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).
Report from the London Midland & Scottish Railway Co. detailing the examination of two oil samples.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan168 | |
| Date | 22th February 1926 | |
| COPY. London Midland & Scottish Ryl Co., Chief Mechanical Engineers Dept., Chemists Office, Calvert Street, Derby. 22nd. Feb. 1926. REPORT ON 2 SAMPLES OF OIL. MESSRS. ROLLS-ROYCE, DERBY. The two samples received were labelled 'A' and 'B'. Results of examination :- 'A' 'B' Appearance in ¼" cell ... Dark orange, transparent, bright, greenish fluorescence. Dark orange, transparent, nearly bright, greenish fluorescence. Slightly paler than 'A'. Specific gravity at 60ºF 0.9032 0.9096 Efflux time (Redwood) seconds. at 70ºF 1920 2407 at 140ºF 226 241 at 212ºF 65 65 Flashing point (close test) 398ºF 405ºF Cold test (setting point). 20º - 23ºF 9º - 12ºF Volatility (loss in weight) in 1 hr. at 370ºF in a current of air). 7.70% 9.34% Free fatty acid ... 0.4% 0.1% Composition :- Mineral oil 88.8 95.5 Fixed oil ... 11.2 4.5 100.0 100.0 The results of a detailed examination of the fatty acids (and alcohols) separated from the mixtures indicate that the fixed oil contained in sample 'A' is a mixture in equal parts by weight of sperm oil and a non-drying oil, mostly probably lard oil. The fixed oil in sample 'B' has the properties of coconut oleine. Comparative tests have also been made by intermittently heating the oils to a temperature of 200ºC for 24 hrs. in order to ascertain the amount of alteration in the viscosity of the oil and the separation of asphaltic bodies insoluble in very light contd :- | ||