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).
Engineering drawing for a Roller (Lead .7').
| Identifier | ExFiles\Box 153\2\ scan0058 | |
| Date | 16th May 1936 | |
| ALTERATION Location Date Initial BLACK FIGURES SHOW DIMENSIONS OF CHECK ON ROLLER RETURNED FROM ROLLS ROYCE AND MADE UNDER WHP 13476 TOOL ROOM (1.853") 1.8603 DIA ±.003 TO SHARP CORNERS .921 DIA CRS +.001 -.000 (.9275) (13°20') 3°22' ±15' .080 5° .236 ±.001 (.237) .500 DIA BALL .1220R +.0005 -.000 (.3715") .377 ±.001 (.8506") .850 DIA +.005 -.000 7/16 DIA (1.434") 1.075 +.014" .32R .64R (.304') (16°35') 16°38' ±15' A-> 1.272 ±.0025 (1.2728") (.3635") .377 ±.001 .921 DIA CRS +.001 -.000 (.9295) SCALE:- 4 TIMES FULL SIZE RAD LARGE APPROX .005 FALLING AWAY AT BOTTOM (43°23') 43°22' ±15' FULL SIZE ALL TOOTH FACES MUST RUN RADIALLY TRUE WITH BALL RACES WITHIN .0025 INDICATOR READING FINISHED PART MUST BE THOROUGHLY DE-MAGNETIZED THIS DRWG MUST NOT BE WORKED TO TO BE CASEHARDENED. DEPTH OF CASE TO BE 1/32". SCLEROSCOPE TEST 88-95. DO All Dimensions not Limited to be ± .010 Machine where Marked f Extra Fine Finish where Marked ff Ground where marked G SCALE: ADAMANT ENGINEERING CO. LTD LUTON. ROLLER. (LEAD .7") TYPE SPEC MATERIAL: NICKEL CHROME CASEHARDENING STEEL No. Off per Set: 1 Machine all Over Drawn: Bal Checked: HJ Approved: Date: 16-5-36 M22168 | ||