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).
Report from the Iron Foundry on the results and scrap rates for batches of Bentley 25/30 Cylinder Block castings.
| Identifier | ExFiles\Box 132\4\ scan0122 | |
| Date | 1st February 1938 | |
| To Rm.{William Robotham - Chief Engineer} from RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers} (Iron Foundry) (FOR YOUR INFORMATION.) 1124 / 7 5/JT.1.2.38. RE - BENTLEY & 25/30 CYLINDER BLOCKS. (EB.2929) Castings for the above part are now despatched from the foundry in batch quantities of 50. The results on the last three batches are as follows :- First 2 batches now completely machined. 100 Castings Scrap to machine shop 1 casting. Scrap to foundry 3 castings i.e. On 100 Cylinder Blocks, foundry scrap in machine shop = 3% Third batch of 50. All passed O.K. to final honing. RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers} Perkins | ||