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).
Blueprints and a list of parts for the Instrument Patch on 25/30 HP & 'Phantom III' models.
| Identifier | ExFiles\Box 168a\1\ img092 | |
| Date | 2nd July 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} c. Rm{William Robotham - Chief Engineer}/Wst. 6135. BY/RD.4/B.2.7.37. Instrument Patch - 25/30 HP. & "Phantom III". RR.Sch.1002. Please receive herewith blueprints of the new parts as follows :- D.76051 - Base. 1 off. D.76052 - Insulation. 1 off. D.76053 - Terminal. 2 off. D.76055 - Support Plate. 1 off. D.76056 - Case. 1 off. D.76057 - Resistance. 2 off. Dowler Eyelet. No.2810. 2 off. Dowler Eyelet. No.2811. 2 off. The Lamp Holders for use with this scheme should be to RR.Sch.1041 which has previously been issued, but with the Cable Exit Slots added. D.75875 - Contact. 8 off. D.75876 - Link. 8 off. D.75877 - Contact Spring. 8 off. 3½ volt bulbs. (M.E.S.). 6 off. Assembly of Lamps to D.75884. Also, to enable the assembly of lamps, we propose to modify the Lamp Holder as shown on D.76054. No details for the wiring for the back of this patch are being issued, but it should be wired up in accordance with the scheme. .048 dia. Bare Copper Wire with Sistoflex Sleeving 1 m/m dia. both of which can be obtained from production. Additional Standard parts required. K.1555A - Screw. 14 off. K.4451A - Washer. 14 off. K.9002A - Spring Washer. 14 off. Will you please put in hand as required. BY (ADJ). | ||