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).
New Siemens sparking plugs made of aluminium oxide and their suitability for car engines.
| Identifier | ExFiles\Box 58\2\ Scan051 | |
| Date | 9th December 1932 | |
| S/W. PER BAG. 81812.a F2/JL.9.12.32. To Hs.{Lord Ernest Hives - Chair} from F.{Mr Friese} Copy to Wor.{Arthur Wormald - General Works Manager} Please see the attached leaflets relating to Siemens Sparking Plugs. During my time in Germany I visited the Siemens factory in connection with other matters and the man who was showing me round referred to these new plugs which they have just produced as being something a good deal better than the average. The insulating material is composed of aluminium oxide, and it is claimed for it that it is of exceptional durability. I am forwarding you herewith one AGl. plug and one AG.10., together with a sample of the insulating material which may be of interest to the Metallurgical Department. You will notice in the folder that they claim the AG.1. as being suitable for Rolls-Royce car engines. Will you please let us know whether you consider these plugs of any interest. If you require any further information, this can be quite easily obtained for you. Attachments:- 4 Leaflets. Samples packed separately. [Handwritten initials] [Handwritten shorthand notes at bottom of page] | ||