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).
Copy of a letter from Peto & Radford reporting on the condition of two returned batteries.
| Identifier | WestWitteringFiles\G\October1921\ Scan12 | |
| Date | 8th October 1921 | |
| R.R. 285A (100 T) (S.H. 798. 10-12-20) G 2947 COPY OF LETTER RECEIVED FROM:- PETO & RADFORD, 50, GROSVENOR GARDENS, LONDON, S.W.1. Private and Confidential. Messrs. Rolls-Royce Ltd., DERBY. GRNM/5. 8th October, 1921. Dear Sirs, For the attention of Mr. Fowler Clark. As arranged, your Representative Mr. Birkitt came to our main works at Dagenham Dock yesterday and the two batteries returned by you were opened in the laboratory under his supervision. We have to report the following :- No.1 P.D.L.9 (thick plate type), first filled with acid and charged in June 1919. General appearance of the exterior of the battery was very good. The cell to cell connections were uncoupled and found to be in perfect condition. Not the slightest sign of corrosion was seen and all parts were as clean as the day they were made. This we expected as the special precautions we take in manufacture (subsequently shown to Mr. Birkitt) to prevent creeping of corrosion have been so successful in the past that we have no trouble with any of our batteries from this cause. The six cells were withdrawn from the rubber lined wood box and the interior of the box and the divisions between the cells was all in perfect condition, apparently no leakage anywhere having taken place. Three of the cells were opened up and the sections withdrawn. Acid level quite correct and gravity in all three cells 1220. The condition of the plates was practically the same in each cell. All negatives were in excellent condition, the positive plates, however, had grown and swelled slightly and one plate showed slight signs of buckling. No signs of sulphation. Removing the perforated corrugated ebonite separators showed them to be in perfect condition. Separating the plates showed the positives to have shed a good deal of active material and the sludge at the bottom of the cell was Contd. | ||