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).
Letter detailing various insulating materials like varnished cloths, tapes, silks, and micanite sheets.
| Identifier | ExFiles\Box 24\2\ Scan012 | |
| Date | 14th November 1919 | |
| 14. 11. 19. Messrs. The Rolls Royce Ltd. (contd.) Varnished Cloths, yellow or black. To voltage test & gauge. do. Tapes. To thickness and width. do. Silks, yellow. Usual thicknesses 0.10 & 0.125 m/m.{Mr Moon / Mr Moore} do. Papers, var. one or both sides, various gauges. As the above are made in several gauges, please send details of samples you require. Meantime, I enclose two booklets of samples showing above. I call your attention to Swiss Works No. 340 special Commutator micanite sheets, which have been regularly used for many years by Messrs. Siemens; Bruce Peebles & Co. Ltd., Oerlikon Co., and others. Please see enclosed descriptive booklet, page 3, re. these special sheets, and sample in booklet, marked A.{Mr Adams} I may add, the Swiss Insulating Works Ltd., turn out over 2,000 Micanite parts per day for sparking plugs. If buyers, shall be glad to send samples for testing. Yours faithfully, Archibald Campbell. -2- | ||