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).
Query on the milling process for slots on a tapered armature.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 141 | |
| Date | 1st June 1927 guessed | |
| -5- Contd. which to learn something, and necessarily we have to produce something more like what we think the final motor is going to be. This memo contains our proposition to that end. The query arises as to whether in the utilisation of the tapered armature, it is your intention that the slots shall be milled with a parallel cutter so as to be of unequal depth at the two ends, or whether the cutter shall descend in accord- ance with the taper so that the slot remains of uniform depth. Presumably this latter is the intention and will give a much better electrical job providing it is a good enough manufacturing proposition. EFC. | ||