ROLLS AT THE FORWARD AND REAR ENDS OF SAID MACHINE AND PROVIDING A PORTION ON WHICH SHEETS MAY BE MOVED IN A LONGITUDINAL FORWARD DIRECTION, A FIRST FOLDING MEANS INCLUDING A FIRSTT PAIR OF PARALLEL ADJACENT ROLLS SUPPORTED FOR OPPOSITE ROTATION ON AXES PARALLEL TO SAID LONGITUDINAL DIRECTION WITH SAID FIRST PAIR ROLLS POSITIONED BELOW AND INTERMEDIATE ADAJACENT EDGES OF TWO OF SAID BELTS, A SECOND PAIR OF ROLLS SUPPORTED FOR ROTATION ON AXES PARALLEL TO THE AXES OF SAID FIRST PAIR OF ROLLS WITH SAID SECOND ROLLS SPACED APART AND WITH BOTH OF SAID SECOND PAIR POSITIONED BELOW AND LATERAL WITH RESPECT TO SAID FIRST PAIR OF ROLLS, A THIRD PAIR OF ROLLS SUPPORTED FOR ROTATION ON AXES PARALLEL TO THE AXES OF SAID SECOND PAIR OF ROLLS WITH SAID THIRD PAIR OF ROLLS SPACED APART FARTHER THAN SAID SECOND PAIR OF ROLLS AND WITH BOTH OF SAID THIRD PAIR BELOW SAID SECOND PAIR, A FIRST PLURALITY OF ENDLESS PARALLEL BELTS ENCIRCLING ONE OF SAID FIRST PAIR AND BOTH OF SAID THIRD PAIR OF ROLLS AND BEARING AGAINST THE OUTER PART OF ONE OF SAID SECOND PAIR OF ROLLS THEREBY PROVIDING ONE PORTION OF SAID BELTS LYING NORMAL AND IN A PLANE PARALLEL TO AND BELOW SAID PORTION OF THE BELTS OF SAID FIRST CONVEYOR MEANS AND A SECOND PORTION EXTENDING ANGULARLY DOWNWARDLY FROM SAID ONE OF SAID FIRST PAIR OF ROLLS, A SECOND PLURALITY OF ENDLESS PARALLEL BELTS ENCIRCLING THE OTHER OF SAID FIRST PAIR AND THE OTHER OF SAID SECOND PAIR OF ROLLS AND PROVIDING A PORTION THEREOF IN FACING RELATION WITH SAID SECOND PORTION OF SAID FIRST PLURALITY OF BELTS AND EXTENDING ANGULARLY DOWNWARD WHEREBY SHEETS FOLDED BY SAID FIRST FOLDING MEANS WILL BE CARRIED ANGULARLY DOWNWARDLY BETWEEN, SAID FACING PORTIONS, MEANS AT THE LOWER PART OF SAID FACING PORTIONS INTERMEDIATE SAID SECOND PAIR OF ROLLS FOR ENGAGING AND REDIRECTING SHEET CARRIED ANGULARLY DOWNWARDLY ONTO SAID ONE PORTION OF SAID FIRST PLURALITY OF BELTS FOR MOVEMENT IN A DIRECTION TRANSVERSE TO SAID LONGITUDINAL FORWARD DIRECTION, AND MEANS FOR EFFECTING A SECOND FOLD IN SAID SHEETS AFTER EACH HAS BEEN CARRIED ONTO SAID ONE PORTION OF SAID FIRST PLURALITY OF BELTS.