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).
Inquiry to Telegraph Condenser Co. Ltd. about the physical qualities and potential deleterious effects of brown wax for ignition coil windings.
Identifier | ExFiles\Box 165\5\ img133 | |
Date | 9th October 1934 | |
86052. Hs{Lord Ernest Hives - Chair}/Wst.5/MA. 9th October, 1934. Messrs.Telegraph Condenser Co.Ltd., Wales Farm Road, North Acton, London, W.3. Dear Sirs, Some considerable time ago you very kindly supplied us with a small quantity of brown wax which we understand you use for impregnating condensers. We should be much obliged if you could give us particulars of the physical qualities of this wax particularly its melting point also whether you consider the impregnation of our ignition coil centre windings with this wax would have any deleterious affects. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||