Patent ID: 7716908

Claim:
A row unit for a row crop harvester comprising: a gearbox having two adjacent and forwardly extending stationary tubes; and first and second stalk rolls having a plurality of longitudinal knives, the stalk rolls being mounted for rotation on and concentric with the stationary tubes; a portion of the gearbox adjacent to the first stalk roll has a first shearing edge and a portion of the gearbox adjacent to the second stalk roll has a second shearing edge, and the first shearing edge is disposed to shear against a mating shearing edge of the first stalk roll and the second shearing edge is disposed to shear against a mating shearing edge on the second stalk roll, and the gearbox first and second shearing edges extend a first distance from the gearbox, whereas gearbox fasteners extend a second distance from the gearbox and being smaller than the first distance.