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Aviation History
1915
1915 - 0186.PDF
JBCHT] TWO NEW G.A.C. ALTIMETERS. SINCB describing the G.A.C. "Featherweight" altimeter some little time back, the General Aeronautical Co., Ltd., of 30, Regent Street, London, W., have put on the market two new models thai should prove to be as popular as the former ones have already become. Both are remarkably small and light, in spite of the fact that they give readings up to 10,000 ft. with a high degree of accuracy, and they should form most acceptable presents to any of our flying officers at the front. The one shown on the left of the illustration is model No. 7, a miniature pocket type having a com bined altitude and barometric reading. The mechanism is enclosed in a strong aluminium case, and a keyless dial adjustment is provided. The diameter of the silvered dial is IJ ins., and the instrument weighs only 1 j ozs. The price, complete with plush-lined leather case, is .£3 3.?. The second instrument, model No. 8—known as the " Service"— is of the wristlet type ; it is somewhat similar to No. 7, except that it has altimetric reading only, and that the dial is adjusted by rotating the glass frame. The silvered dial is clearly marked, similarly to the " Aeroplane " model, with divisions of 100 feet, numbered at the thousandth points in black up to 7,000, and red for 8,000 to 10,000. The reading can clearly be discerned at between two and three yards' distance. The total weight is 2 oz., and the dial, as in the case of No. 7, is IJ ins. in diameter. The price, complete with a strong and neat leather strap for attaching to the wrist, is £3 ljs. 6d. ® ® ® ® PUBLICATIONS RECEIVED. The Clipper ofthe Clouds. By Jules Verne. London: Sampson Low, Marston, and Co., Ltd. Price 2s. 6d. The Master of the World. By Jules Verne. London : Sampson Low, Marston, and Co., Ltd. Price 3*. 6d. ® ® ® ® NEW COMPANY REGISTERED. Holmes' Marine Life Protection Assoc, Ltd., 8, Great Winchester Street, E.C.—Capital ^3,000, in ,£1 shares. Acquiring business carried on at 8, Great Winchester Street, E.C., and elsewhere, as the Holmes' Marine Life Protection Association, manufacturers of lights, flares, topedo indicating lights, fog horns, lamps, life savers, pyrotechnics, rockets, signals, line throwers, life buoys, life belts, cork jackets and all kinds of apparatus, devices, or equipments for saving or protecting life on sea or land or in the air. First directors, T. Manwell and W. A. Manwell. ® ® ® ® IMPORTS AND EXPORTS, 1914-1915. AEROPLANES, airships, balloons, and parts thereof (not shown separately before 1910). For 1910 and 1911 figures, see FLIGHT for January 25th, 1912; for 1912 and 1913, see FLIGHT for January 17th, 1914 ; and for 1914, see FLIGHT for January 15th, 1915 =— Imports. Exports. RcExportatlon. 1914. 1915. 1914. 1915. 1914. 1915. £ £ £ £ £ £ January ... 5,945 20,382 210 435 879 13,706 February 28,132 380 106 138 441 18,823 34,077 20,762 510 573 i,3*o 32,529 .MARCH 12, 1915. 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 fur nished 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, 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. 18253/12. Balloon fabrics. Balloon and like envelopes are made up of strips with rhomboidal shaped pieces having diagonal warp threads, secured to them by adhesives and sewing. Siemens Schuckertwerke, Berlin. No. 18338/12. Attaching ropes to fabrics. A draw-rope is attached to fabric surfaces, such as the envelopes of balloons or airships, by means of a loop passed around a grooved bit provided in the fold of a piece of fabric secured to the fabric surface, the stress being thus distributed uniformly over a large area of the surface. The bit may be made of wood, and its groove closed by a web. Siemens Schuckertwerke, Berlin. No. 9930/12. Launching missiles from aerial machines. Relates to apparatus for dropping missiles from flying-machines which are provided with recesses for the reception of the missiles, and consists in providing an open receptacle in the underside of the body of the machine, in which rests an elongated missile retained in known manner by a pivoted strap, the free end of which may be released at will. The missile may be provided with a propeller to drive it through the air, or, if it be a torpedo, through the water; this propeller may be started in any known manner when the missile is dropped. The invention is described as applied to a hydro-aeroplane, from which a torpedo is intended to be dropped during flight. Willisch, A. von, Berlin. No. 18816/12. Aerial machines with and without aerostats; planes, construction and arrangement of; parachutes. An aerial machine comprises a hull and planes both trough shaped so as to act as parachutes. The hull may be closed beneath so as to form a balloon body of semicircular cross-section. Ailerons are hinged at the extremities of the planes and vertical planes are hinged above the hull and interconnected with the ailerons. Two rudders and landing-skids are fitted. Grages, F., Germany. ® ® ® % Aeronautical Patents Published. Applied for In 1913. Published March nth, 1915. 26,168. SIR A. T. DAWSON AND G. T. BUCKHAM. Mounting of Machine guns on aircraft. Applied (or In 1014. Published March nth, 1915. 13,490. J. BACHELOR. Braking, anchoring and starting aircraft. ® ® ® ® Index and Title Page for Vol. VI. THE 8-page Index for Vol. VI of FLIGHT (January to December, 1914) is now ready, and can be had from the publishers, 44, St. Martin's Lane, London, W.C., price 6d. FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: i828Gerrard. SUBSCRIPTION RATES. FLIGHT will be forwarded, post free, at the following rates:— UNITED KINGDOM. ABROAD. s. d. i s. d. 3 Months, Post Free... 3 9 : 3 Months, Post Free... 5 o 6 ,, ,, ... 7 6 ! 6 „ „ ... 10 o 12 >. 15 ° 12 „ „ ... 20 o Cheques and Post Office Orders 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 responsibility will be accepted. Should any difficulty be experienced in procuring FLIGHT jrom local newsvendors, intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance as abeme. 186
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