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).
Promotional leaflet explaining the step-by-step operation of the Autovac Petrol Feed System.
| Identifier | ExFiles\Box 40\4\ Scan047 | |
| Date | 6th May 1922 guessed | |
| CAN BE FITTED TO ANY EXISTING CAR. THE PATENT AUTOVAC PETROL FEED SYSTEM Watch this novel demonstration of The PATENT Autovac PETROL FEED SYSTEM (Higginson, Arundel & Jay's patents.) SOLE MAKERS, ARUNDEL & CO., Sovereign Works, STOCKPORT. SOLD BY No. 1. Demonstration. This pipe running from the main petrol supply tank— into both lead supply tank and this one from the induction pipe No. 2. The intake strokes of the motor create a vacuum in the upper chamber and this vacuum draws petrol from the supply tank. As the petrol flows into the upper chamber it raises— this upper chamber which is fitted into a larger or lower chamber. No. 3. which, reaching a certain height, automatically shuts off the vacuum valve and opens an atmospheric valve which lets the petrol flow into— this float valve is shown here half raised. No. 4. so that the petrol flows to— this lower chamber The float valve in the upper chamber drops with the petrol flowing out, and when it reaches a certain point it in turn re-opens the vacuum valve, and the process of refilling the upper chamber begins again. The same processes are repeated continuously and absolutely automatically. The lower chamber is always open to the atmosphere. No. 5. —the Carburetter as required, uninterruptedly and with even pressure. | ||