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).
Blueprint diagram of a Stewart Vacuum Tank.
| Identifier | ExFiles\Box 40\3\ Scan045 | |
| Date | 15th December 1925 guessed | |
| STEWART VACUUM TANK. SUCTION RESTRICTION TO SUCTION AIR TWO SPRINGS USED. 1 7/8" STROKE FLOAT DIA = 4 1/2" FLOAT CHAMBER DIAM = 3.575" STROKE OF FLOAT = .875" A.T.L. | ||