Title: Earthworking implement with automatic fluid flow shut-off manifold

Abstract: An earthworking implement such as a tractor-drawn chisel plow having a fertilizer tank is provided with an automatically operated control system for fluid dispensing when the implement is work configured. In one embodiment the implement is provided with a rockshaft for moving implement wheels between a wheels up, implement working position and a wheels down, implement transport position. An interconnector cable is wrapped at one end around the rockshaft. As the rockshaft turns and rotates the wheels into the implement working position, the cable pulls the valve stem of a fluid metering valve partially out of the valve, thereby opening the valve and permitting fluid flow.

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Inventors: English, J. L. (Tell City, IN, US)

Application Number: 534437
Filing Date: 1974-12-19
Publication_date: 1976-05-18
Assignee: Chem-Farm, Inc. (Evansville, IN)
Primary Class(es): 111/123 137/351, 172/413
Other Classes:
US Patent Ref:

3031983	May, 1962	Hanson	111/7.
3518953	Jul, 1970	Johnston	111/7.
3608645	Sep, 1971	Meiners	111/7.
3643745	Feb, 1972	Betulius et al.	172/413.

Other Refs:
Primary Examiner: Pellegrino, Stephen C.
Assistant Examiner:
Attorney: Olson, Trexler, Wolters, Bushnell & Fosse, Ltd.