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).
Comparison of Bosch and Watford core sections, discussing winding efficiency improvements.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan123 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (3) To____________________ 19 Order No. (WD{Mr Wood/Mr Whitehead}5 contd) Customer's No.__________________ The core sections are approximately (Illustration of an oval shape labeled 'Bosch.') (Illustration of a rectangular shape with rounded corners labeled 'A Watford') If the Watford section was made more circular or oval, little or none of the iron section would be lost but the dimension A would be shorter and thus more wire could be got on the core in the present available space. Comparing the windings it was observed that the Bosch was nicely tapered and the available space efficiently filled up, whereas the Watford windings Signed (contd) This Sheet must be filed on completion of the work. | ||