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).
Instructions to improve a component by using thicker insulation to prevent leakage from copper dust.
| Identifier | ExFiles\Box 3\5\ 05-page149 | |
| Date | 1st June 1933 | |
| B.B. 238 (1M. Pads.) Per 152. 6.33. DE J.P&F.{Mr Friese} 197828 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 19 type 4, which as you no doubt remember was a very poor job. It seems that this type WD{Mr Wood/Mr Whitehead} might be improved by thicker insulation between the end case & the brush holder. this insulation strips is only about .062" thick at present & leakage might easily occur here when a deposit of copper dust from the brushes has taken place. (Cont'd.{John DeLooze - Company Secretary}) Signed This Sheet must be filed on completion of the work. | ||