| 摘要 |
The invention concerns an apparatus characterised in that the toothed-shank mechanism (8) comprises an arm (8a) articulated to counter elastic return means (12) with respect to the cutter bar (7), said arm (8a) having a curvilinear shape with a plurality of teeth (8d) capable of co-operating with the rack means (9) in an elastically floating assembly, and defining an angulation ( alpha ) defined by the clutch engagement point, the cutter bar axis and the cutter cutting zone along YOY which ranges between 160 and 170 DEG . |
