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).
Outlining the use of drip plugs for centralised lubrication on various vehicle units.
| Identifier | ExFiles\Box 26\5\ Scan194 | |
| Date | 13th September 1928 | |
| To Hs.{Lord Ernest Hives - Chair} from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c. to RHC.{R. H. Coverley - Production Engineer} Y3806 Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}1/LG13.9.28. CENTRALISED LUBRICATION. We found that sufficient lubrication was got by using the drip plugs to the following units :- Front springs N.S. and O.S. Shackles rear and front. No.1. Universal joint and sphere. No.2. Rear springs. Central spindle N.S. and O.S. No.1. Front shackle. No.1. All other plugs as per sheet issued 16.4.28. Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||