Patent for an improvement on patent no. 326,591 so as "to enable a series of troughs in a stock-car to be extended toward and withdrawn 'from a position in line with the heads of the stock simultaneously; second, to provide for a vibrating water-trough a self-folding end support; third, to provide a car-door for the entrance of the stock which is capable of being folded and will unfold to close the door-opening in line with the inner surface of the car; fourth, to provide a sliding rear support for a folding car-door when closed; fifth, to enable the vibrating stall-partitions to be released from a horizontally-retained position from either side of the car; sixth, to enable one exterior end portion of a stock-car to be folded in line with the end hay-racks; seventh, to combine a folding exterior end portion of a car with the interior hay-rack" (lines 18-36).