Bottom dump trailer structure

Claim 1

IN A LOAD HAULING TRAILER STRUCTURE, THE COMBINATION COMPRISING: (A) AN ELONGATED LOAD SUPPORTING FRAME; (B) FORWARD AND REARWARD AND REARWARD OPEN-BOTTOMED RECEPTACLES SUPPORTED BY SAID FRAME, SAID FORWARD RECEPTACLE BEING PERIPHERALLY DEFINED BY OPPOSED SIDE WALLS, A FRONT END WALL AND A REAR END WALL, SAID REARWARD RECEPTACLE BEING PERIPHERALLY DEFINED BY OPPOSED SIDE WALLS IN RESPECTIVE ALIGNMENT WITH SAID OPPOSED SIDE WALLS OF SAID FORWARD RECEPTACLE, A REAR WALL AND A FRONT END WALL HAVING ITS UPPER EDGE CONTIGUOUS WITH THE UPPER EDGE OF SAID REAR END WALL OF SAID FORWARD RECEPTACLE, THE MAJOR PORTION OF EACH OF SAID SIDE, REAR AND FRONT WALLS SLOPING INWARDLY AND THE FRONT WALL OF SAID REARWARD RECEPTACLE FORMING WITH THE REAR WALL OF SAID FORWARD RECEPTACLE FORMING WITH SAID FORWARD AND REARWARD RECEPTACLES AN INVERTEDEEN V-SHAPED CAVITY; (D) A PAIR OF OUTWARDLY SWINGING OPPOSED GATES PIVOTALLY MOUNTED ON SAID RECEPTACLES AND EXTENDING LONGITUDINALLY BENEATH SAID ELONGATED FRAME AND SAID INVERTED V-SHAPED CAVITY, SAID GATES ADAPTED TO FORM CLOSURES FOR THE BOTTOMS OF BOTH SAID RECEPTACLES; (D) A FREE FLOATING FLUID PRESSURE CYLINDER AND PISTON MEANS MOUNTED IN SAID CAVITY AND OPERATIVELY CONNECTED AT ONE END TO ONE OF SAID GATES AND AT THE