Abstract: A hitch extends between a towing vehicle such as a tractor, and a trailer includes an upper hitch and a lower hitch together with a releasable latch means holding one against the other. When released, back up of the towing vehicle and, if necessary, applying the brakes of the trailer, tilts the trailer rearwardly and continued backing up tilts the trailer over through nearly 180.degree. for full dumping. When the towing vehicle is moved forwardly the trailer returns to the towing position and the latch means may be re-engaged between the upper and lower hitches.