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).
Experimental treatments and observations of P & R batteries, discussing components like separators, plates, and cell cases.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan9 | |
| Date | 22th September 1924 | |
| Contd. -2- EFC3/T22.9.24. received experimental treatment by Messrs. P & R.{Sir Henry Royce} Proof of the superiority of detention in the grids of this harder paste was afforded by our own observations of the opening up of these batteries in their repair depot. It will also be noted that the report refers to a comparison between 9-plate and 7-plate positive plate sections (our present standard is the 7-plate section) and also refers to the improved type of wood separator, ribbed on both sides. It will also be noted that in the batteries opened up at Messrs. P & R's depot, towards the end of last year, ebonite separators were not included. Only a trace of buckling and no short circuiting had occurred. There has, as yet, been no occasion to open up a 20 HP. P & R battery containing all these later improvements, e.g. improved wood separator, additional ebonite separators, and harder paste, as at present standard. (see p 2a). (2) One piece six-compartment moulded cell case. From the very first, the six separate cell cases of 20 HP. P & R batteries have been in their dagenite material, the advantages of which in comparison with ebonite have been enlarged upon on previous occasions, e.g. EFC1/T15.11.22, item (7), etc. Latterly, however, we have had a number of experimental P & R batteries of 20 HP. size put up in one- piece six-compartment moulded cell cases, four of these batteries having been referred to in our previous report, | ||