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 with pricing and quantity details for distributor components and a push button switch.
| Identifier | ExFiles\Box 39\3\ Scan091 | |
| Date | 19th May 1921 guessed | |
| -2- Part No. Per Piece $ Die Cost $ Quantities of Quotation. G-5536. Base of Push Button Switch. .75 150 500 DISTRIBUTOR PARTS. E-1442 Distributor Terminal Plate. (Molded complete with square bushing, terminal prong and raised figures) 1.11 185 500 E-18250 Contact Ring. (All holes and threads molded) 1.50 315 500 E-17273 Lower Plate. (Complete molded with hole for dowel) .90 160 500 (Strongly recommended by makers that above two parts be molded together with all metal inserts complete, but this necessitates change in design to do away with spring pins and present split bushes for sliding adjustable points. It is recommended that pronged parts be screwed into horizontal brass bushes which might be threaded inside to receive screwed adjusting pins with flat circular ends tipped with very thin platinum disc. The cost of machining and assembly would be greatly reduced in this way. Cost of combination probably about - 2.00 500 500 E-17771 Rotor (with all holes molded but without annular groove and without metal inserts) .78 225 500 (Strongly recommended that design be modified to permit molding of metal inserts) It would be required that circular plate should project about 1/16" above rotor. | ||