Agricultural rig pressure adjustment with overcenter toggle

Details Agricultural rig pressure adjustment with overcenter toggle Agricultural rig pressure adjustment with overcenter toggle

A - Human Necessities

01

B

A01B 63/24 (2006.01)

Patent

CA 2183172

Down pressure-structure for providing an adjustable down force on a rig of row crop implement such as a cultivator includes an overcenter toggle connected to the rig for pivoting about a toggle axis between a first and second positions. The toggle has a protrusion that contacts the edge of a rig plate at two different locations corresponding to a light and a heavy down pressure position. A down pressure spring is tensioned between the frame and the toggle and maintains the toggle in a selected one of two overcenter positions corresponding to the two different spring tension positions. A hex projection on the toggle receives a conventional wrench for moving the toggle between the first and second positions. A second toggle and down pressure spring combination provide additional spring adjustments so that at a numerous easily determinable down pressure settings are available.

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