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).
Drawing and testing specifications for a square matrix tube.
| Identifier | ExFiles\Box 24\5\ Scan340 | |
| Date | 25th September 1930 guessed | |
| Drawing Number: E 58239 Top Box: TUBES TO BE PROVED AS BY THE SUPPLIERS AGAINST SEASON CRACKING ONLY. Diagram Text: LENGTH OF TUBING, .300, .050, 4.000 +/- .010, .375, .0625 RAD. Main Text Block: EACH TUBE TO BE TESTED TWICE & NOT BY THE SAME OPERATIVE, FIRSTLY BEFORE BENDING, SECONDLY AFTER BENDING, BY AN AIR PRESSURE OF 15 LBS. PER SQ. INCH, THE TUBES BEING IMMERSED IN WATER ON EACH TEST FOR A PERIOD OF NOT LESS THAN 5 SECONDS. Title Block: SCALE: 3/1 HEAT TREAT: BRINELL TITLE: MATRIX TUBE MATERIAL: BRASS SPEC'T NO: 2151 Change Log (Right): Illegible Operations List (Left): Illegible | ||