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Aviation History
1920
1920 - 0773.PDF
JULY 15, 1920. A cabinet display, of some of Brunt on products. grade steel wire for wire rope ; bright drawn bars, squares, rounds, hexagons, to aircraft specification ; silver steel and high-speed steel for twist drills and small tools ; armature binding wire, electrical resistance wire, music wire, turbine blading, etc. Cellon (Richmond), Ltd., 22, Cork Street, London, W. 1. (STAND 82) SINCE it was placed on the market Two Lighthouses by Chance Brothers : On the left the re- volving type giving a powerful flash eyery 5 seconds and on the right a fixed light, with automatic flashing device in this country in 1911, Cellon dope has made great strides in popularity, and the demand has steadily increased. During the War, considerable progress was made in the direction of pigmented dope coverings to eliminate the effects of ultra-violet rays, and it is stated that the output of these products for War purposes was well over a million gallons. On this stand are found particulars of the two doping schemes : A, which is specially suitable for aero- planes and flying boats, and B, a pig- mented dope which can be obtained in all colours. There are also ex- hibited on this stand some Cellon developments in the shape of solutions for wood (to replace French polish), for metal (in the form of lacquer), and for leather, paper, etc. Chance Brothers and Co., Ltd., Lighthouse Works, Smethwick, Bir- mingham. (STAND 79) THIS firm are exhibiting two light- houses for aerial navigation, one of the revolving type using dissolved acety- lene as illuminant and giving one flash every five seconds. This is similar to a small sea light, but has special top lenses to throw the light upwards, and the beam can be seen by an approaching aeroplane from a distance of, say, 20 miles on a clear night until right over the light. This light can be left unattended during the night. The other lighthouse is of the fixed lens type, giving flashes by means of automatic mechanism, one second light, four seconds dark. The bottom half of the lens is similar to a sea light, and the upper half is omitted so that when at a certain angle above the horizontal the light from the naked flame is seen. It is less powerful than No. 1. This light can be left entirely unattended for long periods. Dioptric lenses of 300 mm. and 200 mm. diameter, as used in small lights, will also be shown, as well as an oxy-acetylene searchlight, 20 ins. diameter. The last-mentioned can be used as a landing light or for any other purpose where a strong illuminant is required. It is entirely self-contained and port- able. 773 Falcon Airscrew Co., and D. M. Da vies, 113, Cottenham Road, London, N. 19. (STAND 29) Two-and four-bladed aeroplane propellers, showing various stages of manufacture, are on view, as well as a wide range of standard propellers Suitable for many well-known makes Of engines. They are seen in a variety of patterns—ordinary, fabric- tipped, fabric-covered, brass-tipped and copper-tipped. Thos. Firth and Sons, Ltd., Sheffield. (STAND 40) ON this stand is seen a full range of those of their products which apply to the aircraft industry. Of, perhaps, principal importance are stampings, bars, sheets, test pieces, bends, etc., in carbon, nickel, chrome vanadium and nickel chrome steels, the latter for both oil and air harden- ing. In the same category must be included stainless steel, which will be also shown in many forms, including a representative selection of parts and articles made from it. " B.N.D." and other stampings in alloy steels are presented by a dis- play of connecting rods, valves, gear blanks and other aero-engine parts, whilst the Derihon method of stamping to obtain maximum strength in the part, through correct disposal of the grain of the steel, is exemplified by several extremely interesting etched sections. Samples are also shown of " B.N.D." stampings which have been submitted to bending and other destructive tests. Gas Accumulator Co. (U.K.), Ltd., Beacon Works, Brentford, Middx. (STAND 68) THREE examples of the aerial lighthouses produced by this firm are on view, a high-power, a medium- power, and a low-power light. These lighthouses are the result of the experi- ence gained by the firm with their A.G.A. Marine Light Signalling system, and the outstanding characteristic of the system is its-absolute autrmaticity, in- cludi.ig lighting, extinction, mainten- ance, etc. It was during 1913 that the first A.G.A. Aeronautical Signal Light was produced, and in construction it followed the lines of the well-known A.G.A. Lighthouse apparatus which is used by many of the principal port authorities of the world, . including Trinity House, London. Another de- velopment to be seen on the stand is the adaption of existing light -buoys for aerial work. The General Accident, Fire and Life Assurance Corporation, Ltd., General Buildings, Aldwych. (STAND 33) FOR the purpose of aviation insur- ance in all its branches. Policies are issued for the following risks : Acciden- tal damage to machines, fire, burglary and theft, third party, legal liability to passengers, pilots' personal accident, passengers' personal accident, cargo, wind, storm and tempest, riots and civil commotions, salvage and abandon- ment of machines, mechanical break- ages and breakdowns, employers' liability to mechanics. Glacier Metal Co., Ltd., Waldo Road, Willesden Junction, N.W.10. (STAND 72) BEING manufacturers only of metals and bearings, their exhibit at the Aero Show is confined to their Findlay's special motor metal, for bearings of
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