Trip assembly

Details Trip assembly Trip assembly

1990-08-02

1991-12-17

Reese, Randolph A.

Earth working

Overload shifting

Against spring return device

111151, 172261, 74 972, A01B 6104

Patent

active

050727931

ABSTRACT:
A trip assembly for a ground-working implement includes a rigid toggle member and a spring toggle member that are pinned, respectively, at a first point to a ground-engaging tool and at a second point to a frame. The rigid toggle member and the spring toggle member are pinned together at a third point that is a small distance vertically below a line extending between the first two points. A fulcrum from the rigid toggle member is in contact with the top of the spring toggle member at a central position. An obstruction force transmitted to the ground-engaging tool is transmitted to flex the spring toggle member vertically upwardly at the central position. As the spring toggle member flexes vertically upwardly, the third point moves upwardly through the small distance. Once the third point crosses the line between the first two points, the trip assembly trips and moves the ground-engaging tool to a vertically upwardly removed tripped position. The third point crosses the line once the obstruction force exceeds a trip load. The disclosed trip assembly is predictable in that it trips at relatively constant trip loads, regardless of the speed at which the ground-working implement is being moved through this ground.

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