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 showing the failure analysis of a cut-out ring.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan044 | |
| Date | 11th January 1930 | |
| CUT-OUT RING FAILURE (E79544). V 768 MELTED HERE CRACKS & NEARLY MELTED. 11-1-30 | ||