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Aviation History
1958
1958 - 0740.PDF
756 FLIGHT, 30 May 1958 THE INDUSTRY New Hydraulic Hose "ll^HAT are stated to be the first entirely British-made dis-" persion-polymer PTFE hydraulic hoses are now being marketed, under the trade name "Palmer Fluoroflex," by PalmerAero Products, Ltd., of Herga House, Vincent Square, London, S.W.I. Previously obtainable only from dollar sources, they arebeing made available, to users both at home and overseas, with swaged-on or reusable end-fittings. Constructed from a new fluorocarbon resin compound, andarmoured with stainless-steel wire braid, the hoses will carry a wide variety of engineering solvents, hydraulic fluids, acids andH.T.P., and have a remarkable combination of chemical, physical, thermal and electric properties. They are further stated to becompletely unaffected by all chemicals except molten alkali metals and fluorine at elevated temperatures and pressures; to operateover pressure-ranges up to 10,000 lb/sq in; to withstand tem- peratures from —100 deg F to + 500 deg F; and to be non-ageing,non-flammable, water repellent and capable of withstanding pro- longed flexing and vibration. Miniature Connectors I Six-way and 25-way connectors. LLUSTRATEDhere is one of the new range of minia-ture M4 aluminium plugs and socketsnow being produced by J. N. Somers,Ltd., of 142-8 Edg- ware Road, London,W.2 (of which com- pany, incidentally,racing pilot Nat Somers is a direc-tor). The connec- tors are made inthree sizes—small (2-, 3-, 4- and 6-way), medium (4-, 6- and 12-) and large (18- and 25-) and are pressure-tested at 20 lb/sq in, withleakage-rate guaranteed not to exceed 1 c.c./hr. Flash tests at twice the working voltage plus 1,000 V are also made. Inspection,test and release are to the relevant M.o.S., A.I.D. and inter-Service requirements. Any required ancillary parts are also available. Rumbolds Entertain Tl^HEN Mr. and Mrs. L. A. Rumbold recently gave another of*" their parties to senior staff and friends from the industry it proved, like its predecessors, to be not an occasion for longspeeches; and Mr. Rumbold's only retort to Mr. T. O. Jones' reference to him as "a pioneer of aircraft furnishing" was to say,"I did not know I had done so much, but we have done our best." He then congratulated Mr. R. S. Stafford on being appointeda director of Handley Page, and extended a special welcome to Mr. and Mrs. Barto of Fokkers. Replying to Maj. Jack Stewart's welcome to the guests, Mr.Charles Wilkins, de Havilland (Hatfield) chief designer, averred that if Rumbolds could save 1 lb on each seat of twenty-five600 m.p.h. 100-seaters, the saving over ten years "would represent 2\ megaton lb" (or £s—Mr. Wilkins did not specify which).W/C. Phillip Morgan, managing director of Eagle Aircraft Ser- vices, also replied. Lightweight Accumulator Progress A RECENT gathering in London of licensees and concession-•**• aires of the Yardney International Corporation has prompted the publication, by Venner Accumulators, Ltd., of an interestingbackground story on the silver-zinc accumulator. The principle of the silver-zinc electro-chemical couple hasbeen known for many years, as has its use as a primary cell capable of one discharge only. Experimental work with the silver-zinc Palmer Fluoroflex PTFE hose (see col. 1) under 100-hour test at 100 vibration impulses per minute, pressure variations from 0 to 3,000 Ib/sq in, ambient temperature of 120 deg C, and independent vibration of one end through OlOin at 7,500 cs/min. A 915-hour test under even more severe conditions followed. couple has been pursued for many years by Professor Andre ofParis who, before the war, got half-way to his goal by the produc- tion of a cell which was rechargeable to a useful number of cycles,but in which, unfortunately, the electrodes were soluble, so that the life of the cell was accordingly limited. Since those early days great advances have been achieved. In1948 Mr. Michel N. Yardney, now president of the Yardney International Corporation of New York, obtained the world rightsfor the production of silver-zinc cells, as he foresaw the possibili- ties of a lightweight high-capacity cell which could be accom-modated in a very limited space and be capable of extremely high rates of discharge. Since 1948 manufacturing licences have been granted in Canada,England, France and Germany, and concessionaires appointed in nine other countries. Venner Accumulators, Ltd., became licenseesin January 1948. Progress since then has been continuous, and the capacity range of their batteries has constantly increased. One Venner resin-encapsulated silver-zinc accumulators. of the latest advances is in the field of miniature H.T. packs,which are suitable for numerous applications, notably in missile electronics. Among the latest developments is the Type HT 125cell, designed for resin-potting in strips of up to ten. Nominal capacity is 0.125 Ah, for discharge over a current range of from10 to 500 mA. IN BRIEF The General Electric Co., Ltd., announces three-year contracts^ by the Air Ministry for the supply of vapour-proof fluorescent & lighting fittings, and for the supply of lighting fittings for officers' married quarters at R.A.F. stations in die U.K. and overseas. * * * Mr. Ken S. John, formerly with Export Packing Service, Ltd.,has joined R. and H. Wale (Joinery), Ltd., as sales manager and^., in his new capacity will be concerned with sales promotion ofJtthe company's joinery and packaging activities. 3 Mr. H. L. Ginaven, director of production at the Wolverhamp*; :ton, Glasgow and Wallasey factories of the Goodyear Tyre andi Rubber Co. (Great Britain), Ltd., is returning to the United! tStates shortly. He is being succeeded by Mr. John Q. Shaul, who; ' is expected to arrive in this country during June and whose present? .appointment as superintendent at Plant 2 of the American Good- year company in Akron will be taken over by Mr. Ginaven. * * * We regret to record that Mr. G. C. Cunningham, O.B.E., joint? -managing director and a founder director of Racal Engineering, Ltd., died on May 16. He was with Imperial Airways before thewar, and during it served with the R.A.F., being associated with the formation of the North Atlantic Ferry Command as DeputyChief Signals Officer in Canada. In 1945 he was appointed signals controller of B.O.A.C., remaining with the Corporationuntil 1950. * * * . > In ten weeks, from the date of beginning work at GatwickAirport to major completion of the contract, Crompton Parkinson, Ltd., supplied and installed approximately 30 miles of cable forthe 11 kV ring main, M.V. distribution network and pilot and control cables system interconnecting the distribution centres.Delivery of the cables began within three weeks from confirmation; of the order, after a "maximum effort" call to Derby Cables, Ltd.j*a subsidiary of the company. ^
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