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).
Order for six moulded rubber dynamo couplings with specific hardness.
| Identifier | ExFiles\Box 132\1\ scan0147 | |
| Date | 9th August 1939 | |
| 1116 To Les.{Ivan A. Leslie} c. to G/JWH. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}14/JH.9.8.39. Will you please order from the Leyland Rubber Co. 6 moulded rubber dynamo couplings similar to the previous samples you obtained for us but with a durometer hardness of '30'. This is very flexible but despite the softness of the rubber a '30' coupling from Metalastic has proved very reliable. The coupling scheme is to SCD.940 and the detail drawings EXS.1143/4. O/N.52509. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||