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).
Manufacturing process for condensers, specifically the use of wax for impregnation and the benefits of wax paper over plain paper.
| Identifier | ExFiles\Box 165\5\ img091 | |
| Date | 17th May 1933 | |
| Hs{Lord Ernest Hives - Chair}/Wst. BY/RD.15/J.17.5.33. x6113 Condensers. The type of condenser we manufacture is not suitable for impregnating with wax, after manufacture owing to the wax insulating the tinfoil strips which are put in to form the terminals. We do not care about using plain paper on coils or condensers owing to moisture being absorbed by the paper before using and this cannot be entirely got rid of. It is preferable to treat the paper in its manufacturing stages with wax and ensure a moisture proof start. It is not possible to get a small quantity of plain paper for coils and condensers to test this sample of wax, we should have to buy a complete roll which when split up would make a large quantity of coils and condensers. We suggest the wax be tested by itself similar to our previous tests on wax. The report on the original wax paper condensers implied that they were more consistent than the varnish ones and on these grounds were standardised. BY/RD. | ||