Earth working – With ground support vertically adjustable relative to frame
Patent
1995-11-06
1997-05-13
Melius, Terry Lee
Earth working
With ground support vertically adjustable relative to frame
280 6H, 172 78, B60S 912
Patent
active
056283717
ABSTRACT:
A hydraulic lift apparatus for a farm implement has a sleeve mounted to the frame of the cultivator in a substantially upright position, and a fluidic cylinder mounted atop the sleeve. A caster wheel with a shaft is fully, rotatably, and slidably received within the sleeve and cylinder. When the cylinder is actuated, the cylinder piston pushes downward on the caster shaft and forces the shaft partially out of the cylinder and sleeve, thereby raising the frame of the farm implement and the blades attached to the frame. When the farm implement is to be returned to an operating position, the pressure on the cylinder is released and gravity returns the frame to its original position. A washer and cap screw on the caster shaft interact with a shoulder in the sleeve to prevent the caster shaft from falling out of the sleeve. A guide bushing at the bottom of the sleeve interact with a stop member on the caster shaft to limit upward motion of the caster shaft. Motion between the fully retracted and fully extended positions is unobstructed.
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Melius Terry Lee
Pezzuto Robert
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