Adjustment of the hitch arm of a pull-type crop harvesting...

Details Adjustment of the hitch arm of a pull-type crop harvesting... Adjustment of the hitch arm of a pull-type crop harvesting...

A - Human Necessities

01

B

A01B 59/042 (2006.01) A01D 47/00 (2006.01)

Patent

CA 2513605

A pull-type crop harvesting machine has a header carried on a frame mounted an ground wheels with a hitch arm extending from the frame over the header to a hitch coupling of a tractor. The hitch arm is mounted for pivotal movement about a generally upright axis such that in a first position the tractor tows the frame in echelon to one side and in a second position the tractor tows the frame in echelon. The movement is actuated by a hydraulic cylinder and stopped at one end of the movement by the piston with a rod coupling being adjustably mounted on the rod to adjust the end position. At the other end of the movement, the position is defined by a stop member mounted an the piston rod and adjustable relative thereto. Each end of the cylinder includes a cushion effect by using separate orifices for the fluid ports which slow fluid flow as the piston approaches the ends of the cylinder.

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