Telegram reporting a minute crack in an engine's exhaust valve seat, suggesting the cause is stress.
| Identifier | ExFiles\Box 77\4\ scan0224 | |
| Date | 2nd June 1922 | |
| POST OFFICE TELEGRAPHS. ORIGINAL Office of Origin and Service Instructions: Chester T. 54 Handed in at: 2/35 M No. of Telegram: 66 Received here at: 3.30 M Office Stamp: DERBY 2 JU 22 Roycar Derby X4240 X4225 Hives minute crack found in exhaust valve seat of number it engine suggest it is not loss of water but exclusive stress | ||
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).