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).
Hand-drawn diagram illustrating a normal lap winding for an electrical component.
| Identifier | ExFiles\Box 68\4\ scan0187 | |
| Date | 4th March 1915 | |
| R.R. 235A (500 H) (S.A. 353. 4-3-15) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0970. Lap winding (normal) n = 36, p = 4 y1 = 9, y2 = 7 Diagram Numbers: 1, 2, 3, 4, 5, 6, 8, 9, 10, 20 Symbols: +, - X1640 | ||