Patent ID: 7559495

Claim:
Apparatus for stabilizing the rotational speed of a tub grinder and to act to prevent jamming of the tub grinder, comprising: (a) a tub grinder; a drive shaft having an input end that is drivingly connected to and rotated by an engine of the tub grinder and an output end; (b) a hammermill mounted on the drive shaft between the input end and the output end for rotation by the engine and positioned inside the radial confines of the tub; (c) a high inertia flywheel attached to either the input or output end of the drive shaft of the hammermill and positioned outside the radial confines of the tub and having an outer periphery that rotates above the lower confines of the tub; (d) means for spinning the flywheel to a desired speed; and (e) control means for adjusting the connection between the spinning means and the flywheel.