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).
Summarising the results of an end thrust test on different brands of ball bearings.
| Identifier | ExFiles\Box 20\7\ Scan088 | |
| Date | 24th July 1914 | |
| To Hy.{Tom Haldenby - Plant Engineer} from R.{Sir Henry Royce} Copy to J.{Mr Johnson W.M.} Copy to Wor.{Arthur Wormald - General Works Manager} Copy to By.{R.W. Bailey - Chief Engineer} C O P Y. RB{R. Bowen} HGP 24. 7. 14. Re End Thrust Test of Ball Bearings. I thank you for your report, and it seems there is not doubt of the result, and we are glad the experiments confirmed it. Deep Groove D.W.F. first. Very good. Ordinary Hoffmann second. Very fiar. Skefko Very poor. F.H.R. [Handwritten in left margin]: x548 [Watermark]: ROBINSON BOND | ||