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 discussing the manufacture of brake discs, a squeak test rig, and spark marking equipment.
| Identifier | ExFiles\Box 141\2\ scan0307 | |
| Date | 7th July 1939 | |
| 1180 All Communications to be addressed to the Company FERODO LIMITED TELEPHONE: 250 CHAPEL-EN-LE-FRITH TELEGRAMS: FRICTION, PHONE, CHAPEL-EN-LE-FRITH. FERODO REGD. TRADE MARK BRAKE & CLUTCH LININGS CODES: WESTERN UNION FIVE LETTER EDITION, BENTLEYS COMPLETE & 2ND PHRASE, MARCONI INTERNATIONAL, LIEBER'S CODE, LIEBER'S LATEST CODE, A.B.C. 5TH & 6TH EDITIONS. CHAPEL-EN-LE-FRITH, STOCKPORT, ENGLAND. 7th July, 1939 YOUR REF. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}1/JH OUR REF. WES/PW. Depots- LONDON 222, TOTTENHAM COURT RD W. 1. ABERDEEN 26, GUILD STREET. BELFAST 8, 10 & 12, MONTGOMERY ST BIRMINGHAM 198, CORPORATION ST BRISTOL 118, VICTORIA STREET. CARDIFF 60, CHARLES ST DUBLIN 120, UPPER ABBEY ST GLASGOW 70, WATERLOO ST LEEDS 25, HUNSLET RD LIVERPOOL BERRY STREET. MANCHESTER 16, JACKSON'S ROW, DEANSGATE. NEWCASTLE-ON-TYNE 23, ELDON PLACE, BARRAS BRIDGE. Messrs. Rolls-Royce Ltd., Experimental Department, Derby. For the attention of J.B. Dixon Esq. Dear Sirs, We thank you for your letter of the 6th instant, and the VG.100 discs are already being manufactured to the method agreed on over the telephone. With regard to the squeak test rig, we would confirm that as the old test room must be cleared as quickly as possible this rig has been dismantled and brought down to our new Test Department. Re-erection of the rig is, however, already in hand and an independent test bed on order so that this rig can now be used as a completely independent unit from the remainder of the test equipment. This work is being urged as much as possible and we will inform you as soon as it is again ready for running. We also have to thank you for your notes on the use of one of your standard ignition coils for the spark marking of paper strip. We realise that these coils are designed for service with a low tension pressure of 12 volts but we wonder whether this might be stepped up slightly without damaging the coil, with a view to obtaining a still higher voltage on the high tension side. The writer was somewhat apprehensive that the spark might wander and therefore intended placing the electrodes so that they were practically in contact with the paper. We know that this spark marking is successfully used and we are certain that instrument makers will be able to put us on the track of the right kind of paper strip. Yours faithfully, FERODO LIMITED. W.E.Shilton Manager, Technical Department. | ||