Requesting samples of Bi-focal headlamp bulbs, including a sketch with socket dimensions.
| Identifier | ExFiles\Box 61a\1\ scan0356 | |
| Date | 17th October 1928 | |
| To OY. from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} X4477 Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 10/LG17.10.28. BIFOCAL LAMP BULBS. [struck-through: X1369] We are anxious to obtain as soon as we can some headlamp bulbs of the Bi-focal type. The dimension of our standard socket is as shewn. We would use double pole holders, both poles as high potential, [struck-through] leads. Can you get hold of some samples for us please. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} .595" .200" | ||
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).