Suggestive diagram showing the material composition and dimensions for a 37-slot armature dynamo.
| Identifier | ExFiles\Box 68\4\ scan0209 | |
| Date | 25th March 1920 guessed | |
| X 3526 EXP_L R.R. DYNAMO Diagram Labels: Banding Wire .020" Clearance .010" Mica .010" Manilla paper .010" Cotton Tape .005" Manilla paper .010" D.C.C. .005" Copper .040" Width Calculation: Width Manilla .020 Tape .010 Insulated conductors .100 Total .130 Depth Calculation: Depth Clearance .010" Mica .010" Banding .020" Manilla .040" Cotton tape .020 Conductors .400 Total .500" Bottom Text: DIAGRAM OF SLOT for 37 SLOT ARMATURE. Suggestive only. Depth to be kept down to a minimum. Footer (upside down): (27) R.R. No. 235 A (100 T) (S.F. 846 G.8-19) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2460. | ||
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).