Earth working – Towed scraper with ground support wheels
Patent
1991-11-18
1993-05-25
Taylor, Dennis L.
Earth working
Towed scraper with ground support wheels
172311, 172481, 1726845, A01B 7304, E02F 376
Patent
active
052131653
ABSTRACT:
A multi-section, foldable land plane is foldable between a relatively narrow, transportable position, and a wider, deployed position for leveling field irregularities. A central, wheeled frame is adapted to be drawn by a conventional tractor. The frame, constructed of a network of tubular steel members, supports a pair of lateral wings which can be selectively folded and unfolded over the central frame. Folding of the wings is controlled by a system of hydraulic cylinders. The hydraulic cylinders are coupled to pivotal cam arms that control upward and outward rotation of the wings relative to the frame. A deflection compensation system insures proper wing movement during movements. An automatically actuated locking system prevents undesired deflection of the wings during operation. The locking system is activated by a second pair of hydraulic cylinders that control a master locking position that is linked to remote, slave locking positions by an elongated synchronizer. A plurality of rigid plane blades cooperate to define a soil flow pathway beneath the frame. Each of the blades is independently adjustable for height and pre-tension, accommodating the condition of the field. Soil scraped from elevated areas is channeled backwards along the blades and subsequently deposited into depressed areas of the field and compacted by the blades.
REFERENCES:
patent: Re31209 (1983-04-01), Anderson
patent: 897905 (1908-09-01), Kinkade
patent: 1166197 (1915-12-01), Elsey
patent: 1385789 (1921-07-01), Miller
patent: 1876867 (1932-09-01), Dean
patent: 2142262 (1939-01-01), Beckham et al.
patent: 2972385 (1961-02-01), Walberg
patent: 3692121 (1972-09-01), Kenney
patent: 3814191 (1974-06-01), Tilbury
patent: 4236586 (1980-12-01), Shader et al.
patent: 4415043 (1983-11-01), Hadler et al.
Brandt Edward O.
Burks James E.
Dunn Neil C.
Brandt Manufacturing Co., Inc.
Carver Stephen D.
Taylor Dennis L.
Thompson Jeffrey L.
LandOfFree
Folding land plane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Folding land plane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Folding land plane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-891865