Combine harvester

A mobile combine harvester comprising:

• a reaping assembly comprising a platform extending horizontally transversely of the direction of movement of said harvester, a cutter bar at the forward edge of said platform, a reel above said cutter bar and rotatable to deliver grain cut by said cutter bar to said platform, and a conveyor at the rear of said platform for conveying cut grain laterally to a delivery point,
• a thrashing assembly receiving cut grain directly from said delivery point of said reaping assembly and comprising a cylindrical casing which is inclined upwardly and rearwardly from said reaping assembly with a forward end connected with said reaping assembly and a rear end elevated, a cylindrical screen in said casing, a rotor rotatable in said cylindrical screen and comprising a cylindrical portion and a continuous vane extending helically around said cylindrical portion and carrying thrashing projections at its periphery, a first radial fan coaxial with said rotor at its rear end for drawing air rearwardly through said casing and discharging it with straw from which grain has been separated at the rear of said casing, a longitudinally extending grain-collecting trough portion in said casing below said cylindrical screen to receive grain, and a screw conveyor in said trough portion for moving said grain rearwardly and upwardly to the rear end of said thrashing assembly, said casing providing a discharge for said fan,
• a cleaning assembly receiving said grain directly from said thrashing assembly comprising a reciprocating screen, a second radial fan for blowing air up through said screen to carry off chaff or other light waste and a collecting pan below said reciprocation screen, and
• a grain handling assembly comprising a grain elevator and transport means for conveying grain from said collecting pan to the lower end of said grain elevator.