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).
Examination of new battery cells and comparing the improvements in an Exide battery to the current standard.
| Identifier | WestWitteringFiles\F\March1921\ Scan30 | |
| Date | 7th March 1921 | |
| To R & E.{Mr Elliott - Chief Engineer} from EFC. ORIGINAL. EFC3/T7.3.21. c. to CJ. & PN.{Mr Northey} c. to By.{R.W. Bailey - Chief Engineer} & Bn.{W.O. Bentley / Mr Barrington} c. to Da.{Bernard Day - Chassis Design} & EP.{G. Eric Platford - Chief Quality Engineer} c. to EWT. for R.{Sir Henry Royce} Inc. Handwritten notes (top right): X.4288, X 979, X 420, X 3629, X 3717 X.664 - BATTERIES. Further to our EFC7/T18.2.21 and with further reference to your E4/Gll.2.21, we are sending down to you with Mr.Hives on 6 EX, one each of the very latest cells of Tudor and British Exide make. We have ourselves dismantled another cell similar to each of these for examination. These cells differ from previous samples of the same make in the following respects, and these modifications being by mutual arrangement between ourselves and the battery Cos. concerned. Handwritten note (left margin): X.4288 Exide Battery. This battery has the following improvements as compared with our present standard, which, you may remember, already has perforated ebonite sheets between the positive plates and the wood separators, kinked flexible connectors, also central stay bolt and packing pieces to offer better lateral support to individual cells. 1. The positive and negative sets of plates are provided with two rows of feet each, making four lines of feet in all, these corresponding to four supporting bridges in the bottom of the ebonite case, so that the positive and negative elements are individually supported. 2. The ebonite separators between the positive plates and wooden separators, which were previously punched with circular holes, are now perforated with numerous horizontal slits, this being considered by the Chloride Co. to be an improvement, giving presumably a greater total area of cross sections of electrolyte through the perforations. Contd. | ||