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).
The chemical properties of porous ebonite battery separators and arrangements for testing a Phantom battery.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan144 | |
| Date | 9th July 1930 | |
| -4- EFC/AD9.7.30 contd. Chemical Properties. (10) These porous ebonite separators are immune from the action of sulphuric acid, lead peroxide or other substances to be found in a battery. Samples have shown no visible attack nor were they softened even after 8 years' use. They contain no harmful substances such as acetic and other organic acids, which have an injurious effect on the electrodes. We have judged, taking all circumstances into account, that a test of a standard (externally) Phantom battery arranged by the Young Accumulator Co. with Wilderman separators would be worth while and it has accordingly been arranged that the Young Co. should receive two of our standard 6-volt two compartment moulded cell cases for this purpose. We are hoping to receive such a battery within about 14 days time. It has been explained to the makers that to improve upon our standard battery is not only a difficult matter in view of the improvements already incorporated therein as a result of the mutual experience between this Co. and the Chloride Co. but it also is one which can only be proved over a period of years in view of the fact that our present standard batteries are now giving very good lives of 5, 6, 7 and even 8 years. It is largely the fact that the Wilderman separator may be said to give a means of applying a new feature | ||