Agricultural implement with down-force control

Details Agricultural implement with down-force control Agricultural implement with down-force control

1997-07-10

2000-04-04

Novosad, Christopher J.

Earth working

Mast type hitch

With auxiliary vertical adjustment

172637, A01B 59043

Patent

active

060449160

ABSTRACT:
Down-force control is provided by a top-link, which presses down the rear end of a tool-bar carrying multiple rows of seeder tools. The height of the tool bar is set front and rear during operation. The top-link includes a hydraulic ram. The ram is supplied with pressure from a pressure-reducing-relieving valve, whereby the downward-force on the rear of the tool-bar remains constant during operation. The tool bar has side wings which are pressed down by a pressure that is regulated by the same valve. The system allows the seeder to maintain constant implantation depth, even over uneven ground.

REFERENCES:
patent: 4558881 (1985-12-01), Mantevfel
patent: 4817730 (1989-04-01), Winter
patent: 4858698 (1989-08-01), Williamson et al.
patent: 5497837 (1996-03-01), Kehrney
patent: 5730227 (1998-03-01), Hund
Fasse's Bearlink II . . . 33 Farm Show; Date Unknown.
Accord Pneumatic Seed Drills . . . (Brochure); Date Unknown.

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