Patent ID: RE40349

Claim:
A device for cutting materials comprising: at least two circular saw blades; a centrally aligned drive shaft that is movable to provide a rotary cutting movement to the at least two circular saw blades, and wherein at least one circular saw blade is mounted displaceable axially on the drive shaft to vary a cutting width of the materials to be cut; disc like support bodies axially displaceable on the drive shaft, wherein at least one circular saw blade is fixedly mounted on each support body, wherein each support body has a nut; guide spindles running parallel to the axis of the drive shaft and engaging through the support bodies, wherein the guide spindles carry out the axial displacement of the circular saw blades, wherein the guide spindles are movable during the circular cutting movement of the circular saw blades on a circular path about the axis of the drive shaft; wherein the guide spindles are fixed axially on the drive shaft and wherein each guide spindle is associated with a respective single one of the support bodies and is screwed into the associated nut of the respective single one of the support bodies; and a hydraulic clamping element commonly fixing the support bodies onto the drive shaft.