Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1987-10-27
1988-10-04
Johnson, Richard J.
Earth working
With drive means for tool or cleaner
Plural driven tools
172 68, 172117, 172610, 172713, A01B 4502, A01B 3306
Patent
active
047750138
ABSTRACT:
A soil tilling machine comprising subsoil tilling members, known as subsoilers, which are drivable via a tractor's PTO around inclined upwardly directed axes. The subsoilers are each primarily constituted by a fowardly and downwardly inclined extending shaft. In front of the tilling members, coulter discs are arranged which cut trenches through which the subsoilers' shafts can move so that the subsoil is intensively worked and broken up while the surface of the soil is hardly disturbed. A roller wheel which controls the depth of the subsoilers is disposed to their rear. The subsoilers are supported by a frame which is hingedly attached to a frame portion having a rectangular trestle for coupling to a tractor's three-point hitch via a spring-loaded parallelogram arrangement which assists in permitting the subsoilers to lift automatically if they encounter obstructions. The subsoilers comprise two part connected shafts with the lower part of each shaft having propeller-like projections and being readily removable from the upper shaft part. The projections work the soil under their respective coulter discs.
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Albright Penrose Lucas
Johnson Richard J.
Miller Robert A.
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