Request for the production of an Auxiliary and Main Coil assembly for an automatic switch, using a finer wire than standard, with a detailed parts list for each.
| Identifier | ExFiles\Box 168a\2\ img001 | |
| Date | 29th November 1929 | |
| X6032 E.P.C. BY {R.W. Bailey - Chief Engineer} /RD2/DM. {D. Munro} 29.11.29. 40/50 HP. Chassis. Automatic Switch. Sec.8060. Will you please put in hand 1 each of the following coils for the above switch, having a finer wire than standard. D.72431 Auxiliary Coil Assembly. D.72432 Main Coil Assembly. When these two coils are complete they should be fitted to the switch used on EPC's Starter Rig. The parts required are as follows, and with the exception of the special wire can be obtained from production.- Auxiliary Coil. D.71758 Auxiliary Pole. 1 off. D.71759 End Washer. 1 off. D.71760 Pole Insulation Tube. 1 off. D.71761 Insulation Washer. 2 off. D.71762 End Washer. 1 off. D.71763 Insulating Washer. 1 off. D.50686 Cable Eye. 1 off. D.70710 Cable Eye. 1 off. For sundry bits of insulation see drawing. 1 1/2 ounces of 27 S.W.G. DGC. Copper Wire. Main Coil. D.71743 Pole. 1 off. D.71744 Washer. 1 off. D.71745 Insulating Tube. 1 off. D.71746 Insulating Washer. 2 off. D.71747 End Washer. 1 off. D.71748 Insulating Washer. 1 off. D.70710 Cable Eye. 2 off. For sundry bits of insulation see drawing. 6 ounces of 21 S.W.G. DBC. Copper Wire. BY {R.W. Bailey - Chief Engineer} /RD. | ||
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).