Blueprint drawing for a Spring Cup - Balance Weight - Wheel.
| Identifier | ExFiles\Box 159\7\ scan0265 | |
| Date | 15th March 1940 | |
| RG. {Mr Rowledge} 667 55° .050 .100R. .525R .287R .850 .287 20 SWG (.036) 1-HOLE .250 DIA. +10 .462 +10 .275 +10 .650R. 1-HOLE .1875 DIA. +10 .3125 R. {Sir Henry Royce} ROLLS-ROYCE LTD. PRINT ROOM 19 MAR 1940 DERBY HARDEN & TEMPER ALL DIMENSIONS ARE EXPRESSED IN INCHES, ALL LIMITS IN THOUSANDTHS OF AN INCH. SCALE 2/1 MACHINE ALL OVER OR WHERE MARKED THUS HEAT TREAT: BRINELL STANTON: TITLE: SPRING CUP - BALANCE WEIGHT - WHEEL MATERIAL: SPRING STEEL SPEC'N N⁰ REPLACE ALL COPIES TO EXP. PATT. WORKS. FORGE T.O. S.R. D.O. R. {Sir Henry Royce} R.D. AMERICA. T.D. COST. DRAWN: E.Day TRACED: CHECKED: APPROVED: LIMITS O.K. DATE: 15-3-40 USED ON: N⁰ 4, OFF, SECTION 1042 R.R.774 (20M) (81915 23-1-39) | ||
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).