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).
Technical drawing for an inlet and exhaust valve.
| Identifier | ExFiles\Box 158\4\ scan0292 | |
| Date | 18th July 1935 | |
| VE769S U86050 DRAWING NOT TO BE SCALED. ALL GOODS MUST BEAR OUR PART No. OUR DATE LETTER AND MAKER'S TRADE MARK. ALTERATIONS 1) I-1621 25-9-31 2) I-1796 6-2-32 3) I-1853 4-5-32 4) I-1999 29-7-32 5) I-2166 19-1-33 6) I-2189 10-2-33 7) REDRAWN SAME No. CENTRE & SLOT REMOVED FROM HEAD I-2891 28-2-34 8) CUT LENGTH FROM 10 1/2" TO 10 3/4" I-2957. 3-5-34. 9) WIDTH OF HEAD REDIMENSIONED 3.5±.12 TO 5.5±.12 TO SUIT I-2918 1-6-34 10) TIP & OVERALL LENGTH INCREASED 1m/m.{Mr Moon / Mr Moore} DIMS FROM C/L & 146. LIMIT ±.1 ADDED TO OVERALL LENGTH. CENTRE DRILL 'B' SIZE ADDED TO VALVE HEAD. I-3492 7-6-35. 11) CUT LENGTH FROM 10 3/4" I-3549. 18-7-35 USE 'B' SIZE CENTRE DRILL 5.5±.12 2.1±.12 23 147 ±.10 45 DIA ±.1 14 DIA 60° 8 DIA 45° 12R 8R ±.25 11 DIA +.00 -.013 G POLISH & FREE FROM TOOL MARKS 0.5 CHAMFER AT 45° 7.6 25R ±.05 VIEW IN DIRECTION OF ARROW END TO BE GROUND SQUARE TO STEM & NO CENTRE LEFT IN. H.T. N° 34A BRINELL N° NOT HARDER THAN 269 IMPRESSION DIA 3.7 THE ASSOCIATED EQUIPMENT Co. LTD. SOUTHALL, MIDDLESEX. PART No. A10412 ST.{Capt. P. R. Strong} 0512 V TITLE BLOCK: VALVE / INLET & EXHAUST DRAWN: P.D.P. TRACED: N.P. CHECKED: W.P. PASSED: WWW DATE: 28.2.34 MACHINED ALL OVER f MACHINED G GROUND NEWALL STANDARD LIMITS ARE USED ONLY WHERE LETTER SYMBOL GIVEN B FOR HOLES P PUSH FIT D DRIVING FIT F FORCE FIT X RUNNING FIT Y MACHINED DIMENSIONS WITHOUT LIMITS TO BE WITHIN + OR - 0.2 m/m OF GIVEN SIZE MATERIAL LIST No. 34 MODEL No. OFF: 660 12 PART No. A10412 MADE FROM: SILICO CHROME STEEL 1 5/32" DIA X 10 5/8" LONG | ||