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).
Issuing drawings for a modified large Wraith water pump rotor with Tufnol bearings.
| Identifier | ExFiles\Box 149a\1\ scan0288 | |
| Date | 13th September 1938 | |
| 1269 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Std. Rm{William Robotham - Chief Engineer}/Std.9/MH.{M. Huckerby}13.9.38. By/Ald.{F. Allwood - Experimental Design} is today issuing drawings EXS.1048/c which are details for reduced width of rotor for the large Wraith water pump with Tufnol bearings, and also SCD.865 which is an arrangement of this modification. Will you please let us have these pieces at the earliest possible moment to try on the Tufnol bearing pump which we have. We will hand it to you, and the rotor of same can be modified to above details while the packing piece can be fitted to this pump. Rm{William Robotham - Chief Engineer}/Std. | ||