Implement height control

Details Implement height control Implement height control

1991-04-24

1992-10-20

Melius, Terry Lee

Harvesters

Motorized harvester

With condition-responsive operation

56 151, 56DIG15, 172 45, A01D 4700, A01D 7528

Patent

active

051559846

ABSTRACT:
An implement, such as a cutterbar on an agricultural harvesting machine, is automatically position-controlled to maintain a reference position relative to the ground surface. The implement is mounted so that it may be raised, lowered or tilted and the control is such that tilting movements are preceded by, or are carried out concurrently with, a raising or lowering movement when one end of the implement is at the reference position and the other end is between the reference position and the ground surface. Manually operated UP and DOWN switches not only control up and down movements of the implement but also inhibit and restore automatic control of implement positioning. A set/reset switch enables manual selection of a predetermined reference position or the selection of the present implement position as the reference position.

REFERENCES:
patent: 4228636 (1980-10-01), Homburg
patent: 4414792 (1983-11-01), Bettencourt et al.
patent: 4507910 (1985-04-01), Thornley et al.
patent: 4569037 (1986-02-01), Seiferling
patent: 4573124 (1986-02-01), Seiferling
patent: 4641490 (1987-02-01), Wynn et al.
patent: 4663712 (1987-05-01), Kishida
patent: 4896486 (1990-01-01), Lundahl et al.
patent: 4918608 (1990-04-01), Middleton et al.

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