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).
Minimum yield specification for barrel forgings.
| Identifier | ExFiles\Box 176\3\ img123 | |
| Date | 18th August 1940 | |
| Cgh{W Clough}/EM. from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}8/ML.18.8.40. 2a Ve. has recently asked for a minimum yield of 50 tons on his barrels. We pointed out that you sent him the specification showing 45/50 tons, in your Cgh{W Clough}/EM.8/ML. 26.6.40. Will you please let us know the figures on the barrel forgings which are at the present moment being machined, so that we can see whether any are below 50 ton yield, and if so, by how much. Rm.{William Robotham - Chief Engineer} | ||