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Aviation History
1936
1936 - 1726.PDF
JUNE 25, 1936. prominently displayed in various forms. Of particular interest will be control lable-pitch airscrew blades from hot pressings in both Duralumin and Elektron. The brass and copper pro ducts of the company will also be dis played. These consist of sheets, bars and tubes of a variety suitable for in numerable purposes, hot pressings and machining brass, riveting rod, and special alloys. All products are supplied to specification. Makers: James Booth and Company (1915), Ltd., Argyle Street Works, Birmingham, 7. ENGLISH STEEL CORPORATION (Stand 49).—On this stand will be shown numerous types of drop forgings as supplied to the leading aircraft and engine manufacturers, including crank shafts, airscrew shafts, hubs, flanges and bosses, cylinder barrels, connecting rods and aero engine parts and fittings. Special aero steels in bar form, both round and hexagon, precision ground to within very fine limits, will also form part of the exhibit. Makers: English Steel Corporation, Ltd., Vickers Works, Sheffield. Engine Parts THOS. FIRTH (Stand 86).—This stand will display a number of aero engine parts made from Firth-Brown special carbon and alloy steels. In teresting exhibits of this nature will include Napier Rapier and Dagger con necting rods, Bristol cylinders, and parts of Rolls-Royce and other engines, exhibited both in the form of rough drop-stampings and finished machined parts. Several special steels of tech nical interest will be included, one of which is the well-known Firth-Brown N.M.C. Steel, which has a co-efficient of expansion of the same order as that of aluminium and magnesium alloys, and is now extensively used for valve seats and and crank case and cylinder bolts. Makers: Thos. Firth and John Brown, Ltd., Atlas and Norfolk Works, Shef field, 1. FIRTH-VICKERS (Stand 81).—The stand of Firth-Vickers Stainless Steels, Ltd., will be planned to show the various- forms in which non-corrodible steels are available for aircraft construction, illus trated by actual examples of stainless steel fittings and structures. The steel products of the company may be divided roughly into three classes, the "Staybrite" group (8 per cent, nickel, 18 per cent, chromium) ; the 2 nickel, 20 chromium (S.80) steel group; and the 12 per cent, chromium steel group. A bewildering number of specifications covers these different steel products, and a special feature of fhe exhibit, which will be -of practical interest to all construc- tors, will be found on the back of the stand. It takes the form of a display board which clearly shows how sheets, strips, bars, drop-stampings, tubes and wire of different tensile strength, and be longing to the different families, are inter related as regards chemical analysis and mechanical properties. Makers: Firth- Vickers Stainless Steels, Ltd., Stavbrite Works, Sheffield, 9. . W. T. .FLATHER (Stand 38).—This exhibit will consist of certain parts pro duced from aircraft steels of the- com pany's manufacture, together with full details of the physical and chemical pro perties of all steels to the varying speci- rLIGHT. fications that are called for in general use by the R.A.F. and their contractors. There will also be a number of micro- photographs and other metallurgical details in connection with the same steels. Makers: W. T. Flather, Ltd., Standard Steel Works, Sheffield. A Film Show SAMUEL FOX (Stand 28).—Samuel Fox and Co., Ltd. (who are associated with United Steels), will be showing a film of the whole process of manufac ture and inspection of their "Diamet''- inspected steels. These steels are manu factured by the high-frequency electric melting process, which provides a method of making cleaner steels; there is no con tamination by sulphur from the furnace gases as with the crucible process, nor carbon as in electric-arc furnaces. The analysis and temperature are under pre cise control and there is a greater con servation of the alloying elements than with any other process. The film will be supplemented by a demonstration, given by a member of the metallurgical staff, of .the method of determining the ' cleanness" of steels. Makers: Samuel Fox and Co., Ltd., Stocksbridge Works, near Sheffield. GLACIER METAL (Stand 54).— Bearing metals are the speciality of the Glacier Metal Co., Ltd., and the exhibit will consist of white anti-friction metals for the lining of bearings of all types of aero engines; finished machined steel- backed and bronze-backed white-metal- lined bearings for camshafts, crankshafts, connecting-rod big ends, water pumps, etc.; steel-backed lead-bronze and copper- lead-lined bearings for all types of engine location; finished machined phos phor-bronze and gunmetal bushes; chill- cast phosphor-bronze cored and solid sticks; and finished machined connecting rods. Makers: Glacier Metal Co., Ltd., Alperton, Middlesex. HABERSHON (Stand 62).—This firm will show examples of the hot- and cold- rolled strip steel which they supply in large quantities for aircraft work. Makers: J. J. Habershon and Sons, Ltd., Rotherham. HIGH DUTY ALLOYS (Stand 22).— Manufacturers of the " Hiduminium " RR. series of high-tensile aluminium alloys, this firm will show a comprehen sive range of castings, forgings and stampings in their materials. Cylinder heads, cylinder barrels, pistons, connect ing rods, crankcases, cylinder blocks, supercharger rotors, etc., will be shown as typical of the many applications of " Hiduminium " alloys to the engines of Armstrong-Siddeley, Bristol, Cirrus- Hermes, De Havilland, Napier, Pobjoy, Rolls-Royce, Wolseley, etc., and many of the continental manufacturers. Also exhibited are examples of a stamping and a finished blade for the De Havilland controllable-pitch airscrew. A group of castings and stampings in the '' Magnu- minium " series of magnesium-base alloys, of volute casings, timing covers, tappet guide locating rings, breather pipe flanges, etc., will also be exhibited. These are produced by High Duty Alloys' associate company, Magnesium Castings and Products, Ltd. Makers : High Duty Alloys, Ltd., Trading Estate, Slough. NORTHERN ALUMINIUM (Stand 14).—Various typical extruded sections in the firm's NA.17ST, NA.24ST and 701 NA.22ST alloys will be samples from consignments now being supplied to the British aircraft industry. There will also be on display castings in NA.350, NA.225, NA.125 and NA.162 alloys. In addition, the exhibit will include samples of Alclad NA.17ST and Alclad NA.24ST sheet, and the company also anticipate showing various built-up aircraft sec tions. Makers: Northern Aluminium Co., Ltd., Bush House, London, W.C.2. STERLING METALS (Stand 37).— This exhibit will feature the application of Elektron magnesium castings for stressed components in aircraft engines and airframe structure. It will also show a comprehensive range of permanent mould castings (gravity die-castings), which will illustrate the tremendous strides which have been made in the technique of permanent mould castings in Elektron magnesium. Various alumi nium castings will also be shown. Data and micro-photographs will illustrate the heat treatment of Elektron, and samples will show the deformation which is pos sible on heat-treated castings without cracking. Makers: Sterling Metals, Ltd., Foleshiil, Coventry. STONE (Stand 75).—Exhibits on this stand will consist mainly of aircraft parts in the form of castings, die castings, forgings and stampings in light alloys. There is a particular displaj' of such parts in Ceralumin High Tensile Aluminium' Alloy, covered by D.T.D. specifications 2 5°' 255. 2&7 and 293. Another inter esting exhibit will be of aircraft parts in Elektron Magnesium Alloys, which are 40 per cent, lighter than aluminium. It is fitting that the company's exhibit will include examples of work in special bronzes, for which Stone's have enjoyed a wide reputation over many years. Makers: J. Stone and Co., Ltd., Dept- ford, London, S.E.14. Tubular Work REYNOLDS TUBE (Stand 7).—In the main, the display at this stand will consist of both steel tubing and alumi nium alloy products. A complete welded engine nacelle will be shown; the com pany is now specialising in this class of work. Samples of steel tubing to all specifications, both round and sectional, together with various manipulated tubes, will also be exhibited. There will be examples Of manipulation of tubing and sections in aluminium alloy, together with samples of special extruded sec tions now employed in the majority of metal aircraft designs. A special display will be made of such sections and machined bars in Hiduminium RR. 56 aluminium alloy. Makers: Reynolds Tube Co., Ltd., Tyseley, Birmingham. Parachutes G.Q. PARACHUTES (Stand 35).— This year the G.Q. Parachute Com pany will be exhibiting the Parasuit, which, as its name implies, is a neat and ingenious combination of parachute and flying suit. In order that such a suit should be practicable it has been neces sary to develop a framcless and flexible pack which is only i^in. in thickness. This enables observers and gunners to be constantly connected to their parachutes —a desirable thing in case of serious emergency. The suit incorporates a gas- inflatable lifebelt. Makers: G.Q. Para chutes, Stoke Road, Guildford, Surrey.
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