New Equipment and Publications
Page 64
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Quick Insulation
THE application of foam. plastics insulation is greatly simplified with a spraying technique and equipment developed by the Aerograph-DeVilbiss Co., Ltd., Lower Sydenham, London, S.E.26, in conjunction with Baxenden Chemical Co„ Ltd., Clifton House, Euston Rd., N.W.1.
With the equipment, called " Foam-inplace," rigid polyurethane foam can be sprayed on to any article to be insulated. The two liquids which go together to make the polyurethane are sprayed separately through a special gun and are thoroughly mixed outside it. A thin film of the material is applied to the article and in a short time this expands to a 2-in, layer of rigid foam. Additional
Non-ferrous-metal Catalogue THE latest stock catalogue from E. J. Holmes, Ltd., North Street, Romford, Essex, gives prices and details of the range of aluminium and aluminium-alloy sections available from this company, and includes many applicable to commercial-vehicle body building.
Also listed in the 36-page catalogue are sizes of Perspex, brass and copper rod and sheet, and phosphor-bronze bars which are also stocked.
Flat Heating Tapes A NEW type of electric heating tape 1-1. has been developed by The Midland Electric Installation Co., Ltd., Upper Villiers Street, Wolverhampton, a member of the Deritend Group of Companies.
Named Hotfoil, the new tape has flat heating elements of metal foil, insulated and then covered with different materials. to give three types, suitable for varying applications. Type A is 1-in. wide, has six elements and a double plastic insulation which make it suitable for use in confined spaces for heating up to 110° C. Type B is similar to type A and has the
B30 layers can be applied to increase the thickness of the insulant.
This new process will have many applications, amongst them quick and easy lagging of service pipes, heat ventilation ducts and storage tanks. In addition, the foam can also be used to strengthen plastic and metal panels and provide anti-drumming insulation.
Total cost of the equipment, complete with hoses,-eonnectors and sundry fittings is £416.
same heating. capacity but has an additional woven-glass protective covering. Type C has four elements, a triple wovenglass insulation and is suitable for heating up to 450° C. Types A and B are available in lengths from 12 to 100 ft. and type C in lengths from 6 to 70 ft. All three end in flexible leads, 2-ft. long for connection to the electric supply.
Among applications quoted as suitable for Hotfoil tape are combating heat losses from pipes, tanks and vessels and protecting steam and water pipes against frost.
Aluminium Extrusions THE full range of Impale° aluminium and aluminium-alloy extrusions made by the Imperial Aluminium Co., Ltd., is contained in a new catalogue produced by this company. In order to simplify both reference and presentation, the range is included in two volumes, which classify the sections either by shape or by use.
Volume 1 details the complete range of flat-bar, round, square, hexagonal, angle, channel, top-hat, T, and Z sections, whilst volume 2 gives a selection of the shapes for which dies are held, and segregates the extrusions according to the industry in which they are used.
Pressure Cleaning Equipment rLEAN1NG and degreasing apparatus which originated in Canada is to be manufactured in Britain by Opancol, Ltd., 20-21 Took's Court, Cursitor Street, London, E.C.4, and marketed under the trade name of the Opancol Kleen Gun.
This equipment utilizes the exhaust gases from any engine of 2 litres or more and, used with a suitable cleaning compound mixed with water, develops a high-pressure cleaning spray. Pressure at the nozzle is in the region of 150 p.s.i. to 200 p.s.i. depending on the size of the engine.
Complete with 14 ft. of stainless-steel flexible hose, and universal exhaust attachment, the Kleen Gun costs £39 10s. including packing and delivery. Cleaning compound is supplied in two grades, one for general cleaning, the other (which contains 10-15 per cent. caustic soda) for heavier work. Both grades are priced at £4 I5s. per 50-lb. drum.
High-pressure Grease Gun .
DRESSURES exceeding 6,000 p.s.i. are 1 said to be obtainable with the " Swematic " lever grease gun, which is .distributed by Lawrence Edwards and Co. (Engineers), Ltd., Stourport Road, Kidderminster.
Light, medium and heavy greases can be used in this strongly made gun, and a bleeder valve is fitted to facilitate the release of air locks. Overall length is 1 ft. 3 in., plus a 6-in, cranked extension pipe, the 101-in.-long 21-in.-diameter container having a capacity of 16 oz.
Retail price of the Swematic " highpressure grease gun is £1 19s, 6d. including the cranked extension pipe and an hydraulic chuck, which proved very effective when the gun was tested. A swivelling chuck and a 12-in. flexible pipe are also available, priced at 11 5s. and LI respectively.
Sales Journal THE latest issue of Transmission Times. the quarterly sales journal of SelfChanging Gears, Ltd., Lythalls Lane, Coventry, is said to be the largest issue to date.
Copies of the journal will be supplied free of charge to interested companies who should contact the company's publicity manager.