VEHICLE HOPPER DOOR OPERATING MECHANISM

A hopper vehicle having hopper door operating mechanism opening a pair of laterally spaced bottom hopper door means, the mechanism including for each pair of door means a pair of opposed air cylinder means each connecting with a plurality of racks for driving same opposite to the other plurality of racks and in turn rotating a corresponding plurality of pinion means to each of which is connected a horizontal drive link which is carried in an arcuate path laterally and has connected to it a pair of laterally extending door connecting arm means for simultaneously opening and closing said pair of laterally opposed door means.