Abstract: Means for mounting and securing a plurality of load bearing members to a loading platform including the stacking and locking of said members in various configurations thereupon.
Abstract: A truck trailer having a fixed bed and a liftable bed superposed above said liftable bed wherein the lifting means comprises an hydraulic actuator and the like for lifting rearward portions of the liftable bed and wherein the lifting means for the forward portion of the liftable bed comprises a variable height hitching mechanism adapted to be connected to the "fifth wheel" hitching plate carried by a truck tractor.