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).
Standardisation and internal components of various types of batteries.
| Identifier | WestWitteringFiles\F\February1921\ Scan90 | |
| Date | 7th February 1921 | |
| R.R. 285A (100 T) (S.H. 798 10-12-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 -2- EFC4/T7.2.21. Contd. and efficiency and it is considered that it may be desirable to standardise these as a second source of supply, it having been decided, we understand, that in the case of items such as batteries and magnetos two simultaneous standards will be desirable. We are also expecting shortly from the Chloride Company a new battery in which the two pairs of rows of feet are introduced at the bottom of the plates so as to give separate support to the positive and negative elements. With regard to your enquiry re separators, the latest Willard battery which we have had has separators composed of perforated rubber into the perforations of which little wicks are inserteddto give porosity, and it is claimed that the porosity is equal to that of the wood separators previously used. Our tests show that the internal resistance of this Willard battery is no more (if anything less) than that of our standard. Wood separators are also used by Tudor, Fuller and the latest Peto & Radford high rate discharge batteries. In the new Tudor batteries we are receiving, the wood separators will be supplemented by perforated ebonite sheets between the separators and positive plates, this having been arranged during our visit and subsequently confirmed. Other batteries we have had have used celluloid separators. EFC. | ||