Linkage device for mounting swather header

Details Linkage device for mounting swather header Linkage device for mounting swather header

1995-04-06

1996-07-16

Melius, Terry Lee

Harvesters

Motorized harvester

Including motorized vehicle causing transit of harvester

56 156, 56DIG14, A01D 3314

Patent

active

055355781

ABSTRACT:
A levelling mechanism for use a in lift system of a windrowing machine of the type including a tractor unit and a swather header to permit the use of a grain header which is held suspended above the ground rather than a hay type swather header which normally engages the ground during cutting. The type of lift systems used in some known hay windrowers include a pair of lift assemblies each of which has a single action lift cylinder. The two cylinders are supplied from a common supply line, and because the moving lift components of the two assemblies are individually activated by their respective cylinders the suspended grain header does not remain levelled under certain conditions, such as if there is a build up of greater crop weight at one end relative to the other. The present levelling mechanism includes a torsion bar carried at the front of the tractor unit, the torsion bar having radial arms at opposite ends which are connected to the moving component of the adjacent lift assembly so as to resist movement of the moving components out of unison, thus keeping the head level under normal cutting conditions.

REFERENCES:
patent: 4724661 (1988-02-01), Blakeslee et al.
patent: 5327709 (1994-07-01), Webb
patent: 5337544 (1994-08-01), Lauritsen
patent: 5404695 (1985-04-01), Gemelli
Speedrower Self-Propelled Windrowers 2450 2550 Ford New Holland, copyright 1992.

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