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Aviation History
1939
1939 - 0304.PDF
ii4 FLIGHT. FEBRUARY 2, 1939 AIRPORTS EXHIBITION (CONTINUED) Other features of the display on Stand 17 include Blackhawk socket wrenches, Cleve land drills, Driver drill presses, various Porter shear jaw cutters, Starrett wrenches and Stanley products. B.E.N. Patents, Ltd. (Stand 8), 3537, Upper Thames Street, London, E.C.4.—The exhibits on this stand are representative of the company's well-known range of'machines and equipment for the efficient spraying of aeroplane dopes, synthetic enamels, lacquers, etc. Of special interest is the B.E.N. " Pneu- Spray," a portable spraying machine de signed to operate one B.E.N, type DC or G spray gun continuously. Compressor, receiver and motor are mounted on a sub stantial steel base fitted with rubber-tyred caster-steering wheels. Regulation of spray ing pressure to suit the density of the material is by means of a special unloader, which also allows the machine to run idle when the gun is not in use. Another exhibit is the new B.E.N. " Varispray," a high-speed production gun capable of handling all classes of spraying materials, giving, it is claimed, perfect atomisation with maximum speed of coverage. It incorporates a simple control whereby the operator can vary the width of the spray and change it from Ian to round form with out interrupting the spraying operation. The " Varispray " gun is well balanced and com fortable to handle. Boulton and Paul, Ltd. (Stand 22), Norwich.—This exhibit will be on similar lines to that staged at the last Airports Ex hibition, and will consist of a series of photographs illustrating buildings and equip ment which the firm has supplied for aero dromes during recent years. Joseph Bradbury and Sons, Ltd. (Stand ?4), Braintree, are showing some items of specialised aircraft and aerodrome service equipment typical of the range they manu facture to manufacturers' own designs and specifications. These will include : — (1) The G.E. patented aircraft lamp, made from high-grade materials and with an effective height range of from 2ft. to 17ft. din., from the ground. The reflector is adjustable for any position and at any angle. (2) A portable bench for use on the aero drome, to take a range of small tools, for adjustment and repairs to aircraft. (3) An engine stand typical of the wide range of such equipment manufactured for this purpose. British Bitumen Emulsions, Ltd. (Stand 2), Trading Estate, Slough, are specialists in the stabilisation of soil for the construc tion of aerodrome runways, car parks, etc. Demonstrations are made showing the Treatment of Prestwick Aerodrome (Scottish Aviation, Ltd.) by " Lornix " soil stabiliser, which has been applied by pressure from a distributor on the back of the tractor seen in the photograph. In the background is a grader mixing the soil after treatment. (British Bitumen Emulsions, Ltd.—Stand 2.) tH • W » Aircraft jacks by Brown Brothers, Ltd. (Stand 26.) strength ana hygroscopic properties of soil in an unstabilised state compared with that which has been stabilised with " Lomix." Actual samples of stabilised soil from work that has been carried out are also on view. A display of photographs shows soil stabilisation operations at different stages. In addition, various samples of " Bitu- proof " products for wateiproofing work are shown—there is a model air-raid shelter which has been waterproofed and insulated with the company's products. Samples demonstrating the use of " Elisol " for protection against condensation and lor thermal and sound insulation are also on view. The British Thomson-Houston Co., Ltd. (Stand 16), Crown House, Aklwych, London, W.C.2.—The exhibits on the stand of the British Thomson-Houston Company com prise a representative range of Mazda and Mercra lamps, together with B.T.H. light ing equipment. There is a range of 6- and 12-volt Mazda lamps in various wattages ranging from 2.4 to 36, for the lighting of cabins, instrument boards, etc. A special group of low-voltage, high-wat tage lamps has been developed for use in landing lights. All Mazda aircraft lamps comply with Air Ministry regulations. There is an extensive range of Mazda pro jector lamps available, and particular atten tion is directed to line filament lamps, which, owing to the form of the filament, are eminently suitable for certain types of equipment. iMercra lamps, by reason of their extra ordinary high efficiency, are particularly suitable for the economical lighting of large interiors, such as hangars and aeroplane workshops. They are made in four wattages —400, 250, 125 and 80 watts, and in the usual supply voltages of 100/130 and 200/ 260. They am, of course, only be used on alternating current and in combination with chokes. The 80-, 125- and 400-watt Mercra lamps (200/260 volts) can also be supplied with fluorescent bulbs. These are suitable for the lighting of workshops and other interiors where good colour rendering is important. There is a wide range of B.T.H. equip ment available, and the new B.T.H. Mazda- lux " Ten " projector for " apron " light ing is perhaps the most interesting. This projector has been specially designed for this type of lighting and its optical system is claimed to be such that all glare is obviated. High-quality reflectors for the interior light ing of hangars and workshops are also shown, together with other small fittings for localised lighting. British Unit Heater and Radiator Co. (Stand 47), 3, Victoria Street, London, S.W.i.—This company is exhibiting a range of " Copperad " unit heaters, which products are very extensively used for the heating of aerodromes and similar buildings. They are particularly adaptable for this purpose, since the heaters are placeVj at high level, mounted on the roof trusses, and warm air- is blown downwards, so providing a very rapid warming up of the building. " Copperad " unit heaters are manufac tured for operation on steam, hot water or electricity, and they are offered in a very wide range of sizes, having outputs from 20,000 to 300,000 B.T.U.s per hour, according to requirements. The unit heaters can be fitted with Buxton-tested flame-proof motors for dope shops and similar buildings. Brown Brothers, Ltd. (Stand 26), B rowns Buildings, Great Eastern Street, London, E.C.2, are specialists in modern equipment for the speedy execution of aerodrome and work shop services. At each of their twenty-six distribution centres throughout the country technical experts are immediately available for maintenance service and to offer advice in the selection of new or the replacement of obsolete gear. A catalogue lists a large range of workshop equipment always held ready for immediate delivery. Amongst the items to be found in the list, and of which a representative range is exhibited on this stand, will be found the following: "Aerojacks " (aircraft adjustable stands), air compressors, battery main tenance equipment, benches and bench legs, B. and D. workshop, clothing, degreasing plant, drills and drill stands, electric polisher, electric and pneumatic drills, gauges, heat gun (for starting, drying and Chance Bros, flush-fitting runway marker light. (Stand 5.)
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