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).
Use of parts from an auto charge control switch and requesting a new unit for experiments.
| Identifier | ExFiles\Box 59\1\ Scan304 | |
| Date | 30th March 1928 | |
| Y4008 To HIC. from EFC. c. EY/RD. EFC5/T30.3.28. RE AUTO CHARGE CONTROL SWITCH. It appears that you have used the parts of auto charge control switch E, removed from 12-EX, in making up the first of the two green lamp switch units which we call G.{Mr Griffiths - Chief Accountant / Mr Gnapp} We trust that in accordance with EFC8/T14.3.28 you have put in hand two new sets of parts, because now we are without an auto charge control switch of the unit type, which we badly require for further tests, having decided that the old distribution board type of auto switch without the screw adjustment is now of little use for further experiment. Will you please put in hand one of these auto charge control switch units, to be wound with our latest approved windings which we have now confirmed as satisfactory, and let us have this at the earliest possible moment. EFC. | ||