Forage harvesting units

Claim 1

A FORAGE HARVESTING UNIT FOR MOUNTING ON ONE SIDE OF A TRACTOR, SAID TRACTOR HAVING FRONT AND REAR WHEELS, A REAR AXLE AND A POWER TAKEOFF ADJACENT THE REAR AXLE, SAID UNIT COMPRISING A MAIN SUPPORT ARM, MEANS ON THE REAR END OF SAID SUPPORT ARM FOR SECURING THE SAME TO SAID REAR AXLE WITH SAID ARM EXTENDING FORWARDLY ALONG ONE SIDE OF THE TRACTOR, A LATERAL OUTWARD EXTENSION ON THE FORWARD END OF SAID ARM, A BAR SLIDABLY AND PIVOTALLY MOUNTED ON SAID EXTENSION FOR MOVEMENT TOWARD AND AWAY FROM SAID ARM AND FOR PIVOTAL MOVEMENT ABOUT AN AXIS SUBSTANTIALLY PARALLEL TO THE LONGITUDINAL AXIS OF SAID ARM AND INTERMEDIATE THE LENGTH OF SAID BAR, FLEXIBLE MEMBERS DEPENDING FROM OPPOSITE ENDS OF SAID BAR, AN ELONGATED CUTTER HOUSING OPEN AT THE BOTTOM, A CUTTER SHAFT ROTATABLY MOUNTED IN SAID HOUSING, CUTTERS MOUNTED ON SAID SHAFT AND OPERABLE THROUGH THE OPEN BOTTOM OF SAID HOUSING, A DISCHARGE CHUTE ON THE UPPER SIDE OF SAID HOUSING, A SUPPORT SHAFT ROTATABLY MOUNTED ON THE REAR SIDE OF SAID HOUSING, REARWARDLY EXTENDING SPACED ARMS FIXED TO SAID SUPPORT SHAFT, THE LOWER ENDS OF SAID FLEXIBLE MEMBERS BEING CONNECTED TO THE REAR ENDS OF SAID REARWARDLY EXTENDING ARMS, A HAND LEVER FIXED TO SAID SUPPORT SHAFT FOR TURNING THE SAME TO RAISE OR LOWER SAID HOUSING, FLEXIBLE DRIVE MEANS EXTENDING REARWARDLY FROM SAID CUTTER SHAFT TO SAID POWER TAKEOFF AND LONGITUDINAL BRACE MEANS EXTENDING BETWEEN SAID HOUSING AND SAID REAR AXLE.