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).
Description and diagrams of Hunter's Carb-Jector Silencer Apparatus for valveless two-stroke engines.
| Identifier | ExFiles\Box 79\2\ scan0092 | |
| Date | 21th January 1921 guessed | |
| Note the vacuum created by Hunter's Carb-Jector Silencer Apparatus (Patent No. 153.184 now published) sucks or draws out the exhaust gases, scavenges the cylinder, and then sucks in the fresh mixture direct into the cylinder inlet port without the aid of any crankcase compression or valves. The patent pipe on the piston top discharges the fresh mixture up to the top of the cylinder well clear of the exhaust port. This gets over the fault of all two stroke valveless engines. The fresh mixture cannot cut across the cylinder, and out at the exhaust. [Handwritten Text] GUARANTEED VACUUM 9"(lbs under the atmosphere) DOMES INLET PORTS No CRANKCASE COMPRESSION NEEDED. CARBURETTOR DOME LARGE EXHAUST PIPE This engine is made possible due to using a vacuum apparatus. | ||