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Aviation History
1940
1940 - 1006.PDF
APRIL 4, 1940 THE INDUSTRY The new G.E.C. fluorescent mercuryvapour lamp. New G.E.C. J-amp A NUMBER of aircraft engineersrecently had the opportunity of examining and testing a new lamp whichthe General Electric Co., Ltd., is market- ing.Instead of having the pear shape of the tungsten filament lamp, this newlamp takes the form of a long tube; actually it is five feet long. It is filledwith mercury vapour and the inside of the glass lined with fluorescent powders.Such a combination conduces to light being spread over a large area withoutthe slightest suggestion of glare. More- over the lamp provides a light veryclosely akin to natural daylight. Such illumination, well diffused andshadowless, and with a similitude to day- light, will facilitate numberless processesto which aircraft engineers have to apply themselves. Particularly is this the casewhere fine assembly work and instrument adjustments are concerned. Another important advantage is theeconomic factor. This new lamp is rated at 80 watts—it is available for use onA.C. mains only—but it gives as much light as a 200 tungsten filament lamp.This means more light without increased current cost or the same quantity oflight (of a better quality) at a third of the operating cost. Special fittings have been designed forthis lamp and these fittings possess re- flective properties and contours whichensure the maximum distribution of light either for local illumination or for large:areas. Viewers' Meeting AT the annual general meeting, held inLondon yesterday, the chairman, Mr. A. A. Jamieson, reviewed the activi-ties of the various operating companies constituting the Vickers group. When referring to Yickers-Armstrongs,Limited, he said, among other things: "Great extensions have been and arebeing made to the Company's manu- facturing facilities, but in spite of theseVickers-Armstrongs could not have at- tained the measure of success in outputwhich they have achieved had they not adopted the policy of sub-contracting ona large scale. Complete components of such products as gun mountings andaeroplanes have been sub-contracted, and I should like to take this opportunity ofthanking the hundreds of firms who are acting as sub-contractors to us for theexcellent work they are carrying out. There have been criticisms of sub-con-tracting, but I can assure you tha', although initial difficulties were encoun-tered, our own experience has been satis- factory. "There are many sides of this Com-pany's activities of which, if I were free to do so, I should like to tell you andof which you would hear with pride, but there are two matters to which 1 canrefer. H.M. Ships Ajax, Cossack and Ursula, which have taken part in out-standing naval engagements, were built in the shipyards of this Company, and 1believe as finely built a.p they were finely handled. Two types of aeroplanes—the Wellingtons and Spitfires—were designed and produced by our AviationSection and the stockholders may well be proud of the high reputation of thesemachines." Later in his speech, when dealing withthe group as a whole, Mr. Jamieson spoke with pride of the effort which was beinujmade by the concern to keep pace with the required production. His actualwords were : '' The Group is working at full pressure with one thought uppermostin the minds of each individual, namely, to do his or her utmost to win the war.The whole organisation is working under great strain, but I see no signs whateverof the strain being 1oo great or the burden too heavy." A final dividend of six per cent., lessincome tax, was declared, making ten per cent, for the year, and a. sum of^480,187 carried forward to the next account. r • . • . • Phoenix Compacta A NEW item of workshop equipmenthas been added to the extensive range already marketed by E. H. Jones(Machine Tools), Ltd., by the introduc- tion of the Phoenix Compacta. Thisconsists essentially of a tool cabinet the top of which forms a work bench andhas already fitted a swivelling motor, toolrest and vice. The Compacta has been designed for iuse in either large or small shops, and as an accessory in the repair hangar itshould be invaluable. The swivelling motor enables many different operationsto be carried out efficiently, such as bur- ring, polishing, drill grinding, file finish-ing, French polishing and linishing. Manufactured from sheet steel through-out, crevices and corners have been avoided so that dirt does not collect, andthe door which closes over the drawers is provided with a Yale lock. Thedimensions are:—Height 36m., width io.£in., depth 15m. The motor is £ horsepower. • Lincoln Electrode TN addition to their standard Mangan--*- weld electrode, Lincoln Electric Com- pany, Limited, Welwyn Garden City,Herts, have now produced a high man- ganese electrode designed for building up ]worn manganese steel parts of the 11 1 to 14 per cent, manganese type. "The •structure of the deposit and its wear- ; resisting properties are claimed to be 1equal to those of heat-treated cast man- '; ganese steel. v The new electrode, called " Mangan-weld B," possesses alloys in addition to its high manganese, so as to make theweld aii-toughening, i.e., remain in the austenitic state, and retain carbides in :solution, even on air cooling. The hard- '_ ness of the deposited weld metal is160-180 Brinell and will rapidly cold work to a hardness of 444 to 534 Brinell.. Surfaces to be built up should first he ground free of all rust and spongy ordefective material and the metal deposited in pads ^in. to iin. wide, pre-ferably no more than 3m. in length, using a semi-circular weaving motion. This new electrode is available in two <sizes, -f^in and jin. NEW COMPANIES BROXBOURNE AIRCRAFT EQUIPMENT COMPANY,LTD.—Private company. Registered March 16. Capital ^1.000 in £i shares. Objects: To carryon the business of aircraft constructors and equip- ment manufacturers, etc. The directors are:Sydney Craft, 8, Ashtead Road, N.16, aeronautical electrical engineer; Major Thomas J. Graham, 10,Hillcrest Road, Purley. Registered office: n<). Bishopsgate, E.C. AERONAUTICAL PATENT SPECIFICATIONS * (.Published March 28, 1940.) - - ;. I9'8 12378. WYNNE, J. N., and NORTH BRITISH RUBBERCo., LTD. Apparatus for preventing ice formation on or de-icing the exposedsurfaces of aircraft (518.463). 15065. GAZDA, A. Projectiles (518,545)- 1810. BRISTOL AEROPLANE CO., LTD., and tRisE,L. G. Construction of aeroplane wings. The Compacta is a tool chest and work bench combined. 18425. 20352. 24880. 24926. 25153- 25325. STANDARD TELEPHONES AND CABLES, LTD.Apparatus for determining the speed, course, position, or distance moveothrough by a moving vehicle on land or water or in water or air (5i8,54"l- YOUNG, F. S. Nose and tail fuzing m\for use in connection with aircraft bonio- release gear and the like (518,514!-AIR-EQUIPMENT. Retractable lanoing- gear for aircraft (518,414)- , T VERF.INIGTE DEUTSCHE METALLWERKE AKI-GES., FAUDI, F. (trading as.Fa udi, *•• (Firm of), and TOENNIS. E. Aircranlanding-gear (518,418). ELEKTRON-CO. GES. Control valve arraWjments with automatic return, ot if & tudinally-movable control members whydraulic installations for movins si™, tural parts of aircraft (5i8,55"J- . > TENNINT, W. J. (AVIATION PATENTS, INWJ Aeronautical propeller blades, f methods of locating the P'tch,*»L). variable-pitch propeller blades >«•"-
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