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).
The use of punched armature plates in dynamos and motors, specifically the 40/50 motor and 20 HP models.
| Identifier | ExFiles\Box 61b\3\ scan0196 | |
| Date | 10th November 1927 | |
| X5620 To BY/RD. from EFC. EFC7/T10.11.27. PUNCHED ARMATURE PLATES.+ X4132 Are we yet using punched armature plates in any of the standard dynamos and motors ? I think you once informed me that the 40/50 motor was being altered in this respect. Also we have suggested that a 20 H P. motor and dynamo should be thus altered. EFC. See X4132 | ||