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 manufacturing process for a steel cut-out flange, considering drop forging or sheet steel pressing.
| Identifier | ExFiles\Box 45\3\ Scan119 | |
| Date | 15th May 1920 | |
| X.4072 R.R. 225.A (100 T) (S.F 846 6-8-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2460 Extract from R8/G15.5.20. X.3436. RE STEEL CASTINGS. X.3431. X.3419. X.4062. X.4072. The cut-out flange was arranged to be a simple drop forging of a rather different form, requiring the minimum machining, butting the exhaust pipe and welded all round the outside , If the cutout box itsebf could be altered, this too might be in sheet steel pressing instead of forging, but time does not permit of this. | ||