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Aviation History
1928
1928 - 0736.PDF
AIR POST STAMPS By DOUGLAS ARMSTRONG (Editor of " The Stamp Collector ") THE re-opening of the 1928 flying season was marked in several countries by the issue of new stamps for aerial postage Early in May the Berlin-Koenigsberg-Moscow air line was again put in operation, touching en route at Riga and in consequence, the Latvian post office has put on sale air mail stamps in three denominations, comprising 10 santimu green, 15s. red, and 20.?. blue. They are printed in the same triangular design as those originally issued in 1921, showing an aeroplane in flight over the city of Riga, but with values expressed in the new currency. These stamps will also be employed in the Leningrad-Reval-Helsingfors service. * * * FOR the first air post flight across the Adriatic, carried out between Valona and Brindisi, on April 21 last, five thousand sets of the obsolete Albanian air post stamps of 1925 were re-issued with the addition of a commemorative overprint reading " Rep. Shqiptare 1 Iar Vlone-Brindisi-21.IV. 1928 " in which form they were available to the public for eight days only, viz., April 21 to 30. A new definitive series of aero stamps is foreshadowed here. * * • IN Bulgaria, air post flights were resumed between Sofia-Rustchuck-Varna under the auspices of the " Buenavad " Society, on April 15, when two additional values of the con-temporary Bulgarian postage stamps made their debut with an aeroplane imprint similar to that found upon the airstamps introduced for a brief period in November last, bearing the name of the operating concern in tiny letters upon itsside. The stamps thus distinguished are the 2 leva drab (portrait of King Boris overprinted in red) and 10 leva brownand orange (National Lion) overprinted in green. Two sheets of the 1 on 6 leva air post stamp of 1927 have recently-come to light with the overprint inverted and for this error high prices are being asked. Unfortunately, the holders havedefaced the specimens by the application of a rubber hand- Stamp, presumably intended as a form of guarantee, butwhich completely destroys their interest for aero-philatelists. * * * THE present quasi-official air post stamps of Greece areabout to be replaced by a government issue, at first of a provisional, but later of a permanent, character. The provi-sional series will be available almost immediately and will consist of remainders of the " Fabvier " commemorationstamps, no longer valid for postage surcharge, in red with the figure of an aeroplane and altered values as follows : 50 leptaon 3 drachmai, 1 dr. on 6 dr., 2 dr. on 6 dr., 3 dr. on 3 dr. and 5 dr. on 6 dr. * * * A 50-CENTESIMI air mail stamp, printed in rose-carmine inthe permanent type, took the place of the surcharged variety , in the current Italian series in March. According to a Helsing-fors correspondent it is considered improbable that the set of Finnish air stamps that has been impending for some timepast will ever materialise. On the other hand, Belgium is reported as being on the point of releasing some specialstamps for air post purposes in designs depicting aeroplanes flying over Brussels and other Belgian cities. * * * AN unheralded and unlooked for addition to the world'saero stamps made its appearance in Malta on April 1, in the form of the current 6d. postage stamp of the colony,expressly overprinted " AIR MAIL " for the purpose of prepaying the supplementary fee upon letters forwarded toIraq, Persia, India, etc., via Egypt and the Imperial air mail service. Air mails are made up fortnightly, and in thecase of letters for Baghdad, a clear saving of sixteen days is effected. * * * CERTAIN of the stamps issued in connection with the recentlyinaugurated South American air post systems are already proving a profitable investment for those collectors who werefar sighted enought to snap them up when they first came into use. Seven out of the sixteen values of the overprintedBrazilian series are now reported as obsolete, and it seems certain that the remainder will shortly be superseded bystamps of a more permanent type. Semi-official air post Stamps bearing the device of the national flag, printed inGermany, have also been taken into use by the Condor and Varig Syndicates, which control the coast-wise air mailroutes in Brazil itself. AUGUST 2, 1928 AIR MINISTRY NOTICE TO AIRMEN Use of Royal Air Force Aerodromes by Civil Aircraft1. ATTENTION is called to the conditions under which civil aircraft are permitted to use Royal Air Force aerodromes ; namely, in addition to landingin cases of emergency : (i) For refuelling in the course of journeys where no civil facilities exist:(ii) For landing of passengers proceeding to a destination near the air station concerned.2. If it is desired to use a Royal Air Force aerodrome for more than a passing call, notice must be given to the Commanding Officer and permissionobtained beforehand. 3. These conditions apply equally to aerodromes used by the Auxiliary AirForce unless licensed as civil aerodromes. 4. The use of the Royal Air Force aerodrome at Gosport by civil aircraft isrestricted to cases of real emergency. The civil aerodrome at Southampton Hamble) is available nearby. 5. The Royal Air Force seaplane station at Felixstowe, as already notifiedis not available for use by civil aircraft without permission. (No. 57 of 1928.) m m m m PUBLICATIONS RECEIVED Aeronautical Research Committee Reports cmd Memoranda :No. 1126 (M.52).—The Distribution of Stress and Strain in the Wohler Rotating Cantilever Fatigue Test. By W. Masonand N. P. Inglis. Oct., 1927. Price Is. 6rf. net. No. 1129 (E. 28).—Heat Transfer in Internal Combustion Engines.By H. Moss. Sept., 1927. Price Is. 3d. net. H.M. Stationery Office, Kingsway, London, W.C.2.Aeronautical Research Committee Reports and Memoranda : No. 1130 (Ae. 300).—A High Speed Wind Channel for Testson Aerofoils. By T. E. Stanton. January, 1928. Price 9d. net. No. 1136 (Ae. 306). The Theory of Pressure Capsules.By A. A. Griffith. August, 1927. Price 9d. net. No. 1131 (Ae. 301).—Lift and Torque of an Autogyro on the Ground.By H. Glauert. July, 1927. Price Ad. net. No. 1132 (Ae. 302).—On the Vertical Ascent of a Helicopter. By H.Glauert. November, 1927. Price 9d. net. H.M. Stationery Office, Kingsway, London, W.C.2.Hampstead Garden Suburb Programme of Coming-of-Age Celebrations, June 23-30, 1928. Hon. Gen. Secretary, J. ADavidson, 153, Hampstead Way, N.W.I 1. Price 6d. L'Annie Aeronautique, 1927-1928. By L. Hirschauer andCh. Dollfus. C. Dunod, 92, Rue Buonaparte, Paris. AERONAUTICAL PATENT SPECIFICATIONS [Abbreviations: Cyl. = cylinder ; i.e. = internal combustion; m. = motor.The numbers in brackets are those under which the Specifications will be printed and abridged, etc.) APPLIED FOR IN 1927 Published August 2, 19286,111. N. M'ACMILLAN and M. E. A. WRIGHT. Provision of hydrovanes on sea-going aircraft. (293,336.) 9.475. BRISTOL AEROPLANE CO., LTD. (A. H. R. FEDDF.N). Air-com- pressors for use with i.e. engines. (293,407.) 9.476. BRISTOL AEROPLANE CO., LTD. (A. H. R. FEDDEN). Lubrication ofi.e. engines. (293,408.) 9.477. A. H. R. FEDDEN, L. F. G. BUTLER and BRISTOL AEROPLANE CO.,LTD. Valve-gear for i.e. engines. (293.409.) 10,632. G. A. WILSON. Electrical generating and propelling apparatus forairplanes, &c. (293,505.) 16,321. BOULTON AND PAUL, LTD., and J. D. NORTH. Girders, spars, &c.(293,552.) 21.569. W. R. TURNBULL. Aeroplane propellers. (293,587.)21.570. W. R. TURNBULL. Angle-indicators for variable-pitch propellers. (293,588.)27,214. H. JUNKERS. Starting devices. (293,610.) 27,740. F. RARACCHINI. Signalling and illuminatingaircraft. (293,613.) APPLIED FOR IN 1928 Published August 2, 19283,462. F. TISMER. Propellers. (293,656.) n flans for use from FLIGHT, The Aircraft Engineer and Airships 36, GREAT QUEEN STREET, KINGSWAY, W.C.2. Telephone : Holborn 3211. Telegraphic address : Truditur, Westcent, London. "FLIGHT" SUBSCRIPTION RATES.UNITED KINGDOM s. d.3 Months, Post Free.. 7 7 6 ., „ ..15 212 „ „ ..30 4 ABROAD* 3 Months, Post Free6 ,, „ 12 ,. „ s. 8 16 d.3 ..33 0 * Foreifn subscriptions must be remitted in British currtney. Cheques and Post Office Orders should be made payable to theProprietors of " FLIGHT " 36, Great Queen Street, Kingsway,W.C.2, and crossed Westminster Bank. 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 atabove. 680
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