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).
Specification list for various electrical components including wires, washers, insulators, and terminals.
| Identifier | ExFiles\Box 45\4\ Scan105 | |
| Date | 27th November 1922 | |
| To RHC.{R. H. Coverley - Production Engineer} -2- Cont'd.{John DeLooze - Company Secretary} BY/DS/.27.11.22. 24 S.W.G. (.022) Iron (Stalloy) Wires in Core. NOTE - For varnishing Coil use "Extra Insulating Varnish" from "The Sterling Varnishing Co". Manchester. NUTS. K.4308 - 2 B.A. Locknut for F.6578. PLAIN WASHERS. K.4405 - 2 B.A. Plain Washer for F.6578. SPLIT WASHERS. K.9005 - 3 B.A. Spring Washer for D.50453. K.9006 - 2 B.A. Spring Washer for F.6578. ROSS COURTNEY PATENT TERMINAL. Terminal Ordinary Type. 5/32" Bolt Hole. INSULATIONS. 2 Yds. Oil Silk .750 Wide X .006 thick. 6 " " " 2.725 " X .005 " 12 " " " 2.725 " X .005 " Oil Paper 2.325 wide X .00075 thick. The last mentioned insulation "Oil Paper" is the standard Goshawk 11 Condenser Paper. With regard to the layer of silk between the primary windings, Mr Brock has obtained some silk from town, approx. .002 thick, which he wishes to try out, the paper we have not being suitable. One piece of Leatheroid 5 mils. thick. .625 wide. 2.300 long. .003 thick Tinned Copper Ribbon. .250 wide. 1.500 long. COPPER WIRE. 21 S.W.G. (.032) D.S.C. H.C Wire Overall dia: .0355. 43 S.W.G. (.0036) Enamelled H.C. Wire. Overall dia: .00435. 1 ft. 10/40 Gauge D.S.C. Flexible Wire. BY/DS | ||