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).
Request for a gauge to be made for tungsten contact points, referencing a previous design.
| Identifier | ExFiles\Box 35\6\ scan 172 | |
| Date | 18th May 1926 | |
| RHC.{R. H. Coverley - Production Engineer} from EFC. EFC3/T18.5.2.6. X2894 X.2894 - TUNGSTEN CONTACT POINTS. In order to get the correct amount of doming on some further tungsten points which we are obtaining, it is desired to have a gauge to hand to Messrs. Reynolds for the purpose. Would you please have such a gauge made, taking as the right amount of doming, the amount which you produced for us on the screw point of the previous group of tungsten contacts, one of which we have just recently handed to you for chassis 8-EX - EFC1/T14.5.26. The amount should not be greater, but if anything, a little less, just sufficient to accommodate a slight want of alignment, which might prevent contact on the edge only, in case of absolute flat contacts. EFC | ||