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John Thomas
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26,382. Thomas, J. Dec. 3. Gas and like engines; valves and valve gear.- The inlet and exhaust valves of a four-strokecycle engine are combined. A beat valve o opened by a tappet s<1> controls the passage into and from the cylinder, and a cylindrical slide valve g worked by a lever q controls the inlet ports h, the exhaust ports h<2>, and the passage of the incoming charge between itself and the central seating h<3>. The cam shaft may be mounted on the cylinder head. A modified arrangement of the valve seatings is described. Cylinders, cooling. Longitudinal passages are formed in the walls of the cylinder and communicate with the crank chamber, or a pump and baffles for directing the air over the valve-chest are attached. As an alternative, a ribbed jacket made in two parts and held together by expansion bolts is provided with longitudinal grooves a<4> terminating in an annular chamber which is exhausted by a fan, pump, or exhaust ejector.
GB190426382D1904-12-031904-12-03Improvements in Internal Combustion Engines.
ExpiredGB190426382A
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