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 the design and manufacturing of a large matrix tube.
| Identifier | ExFiles\Box 105\1\ scan0168 | |
| Date | 16th September 1931 | |
| S12/29/1250 28-8-31 N & G E57006 Nº OPERATION MACHINE TOOL TOOL Nº BOUGHT OUT COMPLETE THICKNESS OF MATERIAL = .006 EACH ROW OF IMPRESSIONS (HORIZONTALLY) TO BE ON APEX LINE OF HEXAGON 9 m/m OVER FLATS E 57135 120° .0315 R .040 SCALE 4/1 7 3/4 m/m DIA .300 .250 .050 R 3.250 18 IMPRESSIONS SPACED AS SHOWN .625 1.500 PITCH .250 240° .875 1.500 PITCH TUBES TO BE ANNEALED BY THE SUPPLIERS AGAINST SEASON CRACKING ONLY EACH TUBE TO BE TESTED TWICE & NOT BY THE SAME OPERATIVE. FIRST BEFORE BULGING, SECONDLY AFTER BULGING & MAKING IMPRESSIONS BY AN AIR PRESSURE OF 15 LBS. / ☐". THE TUBES BEING IMMERSED IN WATER ON EACH TEST FOR A PERIOD OF NOT LESS THAN 5 SECONDS. DEVELOPMENT OF TUBE SHOWING DISPOSITION OF IMPRESSIONS SCALE 2/1 E 57135 REISSUE ALL COPIES TO EXP. PATT. WORKS. FORGE T.O. S.R. D.O. R.{Sir Henry Royce} R.D. AMERICA. T.D. COST. DRAWN. TRACED. CHECKED. APPROVED. LIMITS O.K. DATE. 16-9-31 USED ON No OFF SECTION D.E.V.P R.F.5 S.250 SCALE 1/1, 2/1, 4/1 MACHINE ALL OVER OR WHERE MARKED THUS HEAT TREAT BRINELL STANTON TITLE. MATRIX TUBE (LARGE) MATERIAL C. SPEC Nº 213 B. STAMP: ROLLS-ROYCE LTD. PRINT ROOM, 30 NOV 31 DERBY | ||