A turret assembly for a cutting head has a glass-cutting wheel and a plastic-cutting blade portion disposed at spaced peripheral locations. Rotation of the turret body brings the cutting elements into their operative positions, and cooperating detent elements ensure reliable indexing of the turret and...http://www.google.fr/patents/US5168788?utm_source=gb-gplus-shareBrevet US5168788 - Cutting head turret assembly
