Disc harrow wheel lock-down with depth control adjustment means

Details Disc harrow wheel lock-down with depth control adjustment means Disc harrow wheel lock-down with depth control adjustment means

A - Human Necessities

01

B

97/31

A01B 5/04 (2006.01) A01B 63/22 (2006.01) B60G 17/005 (2006.01)

Patent

CA 1061162

Abstract of the Disclosure An apparatus for positively locking the wheels of a disc in transport and depth control positions. The disc harrow comprises a frame having disc sections secured thereto. A transversely ex- tending axle is secured to the frame and has ground engaging wheels at the opposite ends thereof which control the discing depth and transport height. A hydraulic cylinder is secured at its forward base end to the frame and has the rearward end of its cylinder rod pivotally connected to the axle to raise and lower the wheels with respect to the frame. A spacer assembly slidably embraces the cylinder rod. A cylinder stroke lock assembly is pivotally connec- ted, at its rearward end, to the rearward end of the cylinder rod for pivotal movement between a first horizontal position and a second upstanding position. The spacer assembly comprises a spacer tube and spacing washers. The spacing washers may be selectively moved with respect to the cylinder stroke lock assembly to permit depth control adjustment. The cylinder stroke lock assembly, when the spacer assembly is positioned rearwardly of the forward end of the lock assembly, permits the cylinder rod to freely slidably move inwardly into the hydraulic cylinder. The forward end of the cylin- der stroke lock assembly is adapted to enrage the spacer assembly to limit the inward movement of the cylinder rod into the cylinder when the cylinder stroke lock assembly is in its horizontal position.

292995

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