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 page discussing the accuracy of broaches and their responsibility for noise.
| Identifier | ExFiles\Box 136\5\ scan0306 | |
| Date | 3rd April 1937 | |
| -3- RHC{R. H. Coverley - Production Engineer}/AEC.1/LS.3.4.37. Present day broaches are becoming very accurate. Gears do not produce all the noises heard, but they are largely responsible. Results of improvements made will be given in a later report. RHC{R. H. Coverley - Production Engineer}/A.E.Clarke. | ||