Abstract: A gravity bed trailer in which side and end walls and a bottom form a bed with an opening in the rear wall, and the bottom slopes at a substantial angle from a point near the upper edge of the front wall to a point adjacent the lower edge of the opening in the rear wall. A frame supports the bed, which in turn is supported on an undercarriage, and the tongue extends forwardly from the frame near the upper part thereof and supports a fifth wheel mount on the forward end. A sliding door movable in a pair of spaced tracks closes the opening, and a means slides the door upwardly and downwardly to open and close the opening.

Abstract: An undercarriage for farm wagons and similar vehicles in which the frame of the vehicle is mounted on one or more axles by units at each end of the axles, each unit consisting of plates connected to the axle, a plate connected to the frame and a member of elastomeric material bonded to the facing surfaces of the axle and frame plates to form the primary support at each end of the axle for the frame. The elastomeric material may be rubber and is preferably of a parallelogram shape in vertical cross sectional direction with the low vertical side being connected to the axle plate and the high vertical side being connected to the frame plate. Second axle and frame plates may be employed to which the first axle and frame plates are rigidly secured by bolts or other securing means.