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Aviation History
1943
1943 - 0338.PDF
Advertisements FLIGHT INVENTORS We invite new inventions which, guided by the technical knowledge, manufacturing facilities and world-wide marketing organisation of the Simmonds Group, may be developed to play vital parts in modern industry. FEBRUARY 4TH, 1943 Ike SIMMONDS GROUP LONDON MELBOURNE PARIS • NEW YORK LOS ANGELES SIMMONDS DEVELOPMENT CORPORATION LTD • BUSH HOUSE • W.C.2 W.B LTD. WORK MADE FROM STEEL SECTIONS HIGH • CLASS WELDING. HYDRAULIC PRESSWORK MACHINE-SHOP WORK •BYRON* WORKS BLACKHORSE LANE, LONDON, E.I7 SHEET METAL STEEL PLATE WORK mFPHONE: tAjfi*5VWSO0 44It <3 tines ON AIR MINISTRY APPROVED LARCE PRODUCTION LISTM? t COOD DELIVERIES B4I693/39 EXTRUDED PLASTICS will play a large part in post-war developments and the Tenaplas process opens up many possibilities for the enterprising manufacturer. Tenaplas Specialists can extrude plastic coverings of dimensional accuracy, in a variety of colours to wire, rope and other flexible materials. Perhaps your products could be improved by the help of Tenaplas. Why not ask their advice ? TENAPLAS EXTRUDED PLASTICS Registered Trade Mark TENAPLAS LTD., 7 PARK LANE, LONDON, W.I W ATCHES We are still able to supply these.Write for particulars. Every watch guaranteed. E. J. FRANKLAND Phone : Sth. Qodstone 2/65. (DEPT F.), MARLE HOUSE, SOUTH /OF LUDGATE CIRCUS\ V £ST8. 1885 ) TEMPORARY ADDRESS: GODSTONE, SURREr A.t.D. Approved No. B 90484/40. I Actual makers of all types o' Waterproof Covers for Aircraft, Aerodrome and Mechanical Vehicles, Leatherwork GEO. O. JAMES LTD. __ j \A/»Ul.i» NEVILLE STREET, LEEDS. 1. and Webbing 3 HAMMERSMITH GROVE, LONDON, W.6. E_..:__,..... Ttaei: LEEDS 20204/5. LONDON EiTeraWe 26K 7. Equipment. Contractors to the U'niarytf Supply. WHY ANTI-VIBRATION AIRCRAFTLITTELFUSES FROM BELOW AT 40,000 FT. t20 ABOVE AFRICAN DESERT Withstand sudden, extreme TEMPERATURE FACTORS Violent changes in ambient temperatures, with sudden power surges, require special fuse construction. Fusion temperatures of Littelfuses are high enough to be little affected by quick-changing ambients. Effect of convection air currents is minimized by protective design and special features. Sudden power surges, exceedingly steep wave fronts, reaching maximum in micro- seconds, have introduced other problems. These also are efficiently dealt with. Non-Crystallizing Fuse-Elements A common cause of fuse failure is crystallizationand cracking of element due to contraction and expansion. Expan-sion (about .003*) is taken up in aircraft Littelfuses by a "Goose-neck " spring-forming at one end of element (see illustration). FOR FURTHER INFORMATION Engineers fusing for to-day's severe problems of heat, vibration, fatigue, and mechanical strength, are invited to write LITTELFCSE INC. 4775 RAVENSWOOD AVE. CHICAGO, ILL
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