American publisher Charles Knight was not at all impressed with his new 1901 Knox ‘gasoline runabout’. Like some other cars of the era, its four-stroke engine relied on a single valve to permit both ...

Continental, a successful manufacturer of automotive engines, purchased the rights for a Burt-McCollum single-sleeve valve engine design in 1925. Believing this technology might replace poppet valves ...

Gabriel Voisin was an aviation pioneer who progressed into the car business after the First World War using Knight-type sleeve-valve engines. Designed by American Charles Yale Knight yet perfected in ...

The Willys-Knight, built by Willys-Overland of Toledo, Ohio, from 1914 to 1932 is remembered for its ultra-quiet Knight sleeve-valve engine. Although it was also used in European luxury cars and the ...