Two-wheeled scraper

Claim 1

IN A SCRAPER FOR ATTACHMENT TO A TRACTOR HAVING A HITCH AND A POWER TAKE-OFF, THE COMBINATION OF, A FRAME WITH AN OPEN FRONT DIRT COLLECTING BOX ON SAID FRAME, SAID FRAME HAVING SIDE MEMBERS AND SAID BOX HAVING A REAR END AND A CROSS MEMBER AT ITS FORWARD END, WHEEL SUPPORTS FOR SAID FRAME, MEANS CARRIED BY SAID FRAME PIVOTALLY MOUNTING SAID FRAME FOR TILTING MOVEMENT IN A VERTICAL PLANE, SAID BOX HAVING SIDE WALLS AND A FIXED BOTTOM PLATE BETWEEN THE SIDE WALLS SPACED FROM THE REAR END OF THE BOX LEAVING AN OPENING IN THE BOX REARWARDLY OF SAID PLATE, A DOOR FOR CLOSING SAID OPENING, MEANS SWINGINGLY MOUNTING SAID DOOR ON SAID SIDE WALLS OF THE BOX, A SCRAPER BLADE EXTENDING TRANSVERSELY OF THE DIRT COLLECTING BOX ADJACENT THE FORWARD EDGE OF SAID BOTTOM PLATE, A CONVEYOR MOUNTED ON SAID FRAME FOR MOVING DIRT FROM SAID SCRAPER TO SAID DIRT COLLECTING BOX, WING MEMBERS SECURED TO THE OUTER ENDS OF SAID CROSS MEMBER AND SAID SIDE WALLS FORWARDLY OF SAID BLADE, SAID WING MEMBERS HAVING A MOLDBOARD AND A CUTTING BLADE ON THE LOWER PORTION THEREOF EXTENDING AT AN ANGLE FORWARDLY AT THEIR OUTER ENDS, MEANS FOR ADJUSTING THE VERTICAL POSITION OF SAID CUTTING BLADE WITH RESPECT TO THE SCRAPER BLADE, FLUID OPERATED MEANS FOR TILTING SAID FRAME TO LOWER SAID SCRAPER BLADE TO DIGGING POSITION AND TO RAISE THE SAME TO DIRT TRANSPORTING POSITION, AND FLUID OPERATED MEANS FOR SWINGING SAID DOOR TO OPEN AND CLOSE THE SAID DOOR OPENING IN THE BOTTOM OF SAID BOX, MEANS OPERABLE BY THE POWER TAKE-OFF OF THE TRACTOR FOR ROTATING SAID CONVEYOR.