| 摘要 |
A soil working machine comprises two interconnected soil working members. Each working member comprises a support that is preferably resilient and a lower working element. Deflection of one working member results in an opposite deflection of the other, but the orientation of the working elements is preferably maintained by a control arm. Levers pivoted to the frame and associated with the supports are interconnected by a rigid coupling. Alternatively, the supports can be attached to brackets which are pivoted to the frame and levers or parallelogram linkages interconnected to the brackets are connected by a rigid coupling.
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