Inventor of an engine which captured the waste heat to generate steam which could then be injected into the cylinder to drive the piston on the return stroke (ie the stroke after the combustion stroke).
1901 Living in Reigate, an electrical engineer
1902 Married Grace Mabel Bailey in Ealing
1911 Living in Southall, a consulting engineer specialising in the transmission of heat, with Grace Mabel Still 28, Mabel Helen Still 7, Ernest William Still 6, Ena Dorothy Still 4
1919 Captain Francis Edward Dyke Acland made a presentation at the Royal Society of Arts on the new prime mover invented by W. J. Still; Acland and Still had been working on developing the engine for many years
The engine was more a concept for total energy recovery than an actual engine design. The basic principle was to recover as much waste heat as possible in the exhaust gases and engine cooling water by generating steam and using it to drive steam cylinders; the Still engine thus combined diesel and steam.
1959 Died in Ealing