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).
Drawing of a front spring bush.
| Identifier | ExFiles\Box 43\2\ Scan099 | |
| Date | 28th January 1926 | |
| DRAWING NO A7030 SEE ALSO THE FOLLOWING OPERATION DRAWINGS 6062 A 6079 A BREAK CORNER .025R ±10 1.900 ±5 REAM .652 DIA. TAP .750 DIA. 12 T.P.I. R.H. U.S. FORM GRIND .853 DIA. TRUE WITH THD. BREAK CORNER .025 R.{Sir Henry Royce} ±10 CASE HARDEN WHERE MARKED H-H .010 -.020 DEEP SCLEROSCOPE 75-85 MUST BE SOFT WHERE MARKED S-S IT IS ESSENTIAL ON THIS PART THAT SUFFICIENT MATERIAL IS REMOVED FROM THE O.D. AFTER CARBORIZING TO LEAVE DEFINITELY SOFT ON FULL LENGTH. STAMPED: FEB 6 1926 A DRAWN BY: S.K.C. TRACED BY: G.E.C. CHECKED BY: AWS APPROVED BY: RWRB LIMITS ROLLS-ROYCE OF AMERICA, INC. MODEL: 40-50 SEC.: 7020 WEIGHT: DATE: 1-28-26 SCALE: 2/1 HEAT TREAT: BRINELL: STANTON: TITLE: FRONT SPRING BUSH MACHINE ALL OVER MACHINE WHERE MARKED MATERIAL: S/ZN SPECIFICATION: 207 NO. OFF: 4 | ||