Hay crushers

Claim 1

IN A HAY CRUSHING IMPLEMENT HAVING A MAIN FRAME WITH A DRAFT MEMBER ADAPED TO BE COUPLED TO A TOWING VEHICLE, THE COMBINATION OF A ROCK SHAFT JOURNALED ON AND EXTENDING TRANSVERSELY OF THE FRAME, ARMS PROJECTING RADIALLY AT OPPOSITE ENDS OF SAID SHAFT RESPECTIVELY JOURNALING A PAIR OF GROUND WHEELS, A HYDRAULIC ACTUATOR CONNECTED TO SAID ROCK SHAFT AND ADAPTED TO ROCK THE SAME BETWEEN TRANSPORT AND WORKING POSITIONS, A PAIR OF RIGID LEGS DEPENDING AT OPPOSITE SIDES OF THE MAIN FRAME, A LOWER CRUSHING ROLL ROTATABLY SUPPORTED ON SAID LEGS, A PAIR OF BELL CRANKS RESPECTIVELY PIVOTED INTERMEDIATE THEIR ENDS ON SAID LEGS ABOVE SAID LOWER ROLL, EACH SAID BELL CRANK HAVING A PAIR OF ARMS, AN UPPER CRUSHING ROLL ROTATABLY SUPPORTED ON ONE OF THE ARMS OF EACH BELL CRANK WITH ITS AXIS PARALLEL TO THE AXIS OF SAID LOWER ROLL AND IN POSITION TO MOVE TOWARD AND FROM THE LOWER ROLL INCIDENT TO THE ROCKING SAID BELL CRANKS, AND SPRING MEANS CONNECTED BETWEEN THE OTHER ARMS OF SAID BELL CRANKS AND SAID ROCK SHAFT OPERATIVE TO YIELDABLY URGE SAID UPPER ROLL AGAINST SAID LOWER ROLL INCIDENT TO THE ROCKING OF SAID SHAFT TO WORKING POSITION.