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Aviation History
1915
1915 - 0328.PDF
(/ycHf) STEEL WIRES. ONB of the most important components of any type of aircraft is the steel wire or cable employed for bracing, &c, and although Stranded cable is generally used for the purpose, solid drawn single wire is sometimes utilised, especially wire drawn to a streamline section. The manufacture of such a wire as this is a matter requiring no small amount of experience, not only as regards the material employed, but also in connection with the dies and machinery required. One firm which has given considerable attention to this branch of metallurgy is Messrs. W. N. Brunton and Son, of Musselbuigh, Scotland, who have just issued a little booklet which should ptPH very useful and instructive to those of our readers who are directly concerned with the constructional side of aviation. It contains prices and particulars, including heat treatments recommended for steels of all classes for rod and wire work, and there is a chart of heat colours with the corresponding temperatures in Centigrade and Fahrenheit scales. Circular section rods from 'oio in. to 2*5 ins. in diameter are made as standard in all the various qualities, as well as other common sections such as <*•'•*•£ Some sections of the drawn wires made by Messrs. W. N. Brunton and Son. oval, square, hexagonal, &c, while the large variety of other sections which can be drawn in steel, iron, copper, brass or steel alloy can be seen in the illustration, in addition to which arrange ments can be made for the drawing of any pattern. These rods are cold drawn to micrometer gauge, those of circular section being put through a special process to obtain absolute uniformity and roundness. The other sections, when not too intricate, can, it is claimed, bo drawn as accurately as they can be milled. Special attention is drawn to the " Flying Scotsman " brand of high speed steel (containing about 12J to 13J per cent, of Tungsten), which when hardened will, it is said, cut glass easily and retain its cutting edge. In addition to the above information, there are a number of useful tables for the draughtsman showing areas of circles, sizes and weights of wire gauges, &c. Indeed, Messrs. Urunton"s catalogue is well worth a study. ® ® ® $ The Advantages of Triplex Goggles. CURIOUSLY enough, it was only about a fortnight or so ago that we drew attention to the danger when using ordinary glass goggles, in the event of an accident, of splinters of glass entering the eyes of the pilot or his passengers. Now we hear of an actual case which has occurred at a Ixmdon aerodrome, in which the pilot was involved in a bad smash. He escaped with his life, but unfortunately he has lost his eyesight through his goggles being smashed and the glass getting into his eyes. We can only repeat that an easy way of obviating any such trouble is by the use of goggles with Triplex glass lenses, MAY 7, IQIS. which are so constructed that it is impossible for them to be splintered. They can be had in several styles from the Triplex Safety Glass Co., Ltd., of 1, Albemarle Street, Piccadilly, W. Titanine Telegraphic Address. THE British Aeroplane Varnish Co., Ltd., the pro prietors of the Titanine, has just registered telegraphic addresses which are not only expressive but should be easily remembered. For the Head Office it is " Tetrafree, Newcastle-on-Tyne," and for the London Office " Tetra free, Fen., London." ® ® ® ® ENEMY PATENTS RELATING TO AERONAUTICS. THE following list of British patents which have been granted in favour of residents of Germany, Austria, or Hungary, is furnished in view of the new Patents Acts, which empower the Board of Trade to grant licences under certain conditions to British subjects to manufacture under enemy patents—which licences can be retained after the war—and is specially compiled for FLIGHT by Lewis Wm. Goold, Chartered Patent Agent, Enrolled Patent Attorney in the United States, 5, Corporation Street, Birmingham. It is desirable in the first instance to obtain a full copy of the patent specification (price 6d. each patent), and also the latest particulars upon the Patents Register. If any patent listed has been assigned to a non-enemy proprietor, the law does not apply. No. 18828/12. Aerostats; in aerostats, dirigibles, &c, in which the car is suspended from fabric appendages attached to the sides of the balloon and forming a keel, the keel appendage is made air-tight so as to be utilised as a ballonet. The space so formed may be filled with air by fans or by placing a non- return valve in the front of the chamber, so that air passes in owing to the motion of the balloon. Siemens Schuckertwerke, Berlin. Dated October 28th, 1911. No. 12386/12. Air-ship shelters. The walls and roofs of a hangar for dirigible air-ships are made in halves carried by supports which are weighted at their lower ends and are pivoted at their centres of gravity. The airship is provided with pulleys around which pass anchor-ropes secured to the walls. In order to allow the ascent of the air-ship, the gable locks are pushed aside and the hangar is opened by rotating the halves about their pivots until the wall parts form an horizontal floor slightly above the ground level. Fischer, YV., Germany. Dated May 27th, 1911. No. 18829,12. Aerostats ; in airships of the type in which the car is suspended by a keel-shaped fabric appendage, the balloon is given initially a larger section in the vicinity of the fabric suspension in order that a constriction may be avoided at this part when the load is applied. The section may be enlarged over the whole length of the appendage, or at two places only. Siemens Schuckertwerke, Berlin. Dated July 4th, 1912. ® ® ® ® Aeronautical Patents Published. Applied for In 1914. Published May 6th, 1913. 13,776. CAMBRIDGE SCIENTIFIC INSTRUMENT CO. AND H. DARWIN. Linear accelerometer for aircraft. 17,990. H. D'O. BENINGFIELD. Aeroplanes. 18,127. L. G. HAMMER. Appliances for carrying on oral communication between pilot and passenger. l8,935- H. C. BERRY. Aenal machines. 19,048. F. STRAVRUM. Aeroplanes. »i,«4i. E. BIJVCK. Wind screens for aeroplanes, &c. Applied (or In l»l.v Published May 6th, 1915. I3S- M. J. MUSTONEN. Flying machines. FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: 1828 Gerrard. SUBSCRIPTION RATES. FLIGHT will be forwarded, post free, at the following rates :— UNITED KINGDOM. ABROAD. s. d. s. d. 3 Months, Post Free... 3 9 3 Months, Post Free... 5 0 6 •> >> .»7 6 6 „ „ ._ 10 o " • »S o " „ „ .- ao 0 Cheques and Post Office Orderj should be made payable to the Proprietors of FLIGHT, 44, St. Martin's Lane, W.C., and crossed London County and Westminster Bank, otherwise no re'pOKsibility will be accepted. . * 328
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