Heavy-duty trip mechanism for ground working implements

Details Heavy-duty trip mechanism for ground working implements Heavy-duty trip mechanism for ground working implements

A - Human Necessities

01

B

97/76

A01B 61/00 (2006.01) A01B 61/04 (2006.01)

Patent

CA 1204957

"HEAVY-DUTY TRIP MECHANISM FOR GROUND WORKING IMPLEMENTS" ABSTRACT OF THE DISCLOSURE Normally, spring loaded trip mechanisms increase in resistance and pressure as they move rearwardly. This device includes a swing arm above the shank with a roller engaging the upper surface of the shank. The tension springs extend from the swing arm to the upper end of the shank arm near the pivot thereof to the frame and are ad- justable so that the initial tripping pressure may be set. Once this pressure is reached, the shank and arm move rear- wardly causing the roller and swing arm also to be forced rearwardly thereby extending the springs. The geometry of the swing arm and springs, together with the shank is such that once the tripping pressure is reached and the shank commences to move rearwardly, the resistance drops rapidly instead of increasing thus letting the arm clear the object without any increase of contact force. Once cleared, the springs return the shank to the working position.

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