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Aviation History
1915
1915 - 0102.PDF
[/JLJGHT] SOME G.A.C. ALTIMETERS. GENERALLY speaking, the most essential qualities which have to be considered by the designer of aviation acces sories are accuracy and lightness, and the General Aeronautical Co., Ltd., of 50, Regent Street, London, S.W., are to be congratulated on the production of a series of new British-made altimeters, three types of which we are able to illustrate. As to the first point, it is sufficient to say that the mechanism, which is of special construction, is adjusted to the high standard required by the R.A.F. As to the question of weight, not only has it been found possible to reduce the dimensions to an extraordinary extent, but aluminium has been utilised as far as possible in the construction of the instruments. They are finished in several styles; on the left of our illustration one is shown in a neat leather case, with adjustable sling strap, and a hinged flap protecting the dial. The figures on the dial, boldly marked in black and red, read up to 10,000 ft.—the red figures, from 8,000 to 10,000 ft., indicating altitudes at which one might be considered safe from shell fire. The weight of this model minus its case is 4^ ozs. The instrument on the right at the top is similar in most respects, but is fitted with a flanged back in order that it may be screwed on to a dash or instrument board. The dial has the same markings, and the weight of the complete instrument is 5 ozs. The instrument underneath is a pocket model, and is also similar in design. The casing is of somewhat heavier construction, and the face is protected by an exceedingly well-fitting cover, so that the weight of this model comes out at 6£ ozs. If required all these three instruments can be fitted with a dial recording meters instead of feet, or with one showing both. We understand that several of these are already in use by officers in our flying services, giving entire satisfaction. The prices range as follows : The pocket model, £1 I-JS. dd.; instrument in case, £4 2s. 6d. complete ; dash model, ^3 \os, A smaller model of similar design—reading up to 10,000 ft.—suitable for wearing on the wrist, is to be placed on the market shortly by the G.A.C., from whom further particulars may be obtained. ® ® $ ® PUBLICATION RECEIVED. About the Seaplane School. The Northern Aircraft Co , Ltd., Bo wness-on-Windermere. FEBRUARY 5, 1915. NEW COMPANIES REGISTERED. British Super-Zeppelin Co., Ltd., 154-6, Finsbury Pave ment House, E.C.—Capital £100, in £1 shares. Objects, to experiment in balloons, aeroplanes, hydroplanes, airships, and aerostats, &c. First director, A. H. Fellows. Civil, Nautical, and Mechanical Engineering Co., Ltd., Norbiton Park Garage, Maiden Road, New Maiden.—Capital ^100, in 25. 6d. shares. Civil, nautical, aeronautical, mechanical, and general engineers, &c. First directors, G. Blackman, F. Browne, and W. P. Cooke. Sperry Qyroscope Co., Ltd.—Capital £2,000, in £1 shares. Manufacturers of and dealers in gyroscopes and gyroscopic appliances for steadying ships, aeroplanes, and all kinds of air ships, &c. Under agreement with the Sperry Gyroscope Co., of Manhattan Bridge, Plaza and Flatbush Avenue, New York City. First directors, E. A. Sperry, R. E. Gillmor, and T. A. Morgan. ® ® ® ® 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 Win. 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. 7989/12. Radiators. In a radiator, particularly applicable to cooling the circulation water in explosion motors on flying machines, separate cooling elements, consisting of plates, are connected through their headers and valves so that one or more elements may be shut off. Haegele, J. A., and Zweigle, G., Germany. No. 13288/12. Aerostats; cars. Airship frames which com prise transverse girders braced by vertical, horizontal, and diagonal tie-wires are further braced by wires which connect points on the lower half with points on the upper half of the girder, and by wires which connect lower points together. The car is suspended from the girder. Schutte, J., Germany. Dated March 6th, 1912. No. 14330/12. Parachutes. A parachute adapted to be carried by flying machines is normally held in a long cylindrical casing and is extended by springs when the casing is opened. Herr mann, M., Germany. No. 16680/12. Aerial machines without aerostats; adapted to travel also on land, planes, arrangements and construction of; steering and balancing. Paul, C. W., Germany. ® ® ® ® Aeronautical Patents Published. Applied for In 1814. Published January 2&th, 1915. 660. VICKERS, LTD., AND SIR A. T. DAWSON. Airship construction. 10,265. H. COANDA. Aeroplanes. 22,120. —GUSTIANA. Steering apparatus for aircraft. Applied for In i»i.~>. Published February 4th, 1915. 1,043. J. NEALE. Apparatus for testing aeronautical appliances. 13,021. A. E., H. L., AND H. O. SHORT. Aeroplanes. 18,359. A. CLEMENT-BAYARD. Dirigible aircraft. 18,378. W. D. WHYTE. Compasses for use on aeroplanes. FLIGHT. 44, ST. MARTIN'S LANE, LONDON, W.C. Telegraphic address: Truditur, London. Telephone: l828Gerrard 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 c 6 „ ,,...7616 „ „ ... 10 o 12 „ ,, ... 15 o i 12 ,, ,, .. 20 0 Cheques and Post Office Orders should be made payable to the Proprietors 3/" 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 from local newsvendors, intending readers can obtain each issue direct from the Publishing Office, by forwarding remittance as above. 102
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