04483401 is referenced by 20 patents and cites 19 patents.

A double disc attachment for farm implements operating to present a debris-cleared area ahead of the furrow opener of the implement, has a peripherally notched disc with one of the discs spaced from and leading the other. Each disc is rotatably carried by its own independent, rearwardly-extending bracket, and each bracket has its own independent, vertically extensible support, with the supports and the brackets laterally spaced. In two embodiments the supports are disposed entirely behind the discs, and in all forms each support is adjustably secured to its own independent means for separate mounting of its disc unit on the implement. The mounts are also laterally spaced, and in one form the discs are located between the brackets.

Title
Trash clearing assembly for farm implements
Application Number
6/429799
Publication Number
4483401
Application Date
September 30, 1982
Publication Date
November 20, 1984
Inventor
Forrest E Robertson
Garden City
KS, US
Agent
Schmidt Johnson Hovey & Williams
Assignee
Acra Plant
KS, US
IPC
A01C 5/06
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