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 Thos Firth & John Brown Ltd detailing stress tests on experimental springs for a Bentley car.
| Identifier | ExFiles\Box 87\4\ scan0060 | |
| Date | 12th March 1935 | |
| THOS FIRTH & JOHN BROWN LTD INCORPORATING THE WHOLE OF THE UNDERTAKING OF THOS FIRTH & SONS LTD AND THE STEEL BUSINESS PREVIOUSLY CARRIED ON BY JOHN BROWN & CO LTD ATLAS & NORFOLK WORKS SHEFFIELD, 1 Telephones: ATLAS & NORFOLK WORKS SHEFFIELD 20081 (11 LINES) TINSLEY WORKS SHEFFIELD 41193 SCUNTHORPE FOUNDRY SCUNTHORPE LINCS 22 Telegraphic Addresses: FIRTH SHEFFIELD ATLAS SHEFFIELD London Office 8, THE SANCTUARY WESTMINSTER, S.W.1 Telegraphic Addresses: MESMERIC, PARL, LONDON ALDWARKE, PARL, LONDON Telephone Number: 8310 VICTORIA Codes: PRIVATE A.B.C. 6th EDITION, BENTLEY'S 1912 & 1929, LOMBARD, MARCONI, WESTERN UNION 5 LETTER. REGISTERED OFFICE: ATLAS WORKS, SHEFFIELD YOUR REFERENCE Hs{Lord Ernest Hives - Chair}/LES.11/KW. OUR REFERENCE WHICH PLEASE QUOTE HWP/7/35. Spring Dept, Tinsley. 12th. March. 1935. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Sirs, Stresses in Experimental Springs for Bentley Car. For the attention of Mr. Leslie. In answer to your letter of 11th inst., we have pleasure in submitting hereon the information you desire. | Our Print | | Range of stress, Tons per sq. inch. | |---|---|---|---| | | | Static Position | Max Bump Position | | No.121. - 5 Plate Front Springs | | 35.7. | 48.7. | | " " " Rear " | | 37.4. | 48.9. | | 122 or 122A. 4 Plate Front " | | 37.7. | 52.3. | | " " " " Rear " | | 39.1. | 51.87. | | No.123. 3 Plate Front " | | 39.6. | 55.9. | | " " " Rear " | | 31.6. | 56.3. | Yours faithfully, THOS. FIRTH & JOHN BROWN LTD., H.W. Porter for Director. | ||