Earth working – Diverse tools – Including implement alternating for right or left hand...
Patent
1996-01-16
1998-02-03
Melius, Terry Lee
Earth working
Diverse tools
Including implement alternating for right or left hand...
172204, A01B 1700
Patent
active
057134219
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a combination of a reversible plough and a seed preparation device, said combination being adapted to be fully mounted or semi-mounted on a rear lifting device of a propelling vehicle.
The invention has been developed primarily in connection with a reversible plough/packer combination (an integrated combination) which is adapted to be fully mounted on the usual three point rear lifting hitch at the rear of a tractor, but it should be understood that the invention is not restricted to such a combination. The invention therefore is intended to include the possibility of use of: (1) other types of seed preparation device than a "packer" e.g. a set of harrows; (2) a semi-mounted combination; (3) mounting at the rear of a suitable propelling vehicle other than a tractor; (4) the integration of a seed distribution device; (5) any combination of items 1 to 4.
A combination of a reversible plough/packer is known e.g. from a fully mounted combination shown in Swedish Patent Application No 9200744-2, or a semi-mounted combination from PCT/GB93/00492, and in which the packer remains "integrated" with the reversible plough in the sense that it remains coupled with it during each reversal of the plough bodies (which takes place after each ploughing pass along a field prior to a return pass in an opposite direction adjacent to the first pass). The packer is able to move to a suitable position to cooperate with each set of plough bodies upon each reversal of the plough bodies.
A major factor which contributes to the ability of the packer to move between right side ploughing and left side ploughing with respect to the tractor comprises a specially designed swivel mounting (see each case for more detail) which supports a packer arm on which the packer wheels are mounted (usually sets of vertical packer wheels or discs) so that the packer arm is able to pivot about a substantially horizontal swivel axis provided by the mounting so that the packer wheels remain in a substantially horizontal plane while the main plough beam on which the reversible plough bodies are mounted carries out orbital movement about a substantially horizontal axis provided by the usual headstock. (The construction and operation of both fully mounted and semi-mounted reversible ploughs is well known to those skilled in the art and is therefore not described or illustrated in detail herein).
In existing designs of integrated plough/packer combinations, the packer is mounted behind the plough bodies with respect to the direction of travel and in a partially lateral overlap arrangement, whereby the packer carries out seed bed preparation on part only of the soil turned over by some of the plough bodies in any one pass, while simultaneously carrying out seed bed preparation on part of the soil turned-over by the plough bodies during a previous pass in a reverse direction. Therefore, the packer forms a suitable seed bed on the ploughed soil by carrying out approximately 50% of its action immediately behind the soil ploughed by the plough bodies in one pass while simultaneously carrying out seed bed preparation on approximately the remaining 50% of the ploughed but unpacked soil ploughed during the previous pass of the combination.
The integrated plough/packer combination which is the subject of each earlier patent application represents a significant innovation in the art, giving rise to major technical advantage. However, because the packer is laterally off-set partly relative to the plough bodies, in either ploughing position, it can cause difficulties in carrying out the first ploughing pass along the edge of a field, and especially when there is a hedge, fence, or other obstacle defining the edge of the field. This difficulty arises because of the lateral overlap of the packer with respect to the plough bodies.
In one aspect, therefore, the invention seeks to provide an integrated reversible plough/soil preparation device combination, which provides independent adjustment of the plough frame, and the soil preparation device, wh
REFERENCES:
patent: 2796816 (1957-06-01), Gray
patent: 3357500 (1967-12-01), Harris
patent: 3523584 (1970-08-01), Godbersen
Kverneland Klepp AS
Melius Terry Lee
Novosad Christopher J.
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