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).
The comparative testing of insulating materials named Elo, black Mouldensite, and brown Mouldensite.
| Identifier | WestWitteringFiles\I\September1922\ Scan67 | |
| Date | 10th August 1922 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No PB45. Customer's No. X1109 Tests on Insulating Materials The following comparative tests were carried out on specimens of Elo, black Mouldensite, and brown Mouldensite. Three tests were made: 1 Hardness. 2 Amount of water absorbed. 3 Effect of high temperatures. (1) By cutting, and rubbing the different samples, one against the other, Elo appeared to be harder than black Mouldensite, and black Mouldensite harder than brown. (2) The three specimens were then immersed in water for 140 hours, their weights being taken before and after immersion with the following results. Signed Cont'd.{John DeLooze - Company Secretary} This Sheet must be filed on completion of the work. | ||