Trailer van and conveyor

Claim 1

IN COMBINATION, A TRAILER FOR HAULING SEPARATE ARTICLES OF GENERAL CARGO AND A CONVEYOR SYSTEM SECURED LONGITUDINALLY IN THE TRAILER, SAID TRAILER INCLUDING SIDE WALLS AND A MAIN FLOOR TO SUPPORT A LOAD, SAID MAIN FLOOR HAVING A LONGITUDINALLY EXTENDING OPENING SUBSTANTIALLY ALONG THE LENGTH OF THE FLOOR AND TERMINATING ADJACENT THE REAR OF THE TRAILER, A SUB-FLOOR UNDER THE OPENING AND SIDE WALLS SUPPORTED BY THE TRAILER AND DEFINING A LONGITUDINALLY EXTENDING RECEPTACLE, A PLURALITY OF SEPARATE HINGEDLY MOUNTED DOORS ALONG ONE LONGITUDINAL EDGE OF THE OPENING, SAID DOORS EACH BEING SIZED TO OVERLAY A PORTION OF THE OPENING WHEN THE VEHICLE IS LOADED AND ADAPTED TO BE OPENED OR CLOSED IN SEQUENCE TO PROGRESSIVELY EXPOSE OR CLOSE THE RECEPTACLE ON LOADING OR UNLOADING OPERATION, SAID CONVEYOR SYSTEM INCLUDING, A CONVEYOR MEANS IN THE RECEPTACLE AND INCLUDING A FRAME HAVING A CONTINUOUS CONVEYOR BASE EXTENDING FROM A POINT ADJACENT ONE END OF THE RECEPTACLE TO THE OTHER END OF THE RECEPTACLE, A DRIVE DRUM ADJACENT ONE END OF THE RECEPTACLE AND A DRIVEN DRUM ADJACENT THE OTHER END OF THE RECEPTACLE, SAID DRUMS HAVING PARALLEL SHAFTS, AND AN ENDLESS BELT SPANNING THE DRUMS AND SUPPORTED ALONG THE LENGTH THEREOF BY SAID BASE, SAID BASE BEING DISPOSED SLIGHTLY BELOW THE MAIN PLANE OF SAID TRAILER FLOOR, TENSIONING MEANS CARRIED ON THE FRAME TO MOVE THE DRIVEN