Folding machine roller adjusting mechanism

Claim 1

IN A PAPER FOLDING MACHINE HAVING A TRAIN OF A STATIONARY ROLLER AND AT LEAST TWO MOVABLE ROLLERS ALL DISPOSED WITH AXES PARALLEL TO EACH OTHER AND ADAPTED TO HAVE PAPER PASSED FIRST BETWEEN A FIRST OF SAID ROLLERS AND A SECOND OF SAID ROLLERS, THENCE BETWEEN THE SECOND OF SAID ROLLERS AND THE THIRD OF SAID ROLLERS THE COMBINATION COMPRISING A PLURALITY OF LEVER MEANS PIVOTED TO THE FRAME OF SAID PAPER FOLDING MACHINE WITH EACH SUCH LEVER MEANS CARRYING ONE END OF ONE SAID MOVABLE ROLLERS, FIRST BIAS MEANS COMPRISING A HYDRAULIC PISTON AND CYLINDER COMBINATION FOR EACH SUCH LEVER MEANS, EACH SUCH COMBINATION BEING ADAPTED TO BIAS SAID LEVER MEANS IN A DIRECTION BY WHICH PAIRS OF SAID ROLLERS ARE RESILIENTLY URGED INTO CONTACT WITH EACH OTHER, ADDITIONAL BIAS MEANS OPERABLE AT AT LEAST ONE END OF THE FIRST OF SAID MOVABLE ROLLERS INDEPENDENTLY OF SAID HYDRAULIC PISTON AND CYLINDER COMBINATION, FOR MAKING FINE ADJUSTMENTS IN THE RELATIVE BIAS OF THE TWO ENDS OF SAID FIRST MOVABLE ROLLER, HYDRAULIC LINE MEANS CONNECTED TO EACH OF SAID PISTON AND CYLINDER COMBINATIONS AND TO EACH OTHER, A MASTER HYDRAULIC PISTON AND CYLINDER COMBINATION CONNECTED TO ALL SAID HYDRAULIC LINE MEANS, MEANS FOR RESILIENTLY URGING SAID MASTER PISTON INTO SAID MASTER CYLINDER WITH A PREDETERMINED AND YIELDABLE FORCE WHEREBY A PRESSURE OF PREDETERMINED AMOUNT IS CREATED WITHIN ALL SAID LINES AND CYLINDERS AND SAID LEVERS ARE BIASED IN RESPONSE THERETO.