Air compressor

Claim 1

An internal combustion engine modified to produce compressed air, comprising: an opposing four cylinder air cooled engine; two of said cylinders of said opposing four cylinder air cooled engine being substantially unmodified so as to be responsive to internal combustion; the remaining two cylinders of said opposing four cylinder air cooled engine being mechanically interlinked to said two unmodified cylinders and each defining a piston housing, a cylinder head adapted to mate with each piston housing, said cylinder head comprising a machined block of metal defining cooling fins on the exterior thereof, an inlet port and an outlet port communicating with the cylinder of said piston housing, a spring actuated outlet valve in said outlet port, a spring actuated inlet valve in said inlet port, means for retaining said inlet valve within said inlet port, and means for retaining said outlet valve within said outlet port, whereby upon operation of said engine said piston reciprocates within said cylinder to draw air through said inlet valve, compress said air within said cylinder and release compressed air through said outlet valve.