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).
Samples of waxed and plain paper for use as ignition coil insulation.
| Identifier | ExFiles\Box 61\1\ scan0132 | |
| Date | 24th September 1930 | |
| X6110 EFC. BY/RD2/W.24-9-30. X6110 X8712 Re :- Ignition Coil Insulating Paper. We send you herewith samples of waxed paper which we normally use in our Ignition Coils,and also samples of a plain paper which has been wound into a standard Coil and impregnated with wax. You will see that the wax has thoroughly saturated the paper and,upon examination,even to the innermost layers the wax was thoroughly in. Would you please say if this second paper is equal to that which is waxed before winding. BY/RD. | ||