Blueprint diagram of a Feuerheerd oil pump.
| Identifier | ExFiles\Box 149\2\ scan0022 | |
| Date | 22th December 1927 | |
| XW577, 22-12-27, DIRECTION OF ROTATION, DIRECTION OF OIL FLOW, OUTLET PORT, INLET PORT, FEUERHEERD OIL PUMP, ROLLS-ROYCE LTD, PRINT, 22 DEC 1927, DEPT. | ||
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).