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 for testing coils by immersing them in paraffin wax and performing subsequent leakage tests.
| Identifier | ExFiles\Box 24\2\ Scan299 | |
| Date | 8th December 1924 | |
| RR 228 (150 BKS.) (DD 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (3) To Order No. (WD{Mr Wood/Mr Whitehead}14 contd) Customer's No. noted, the coils now sparking quite regular on the gaps. The coils were then immersed in pure paraffin wax which was not allowed to attain a high temperature, in the lab and again tested at 100°C when no appreciable difference was observed in the sparking performance as compared with the performance without the wax. We then conducted leakage tests on pure paraffin wax :- (a) After it had been melted and not subjected to more than 150°C (b) After subjection to a high temp 275°C. And we found that in the case Signed (contd) This Sheet must be filed on completion of the work. | ||