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).
Cost difference between two thread arrangements for the Wraith filler cap.
| Identifier | ExFiles\Box 148\5\ scan0281 | |
| Date | 2nd February 1938 | |
| To G/Rb.{R. Bowen} from Rm{William Robotham - Chief Engineer}/Std. J 1260 Rm{William Robotham - Chief Engineer}/Std.5/MH.{M. Huckerby}2.2.38. WRAITH FILLER CAP SCHEME SCD.422. Attached please find scheme drawing SCD.422 of above scheme. Will you please let us know the difference in cost between the thread arrangement shown, i.e. counterbored casting and spun brass insert sweated in position (assumed cost of insert is 4d,) and thread machined in casting without insert. Particulars of thread in either case to be as shown on drawing. Rm{William Robotham - Chief Engineer}/Std. | ||