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 for a 4.50 inch D Super Low Pressure Rim.
| Identifier | ExFiles\Box 159\3\ scan0047 | |
| Date | 8th March 1932 | |
| MODIFICATIONS .610 ALT FROM .635 .187 R DELETED .218" .064" ADDED A 7 3/4" ALT FROM 7 7/16" 21/7/32 DMS B SEE MEMO DEV. DEPT. T.D.O. 21/4/33 3/5/33 C SEE MEMO D.D.F. T.D.O. 20 3 34 D 5/8" FROM 1 1/16" 6. 35 E .083" FROM .047" 15.1.35 .610 4.500 +.003 1.312 +.031 -.000 1.000 +.006 .625 +.031 -.000 .488 .687 +.047 -.016 .156 R.{Sir Henry Royce} 5° .375 R.{Sir Henry Royce} .137 R.{Sir Henry Royce} .32 DIA. HOLE IN EACH FLANGE DIAMETRICALLY OPP. VALVE HOLE VALVE DEPRESSION .187 R.{Sir Henry Royce} 17/32 35° 1/4 DIA. .56 R.{Sir Henry Royce} .375 R.{Sir Henry Royce} 20° .51 R.{Sir Henry Royce} 32 R.{Sir Henry Royce} NOTE: VALVE HOLE TO BE PIERCED ON EITHER SIDE OF WELL ACCORDING TO REQUIREMENTS OF INDIVIDUAL ORDERS. 4.50"D.{John DeLooze - Company Secretary} SUPER LOW PRESSURE RIM M.S. STRIP. 7 WIDE X 10 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} (.128) THK. C 01830 LIST OF TOOLS FORMING & CIRCLING ROLLS - BO2854-65 SAWING OFF BLOCKS - STG 277 & 8 WELDING BLOCKS - STG 279 & 280 JOINT ROUNDING BLOCKS - BO2875 & 6 CONTRACTING BLOCKS - STG 276 CIRCUMFERENCE TAPES - STG 281 LIMIT GAUGES. - BO2867 & 8 MEAN GAUGES. - BO2871 & 2 STRIP GAUGE - BO2867-9 VALVE DEPRESSION TOOLS - BO2882 VALVE HOLE GAUGE - BO2882 RIM SIZE | A INS. | B MM. | C INS. | D MM. 4.50x16 | 15.97 | 50.17 | 1274.3 | 13.97 | 43.89 | 1115 C' DIA. MEAN DISC FIT D' DIA. +/- .015 CIRC +/- .047 DUNLOP DEP DRAWN BY CHECKED SUPERCEDES DATE 8.3.32 SCALE 2"=1' RSO158 | ||