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. discussing damper production and valve experiments.
| Identifier | ExFiles\Box 152\2\ scan0041 | |
| Date | 5th October 1937 | |
| 1293 PATENTEES AND MANUFACTURERS OF THE "ARMSTRONG" SHOCK ABSORBER, ETC. ETC. The ARMSTRONG'S PATENTS Co. Ltd. EASTGATE BEVERLEY YORKS. TELEPHONES: BEVERLEY 410 AND 411 TELEGRAMS: ARMSTRONG PATENTS 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 R.LEGGOTT ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS OUR REF. GA/VS{J. Vickers}/1 YOUR REF. RmWLes8/R DATE 5th. October 1937 Mr. Leslie, Roll-Royce, Ltd. DERBY. Dear Mr. Leslie, I thank you for your letter of the 4th. instant, calling for 24 dampers to the various numbers. We are having these parts put in production immediately and look forward to receiving your machine castings for part of this quantity. We are making a special effort to let you have the first set of four dampers as soon as it is possible to get the parts. We consider it would be quicker to have the levers made from hand forgings, than to have dies made for these and we are therefore working on these lines. Regarding the replenishing valves we are trying out one or two experiments with our own valves with a view to increasing the size, as we have an idea that the ones that have been giving you trouble are the first ones, that have been altered to the enclosed sketch. now. Unfortunately, after looking at the drawing of your shock absorber, we have been compelled to come to the conclusion that we have not sufficient length in our piston to accomodate this type of valve, but we can see no reason why the larger valve made on the lines of the enclosed drawing should give any trouble, as it is impossible for the ball to get to the other side of the spring. It would appear from your observations of the oversize bore of the cylinders, that our recuperating valve is not quite large enough to do the work under extreme conditions and it is for this reason that we are experimenting Contd................... | ||