05255617 is referenced by 62 patents and cites 9 patents.

The ridge preparation tool is adapted to be attached to a seed planter directly ahead of the trench-forming structure of the planter so as to skim off the crest of the ridge for the production of a clean, relatively narrow strip of prepared soil in which the trench-forming structure can operate effectively. The free-wheeling skimming disc of the tool is held at an oblique angle to the centerline of the planter and may be adjusted to increase or decrease the extent of side throw of the skimmed off materials by selectively raising or lowering an outwardly bent mounting arm that holds disc at its oblique angle. Raising or lowering the angled mounting arm causes the disc to cock inwardly or outwardly while maintaining the same oblique angle. The throw-adjusted disc can be returned to the same skimming depth by appropriate manipulation of a vertical adjustment unit associated with the tool.

Title
Ridge preparation tool for seed planting equipment
Application Number
7/837032
Publication Number
5255617
Application Date
February 14, 1992
Publication Date
October 26, 1993
Inventor
Patrick G Lohmeier
Garden City
KS, US
Robert A Williams
Garden City
KS, US
Agent
Hovey Williams Timmons & Collins
Assignee
Acra Plant
KS, US
IPC
A01B 5/04
A01C 5/06
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