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 Ferodo Limited discussing the properties and application of Ferodo Fibre friction material.
| Identifier | ExFiles\Box 26\4\ Scan248 | |
| Date | 18th February 1924 | |
| X3209 X719 FERODO LIMITED. WIRES: "FRICTION, CHAPEL-EN-LE-FRITH". REGD TRADE MARK. TELEPHONES: 19 & 20 CHAPEL-EN-LE-FRITH. (2 LINES) FERODO FRICTION LININGS. CODES:- 5TH EDITION A.B.C. LIEBER'S. MARCONI INTERNATIONAL. WESTERN UNION FIVE LETTER EDS. Depots. LONDON 222, TOTTENHAM COURT ROAD. W.I. BIRMINGHAM 202, CORPORATION STREET. MANCHESTER 28, CATHEDRAL STREET. BRISTOL 19, PARK STREET. BELFAST 158, NORTH STREET. LEEDS 25, HUNSLET ROAD. GLASGOW 39, BOTHWELL STREET. LIVERPOOL 1-3, BERRY STREET. BRIGHTON 156A, WESTERN ROAD. MESSRS T.S.ARMSTRONG & CO LTD, NEWCASTLE ON TYNE, WORSWICK STREET, PILGRIM STREET. MESSRS HASLAM & STRETTON LTD, CARDIFF, 11, WINDSOR PLACE. MESSRS HASLAM & STRETTON LTD, SWANSEA, 33, ST HELENS ROAD. MR A.J. CRESWICK, SHEFFIELD, GATEFIELD. MESSRS F.W.HARRIS & CO, STOKE ON TRENT, MOORLAND ROAD, BURSLEM. MR SIDNEY HILL, COVENTRY, GODIVA STREET. NORTHERN MILL & MINE FURNISHING CO, CARLISLE, ANNETWELL STREET. Regd Office & Works SOVEREIGN MILLS, CHAPEL-EN-LE-FRITH, ENGLAND. PLEASE ADDRESS YOUR REPLY. DEPT. REF. FJF/DHL. YOUR REF. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG. 18th February, 1924 (Monday). Messrs Rolls-Royce Limited, Nightingale Road, DERBY. Dear Sirs, We have pleasure in acknowledging the receipt of your letter of the 15th inst., The order you refer to is not yet to hand. We note that the discs in Ferodo Fibre are to work under light unit pressure and at low speeds, and if the degree of heat generated by the friction surfaces is not higher than say 200° Fahr. the material, Ferodo Fibre, will be found to give excellent service, with a high coefficient of friction and a very low rate of wear. It can be held by rivets equally as well as Ferodo Bonded Asbestos, but the rivet heads should be countersunk so as to be well clear of the opposite metal surface, otherwise the friction heat in the rivet may char the portion of the lining immediately surrounding it. Ferodo Fibre is very largely used for the brakes of large power plants where the degree of heat is low, but is not admissible for automobile brakes. It will stand temperatures up to 280° Fahr, but this is too high for the safe working limit, when this material begins to char at that stage. fn. Yours faithfully, FERODO LIMITED Chief Engineer. | ||