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 high pressure valve for a hydraulic shock absorber.
| Identifier | ExFiles\Box 55\4\ Scan350 | |
| Date | 10th April 1929 | |
| DRAWING NO. A-12292-3-4-5 SEE ALSO THE FOLLOWING OPERATION DRAWINGS No. POSITION OF HOLE A-12292 PLAIN NO HOLE A-12293 A .450 A-12294 B .650 A-12295 C .850 PART VIEW OF OIL FLATS. SCALE 10/1 .462 DIA ±2 .250 DIA -10 .450 DIA DRILL .062 ±2 TRUE WITH STEM. .100 +10 .025 -10 .025 R ±10 .250 ±10 .037 ±10 45° .050R ±10 1.050 ±10 .925 -25 .062 DIA ±2 POSITION GIVEN ABOVE. GO BOTH ENDS .161 DIA -1 .075 DIA +1 2 FLATS .125 ±2 ACROSS BOTTOMS APR 10 1929 DRAWN BY WMP TRACED BY WMP CHECKED BY APPROVED BY LIMITS ROLLS-ROYCE OF AMERICA, INC. MODEL 40/50 SEC - WEIGHT DATE 6-18-28 SCALE 2/1 HEAT TREAT TITLE HIGH PRESSURE VALVE HYDRAULIC SHOCK ABS. BRINELL 248-267 STANTON MACHINE ALL OVER MACHINE WHERE MARKED ||| MATERIAL S/N SPECIFICATION 206 NO. OFF 2 9380 Fr. | ||