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).
Instructions for the production of a Radiator Filler Plug for a Wraith III, including alternative materials and threading details.
| Identifier | ExFiles\Box 9\3\ 03-page068 | |
| Date | 3rd January 1938 | |
| RADIATOR FILLER. WRAITH III. SECTION 5250. Please receive herewith three blueprints of the following :- Ex.S.348 Radiator Filler Plug. 1 off. The material called for is Bakelite, but if it is not practicable to machine this material kindly produce in aluminium and stove enamel all over except thread. Form of thread should be to suit the inserts which will be supplied by Rm{William Robotham - Chief Engineer}/Std. and plug thread should be a slack fit in insert. Kindly instruct two sets. HY{Tom Haldenby - Plant Engineer}/Ald.{F. Allwood - Experimental Design} all HPS.{Horace Percy Smith - Experimental Factory Mgr} c. Rm.{William Robotham - Chief Engineer}/Std. 049 BY/Ald.{F. Allwood - Experimental Design}G/3.1.38. | ||