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 Cam.
| Identifier | ExFiles\Box 28\2\ Scan060 | |
| Date | 8th December 1926 | |
| ALTERATION R TO BE STAMPED ON THIS END AFTER OP 1 NOTE- THIS HOLE AFTER HEAT TREATMENT TO BE 1.125 DIA +.0005 -.003 KEYWAY & SERRATIONS 6 TIMES FULL SIZE NOTE PARTICULARLY THE CENTRE FROM WHICH THIS RADIUS IS TAKEN. CASEHARDENED DEPTH OF CASE TO BE 1/32 (SCLEROSCOPE TEST 88-95) BRINELL TO BE 560 to 620 STANDARD CAM PROFILE 170° CIRCULAR MOVEMENT RH{R. Hollingworth} 65° ANGULAR MOVEMENT ALL DIMENSIONS NOT LIMITED TO BE +.010 -.010 TO BE MACHINED WHERE MARKED S EXTRA FINE FINISH WHERE MARKED f GROUND WHERE MARKED G MACHINED ALL OVER ADAMANT ENGINEERING C° Ld LUTON. CAM MATERIAL: NICKEL CHROME CASEHARDENING STEEL TYPE: R2 TRACED: CA CHECKED: CB APPROVED: No. OFF PER SET: V Dimensions and Tolerances: 3.625 +-005, 1.8125 +-00, 32½°, 32½°, CUT TRACK .385, 67° 30', 90°, .25 +.001, 2.75 DIA +.005, 1.875 DIA, 1/16R, 3.4687 +.000 -.005, .80, 3° 32-45', 2.5312 R +-005, .7031 +.005 -.000, .0937 +-005, 1.125 DIA B BROACH, .25 +.002, 1/32, 20° +-15', 22° 30' | ||