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).
Instructions with diagrams comparing Bosch and Watford core sections and analyzing armature windings.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan124 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (4) To_________________19__ Order No. (WD{Mr Wood/Mr Whitehead}5 contd) Customer's No. ____________________ where very flat with no room endwise for further winding hence our suggestion re core section. [Diagram of a Bosch core section] Bosch. [Diagram of a Watford core section] Watford. Upon unwinding the Bosch armature it was found that the top three or four layers were of 44 S.W.G. enamelled copper-nickel alloy wire (presumably Eureka). We are not quite clear as to why this has been done unless it is an ingenious effort to reduce the Signed (contd) This Sheet must be filed on completion of the work. | ||