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).
Letter from Diamond Fibre Coy. Ltd. detailing the properties and uses of Condensite Celeron.
| Identifier | ExFiles\Box 39\3\ Scan011 | |
| Date | 31th May 1919 | |
| F.{Mr Friese} N. MacEchern, MANAGER. x5573 TRADE MARK. DISFICO Diamond Fibre Coy. Ltd 57 & 59, OLD STREET. LONDON E.C.1 TELEPHONE CITY 6883. FACTORIES: ELSMERE, DEL. U.S.A. BRIDGEPORT, PENN. CONSHOHOCKEN, PA.{Mr Paterson} CHICAGO, ILL. LONDON, ENG. MANUFACTURERS OF HARD & FLEXIBLE FIBRE FOR ELECTRICAL INSULATION & MECHANICAL PURPOSES. MADE IN SHEETS, RODS, TUBES, WASHERS, DISCS AND SPECIAL SHAPES. TELEGRAMS AND CABLES DYMOFYBER LONDON. CODE A.B.C. 5TH ED.{J. L. Edwards} ESTABLISHED 30 YEARS. 31st., May, 1919. Dear Sirs, CONDENSITE CELERON is a hard, tough, homogeneous material, non-hygroscopic, absorbing less than 0.8% water on a 24 hour immersion. Insoluble in all of the ordinary organic solvents. Possessing a dielectric resistance of 700 and 1,000 Volts per Mil. Tensile strength of approximately 12,000 pounds per square inch, and is able to withstand a temperature of 300 F.{Mr Friese} without deterioration. 300°F = 149°C Merchantable forms of Condensite Celeron are sheets and tubes. Standard size of sheets are 36" x 40" or 17" x 20", varying in thickness from 1/32" to 2". Colour - natural and black. We have a complete machine shop, with every facility for engineering and mechanical problems, enabling us to machine and work Condensite Celeron into all the many commercial forms and various oddshapes. The smooth bright finish of our material gives an excellent high grade insulating material of exceptional value and merit. CONDENSITE CELERON with canvas base is especially adapted for the manufacture of gears, or in places where shock is of prime importance. Condensite Celeron, canvas base is only offered to the trade in the Natural Colour. Trusting we may have hear further from you relative to this material. We are, Yours faithfully, DIAMOND FIBRE COMPANY. LTD. DIRECTOR. | ||