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).
Sample of ULCO bearing metal sent for examination and potential application.
| Identifier | ExFiles\Box 76\3\ scan0120 | |
| Date | 8th January 1920 | |
| R.R. 235 B (50 T) (S.G. 504. 8-1-20) G 2585. Mr Hives. H17/EB6520. Laboratory. RE ULCO BEARING METAL. I am sending you herewith a sample of the above metal together with a booklet giving information with respect to same, in order that you may examine it and suggest possible application for its use. The metal is made electrically, and the lead is hardened up by the absorption of barium and calcium etc., to the extent of about 1½%. | ||