Header with flexible crop cutting knife

Details Header with flexible crop cutting knife Header with flexible crop cutting knife

A - Human Necessities

01

D

A01D 47/00 (2006.01) A01D 34/28 (2006.01) A01D 41/14 (2006.01)

Patent

CA 2307176

A crop harvesting header includes a frame having a main transverse beam and a plurality of support arms arranged at spaced positions across the width of the beam for supporting the table and a flexible cutter bar. The support arms include two outer rigid support arms arranged at outer ends of the beam for maintaining the ends of the cutter bar rigid and parallel to the beam. In addition, the support arms include four inner flexible support arms spaced between the outer support arms for supporting an intermediate portion of the cutter bar to allow flexible movement upwardly and downwardly of the cutter bar such that a center portion of the cutter bar between the ends of the cutter bar is free to move upwardly and downwardly in response to forces thereon. The flexible support arms float on a counterbalance arrangement. The header frame is floated to allow independent upward and downward movement of the ends which co-operates with a limited flexing of the cutter bar only over a distance of the order of four inches total movement to keep the cutter bar close to the ground. The reel is mounted on two outer arms and a center arm where the center arm is allowed to float in response to cutter bar movement to keep the fingers close to the knife.

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