wherein said {TAIL ~ means} for moving said knives comprises two guide pins mounted in spaced relationship in said U shaped holder, individual guide parts having on both ends spherical bushings which run on said guide pins and a guide cylinder for moving each of said guide parts back and forth along said guide pins, and wherein {HEAD ~ each} of said knife holders includes two cotter pins by means of which said knife holders can be inserted into holes which are in said individual guide parts 
wherein said { TAIL ~ means } for moving said knives comprises two guide pins mounted in spaced relationship in said U shaped holder , individual guide parts having on both ends spherical bushings which run on said guide pins and a guide cylinder for moving each of said guide parts back and forth along said guide pins , and wherein { HEAD ~ each } of said knife holders includes two cotter pins by means of which said knife holders can be inserted into holes which are in said individual guide parts
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH