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Aviation History
1956
1956 - 1698.PDF
860 FLIGHT, 30 November 1956 Airless-spray painting equipment' (see item below) in use at the Martin works in Baltimore. In the background is a B-57. THE INDUSTRY Dowty Group Report TN his statement circulated to shareholders attending the Dowty •*• Group's second annual general meeting at Cheltenham on November 19, Sir George Dowty, F.R.Ae.S., the chairman, said that during the year an expansion programme larger than in any previous year had been carried out, and the benefit of this expendi- ture would be derived in the future. There had been a decline in the Group's overseas aviation activities, and there were indica- tions of a reduction generally in military aviation orders; but other fields of activity could do more than redress any reduction likely to be sustained through a curtailment of aviation business. Dowty Seals, Ltd., continued to expand, and it was gratifying to note that the Remploy factory sponsored at Bristol was now in full operation, with satisfactory results. Dowty Fuel Systems, Ltd., had increased its research and development facilities and was now in a stronger technical position than ever before. A new turbojet test bed had been completed, and the company had obtained contracts for complete systems on some of the latest aircraft powerplants. Dowty Nucleonics, Ltd., was now firmly established. Group profits amounted to £1,497,641 before taxation, com- pared with £1,492,027 for the previous year. After adjustments and providing for taxation of £718,020 the net profit was £777,171, which was £58,404 greater than last year's. Airless Spray Painting pAINT application by airless spray, a method in which the -*- paint is heated to a very high temperature, then atomized by hydraulic pressure instead of by compressed air, was evolved in the U.S.A. by James A. Bede, president of the Bede International Development Co., of Cleveland, Ohio. In this country, sole manu- facturing and distributing rights for airless spray and all other Bede equipment are retained by T. C. Spray Finishing Systems, 5, St. James's Place, London, S.W.I. Several advantages are claimed for the technique. One is that, because the air movement is small, the only ventilation required in the spray booth is to carry away the solvent fumes. Another is that the surface finish can be improved, a heavier film-thickness of paint being achieved in one operation. Also, when mainten- ance painting has to be done on parts in situ, a heavier and more durable finish can be obtained without the risk of paint being blown on to surrounding areas. Recording Magnetic Flaw Detection A METHOD of recording the results of magnetic flaw detection **• has been developed by Industrial Tapes, Ltd., Speedfix House, 142/146 Old Street, London, E.C.I, in association with Radalloyd, Ltd., King Street, Leicester. It is said to be both quick and inexpensive. The part or weld under examination is covered with a variety of Speedfix tape specially developed for the process. This has a white surface, which is coated with a special detector ink. The part is then placed between the jaws of the flaw detector, the magnetic flux producing the flaw pattern in the usual manner. At this point the picture of the flaw is covered with a medium known as Speedfix Vinyl No. 12 transparent, which fixes the ink and provides a permanent picture of the flaw pattern for study, comparison with existing records, or filing. Other tapes have been developed for non-destructive surface- flaw detection on non-magnetic materials. Speedfix Vinyl No. 15 (black hard mix) is used in conjunction with fluorescent penetrants. • — > IN BRIEF Tannoy Products, Ltd., Norwood Road, West Norwood, Lon- don, S.E.27, have produced a loud-hailer, the Hey-loh, which weighs only 3 lb including batteries. Transistors are used throughout and an amplification power of over 100 times is claimed. * * * Mr. J. H. Hutchinson, A.M.I.Mech.E., has been appointed assistant engineering sales manager by the Hymatic Engineering Co., Ltd., Redditch, Worcs. He joined the company after serving in the R.A.F. as an engineer officer. At Hymatic he has carried out design-studies for new applications of pneumatics; he was made project engineer in the sales department in 1952 and later became senior project engineer. * * * British Nylon Spinners, Ltd., have produced an attractive and informative booklet, Nylon Knows the Ropes, which describes the history and achievements of nylon, including its uses in aviation— for glider and target tow-ropes, and for parachute cords and canopies. * * * Mr. Tony Lacey, formerly with D. Napier and Son, Ltd., has been appointed to the publicity department of the Fairey Aviation Co., Ltd., at 24 Bruton Street, London, W.I, where he will assist Mr. Derek O. Thurgood. * * * Mr. Brian Maxwell-Muller has joined Smiths Aircraft Instru- ments, Ltd., as a senior technical sales representative and will be responsible for the sale of civil aircraft equipment. He was formerly with Vickers-Armstrongs (Aircraft), Ltd., at Weybridge and the Hasler Telegraph Works, Ltd. * * * Sixteen undergraduate apprentices employed at the Weybridge works of Vickers-Armstrongs (Aircraft), Ltd., began studies for degrees in engineering subjects at various universities this autumn. The company is continuing to develop this section of its apprentice-training scheme, which is aimed at giving the best possible training facilities to youths of high calibre who hope eventually to qualify for senior posts in the industry. These two items are products of a firm which has been manufacturing electrical machinery since 1882. Above is an aircraft transformer, with independent D.C. outputs of 320 W of 600 v 0.54 amp and 90 W at 300 v 0.30 amp for a D.C. input of 26.5 v 23 amp at 5J00 r.p.m.; weight is 14 Ib. The lower illustration shows a radar motor alternator to spec. K.114B. The makers are W. Mackie and Co., Ltd., 129/137 Lambeth Road, London, S.E.I.
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