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).
Request for the manufacture of three roller-chain sprockets and the supply of chain for an indicator drive.
| Identifier | ExFiles\Box 104\3\ scan0205 | |
| Date | 3rd September 1928 | |
| RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Tsn. V5220 Hs{Lord Ernest Hives - Chair}/Tsnl/LG3.9.28. CHAIN DRIVE FOR INDICATOR. V862 Attached are a sprocket to fit a tapered and keyed shaft, and a print shewing some dimensions of another sprocket. Please make three roller-chain sprockets approx. 4.500 pitch dia. One is to be drilled as shewn on the print, to replace the 20 HP. fan pulley; one is to have a tapered and keyed hub like the attached sprocket, to fit on the indicator. The third will be required to fit Lr{Mr Ellor}'s scheme for taking a drive off the F.{Mr Friese} engine reduction gear. We shall want about 4 ft. of chain, .250 wide and any suitable pitch. We have not shewn all the sprocket dimensions since these should be obtainable from tables. Hs{Lord Ernest Hives - Chair}/Tsn. | ||