Abstract: A self-propelled combine has a forward transversely elongated harvesting platform mounted on the forward end of a forwardly and downwardly inclined feeder housing through which the crop is fed to a separating mechanism in the combine body. A plurality of axially transverse paddle type impellers are mounted in the feeder housing and extend between the opposite sides of the housing immediately above the housing floor, the impellers being rotated in the same direction so that the impeller paddles move rearwardly along the floor, whereby the crop material is engaged by successive paddles and moved upwardly and rearwardly along the housing floor to the separating mechanism.