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 Armstrong's Patents Co. Ltd. regarding a shock absorber blow-out issue and subsequent design modifications.
| Identifier | ExFiles\Box 152\1\ scan0351 | |
| Date | 11th June 1937 | |
| 1293 PATENTEES AND MANUFACTURERS OF THE 'ARMSTRONG' SHOCK ABSORBER, ETC. ETC. The ARMSTRONG'S PATENTS Co. Ltd. DIRECTORS MAJOR MACINDOE, M.C. CHAIRMAN GEO. R.{Sir Henry Royce} JOHNSTONE, MANAGING DIRECTOR GORDON ARMSTRONG, A.M.I.A.E., F.INST. PAT. R.{Sir Henry Royce} R.{Sir Henry Royce} LEGGOTT ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS EASTGATE BEVERLEY YORKS. TELE [PHONES BEVERLEY 410 AND 411 GRAMS ARMSTRONG PATENTS] OUR REF. FB/VS{J. Vickers}/7 YOUR REF. DATE 11th. June 1937 Messrs. Rolls, Royce, Ltd. DERBY. For the attention of Mr. Leslie. Experimental Dept. Dear Sir, With further reference to our telephone conversation this afternoon, we are enclosing herewith a supply of cork for making a new packing. It has occurred to us, that this blow out may have been caused through having too much oil in the shock absorber. We are not supposed to fill the shock absorber more than 3/8" from the top of the lid{A. J. Lidsey}, otherwise at a high temperature, the pressure is much too high for the gasket. You will notice on the new lid{A. J. Lidsey} drawing enclosed herewith, that we have taken the metal down inside the lid{A. J. Lidsey}, so that the shock absorber cannot be filled to more than 3/8" from the top. We have reduced the filler plug diameter to 3/8" and we shall therefore have at least 9/16" of thread, which should be ample. Yours faithfully, p.p. ARMSTRONG'S PATENTS CO. LTD. Y Bogg | ||