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).
Patent application detailing the claims for a carburetter invention.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page283 | |
| Date | 1st May 1916 | |
| 102,043 3 the tubular chambers containing the gauze by the vacuum produced by the induction stroke of the engine. The air will only absorb a certain quantity of petrol in the process and when the supply of petrol is greater than the air can absorb, the heavier or less volatile hydrocarbons are caught by the fine gauze and held thereby until absorbed by air. The outer tube of the tubular chamber being of greater diameter than the induction pipe the speed of the mixture in the said outer tube is materially reduced, and there is more time for the heavier hydrocarbons to be absorbed by the partially carburetted air already generated in the intermediate and inner tubes. Consequently the mixture will be uniform and homogeneous. Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:— 1. In a carburetter the arrangement of an expansion chamber lined throughout with absorbent material and expanding towards the induction pipe from the inlet for the fuel mixture, and into which chamber all the mixture of air and fuel enters at one point. 2. In a carburetter the combination of an expansion chamber lined with absorbent material and expanding towards the induction pipe from the inlet for the fuel mixture, a gauze nozzle for fuel, and a coned helical spring adapted to admit air between its coils under suction by the engine. 3. In a carburetter the combination of a chamber lined with absorbent material (for example gauze) an air supply tube covered with absorbent material and projecting upwards in the chamber, a bell covered with absorbent material and located over the tube and adapted to rest on the bottom of the chamber and to be elevated by the suction of the engine, and means to feed liquid fuel to the tube. 4. Apparatus as claimed in Claim 1 provided with an absorbent permeable screen between the chamber and the induction pipe of the engine. 5. Apparatus as claimed in Claim 3 provided with steadying distance pieces outside the bell and engaging the chamber wall. 6. Apparatus as claimed in Claim 3 in which the crown of the bell is shaped as an inverted cone for the purpose described. 7. The carburetter substantially as described with reference to the accompanying drawings. Dated this 1st day of May, 1916. BOULT, WADE & TENNANT, 111/112, Hatton Garden, London, E.C., Chartered Patent Agents. Redhill: Printed for His Majesty's Stationery Office, by Love & Malcomson, Ltd.—1917. | ||