Abstract: Crop divider mechanism for attachment to a knockdown bar of an agricultural harvesting or conditioning machine and comprising a pair of similar interchangeable left-hand and right-hand rod members bent into substantially trapezoidal shape with parallel opposite long and short sides and intervening sides sloping from said long side to said short side, pairs of bracket members attachable respectively in spaced relation along opposite end portions of said knockdown bar and each pair pivotally receiving one of said intermediate sides of said rod members, similar positioning plates respectively fixed to one bracket of each pair thereof and having several spaced holes to receive selectively one end of a positioning pin selectively to support said rod members in upstanding inoperative position or forwardly extending operative position, and supplemental flat links connected to a second plate adjacent each positioning plate in positions to engage said knockdown bar in a manner to hold said rod members no lower than in

Abstract: A forage harvester having a rotatable cutter head co-acting with a shear bar is provided with means to rotate the cutter head stepwise for inspection of the knives of the cutter head without manually engaging the same. The means for advancing the cutter head also provide tension applied against the knives of the cutter head incident to the same being ground by a rotatable grinding wheel to re-bevel the surfaces of the knives adjacent the cutting edges thereof for purposes of producing effective operating engagement of said grinding wheel with said knives during such re-bevelling of the same.

Abstract: An axial flow combine is provided with substantially horizontal rotor units which co-act with concaves that are complementary to the lower portions of said rotor units and are parallel thereto. The front end of the concaves normally are supported by bracket members which are not readily disconnectable from the front end of said concaves. The present invention includes brackets which are readily disconnectable from the front end of said concaves and a support therefor, whereby the concaves may be readily removed from the forward end of the threshing and separating chamber under circumstances where replacement or interchange of the concaves are desired.