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Aviation History
1921
1921 - 0302.PDF
BEING able to control at will the light of headlamps is ablessing to both user and the other fellow. We are therefore glad to be able to help clear up a matter upon which there issome misapprehension. The headlamp-dipping mechanism, which offers so efficient and inexpensive a solution of theheadlamp-glare problem, invented by Mr. F. Lionel Rapson, and applied to his and his friends' cars, has not been patentedby him, and will not be, and Rapson Automobile Patents. Ltd., as the company exploiting his other inventions, are notmaking commercial application of this idea. As we learn Mr. Rapson himself is simply inundated withenquiries concerning this matter, he desires us to state that he will be very happy to send a set of drawings explaining hismechanism to any of our readers who will make application fo them at the Company's offices, 35, New Cavendish Street,Great Portland Street, W. 1, without any charge, his desire being that the greatest possible number of motor-car usersshall be able to avail themselves of the great convenience— both to themselves and other road-users—of this idea. Poulet on the Wing Again AFTER a stay of several months Poulet and his mechanicBenoit and a passenger have left Java on their Caudron biplane and have arrived at Celebes, where they have landedat Kakaskassen, on an aerodrome situated about 2,500 ft. above sea level. The aerial travellers were feted by theEuropean populace. Kirch Gets Upstairs ON his Nieuport, single-seater, 300 Hispano, the French pilot Kirch recently put up a very fine performance by climbing to an altitude of 19,700 ft. in 14 mins. The stages of the flight were accomplished in the following times : 3,300 ft. in 2 mins., 6,600 ft. in 3 mins. 35 sees., 9,850 ft. in 6 mins, 13,100 ft. in 8 mins. 35 sees., 16,400 ft. in 11 mins. 15 sees., and 19,700 ft. in 14 mins. The Concours Militaire LIEUT. GONIN continues to plod along on his three-engined Farman Goliath, covering his 500 kilometres a day. On April 21 he was troubled with rain, but managed tocomplete his flight. He is expected to complete his last stage any time now. Bellartger Works Build MonoplaneIT is reported that the automobile firm of Bellanger have just completed the designs for a new large amphibianmachine. Designed by M. Richard, the monoplane will have a span of 21 metres, and will be driven by three engines of atotal power of 1,500 h.p. It is to carry 30 passengers, and will be able to alight on either land or sea. Echo of a War-Time Air Raid IN connection with the unfortunate incident of the War in which a British aeroplane mistook its direction and dropped bombs on a Dutch village, the occupants being under the impression they were over German territory, Jonkheer Dr. H. A. van Karnebeek. Dutch Minister for Foreign Affairs, has informed the Chief Magistrate of the Province of Zeeland that he has received from the British Government 16,381 guilders 76 cents (about £1,500), the amount due for reparation damage caused by the raid which took place on December 22, 1917. Dutch Air-Post ChargesTHE extra charges for the International air-mail service, the Dutch Postmaster-General announces, will be forBelgium 10 cents (2d.) ; Great Britain, Ireland, France, and Germany, 15 cents (3d-) ; Denmark, 25 cents (3d.), all per20 grammes (about J oz.). By Air : One Day instead of Three to Seven Days DAKAR, in Senegal, is to be linked up with Kayes througha French company formed by M. Georges Madon, President of the League of Pilot-Aviators and a well-known war " ace."The company proposes instituting an air service along the Senegal coast between Dakar and St. Louis, and Dakar inlandto Kayes. The first service will occupy eighty minutes, against seven hours by railway, and the latter cross-countryservice about one day compared with three days by auto- mobile and seven days by rail. Thus France continues toblaze the trail bravely throughout her possessions. The Gottenborg Air Station1 THE Gottenborg municipal authorities have decided to apply to the Swedish 1 Government for permission to expro- priate certain land in the parish of Torslanda on the island of Hisigen, for the purpose of laying out an air station. APRIL 28, 1921 PUBLICATIONS RECEIVED Timbers for Woodwork. By Wm. Bullock. London : Evans Brothers, Ltd., Montague House, Russell Square, W.C. 1. Price 4s. 6d. net. Technical Note No. 33. The Effect of ihe_ Nature of Surfaces on Resistance as Tested on Struts. By Dr. Ing. C. Wieselsberger, National Advisory Committee for Aeronautics, Navy Building, Washington, D.C., U.S.A. Technical Note No. 43. Note on the Resistance of Polished Cylinders (and Cylindrical Wires). With Generatrices Per- pendicular to the Airstream. By A. Toussaint. NationalAdvisory Committee for Aeronautics, Navy Building, Washington, D.C., U.S.A. Technical Note No. 47.—Recent European Developments in Helicopters. National Advisory Committee for Aeronautics, Navy Building, Washington, D.C., U.S.A. Technical Note No. 54. The Factors that Determine the Minimum Speed of an Airplane. By F. H. Norton. NationalAdvisory Committee for Aeronautics, Navy Building, Washington, D.C., U.S.A. Technical Note No. 55. Airplane Crashes : Engine Troubles. A Possible Explanation. By S. W. Sparrow.National Advisory Committee for Aeronautics, Navy Building Washington, D.C., U.S.A. Report No. 105. Angles of Attack and Air Speeds During Manoeuvres. National Advisory Committee for Aeronautics, Navy Building, Washington, DX., U.S.A.m m m m AERONAUTICAL PATENT SPECIFICATIONS Abbreviations: eyl. — cylinder; I.C. — internal combustioD ; m. — noton The numbers in brackets are those under which the Specifications will be printed and abridged, etc.APPLIED FOB IN 1919 Published April 38, 192120,552. G. C. DRAPER. Inclinometers. (160,858.) 26,373- J- H. WOHTHINGTON and A. JL. CHEVALLIER. Gyroscopic appliances.(r6o,S68.) 26,836. H. ROUSSILHE. Aerial photography- (160,869.)32,078. L. MAUBLANC and N. LAILLIE. Screw propellers. (160,901.) 32,242. A. REITSMA. Rotary engines. (160,904.)32,673. J BOWEN. Cooling of air-cooled engines. (160,936.) APPLIED FOR IN 1920. Published April 28, 19211,101. F. MURPHY. Wireless direction finding systems. (160,975.) 1,249. R- M. RADIO, LTD., and H. ST. J. DF. A. DONISTHORPS. Portable radio telegraphic and telephonic apparatus. (160,981.)8,767. 11. J. NOONEY and E. E. BROWN. Metal spars, longerons, etc. (r6i,o63.)10,401. J. T. THOMPSON. Aircraft. (161,073.) 10,979. AKT.-GES. R. BOSCH. Starting of rotary I.C. engines. (142,107.)15,784. P. C. HEWITT. Flying-machines. (145,011.) 20,712. H. JUNKERS. Radiators. (148,889.)22,899. Soc. DES MOTEURS SALMSON. Radial cyl. explosion m. (149,976.) 33,952. SPERRY GYROSCOPE CO. Gyroscopes. (161,133.) If you require anything pertaining to aviation, study "FLIGHT'S" Buyers' Guide and Trade Directory, which appears in our advertisement pages each week (see pages xiii and xiv). NOTICE TO ADVERTISERS All Advertisement Copy and Blocks must be delivered at the Offices of "FLIGHT," 36, Great Queen Street, Kingsway, W.C. 2, not later than 12 o'clock on Saturday in each week for the following week's issue. FLIGHT The Aircraft Engineer and Airships36, GREAT QUEEN STREET, KINGSWAY, W.C. 2. Telegraphic address : Truditur, Westcent, London.Telephone: Gerrard 1828. SUBSCRIPTION RATES ' FLIGHT " will be forwarded, post free, at the following rates :- ABROAD* 3 Months, Post Free..6 12 „ s. 8 16 33 d. 36 o UNITED KINGDOM s.3 Months, Post Free... 7 6 „ „ ... 1512 „ „ ... 30 These rates are subject to any alteration found necessaryunder abnormal conditions and to increases in postage rates, * European subscriptions must be remitted in British currency. Cheques and Post Office Orders should be made payable to theProprietors of "FLIGHT," 36-, Great Queen Street, Kingsway, W.C. 2, and crossed London County and Westminster Bank, otherwise no responsibility will be accepted. Should any difficulty be experienced in procuring " FLIGHT " from local newsvendors, intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance as above. 303
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