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).
Instruction memo regarding a design flaw with distribution boards where a magnet's pull is insufficient.
| Identifier | ExFiles\Box 50\1\ Scan066 | |
| Date | 26th May 1925 | |
| RR 25B (150.BKS.) (INST.29-8-29.) MP 22435H X. 4105. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.C. Order No. Customer's No. I have been examining a dozen distribution boards where the points had been made to give a rubbing movement when the cut out armature was depressed. What we are doing seems to be of little use as the "pull" of the magnet does not seem strong enough to depress the spring enough to cause any "rubbing," & even if it did at first, after a while in use it seems to "stick." We can of course make them to rub when pulled down with the finger but cannot guarantee they will stop like this. The job, to me, seems very unsatisfactory as far as obtaining your recent requirements are concerned. Signed E.T.Brock This Sheet must be filed on completion of the work. | ||