Sleeve Assembly
Fitting the engine cylinder closely, one within the other, with a film of oil between, are these two sliding sleeves, and within the inner one slides the piston.
Each sleeve has two slots in it, one on each side.
When slit Y in the outer sleeve comes opposite slot X in the inner sleeve, and opposite the intake port C, a charge of gas is drawn into the cylinder.
After the explosion has taken place, the sliding of the sleeves brings the slot B in the inner sleeve opposite slot A in the outer sleeve, and the right opposite the exhaust port E, forcing the burnt gas out through the exhaust manifold.
Sleeve Diagram - Exploded View
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Sleeve Production Slide Show