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Arthur Edward Hardcas Herschel
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15,512. Herschel, A. E. H. July 31. Drawings to Specification. Steam pumps.-Consists of a steam distributing valve-gear in which the piston valve is moved through the first part of its stroke by a tappet on the main piston-rod, the second part of the stroke being effected by the pressure of the expanding steam admitted from the cylinder to one end of the valve.
GB190115512D1901-07-311901-07-31Improvements in the Construction and Working of Valve-gears for Direct-acting Steam-pumps, Motors and other Engines.
ExpiredGB190115512A
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