Mower

Claim 1

A MOWER COMPRISING A FRAME ADAPTED TO BE MOVED OVER THE GROUND IN A FORWARD DIRECTION, A PINTLE CARRIED BY SAID FRAME, A SLEEVE MEMBER JOURNALLED ON SAID PINTLE FOR PIVOTAL MOVEMENT ABOUT THE AXIS OF THE PINTLE, A YOKE MEMBER MOUNTED ON SAID SLEEVE MEMBER FOR PIVOTAL MOVEMENT RELATIVE THERETO ABOUT AN AXIS PERPENDICULAR TO THE AXIS OF SAID PINTLE, SAID YOKE MEMBER HAVING A GENERALLY VERTICAL PLANAR SURFACE THEREON, A DRAG BAR EXTENDING GENERALLY TRANSVERSE TO THE DIRECTION OF TRAVEL OF SAID FRAME AND HAVING ONE END DISPOSED LATERALLY TO ONE SIDE OF SAID FRAME, A CUTTERBAR MOUNTED ON SAID ONE END OF THE DRAG BAR AND EXTENDING LATERALLY BEYOND SAID ONE END OF THE DRAG BAR, A MOWER DRIVING HEAD MOUNTED ON SAID DRAG BAR AND DRIVINGLY CONNECTED TO SAID CUTTERBAR, SAID DRIVING HEAD INCLUDING A DRIVEN PULLEY, A PLATE HAVING AT LEAST ONE GENERALLY VERTICAL PLANAR SURFACE, MEANS RIGIDLY MOUNTING SAID PLATE ON THE END OF SAID DRAG BAR OPPOSITE SAID ONE END WITH THE GENERALLY VERTICAL PLANAR SURFACE OF THE PLATE PERPENDICULAR TO THE AXIS OF SAID DRAG BAR, MEANS RELEASABLY CLAMPING SAID PLATE TO SAID YOKE MEMBER WITH THE GENERALLY VERTICAL PLANAR SURFACE OF THE PLATE ABUTTING SAID GENERALLY PLANAR SURFACE OF THE YOKE MEMBER IN A SELECTIVE ONE OF A PLURALITY OF ANGULAR POSITIONS RELATIVE TO THE AXIS OF SAID DRAG BAR THEREBY MOUNTING SAID DRAG BAR ON SAID YOKE MEMBER FOR ANGULAR ADJUSTMENT ABOUT THE AXIS OF THE DRAG BAR TO VARY THE FORE-AND-AFT TILT OF THE CUTTERBAR, A JOURNAL BOX MOUNTED ON SAID YOKE MEMBER FOR PIVOTAL MOVEMENT RELATIVE THERETO TOWARD AND AWAY FROM SAID DRIVEN PULLEY, A DRIVE PULLEY JOURNALLED IN SAID JOURNAL BOX, AN ENDLESS BELT TRAINED AROUND SAID DRIVE PULLEY AND SAID DRIVEN PULLEY FOR DRIVING SAID MOWER DRIVING HEAD FROM SAID DRIVE PULLEY, ADJUSTMENT MEANS INTERCONNECTED BETWEEN SAID JOURNAL BOX AND SAID YOKE MEMBER FOR SELECTIVELY PIVOTING SAID JOURNAL BOX TOWARD AND AWAY FROM SAID DRIVEN PULLEY TO ADJUST THE TENSION OF SAID ENDLESS BELT, AND MEANS LOCKING SAID JOURNAL BOX RIGID WITH SAID YOKE MEMBER TO MAINTAIN CONSTANT TENSION ON SAID ENDLESS BELT.