Earth working – Alternating for right or left hand operation – Tool shifted for opposite throw
Patent
1990-08-02
1991-06-18
Corbin, David H.
Earth working
Alternating for right or left hand operation
Tool shifted for opposite throw
172439, 172459, 172666, 172772, A01B 340
Patent
active
050242814
ABSTRACT:
A reversible moldboard plow has a plow carrying beam swingably mounted at the rear crossbar of a frame which carries trunnion mounted cylinders connected to the beam for moving the beam, the front of the frame carrying hitch pins for connection to a tractor hitch, the hitch pins being vertically movable in alternate relation in order to tilt the frame and the beam with the moldboards supported thereon. The hitch pins may be moved by independent cylinders and pistons or, alternately, by the movement of a transverse hitch bar on which they are mounted.
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"Reversible Plow", Photographs, Mfg. by Harrell Equip. Co., Inc., Vada, Georgia, sold prior to Oct. 1989.
Corbin David H.
Long Manufacturing N.C., Inc.
Thompson Jeffrey L.
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