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).
Suggested design for an aluminium piston with patent rings and a slap-preventer for a 40/50 HP engine.
| Identifier | ExFiles\Box 77\1\ scan0056 | |
| Date | 13th April 1921 | |
| [ "ORIGINAL ROLLS-ROYCE GUDGEON PIN CENTRE LINE", "SECTION 'DD'", "SECTION 'EE'", "SECTION 'BB' (THROUGH A TYPE RING CHOKE)", "SECTION 'CC' (THROUGH SLAP PREVENTER SEAL)", "SECTION 'AA{D. Abbot-Anderson}'", "4 1/16"", "1 1/8"", "SUGGESTED DESIGN of ALUMINIUM PISTON", "FOR", "40/50 H.P. ROLLS-ROYCE ENGINE", "FITTED WITH", "'ALLEN' PATENT RINGS & SLAP-PREVENTER", "FOR", "ROLLS-ROYCE LTD. DERBY", "REF. BLUE PRINT N.O E.18470.A.", "SKETCH N.O M.P.338.", "DRAWING OFFICE", "ALLEN & SIMMONDS (BEARING) LTD.", "READING, ENG.", "13.4.21" ], | ||