Blueprint for a clutch friction disc manufactured by The Cleveland Graphite Bronze Co.
| Identifier | ExFiles\Box 129\1\ scan0099 | |
| Date | 24th June 1936 | |
| DR. NO. 100150-2 4 SLOTS .026-.030 WIDE EQUALLY SPACED AS SHOWN 3/16 DRILL - 4 HOLES REMOVE SHARP EDGES 6 13/16 R. {Sir Henry Royce} 5/16 R. {Sir Henry Royce} 1 - R.H. AND 1 L.H. DISC REQ'D. {John DeLooze - Company Secretary} SLOT 1 AS SHOWN & 1 OPPOSITE 15/64 DRILL - 9/16 C'BORE 3/64 DEEP - 16 HOLES FORM AS SHOWN IN SECTION THRU HOLE ROLLS-ROYCE, LTD. # G-84808 #74 BRONZE MIXTURE ROUGH BLANK .114 .124 GRIND .106 .110 STEEL 13.600 DIA. ±.025 9.500 DIA. ±.025 BEFORE FORMING AFTER FORMING 15/64 DIA. 17/64 DIA. BRONZE STEEL SECTION THRU HOLE 4 TIMES FULL SIZE SIDES MUST BE FLAT WITHIN .015 VARIATION IN THICKNESS .002 THE CLEVELAND GRAPHITE BRONZE CO. CLEVELAND, OHIO CLUTCH FRICTION DISC TOOLS MUST BE STAMPED WITH "T" NO. & PARTS WITH "T" NO. & MAT'L LIMITS ON ALL FRACTIONAL MACHINE DIMENSIONS ± .010 REMOVE ALL PROJECTING EDGES AND SHARP CORNERS SCALE: HALF DR. H OK. MK APP. DATE: 6/24-36 DR. NO. 100150-2 2 OF 3 | ||
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).