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).
Letter from John Marston Limited regarding the testing results of oil coolers.
| Identifier | ExFiles\Box 131\5\ scan0027 | |
| Date | 18th November 1936 | |
| 1114 IMPERIAL CHEMICAL INDUSTRIES LIMITED. TELEPHONE: 21481 (4 LINES) TELEGRAMS: SUNBEAM, WOLVERHAMPTON. CODES: A.B.C. 5TH & 6TH EDITIONS; BENTLEY'S. Reply to be addressed to John Marston Limited for the attention of FAH/TE FROM JOHN MARSTON LIMITED. WOLVERHAMPTON. [LOGO: NATIONAL SCHEME FOR DISABLED MEN] 18th November, 1936. Messrs. Rolls-Royce Ltd., Derby. For the attention of Mr. Steadman. Dear Sirs, The six Oil Coolers which you supervised being oil tested, successfully passed the cold water test. They were held under water at 200 lbs./sq.ins. for five minutes. Three of the coolers returned were tested and one failed in the oil test (a surface leak). The other two were then water tested as above. These two have a tally attached A.1 and A.2. There are therefore eight fully tested, but not machined nor with grids attached. Four coolers after machining were gauged and brought to within 2 thousand limits. Tested at 200 lbs - all passed. Two required regauging (not more than 2 thousand distortion). Other two remained undistorted. Yours faithfully, For JOHN MARSTON, Limited, P.A.H. Yeats | ||