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).
Blueprint showing a cross-section for a needle bearing clutch operation.
| Identifier | ExFiles\Box 103\1\ scan0027 | |
| Date | 19th April 1938 | |
| Hs{Lord Ernest Hives - Chair} 937 ROLLS-ROYCE, LTD. PRINT ROOM APR 19 1938 DERBY. G 80194 EXCEPT FOR .360 DIA HOLE G 80198 MODIFIED .360 DIA 14 ROLLERS .102 DIA NEEDLE BEARING CLUTCH OPERATION - PII [N.Sch 3551] | ||