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).
Hand-drawn schematic of a carburettor or similar fuel-air mixing device with labelled components.
| Identifier | Morton\M11\ img156 | |
| Date | 13th March 1919 guessed | |
| Vacuum RR patent air damped lifting piston atmosphere lever for throttle control to rearward 3 cylinders to forward 3 cylinders Throttle Diffuser jet. intake Sleeve, which is lifted by piston petrol Stalimary Cone. taper needle moving with sleeve & alters the restrictions air to diffuser. Drawing of above sent to Srul. | ||