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 regarding the specifications of an Armature Circuit.
| Identifier | ExFiles\Box 36\4\ scan 082 | |
| Date | 17th July 1920 | |
| R.R. 300 (120B) (SF 349 24-1-19) MP 200552 91132 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.A.2 Customer's No. Re X. 30146 Armature Circuit. (Cont'd). conductors in all, with 22, or, 2 virtual conductors in each slot. The slots are cut at an angle of 10° from a parallel with the axis, and are insulated with empire cloth to a thickness of .008", and presspahn .009" thick, the coils being further protected by being bound with cotton tape treated with shellac varnish, to a thickness of .010". The length of the armature core is 2.7 inches, with a shallow groove at each end to take a bond of steel wires, Signed Cont'd.{John DeLooze - Company Secretary} This Sheet must be filed on completion of the work. | ||