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 for the 'Spectre' 31.EX Switchbox, section 8160, detailing components and their drawing numbers.
| Identifier | ExFiles\Box 166\3\ img031 | |
| Date | 13th December 1934 | |
| RHC{R. H. Coverley - Production Engineer} C.B. c. Hs{Lord Ernest Hives - Chair}/Wst. 16090 BY/RD2/W.13.12.34 "SpectreCodename for Phantom III" 31.EX. Switchbox, Section 8160. R.R.Scheme 781. Please receive herewith blue prints of the following parts detailed from the above scheme. Will you please put two sets in hand and the remainder of the particulars will be issued in a day or so :- D.74892. Switch Base. D.74893. Switch Casing. D.74894. Contact Maker, Front Main. D.74895. Operating Spindle, Main. D.74896. Contact Maker, Rear Main. D.74897. Coupling Barrel. D.74898. Insulating Bush Main Spindle. D.74899. Plug, Main Lever Spring. D.74900. Plug, Ignition Lever Spring. D.74901. Bush, Main Spindle. D.74902. Contact Maker Master Switch. D.74903. Insulating Bush, Rear Main Spindle. D.74904. Contact Finger, Main. D.74905. Contact Shoe, Main Contact Finger. D.74906. Rivet. D.74907. Pivot Pin, Main Contact Arm. D.74908. Connector, Main Contact Arm. D.74909. Spring, Main Contact Arm. D.74910. Contact Maker. D.74911. Contact Maker, Ignition A.{Mr Adams} D.74912. Contact Maker, Ignition B. D.74913. Operating Lever, Ignition. D.74914. Cam, Ignition Lever. D.74915. Coupling Piece. D.74916. Bush, Ignition Spindle. D.74917. Coupling Piece, Ignition Spindle. D.74918. Operating Spindle, Ignition. D.74919. Distance Piece, Ignition Spindle. D.74924. Packing, Accessories Brush. D.74925. Brush Stamping, Accessories. D.74926. Brush Stop, + to Starter and Ammeter. D.74927. Brush Stamping. D.74928. Brush Packing, Battery + D.74929. Brush Stamping, Battery + D.74930. Brush Stamping, Ignition. D.74931. Brush Packing, Ignition. D.74932. Brush Stop. D.74933. Brush Stop. D.74934. Angle Plate, Accessories. D.74935. Connector, Accessories, Ignition. (Contd :- | ||