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).
Hand-drawn design for a brass electrical fitting and associated components.
| Identifier | ExFiles\Box 34\4\ Scan126 | |
| Date | 26th January 1921 | |
| 2 wanted Brass 88910 .625 .625 .95- 2.6- For an electrical fitting 2 wanted in brass nice polish ready for Silver plating which will be done at the factory 26 T.p.i .4 .5 .5 .5 bored .225 edge rounded .3 .075 .4 .075 .8 26 tpi thread chased inside about .25" up & will give a thread about .840 to suit .965 1.2 2 wanted .835 plug brass to screw in above 2 holes for wires .125 dia .5 hole in centre tapped 7/S 3BA 2 brass nuts .45 .6 .2 dia about .09 holes to screw up? 2 straight brass wires 12" long 12 S.W.G = .104" screwed 7/S 3BA at each end for 5/8 RR Derby for Royce. West WitteringHenry Royce's home town | ||