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Harry Benwell Stocks
John Racker Webb
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13,291. Stocks, H. B., and Webb, J. R. June 8. Lift valves; piston valves; actuating valves and cocks.-The supply of motive fluid to pneumatic tools is regulated by two valves on one stem. A lift valve m regulates the admission of highpressure fluid and a piston valve k the admission of low-pressure fluid. The valves are opened, against the pressure of a spring n, by the combined action of levers h, h<2>,
GB190713291D1907-06-081907-06-08Improvements in Pneumatic Hammers and like Tools.
ExpiredGB190713291A
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