04781129 is referenced by 18 patents and cites 38 patents.

A debris and soil shaver for no till farming is disclosed which has a disk-like member which floats up and down as it is pulled across the ground surface. The disk is angled with respect to a predetermined direction of travel of an agricultural apparatus which is adapted to pull the shaver. The disk is rotatably mounted to a first support member about a central transverse disk axis. The first support member is pivotally mounted to a vertical second support member about a pivot axis. The pivot axis and central transverse axis are angled with respect to one another. The second support member is clamped to the agricultural apparatus which pulls the shaver. With such a construction, pivotal movement of the first support member about the pivot axis causes the angle of the disk relative to the ground surface to change. The angle adjusting prevents the disk from engaging too much soil and allows the disk to seek a path of least resistance as it rolls across a planting field. The blade angle is also changeable by raising and lowering the second support member relative to the agricultural apparatus to vary the elevation of the pivot axis above the ground. A plurality of shavers can be mounted to tool bars to cooperatively neatly stack residue between seed rows.

Title
Debris and soil shaver
Application Number
6/922897
Publication Number
4781129
Application Date
October 24, 1986
Publication Date
November 1, 1988
Inventor
Guy J Swanson
Spokane
WA, US
Morton C Swanson
Palouse
WA, US
Agent
Wells St John & Roberts
Assignee
Swanson Spray and Manufacturing
WA, US
IPC
A01B 35/28
A01C 5/06
View Original Source