Patent ID: 6487835
Filing Date: 2002-12-03
Classification: A01D

Abstract:
A disc cutterbar having a support member with a cutterhead affixed thereto, said cutterhead including a disc member carrying a knife to sever standing crop material, said disc member having a mounting hub provided with a central mounting hole; said mounting hub comprised of an inner hub fitted within an outer hub, said disc member drivingly connected to said outer hub; a drive including a drive shaft received in said mounting hole for rotation of said disc member about an upright axis; said inner hub being circular in plan view and coaxially affixed to said drive shaft, said outer hub has a central circular opening into which said inner hub is fitted; a shear device operable between said drive shaft and said disc member such that torque is transferred from said drive shaft through said mounting hub and shear device to said disc member; and a brake associated with said shear device whereby upon failure of said shear device said brake stops the rotation of said disc member.