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).
Trial of B.T.H. double filament anti-dazzle headlamp bulbs on chassis 11.B.V.
| Identifier | ExFiles\Box 167\1\ img334 | |
| Date | 11th August 1939 | |
| 6116 To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. BY c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} c. Wld/JR.{Mr James Royce} c. RHC{R. H. Coverley - Production Engineer}/sc. c. Lees for HPS.{Horace Percy Smith - Experimental Factory Mgr} BY/RD.5/B.11.8.39. CHASSIS 11.B.V. HEADLAMPS. SECTION 8280. We wish to try out on 11.B.V., B.T.H. double filament bulbs, with two stages of anti-dazzle. (1) Main driving light "U" shaped filament. (2) Anti-dazzle "V" shaped filament. (3) Additional anti-dazzle "V" shaped filament with vertical dipped reflectors. It will be necessary to put some temporary wiring on the car, and I have handed to HPS{Horace Percy Smith - Experimental Factory Mgr}/TT. the parts loaned to us by Lucas to enable double dipping reflectors with double filament bulbs to be tried. BY/RD. | ||