Four-cycle internal-combustion engines having the supply or exhaust valve thereof, or both, disposed transverse to the working cylinder, the axis of such valve or valves lying in a plane perpendicular to the axial line of the working cylinder, and a bell-crank lever operated by and in unison with the engine for operating such valve or valves in the proper order to secure the continuous automatic operation thereof, and similar arrangements of valves and operating
means therefor, but not shown in connection with all the elements necessary to form a complete and operative engine.
