Grain cart having a single auger discharge conveyor

1. A grain cart adapted to be pulled by a tow tractor for transferring grain from a combine in a field to an open-top semi-trailer, said cart comprisinga frame supported by a set of wheels and having a front hitch adapted to be pivotally connected to the tractor,a container supported by the said frame for receiving a volume of grain and having an inclined front wall portion, a left side wall and a right side wall,said grain cart having only a single auger conveyor including an inclined lower conveyor section and an upper conveyor section having an outer end portion with a grain discharge spout,each said conveyor section including a power driven auger having a helical flight and rotatable on an axis within a tubular auger housing,said inclined lower conveyor section extending within said container adjacent said inclined front wall portion and having an inlet positioned to receive grain from said container,said upper conveyor section supported by a hinge assembly adjacent a front left corner portion of said container for folding movement on a pivot pin between a retracted stored position and an inclined grain discharge position projecting upwardly, laterally outwardly and forwardly from said container,said upper conveyor section including said outer end portion with said grain discharge spout having a combined length causing said outer end portion with said discharge spout to extend beyond said right side wall of said container when said upper conveyor section moves on said pivot pin between said discharge position and said storage position,said hinge assembly connecting said upper conveyor section to said lower conveyor section and providing for pivoting said upper conveyor section on said pivot pin having a pivot axis extending offset and askewed at an acute angle relative to a plane perpendicular to said axis of said auger in said lower conveyor section and also offset and askewed at an acute angle relative to a plane perpendicular to said axis of said auger in said upper conveyor section,a hydraulic cylinder connected to move said upper conveyor section between said stored position and said grain discharge position,said upper conveyor section of said single auger conveyor in said stored position extending downwardly forward of said inclined front wall portion and at a substantial angle greater than thirty five degrees relative to a horizontal reference plane, andsaid outer end portion with grain discharge spout of said upper conveyor section in said stored position being located below upper surfaces of said wheels and adjacent a vertical reference plane contacting said right side wall of said container.