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 lap winding (short chord) electrical configuration.
| Identifier | ExFiles\Box 68\4\ scan0188 | |
| Date | 4th March 1915 | |
| R.R. 235A (300 H) (S.A. 353. 4-3-15) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0970. n = 36 p = 4 y1 = ?, y2 = 9. Lap winding (Short chord) C O I X . | ||