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).
Request to produce 12 more damper bushes with a 2° taper to prevent the rubber in Duprene glands from creeping.
| Identifier | ExFiles\Box 151\2\ scan0348 | |
| Date | 16th September 1937 | |
| 1292 HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Les. Rm {William Robotham - Chief Engineer} /Les.1/AP.16.9.37 DUPRENE GLANDS FOR SHOCK DAMPERS Rm. {William Robotham - Chief Engineer} 379. These have given very encouraging results on 32-EX., although there has been a slight tendency for the rubber to creep along the shaft. Will you please therefore produce 12 more damper bushes for holding these glands, but with a 2° taper on the diameter locating the outside of the rubber, in order to prevent the rubber from creeping out. Rm {William Robotham - Chief Engineer} /Les. | ||