In re Niven

Appellant has appealed, from the decision of the Board of Appeals of the United States Patent Office, affirming that of the examiner, refusing to allow claims 9 to 14, inclusive, of his application for a patent, of which claim 9 is typical and reads:

9. The combination with an internal combustion engine having a plurality of aligned cylinders, pistons operable within the respective cylinders, a single sleeve valve between each piston and associated cylinder having a combined oscillating and reciprocating movement with respect to the sleeve and cylinder axes, and a crankshaft driven by the…