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 roller assembly with detailed specifications and dimensions.
| Identifier | ExFiles\Box 28\3\ Scan154 | |
| Date | 20th February 1935 | |
| ALTERATION Location Date Initial 1.128 ±.001 .3765 .375 DIA M 21291 S 9110 M 21195 M 21196 .917 BCDA .701 20° PRESSURE ANGLE ALL TOOTH FACES MUST RUN RADIALLY TRUE WITH BALL RACES WITHIN .0025 INDICATOR READING 13 - 7/32" DIA BALLS EACH SIDE CONES SNAP RING ASSEMBLED MATCH CONES TO +.000. - .001 END PLAY All Dimensions not Limited to be ±.010 Machine where Marked / Extra Fine Finish where Marked ff SCALE: ADAMANT ENGINEERING CO. LTD LUTON. ROLLER ASSEMBLY TYPE I/G MATERIAL No. Off per Set Machine all Over / Ground where marked G Drawn: Sld Checked: WH Approved: Date: 20-2-35 MA21184 | ||