Rotary valve engine with lubricator

Claim 1

In an internal combustion engine having one or more cylinders, each cylinder having one port in the combustion chamber for the admission of air or combustible mixture and the discharge of combustion products, said engine having a rotary valve mechanism with a stationary sleeve communicating with the ports, a rotary member disposed in said sleeve and being rotatably driven, said rotary member comprising concentrically arranged and spaced inner and outer tubular members with the inner tubular member defining an exhaust passage and the annular space between the inner and outer tubular members defining an intake passage, said outer tubular member including an intake port for alignment with the port in communication with the combustion chamber, said inner tubular member including a radially extended passageway extending to the periphery of the outer tubular member is isolated relation to the annular space for communication with the port in the combustion chamber for selectively admitting air or a combustible mixture into the combustion chamber and discharging exhaust products therefrom through the port in the combustion chamber, said inner tubular member defining the exhaust passage and the annular space defining the intake passage being substantially straight throughout the length thereof, said inner tubular exhaust member being made in sections connected together with expansion joints, said outer tubular member being constructed of unitary construction, said expansion joints enabling transverse and longitudinal expansion of the inner tubular member thereby eliminating distortion of the outer tubular member due to differences in expansion and contraction.