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 an environmental exposure test on 'Maconite' H.T. ignition cable.
| Identifier | ExFiles\Box 168\1\ img031 | |
| Date | 11th May 1926 | |
| RR 238 (150 BKS) (SHST.29-6-20.) MP 224358 X3860 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.B. Order No. WB{Mr Brazier/Mr Bell}84 Customer's No. X Date: 11 - 5 - 1926 "Maconite" H.T. ignition cable A sample of the above cable has been placed outside exposed to the atmosphere and light rays. Light and atmospheric oxidation produces a fundamental change in the chemical and physical properties of rubber, causing it to deteriorate and become hard, brittle and resinous consequently inelastic. It will be interesting to observe how Maconite behaves under such conditions, as it is Signed: contd This Sheet must be filed on completion of the work. | ||