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).
The performance of a Dunlop Triple Foot Pump, detailing pressure achieved over time.
| Identifier | ExFiles\Box 149\5\ scan0037 | |
| Date | 6th October 1922 | |
| Mr. Hives from GWH.{George W. Hancock - Head Chateauroux} X993 6.10.22. REPORT ON DUNLOP TRIPLE FOOT PUMP. Mins. pumped. Scharder gauge lbs. 4 35 5 45 6 55 7 65 8 75 9 85. All tests carried out using 33 X 5 Dunlop tyres. Weight of pump 9 lbs. 6 ozs. | ||