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).
Instructions for insulation and fibres testing procedures.
| Identifier | ExFiles\Box 24\2\ Scan053 | |
| Date | 24th January 1919 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 88229 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Re Insulation Testing (Cont'd) Heat further & repeat & so on. Plot a curve of temperature against spark potential. ④ Immerse a weighed sample in water for 100 hours, re-weigh, and note absorption. Test breakdown. ⑤ Place weighed samples in sulphuric acid & mineral oil respectively. Observe how affected. If no apparent effect, leave 100 hours re-weigh & test breakdown. ⑥ Fibres ① Test as 1-4 above. ② Heat in oven until carbonization (Cont'd) Signed This Sheet must be filed on completion of the work. | ||