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).
Parts list and request to build one Dimmer Switch for instrument lights.
| Identifier | ExFiles\Box 168a\1\ img053 | |
| Date | 5th November 1936 | |
| 6135 To MRC. or Br.{T. E. Bellringer - Repair Manager} c. Rm{William Robotham - Chief Engineer}/Wst. BY/RD./B.5.11.36. Dimmer Switch RR.Sch.1007 - Instrument Lights. Will you please put in hand one Dimmer Switch to the above scheme, in accordance with blue prints which are attached herewith :- D.75779 - Base. 1 off. * D.75780 - Bobbin. 1 off. * D.75781 - Control Knob. 1 off. * D.75782 - Insulating Bush. 2 off. D.75783 - Insulation. 1 off. D.75784 - Washer. 1 off. D.75785 - Contact Arm. 1 off. D.75786 - Screw. 1 off. D.75787 - Screw. 1 off. D.75788 - Clamp. 1 off. D.75789 - Screw. 2 off. D.75790 - Plain Washer. 1 off. D.75791 - Spring Washer. 1 off. D.75792 - Assembly of Coil. 22 SWG .028 "Dullray" Enamel resistance wire. 11 ft. Additional standard parts required to complete the unit :- D.1142 - Washer. 5 off. D.1687 - Nut. 4 off. K.9005 - Spring Washer. 4 off. K.9006 - Spring Washer. 1 off. * Extra blue prints attached for Mr.Brock, but for the experiment these pieces should be made from Ebonite. BY/RD. | ||