Trailer dumping vehicle

Claim 1

AN ELONGATED BOTTOM DUMP VEHICLE BODY HAVING VERTICAL SIDE WALLS PARALLEL TO THE DIRECTION OF STRAIGHTAHEAD MOVEMENT, BOTTOM PANELS SECURED TO THE LOWER EDGES OF THE SIDE WALLS AND SLOPING INWARD AND DOWNWARD AND LEAVING AN ELONGATED OPENING BETWEEN THE INNER EDGES OF THE PANELS, A PAIR OF DOORS HAVING THEIR OUTER EDGES ADJACENT THE INNER EDGES OF THE PANELS WHEN THE DOORS ARE IN THE CLOSED POSITION AND WITH THEIR INNER EDGES COMING TOGETHER, HINGE MEANS FOR EACH DOOR MOUNTING THE DOORS FOR MOVEMENT OUTWARD AND DOWNWARD FROM THE DOORCLOSED POSITION TO THE DOOR-OPEN POSITION, A DOUBLE WALLED PARTITION BETWEEN THE ENDS OF THE BODY AND ABOVE THE DOORS, AN ELONGATED MEMBER FOR EACH DOOR HAVING A FIRST PIVOTAL CONNECTION AT ONE END TO THE DOOR, A LINK HAVING A SECOND PIVOTAL CONNECTION AT ITS ONE END TO THE OTHER END OF THE ELONGATED MEMBER, A THIRD PIVOTAL CONNECTION FOR THE OTHER END OF THE LINK, MEANS MOUNTING THE THIRD PIVOTAL CONNECTION ON SAID PARTITION, AND MOTOR MEANS ALSO CONNECTED WITH THE SECOND PIVOTAL CONNECTION AND OPERABLE TO MOVE THE DOORS BETWEEN A DOOR-CLOSED POSITION, IN WHICH ALL THREE PIVOTAL CONNECTIONS ARE SUBSTANTIALLY IN ALIGNMENT, AND A DOOR-OPEN POSITION, SAID ELONGATED MEMBERS, LINKS, AND MOTOR MEANS DISPOSED BETWEEN THE WALLS OF SAID PARTITION.