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).
Instruction to place an official order for 50 Bentley compression rings with specifications.
| Identifier | ExFiles\Box 148\3\ scan0255 | |
| Date | 23th August 1937 | |
| To Roy.{Sir Henry Royce} from Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} c. G/Mt. 1256 Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews}14/AP.23.8.37 BENTLEY COMPRESSION RINGS. Will you please pass an official order to the Light Production Co.Ltd., for 50 compression rings conforming to specification. .0937 wide. .134 Radial depth. .469 free gap. 18 lbs/sq.in. wall pressure. The rings to be ground finish on periphery and taper face to the extent of .001 on diameter. Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} | ||