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).
Alternative Choke Relief Valve springs for the Wraith III carburetter.
| Identifier | ExFiles\Box 7\4\ X 608 Carburetter-page21 | |
| Date | 26th April 1938 | |
| [Stamped and crossed out text] HOG. C. Rm.{William Robotham - Chief Engineer} GR.{George Ratcliffe} DR. 608 BY/Ald.{F. Allwood - Experimental Design}8/G.26.4.38. WRAITH 111. CARBURETTER. SECTION 5080. Please receive herewith two blueprints of the following :- Ex.S.700 Spring - Choke Relief Valve. 12 off. These springs are alternative to those called for on BY/Ald.{F. Allwood - Experimental Design}16/G.29.3.38., but provide for a lighter load. Kindly instruct. [Handwritten] Ald{F. Allwood - Experimental Design} BY/Ald.{F. Allwood - Experimental Design} | ||