Material unloader with end gate

Claim 1

ON A MATERIAL UNLOADER INCLUDING A MATERIAL CONTAINER HAVING A PAIR OF UPRIGHT SIDEWALLS INTERCONNECTED BY A FLOOR AT THEIR LOWER EDGED AN D OPEN AT ONE END FOR PERMITTING DISCHARGE OF MATERIAL, THE FLOOR HAVING A TRANSVERSE EDGE AT THE OPEN END, A FLOOR CONVEYOR MEANS FOR MOVING MATERIAL TO THE OPEN REAR END, AND A MATERIAL DISTRIBUTING ROTOR AT THE OPEN END ABOVE THE FLOOR, THE IMPROVEMENT COMPRISING: AN END GATE ATTACHMENT REARWARD OF THE ROTOR INCLUDING A TRANSVERSE UPRIGHT PANEL HAVING A LOWER EDGE ADJACENT THE REAR EDGE OF THE FLOOR AND AN UPPER EDGE AT THE LEVEL OF THE ROTOR AND UPRIGHT SIDE STRUCTURE DISPOSED ADJACENT THE RESPECTIVE SIDEWALLS CONNECTED TO OPPOSITE ENDS OF THE UPRIGHT PANEL; MEANS PIVOTALLY MOUNTING THE SIDE STRUCTURES TO THE SIDEWALLS TO PERMIT THE END GATE ATTACHMENT TO SWING BETWEEN A FIRST POSITION WHEREBY SAID LOWER EDGE IS CLOSELY ADJACENT THE EDGE OF THE FLOOR AND MATERIAL MAY BE DISCHARGED OVER THE UPPER EDGE OF THE ROTOR, AND THE SECOND POSITION IN WHICH THE LOWER EDGE IS SPACED FROM THE FLOOR EDGE TO PROVIDE AN OPEN GAPL TO PERMIT MATERIAL TO PASS.