Roll-over mechanism

Claim 1

IN EARTH WORKING EQUIPMENT INCLUDING A MOBILE FRAME HAVING A TOOL CARRIER SUPPORTED THEREON FOR TURNING MOVEMENT ABOUT A REARWARDLY EXTENDING PIVOT MEMBER TO SELECTIVELY POSITION RIGHT-HAND AND LEFT-HAND PLOW GANGS IN AN OPERATIVE POSITION: (A) POWER MEANS CARRIED BY SAID MOBILE FRAME AND HAVING A MOVABLE POWER DELIVERING ELEMENT; (B) MOTION TRANSMISSION MEANS BETWEEN SAID ELEMENT AND SAID TOOL CARRIER FOR MOVING IT TO SAID OPERATIVE POSITIONS, SAID TRANSMISSION MEANS INCLUDING (C) DRIVING MEANS INCLUDING A FIRST LEVER POSITIONED REARWARDLY OF THE MOBILE FRAME AND SUPPORTED AT ITS INNER END ABOVE SAID PIVOT MEMBER FOR SWINGING MOVEMENT OF ITS OUTER END BELOW SAID PIVOT MEMBER BETWEEN POSITIONS RESPECTIVELY ON OPPOSITE SIDES THEREOF, SAID LEVER BEING CURVED TO EXTEND AROUND SAID PIVOT MEMBER IN ONE OF SAID POSITIONS; (D) DRIVEN MEANS INCLUDING A SECOND LEVER CONNECTED TO SAID CARRIER AND HAVING AN AXIS OF ROTATION COINCIDENT WITH THE TURNING AXIS OF THE CARRIER, SAID FIRST LEVER HAVING A SUBSTANTIALLY COPLANAR CONNECTION AT ITS OUTER END WITH SAID SECOND LEVER FOR ROTATIONAL MOVEMENTS IN THE SAME DIRECTION DURING FORWARD AND REVERSE ACTUATIONS THEREOF; AND (E) MEANS OPERATIVELY CONNECTING THE DRIVING MEANS WITH SAID ELEMENT.