Earth working – Alternating for right or left hand operation – Tool shifted for opposite throw
Patent
1991-11-25
1993-04-06
Reese, Randolph A.
Earth working
Alternating for right or left hand operation
Tool shifted for opposite throw
172760, A01B 328
Patent
active
051995034
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to tillage implements, and in particular, to plows for moldboard plowing with the furrow slice cast aside both to the left and to the right during shuttle movement of the plow.
A plow in accordance with the invention may be attached to a tractor in combining implements even with a large plow width.
BACKGROUND OF THE INVENTION
Prior art plows used for the same purpose differ in structure, and each type has certain advantages. However, the interbody clearance between adjacent plow bodies in all such plows, which determines the plow length, is in excess of an admissible value which can ensure minimum overall length of the plow without disrupting normal operation of the plow, in particular, without interfering with the furrow slice passage between the plow bodies.
Known in the art is a widely used two-way plow comprising a carrier frame supporting a frame rotatable about the longitudinal axis which carries left-handed and right-handed bodies and moldboard jointers as well as colters and landsides attached to the bodies.
Therefore, the two-way plow differs from a normal hiller plow for carrying out a one-sided (normally, right-handed) dumping of furrow slices only in the provision of a rotatable frame and a double set of working members, the design and relative position of which determine the length of the two-way plow. The working members of the two-way plow correspond to the design and relative position of the working members of a hiller plow in which the interbody clearance is determined by the presence of a moldboard jointer throwing the cut top part of the furrow slice into an open furrow which is formed by the body positioned ahead thereof.
The need for a double set of working members in the two-way plow is a disadvantage, and certain technical solutions were sought for eliminating this disadvantage.
In plows which are free this disadvantage of the two-way plow is overcome in that the carrier frame supports a horizontally rotatable frame carrying plow bodies attached thereto, each plow body ensuring both left- and right-handed dumping of the furrow slice.
Known in the art are two types of plow bodies for such plows.
A body of the first type comprises an integral left- and right-handed moldboard having a pair of shares whose front tips are conjugated or separated by land edges. Depending on the desired direction of dumping of the furrow slice, the share is mounted to the left or to the right with respect to a leg of the body by means of a pivot joint having its pivot pin disposed at the intersection of the vertical plane of symmetry of the leg and the plane of symmetry of the moldboard.
This type of plow body is deficient due to enlarged linear dimensions of the moldboards in the vertical direction so that it is difficult to use such plow bodies for a large plow width. In addition, the configuration of the moldboards (cylindrical or conical) cannot be adapted for operation under all soil conditions.
It is preferred to have another type of plow body in the form of a composite body having front and rear symmetrical parts mounted for rotation for left-handed and right-handed dumping of the furrow slice.
Thus known in the art is a plow body having a leg in the front part thereof which supports front parts of the left- and right-handed moldboards with shares, which are mounted in the working position in a mirror-like relation relative to a transverse vertical plane drawn through the axis of rotation of the leg, the rear part of the body being configured as a freely rotatable concave cylinder.
However, the rear part of this plow body which is made shorter to reduce the interbody clearance in the plow, hence to reduce the plow length, results in a poor turning of the furrow slice, i.e. in a lower quality of plowing during operation of the plow.
Also known in the art is a plow body having a leg in its front part which supports a common left- and right-handed front part of a moldboard with a share which is symmetrical with respect to a plane extending through the axis of ro
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Ashakova Natalia I.
Kuzmich Leonid S.
Matsepuro Vadim M.
Mengo Valery O.
Semenov Vladimir A.
Matsepuro Vadim Mikhailovich
Reese Randolph A.
Warnick Spencer
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