Green Acres S04E25 - The Milk Maker

Local inventor "Looney Luke" Needlinger has built a contraption that turns hay into milk. Convinced it will make them rich, Haney and Fred pitch Oliver on investing in the machine, but he thinks they're being conned. After seeing the milk maker in action, Oliver convinces a chemist to give the devise a once-over. What he discovers insures that cows will always have work.