Slide valve apparatus for internal combustion engine

In an internal combustion engine including a combustion cylinder having an opening at one end thereof, a piston mounted within the cylinder for coaxial reciprocable movement, a driven crankshaft, and a connecting rod connecting said crankshaft to said cylinder for linear reciprocable movement of said piston in response to the rotary movement of said crankshaft, a valve apparatus comprising:

• (a) a valve chamber extending longitudinally across and in fluid communication with the opening in said cylinder,
• (b) an intake valve plate having a longitudinal axis mounted within said valve chamber for slidable, reciprocable, longitudinal movement,
• (c) an exhaust valve plate having a longitudinal axis mounted within said valve chamber alongside said intake valve plate for slidable, reciprocable, longitudinal movement and parallel to the longitudinal axis of said intake valve plate,
• (d) each of said valve plates having a plurality of longitudinally spaced valve ports therein, said valve ports comprising movable intake valve ports in said intake valve plate and movable exhaust valve ports in said exhaust valve plate,
• (e) said valve chamber comprising a planar wall on the opposite side of said valve plates from said cylinder opening and having a plurality of fixed valve ports therethrough, said fixed valve ports being equal in number and substantially equal in size and spacing as said movable intake and exhaust valve ports, whereby said movable intake valve ports are adapted to register with their corresponding fixed valve ports when said intake valve plate is in its intake operative position for opening fluid communication between said cylinder and said corresponding fixed valve ports, said movable exhaust valve ports being adapted to register with their corresponding fixed valve ports when said exhaust valve plate is in its exhaust operative position permitting fluid communication between said cylinder and said corresponding fixed valve ports,
• (f) intake means communicating with said fixed intake valve ports for supplying fuel to said cylinder through said fixed intake valve ports and said movable intake valve ports in said intake operative position,
• (g) exhaust means for removing exhaust gases from said cylinder through said registered movable exhaust valve ports and fixed exhaust valve ports when said exhaust valve plate is in its exhaust operative position,
• (h) cam means operatively connected to said crankshaft PG,19 and to said intake and exhaust valve plates for longitudinally and reciprocably moving said valve plates for opening and closing fluid communication of said cylinder with said fixed intake valve ports and said fixed exhaust valve ports, respectively, periodically.