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 Jonas Woodhead & Sons providing specifications for Humber Snipe road springs.
| Identifier | ExFiles\Box 154\2\ scan0062 | |
| Date | 18th January 1938 | |
| 1306- JONAS WOODHEAD & Sons, LTD., MANUFACTURERS OF LAMINATED SPRINGS FOR ROLLING STOCK ROAD OR RAIL TRADE MARK REGISTERED. TELEPHONES: LEEDS 20814 AND 20815. (PRIVATE BRANCH EXCHANGE) LONDON MAYFAIR 4541 REG'D OFFICE AND WORKS: KIRKSTALL ROAD, LEEDS, 4. LONDON OFFICE: DEVONSHIRE HOUSE, STRATTON STREET, W.1. ON ADMIRALTY, WAR OFFICE COLONIAL AND ALL LISTS ESTABLISHED 1850. TELEGRAMS: "FORGE, LEEDS" CODE: 5TH. EDITION A.B.C. TELEGRAMS LONDON "JOWOS" PICCY LONDON Messrs.Rolls-Royce Limited, Nightingale Road, D E R B Y. DATE 18th January,1938 YOUR REF. Rm{William Robotham - Chief Engineer}/Les.8/MH{M. Huckerby} OUR REF. THS/BMM Dear Sirs, DEFLECTION OF ROAD SPRINGS.? We have your favour of the 11th instant in connection with the above, and in reply thereto, would answer categorically your questions regarding Humber Snipe springs as follows: (1) The bump deflection on the front would be on the steering arm, and it would require about 4" deflection of the spring to hit this. On the rear, between the axle and the rubber buffer there is 4". Both these positions are with the car unloaded. (2) We cannot quite understand what you mean by total axle movement, as the figure we have given you above, represents the movement before fouling. (3) The thickness of the main plate on the front, is No.5. B.W.G. and on the rear, 1/4". (4) The number of plates in the front is 14, and the number of plates in the rear is 8. We trust the above information meets your requirements. | ||