Header platform

In a harvester having a header platform, a knife assembly extending across the front of the platform for severing a crop from its stalks, a pair of co-axial augers extending across the rear of the platform for transporting the crop in a direction transverse to the direction of harvester travel, and respective drive means coupled both to the knife and to the auger,

• improvements comprising a sweeper frame having a pair of spaced parallel frame arms, a respective channel shaped guide track on each frame arm, securing means securing the sweeper frame to the harvester with the frame arms extending forwardly towards, but above, the knife assembly, a crank shaft journalled for rotation in bearings on the front ends of the frame arms,
• a sweeper assembly comprising a finger frame, a plurality of sweeper fingers, means for securing the sweeper fingers to the front end of the finger frame to depend therefrom but terminate at a higher elevation than the knife assembly, rollers on the rear end of the finger frame engaging and guided for fore and aft movement by the channel shaped guide tracks, crank shaft bearings intermediate the ends of the finger frame engaging the crank portions of the crank shaft,
• and crank drive means coupled to the crank shaft, so constructed and arranged that actuation of the crank drive means causes the sweeper fingers to lower, move rearwardly over the platform, and rise to thereby be effective in moving a crop rearwardly over the platform.