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Aviation History
1956
1956 - 1409.PDF
FLIGHT, 28 September 1956 561 THE INDUSTRY Quick-reference Drawing File KEEPING blueprints, tracings, charts and other drawings flatand undamaged, and at die same time quickly accessible, often presents a problem. One solution, a compact filing system called "The Planfinder", has been devised by Steeldex, Ltd., 1 Castle Court, Birchin Lane, London, E.C.3. The device has flexible covers and a wooden spine from which separator guides extend, each one lying slightly above its pre- decessor and being turned over at its outside edge to form a flap. The corner of each flap, cut off at an angle and reinforced with a special tab, can be marked with a letter or number for quick reference; and the guides allow blueprints or drawings to lie flat and to be withdrawn or replaced without difficulty. The Planfinder is available in eight different models, varying in size and style, and can hold up to 50 drawings. Solderless Terminal Applications "CROM Aircraft-Marine Products (Gt. Britain), Ltd., 60 Kingly •*- Street, London, W.I, has come information on developments and new applications of A-MP solderless-type cable terminals, particularly in aircraft installations, where space and weight compel the use of miniature wiring components and where shock and vibration may be encountered. According to a recent fully illustrated brochure published by Aircraft-Marine Products' "Patchcord" system. The "Planfinder," described at the top of column 1. the company, aircraft-type connections are now available with female halves to accommodate A-MP taper-pin wire ends, which eliminate time-consuming soldering operations. This type of tapered connection, it is stated, has passed U.S. military accept- ance tests, under extreme conditions of vibration, mechanical and thermal shock, and corrosion. In addition, computers and electronic devices can be further "miniaturized" by designing around the A-MP Patchcord pro- gramming system utilizing taper pins (see illustration). Attachment of fittings to cable ends is by means of automatic machines or hand tools selected according to production require- ments. Versatile Angles T TNDOUBTEDLY the highlight of a gathering held last week *^ at Bush House, London, by Dexion, Ltd., was a description by Dr. Vivian Fuchs of the programme to be followed in the exploration of the Antarctic by the British teams before the sun is lost to them on May 4 next year. Dr. Fuchs said that stores deposited at Shackleton Base were already covered by 15ft drifts of snow and that the expedition would have to employ mine detectors to find them. Some 300 miles farther south, said Dr. Fuchs, a new base was to be built, and the stores there would be placed on scaffolding constructed of Dexion slotted angle girders. This system, he thought, would enable the drifting snow to blow through and past the stores and there would be no trouble in finding them again. There is, however, no need to go to the Antarctic to find uses for this highly adaptable structural material. Almost every air- field and factory has a "cemetery" of old servicing platforms and jigs, whioh, had they been made of slotted angle, could have been re-erected for a different purpose instead of being discarded. Dexion slotted angle has also been used for jury-rigging a badly damaged aircraft into flying condition (see Flight, April 13,1956). IN BRIEF The Air Navigation Development Board, which co-ordinates civil and military radio-navigational requirements in the United States, has placed an order for Cossor secondary-surveillance radar equipment, including ground station units and airborne transponders. This order will enable the A.N.D.B. to determine the methods whereby the Cossor sidelobe suppression system can be integrated with other radar techniques in their air traffic control network. * * * The British Welding Research Association is preparing a series of six booklets on the argon-arc welding of aluminium and its alloys. Part I, The Principles of Argon-arc Welding Aluminium (2s 6d, post free), and Part II, Electrical Character- istics and Equipment for Argon-arc Welding Aluminium (5s, post free), have already been published and may be obtained from the Association's offices at 29 Park Crescent, London, W.I. i review of accessory developments in our issue of August 31 ace was made to "one of the most unusual, and most Inai referenc elegant" solutions to the problem of accommodating under- carriage units within high-performance aircraft, i.e., the method employed in the English Electric P.I. It should be made clear that all P.I undercarriages are, in fact, of British Messier manufacture. * * * A new Anglo-American company, Ketay, Ltd., has been formed for the production of precision synchros, servomotors, resolvers and tachometer generators for use in computers, radar sweep circuits, phase shifters and accurate data-transmission systems. The company is a joint one, formed by the Plessey Co. and the Norden-Ketay Corporation of New York; its offices Mr. W. A. Burnside, A.R.Ae.S., has been appointed sales manager for R. B. Pullin and Co., Ltd., Brent- ford, Middx., one of the Pullin Group of companies. Other news from Brentford is that a new member of the Group, Victoria Instruments, Ltd., Victoria Road, London, N.W.10, has taken over control of Victoria Instruments, formerly operated by V.I.C. (Bournemouth), Ltd. are at Eddes House, Eastern Avenue, West Romford, Essex. Directors are Messrs. A. G. Clark, E. J. Earnshaw, and A. E. Underwood of Plessey, and Mr. Morris F. Ketay of Norden- Ketay. 1 * * * Muirhead and Co., Ltd., Beckenham, Kent, announce that a range of precision test equipment, similar to that used in their own synchro test rooms, is now available. It is designed to perform the electrical accuracy and residual voltage tests specified in the U.S. Navy Bureau of Ordnance Specification MIL-S-16892, and in addition provides facilities for zeroing, transformation ratio measurements, and current and power measurements. Also available, for immediate delivery in limited quantities, are "super synchros Type 18CT4a" and Type 15TR4a.
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