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 detailing the specifications, dimensions, and air pressure testing procedure for a matrix tube.
| Identifier | Morton\M19\ img162 | |
| Date | 27th March 1930 | |
| R.R.774(200M)(99879-27-3-30) N & G LTD. NO OPERATION MACHINE TOOL TOOL NO TUBES TO BE ANNEALED BY THE SUPPLIERS AGAINST SEASON CRACKING ONLY .300 +.50 LENGTH OF TINNING .250 +.25 ES1389 B 2151 C 2138 81186 .050 RAD INSIDE 7 1/2 M/M + 1/10 M/M 6 M/M .007" 4.000 EACH TUBE TO BE TESTED TWICE & NOT BY THE SAME OPERATIVE, FIRST BEFORE BULGING, SECONDLY AFTER BULGING, BY AN AIR PRESSURE OF 15 LBS PER SQ INCH THE TUBE BEING IMMERSED IN WATER ON EACH TEST FOR A PERIOD OF NOT LESS THAN 5 SECONDS. SCALE 2/1 HEAT TREAT BRINELL TITLE MATRIX TUBE MACHINE ALL OVER OR WHERE MARKED THUS MATERIAL STANTON SPEC N. No REPLACE ALL COPIES TO EXP WORKS PATT. FORGE S.R. R AMERICA COST T.O. D.O. R.D. T.D. DRAWN TRACED CHECKED APPROVED LIMITS O.K. DATE USED ON 40/50 N. OFF 5250 SECTION ROLLS-ROYCE LIMITED PRINT ROOM 21 APR 30 DERBY J.9125 | ||