From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Summary of inventions related to an engine silencer and a parallel-cylinder diesel engine mechanism.
| Identifier | ExFiles\Box 147\4\ scan0137 | |
| Date | 20th November 1940 guessed | |
| 526,808 J.Laubacher and K.A.Kohn. Silencer for internal combustion engines. The invention relates to silencers in which the exhaust gases are divided into two streams each following a spiral passage way, the passage ways being of unequal length. 526,867. E.S.Hall. Parallel-cylinder engine mechanisms. Invention relates to "Barrel" type diesel engines working on the two stroke principle. | ||