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Aviation History
1940
1940 - 1848.PDF
572 JUNE 27, 1940 PARTITION THE INDUSTRY A section of the Colt Black-out Venti- lator showing the angle of the light trap louvres. Dural Age-hardening THE attention of technical staffs isdrawn to an important paper given before the Institute of Metals by J. C. Arrow-smith, M.Met., and K. J. B. Wolfe, M.Sc, dealing with the use of refrigeration for delaying the age- hardening of duralumin type alloys, with special reference to the production of large pressings for aircraft. It is con- tained in the May issue of the Journal of the Institute of Metals, or reprints are to be had^from the Pressed Sttcl Company, Ltd., Cowley, Oxford, of whose staff the joint authors are members. War Workers' Health IN an emergency report, by theIndustrial Health Kesearch Board of the Medical Research Council, it is claimed that the adoption of certain recom- mended measures improves the health, comfort and efficiency of workers in factories. Production is increased and discontent and fatigue avoided. The report is based on many years' re- search and deals with the subject-matter under four main headings: (i) Output and fatigue in relation to excessive hours with insufficient intervals for rest. (2) Effects of inadequate or unsatisfactory lighting, heating and ventilation. (3) Causation and prevention of accidents. (4) Recording of sickness absence and accidents as a guide to loss of efficiency and well-being. The evidence and arguments are simply presented and no refuge has been taken in medical jargon. Whether a factory employs 50 or 5,000 people the broad principles are the same. The re- port is obtainable from H.M. Stationery Office, price 7d., post free, and is called Industrial Health in War. Black-out Fug Defeated BLACK-OUT conditions impose uponus two major hardships; absence of daylight and absence of ventilation. While the former can be alleviated to some considerable extent by the installa- tion of special lighting, the latter has presented a severe problem. Black-out fug has been blamed for loss of produc- tion owing to the effect of bad ventila- tion on workers' health and, even where actual absence from work caused by sick- ness does not occur, there seems to be a lowered vitality and predisposition to disease among those who have to spend long hours under such conditions. Colt Ventilation Limited, who for many years have specialised in introducing fresh air in difficult circumstances, have pro- duced the Colt Black-out Ventilator to defeat this fug and the result is very suc- cessful. As will be seen from the sectioned view illustrated on this page, the angles of the louvres have been so arranged as to make it impenetrable to the passage of light—• less than 0.0009 Per cent, of the original intensity is passed—there is, at the same time, practically no restriction to the movement of a.ir in either direction. An astounding feature is that these results can be obtained from a ventilator which is but ijin. thick and is light enough to be hung as part of a black- out curtain or blind in order that the window may be left open behind it. Prices vary from 4s. Od. to us. 6d., according to size and purpose, and they are to be had from Colt Ventilation Limited, Bush House, Strand, London, W.C.2. Hawker Siddeley Interim THE directors of Hawker Siddeley Air-craft Company, Ltd., have declared an interim dividend of 15 per cent, actual, less tax, on the Ordinary shares on account of the year ending July 31st, 1940, payable on July 3rd, 1940. Aluminium Technique ALUMINIUM Union Limited have •^*- issued the seventh of their " Alumin- ium Technique " booklets. The subject- matter is '' The Surface Treatment of Aluminium Castings." It is a comprehensive summary of up- to-date practice in mechanical finishing, anodic treatment, electro deposits, painted or laquered finishes and applied special coatings. Copies are to be had from Aluminium Union Limited, The Adelphi, Strand, London, W.C.2. Amphenol Connectors THE American Phenolic Corporationannounces a new series of electrical connectors for aircraft and other pur- poses. They have been designed in iiccordance with U.S. Army and Navy requirements and are available with from 1 to 42 contacts for current ratings of 5 to 200 amperes. It is significant that they have been selected for use on the new Curtiss-Wright substrosphere mach- ine for inter-communication and other key purposes. The American Phenolic Corporation has numerous agents, but the head office is at 1,250 Van Buren Street, Chicago, U.S.A. AERONAUTICAL PATENT SPECIFICATIONS 84.W. 2.T47.V 22.-)8Q. 22571. 23763. 2762.'). 281.52. 28306. 28700. 2Cj6lJO. 4259. 9617. 31478. 32391. 28125. 28611. 30286. 37519- K)3Q- DAIMLER-BENZ AKT.-GES. Guidance and springing of vehicle axles (519,608). STANDARD TELEPHONES AND CABLES. LTD. Radio direction-finding systems (510,461). BRISTOL AEROPLANE CO., LTD.. and FEDDEN, A. II R. Fluid-transmission circuits in variable-pitch airscrews (519,562). 1038. [Published May 2, 1940.) LONGACRE, J. Retractable aircratt wing- flaps (519,718). WASEIGE, C. R. Variable-pitch aerial pro- pellers (519,622). MESSERSCHMITT, W. Arrangements for sucking-off the boundary layer on aero- plane wings (519,623). OLAER PATENT CO. Retractable landing- gear for aircraft (510,681). ROWLEDGE, A. .]. Sleeve-valve internal- combustion engines (519,659). BREVETS AERO-MECANIQUES SOC. ANON. Lubricant-cooling means for liquid-cooled internal-combustion engines (519,752). ALEXANDER, R. M. Aircraft (519,794). SAKA/.IN, R. R. R. Damping of vibrations in airscrews (519,866). I939- DELANEY, C. T., and GALLAY, LTD. Steam- heated air heaters used in airplanes (519,712). GEORGE. \V. L.. and GALLAY. LTD. Boiler for aircraft, ships, locomotives, or motor road vehicles (519,713). WASEIGE, C. R. Variable-pitch aerial pro- pellers (519,666). WASEIGE, C. R. Variable-pitch aerial pro- pellers (519,667). (Published Mav Q. 1940.) ALEBON, J., and AEROGRAPH CO., LTD. Spraying-apparatus (520,030). BERGLAS, A. De-icing means for aircraft (519,882). LAKE, A. E. Apparatus for manoeuvring aircraft (520,051). SCHNEIDER & CIE, and FIEUX, J. Catapults for launching aeroplanes (520,006). 15043- 20224, 20/07- 20798. 20801. 250.57- 27186. 29294. (Published May 16, 1940.) 193X. BIRMINGHAM SMALL ARMS CO., LTD., FAULKNER, H. A., and WACKROW, R. D. ' Cartridge belts for automatic firearms (520,278). PKATI, J. H., MANLEY, G. E., and GIRLING, A. H. G Vehicle brakes (520,271). SMITH AND SONS (MOTOR ACCESSORIES). LTD., S., and MEREDITH, F. W. Gvro- scopic apparatus for the automatic con- trol of aircraft (520,175). SMITH AND SONS (MOTOR ACCESSORIES), LTD., S., and MEREDITH, F. VV. Auto- matic steering of aircraft (520,176). SMITH AND SONS (MOTOR ACCESSORIES), LTD., S., and MEREDITH, F. W. Auto- matic control apparatus for aircraft (520,177). INDIA RUBBER, GUTTA PERCHA AND TELE- GRAPH WORKS CO., LTD., TARRIS, F. T., and WEBB, D. Gun-fire-control mechan- isms (520,329). DOWTY, G. H. Landing-gear of aircraft (520,332). ELECTROFLO METERS CO., LTD., and COULING, C. W. Electrical indicating and/or recording instruments (520,138). INCREASES OF CAPITAL MOULDED COMPONENTS (.TABLO), LTD.—Manufac- turers of component parts for aircraft, ships, etc., Brcttenham House, Lancaster Place, W.C.2. The nominal capital has been increased by the addition of £10,000 in £1 ordinary shares, beyond the regis- tered capital of /m.ooo. AEROPLASTICS, LTD. (formerly Deekay Aircraft Corporation, Ltd.), 101, Leadenhall Street, E.G. The nominal capital has been increased bv the addition of £25,000, in .1 ordinary shares, bevond the registered capital of /25.000. CRAWLEY AIRCRAFT AND PRECISION TOOL CO.. LTD., Precision Works. Tushmore Lane, London Road, Crawley, Sussex.—The nominal capital has been increased by the addition of £4,900, in £1 ordinary shares, beyond the registered capital of /mo.
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