초록 ▼

A forwardly folding tillage implement carries a number of ground engaging tools on a tool gang frame disposed to the rear of a carrier frame. A rockshaft is disposed between the carrier frame and the tool gang frame and is movable between four rotated positions about two axes of rotation. A control

A forwardly folding tillage implement carries a number of ground engaging tools on a tool gang frame disposed to the rear of a carrier frame. A rockshaft is disposed between the carrier frame and the tool gang frame and is movable between four rotated positions about two axes of rotation. A control mechanism controls the relative angular position of the rockshaft. A support mechanism is disposed rearwardly of the axes of rotation to support the rear of the tool gang frame above the ground in the field working position. An abutment member restrains the relative rotation between the rockshaft and the tool gang frame to fully support the tool gang frame on the rockshaft upon rotation of the rockshaft. A spring mechanism is provided which interconnects the rockshaft and the first tool frame to exert a spring force on the tillage tools supported on the first tool frame to urge the tools into the ground. The spring mechanism is supported on a support arm extending rearwardly from the rockshaft.

대표청구항 ▼

1. A farm implement comprising:a primary frame adapted for movement across a field, said primary frame including a rockshaft pivotable about a first horizontal axis; a first tool frame pivotally connected at a forward end to said rockshaft for vertical movement about a second horizontal axis carried

1. A farm implement comprising:a primary frame adapted for movement across a field, said primary frame including a rockshaft pivotable about a first horizontal axis; a first tool frame pivotally connected at a forward end to said rockshaft for vertical movement about a second horizontal axis carried by said rockshaft, said first tool frame being operable to carry ground engaging tools for engagement with the field and being supported at a rearward end by a support apparatus; and a spring mechanism interconnecting said rockshaft and said first tool frame to exert spring force on said first tool frame for urging said ground engaging tools carried by said first tool frame toward said field.