Instructions for insulation testing procedures on treated and untreated fabrics.
| Identifier | ExFiles\Box 24\2\ Scan046 | |
| Date | 24th January 1919 | |
| RR 300 (120B) (SF 349 24-1-19) MP 208552 88222 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To 19 Order No Customer's No. Re: Insulation Testing (Cont'd) oven. Then submit to breakdown test while still dry. ③ Test mechanical properties on samples before and after drying, by bending round pins, folding &c. Note cracking, tearing &c and whether dried samples become Brittle permanently. L. Fabrics. Untreated. ① Note how woven, and lateral flexibility. ② Heat in oven to above 100°C and note if carbonized or embrittled. Treated. ① Note how woven, and flexibility allowed by treatment. (Cont'd) Signed This Sheet must be filed on completion of the work. | ||
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).