Better Shutter
Page 70
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A N improved type of metal roller shutter known as the Nyloy has been introduced by Dover Roller Shutters, Ltd., Spring Gardens Factory Estate, Romford, Essex,
together with a reduction in prices. The 2-in, wide laths are specially extruded in light alloy by Southern Forge, Ltd., to provide a male flange along one edge and a female on the other so that the pieces may be interlocked.
There is sufficient freedom for the shutter to be wound around a roller of 4 in. diameter when retracted. It may be arranged to be drawn into the roof of the vehicle, in which case the company advise the fitting of a tray so that water on the outer surface will not find its way to the load space beneath.
The extrusions are stated to be twice as strong and stiff as those used previously. When the shutter is pulled down, the exterior surface is flat except for the interlocks of the flanges. These have impeded the entry of water at 150 p.s.i.
End locks are made in Akulon nylon material, whereas steel was formerly employed. The locks fit closely in the steel-channel uprights and effectively reduce rattle yet slide smoothly, so that opening and closing the shutter requires little effort. The nylon is treated by the company to increase its toughness.
The Nyloy shutter, which has been developed during the past two years and is being ordered by a number of big operators, can be made in widths of up to 12 ft., as may be specified for sideloading vehicles, and in any length. It can also be fitted as a garage door.
Prices are about 5 per cent. lower than those of superseded types. A shutter measuring 5 ft. sq. is £19 5s. and one 6 ft.
sq. £27 3s. Spraying Oil
THE Junior penetrating-oil sprayer has I been redesigned by Tecalemit, Ltd., Plymouth, Devon, and now has a I-pt. container with a tapered-needle valve at the control handle, to enable delivery to be more readily adjusted during
The Tecaleniit junior oil-spray gun permits ready adjustment of delivery during operation. The reservoir holds one pint.
operation without the need for tools. The container is more easily filled, is pressurized and the nozzle is smaller.
Operated at 80-150 p.s.i., the unit costs E7 16s. with 16 ft. of hose.
Killing Insects AVAILABLE as a clear varnish or in a variety of colours, Lakil is an insecticidal paint introduced by J. Manger and Son, Ltd., Kingsland, London, E.8. It is claimed to be effective in all climates, and to kill quickly any flying or crawling insect, including woodworm, termites and grainborers, that
B36 comes into contact with a surface treated with it.
The insecticidal ability lasts for at least two years. Covering powers per gallon of the different grades of Lakil are as follows: clear, 100 sq. yd.; undercoat and gloss finish, 80 sq. yd.; wood primer, 60 sq. yd. Lakil is sold in small quantities and in drums, a typical trade price being £2 18s. for a I-gal. drum of undercoat.
Resin Hardeners DETAILS of three anhydride hardeners for use with Bakelite epoxide resin are contained in an information sheet issued by Bakelite, Ltd., 12-18 Grosvenor Gardens, London, SW.!.
Light Crane HAV1NG hydraulic controls. a 2-ton .I. J. crane produced by Tunny Cranes, Ltd., Moreton-in-Marsh, Glos, is a lightweight appliance claimed to have exceptional mobility. It comprises a platform upon which is mounted a slewing turntable, a derricking jib, and a rope hoist. If two wheels and a drawbar are added, the crane can be pulled behind
a tractor, but it may also be mounted on a lorry of the 4 x 4 type.
The jib may be slewed through 300 degrees and the rate of stewing is 2+ r.p.m. As the projection of the counterweight is limited, the crane may be employed in narrow passages.
Fibre boards Listed QVER 200 different brands of fibreboard are described in "Building Board Directory," published at 4s., including postage, by the Middlesex Publishing Co., Ltd., 194-200 Bishopsgate, London, E.C.2.
Fibreboard is a generic term covering hardboards, insulation boards, chipboards, acoustic tiles, plasterboards, asbestos sheets and kindred materials, and the directory gives a brief description of each with data on sizes, and the names and addresses of importers and stockists.
Master Switch
COSTING £1 Is., a battery master switch made by Joseph Lucas, Ltd., Great King Street, Birmingham, 19, may be mounted on either the negative or positive terminal of a battery. The action of opening the switch breaks the earth connection. The unit is offered as an antitheft and safety device.
Tyre Innovation TOprovide a tyre to match the improved performance of modern light goods vehicles, the Dunlop Rubber Co., Ltd., have introduced their Highway tread pattern on their range of truck-type tyres. The new tread, which is slightly wider and flatter than that of the Highway, has knife cuts to give stability when cornering fast. The casing of the tyre is protected from glancing blows by sturdy buttresses.
Nylon Booklet A BOOKLET describing the properties
and applications of their nylon products has been issued by Polypenco, Ltd., 68-70 Tewin Road, Welwyn Garden City, Herts. The company make nylon rod, strip, plate, tubing and bar.
Filing Concavities PRICED at 3s. 6d., half-round blades for Stanley shapers are now available from Stanley Works (G.B.), Ltd., Rutland Road, Sheffield, 3. The blades are for filing concave surfaces and may be used on wood or mild steel.