Patent ID: 7533837

Claim:
A comminuting device, comprising: a comminution chamber having a bottom wall and a circumferential wall projecting upward from the bottom wall, a rotationally drivable drive shaft extending essentially orthogonal to the bottom wall and at least one comminution element arranged adjacent to the bottom wall and capable of being set in revolving motion about the drive shaft by said shaft, and a plurality of additional comminution elements capable of being set in revolving motion about the drive shaft by said shaft, which are disposed above the comminution element adjacent to the bottom wall, wherein at least a portion of the circumferential wall of the comminution chamber is configured as a grating and wherein the grating is surrounded by an outer jacket, at the lower end of which a catch device is provided for comminuted material, and characterized in that, in the circumferential wall of the comminution chamber an opening adjacent to the bottom wall and openable and closable at will is provided, which can be used as an additional discharge opening.