Month in the Patent Office: A Selection of the More Important Aircraft and Engine Specifications Published Recently

Scavenging air enters a two‐stroke cylinder by tangential ports e3 and exhaust leaves by one or more ports in a substantially cylindrical combustion chamber a3 into which liquid fuel is injected by a transversely‐arranged injector c. A shoulder aa2 is closely approached by the piston, the clearance being thus limited to the combustion chamber a3 which preferably contains one large exhaust valve b. Air is supplied by a blower to a chamber e. The injector c may have a single orifice and be radial or tangential to the chamber a3.