William Joseph Still

In 1894, he returned to England, where he invented a double-acting diesel-steam engine in which waste heat from the cylinder jacket and the exhaust was used to produce steam to assist the diesel engine.

[2] The Still engine was used experimentally for stationary, marine and locomotive applications.

The best-known application was the Kitson-Still locomotive of 1926 which was tried out on the London and North Eastern Railway The Still engine gave an increase in thermal efficiency over an ordinary diesel engine but was not a long-term success because of the added complexity of the steam system.

The prospectus claimed that shipbuilders Dennys of Glasgow, Armstrong Whitworth of Newcastle, ACL of Nantes and Scotts of Greenock (with others under negotiation, including Nobel frères of Sweden) had taken licences to produce marine versions of Still's engine; of these only Scotts is known to have placed it into production.

This article about an engineer, inventor or industrial designer from England is a stub.