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).
Composite metals for high-efficiency contact tips in electrical apparatus.
| Identifier | ExFiles\Box 168a\2\ img428 | |
| Date | 25th April 1939 guessed | |
| Traction gear contacts. Right : Standard copper contact; Left : Copper contact faced with Copelmet. Equal conditions of service COPELMET, SILVELMET and SILMO are composite metals for high efficiency CONTACT TIPS for electrical apparatus employed where conditions are severe and arduous. Properly applied, they give a contact life many times that of copper and are in some cases indispensable. Whether the switchgear or controlling apparatus be oil or air-break, we should at any time be pleased to arrange for one of our engineers to investigate your problems and advise thereon. Transformer tap-changer contacts. Left : Standard Copper; Right : Copper contact faced with Copelmet. Equal conditions of service. | ||