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).
Blueprint drawing for a Tappet.
| Identifier | ExFiles\Box 158\4\ scan0255 | |
| Date | 4th August 1938 | |
| R.R. 772 (OH)(2448B - 15 - 10 - 36) N & G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Ltd EW. 1467 13338/E 19462/E 19524/E 18894/E .025 CHAMFER AT 45° BOTH ENDS 2.000 1.800 1.475 .175 SPH RAD 1.1865 DIA SIMILAR TO E.N 1413 EXCEPT FOR MAT'L SPEC & MACHINING .005 .425 DIA FLAT TO BE CHILL CAST ON THIS END TO GIVE A BRINELL OF 520-550 SECTION SHOWING BOTTOM END OF TAPPET SCALE 4/1 HOLE (RIGHT THR) DRILL .1562 DIA ROLLS-ROYCE LTD. PRINT ROOM AUG 4 1938 DERBY EW.1467 LAP WHERE MARKED LL .0625 DIA TAPPET TO BE SET UP FOR MACHINING FROM ITS CORE 1.587 1.20 E-CD480 REPLACE ALL COPIES TO:- EXP, PATT, WORKS, FORGE, T.O, S.R., D.O, R.D., T.D, COST DRAWN: W.H. TRACED CHECKED APPROVED LIMITS O.K. DATE: 12.10.37 ALL DIMENSIONS ARE EXPRESSED IN INCHES, ALL LIMITS IN THOUSANDTHS OF AN INCH. SCALE: 2 & 4/1 MACHINE ALL OVER OR WHERE MARKED THUS HEAT TREAT BRINELL: 102 - 241 TITLE: TAPPET MATERIAL: STANTON R.R.C. SPECN No: R.R.2A | ||