New Equipment and Publications
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Portable Bandsaw
A PORTABLE metal-cutting handsaw, E--1 named the "Baby." has been introduced into Great Britain by Soag Machine Tools, Ltd., London, &El 1. The handsaw is a portable, compact machine, weighing only 21 lb., and is said •to be capable of cutting through I fin.-diameter mild-steel bar in 80 sec.
Drive to the blade is from a built-in h.p. motor through helical gears. The blade is guided by two pairs of hardened steel rollers and is kept under constant tension by means of a rack and pinion mechanism. A half turn of a rotary button releases the blade tension.
The machine is supplied complete with saw blade and will cut round bar up to 21. in. diameter and profiled material up to 41: in. by 3 in. Overall dimensions are 21+ in. by 7+ in. by 61 in„ and the cutting speed is 115 ft. per minute.
Optional extras available include special guide rollers for slitting and a stand with worktable for converting the machine to a vertical bandsaw.
Price of the machine, which is suitable for 220/250 v. single phase, is £56.
Nylon Tubes for Bearings I-1 A COMPLETE range of nylon tubes,
designed to extend the availability and uses of nylon bearings in industry, is now obtainable from Polypenco, Ltd., 68-70 Tewin Road, Welwyn Garden City, Herts.
The range contains one hundred and sixteen standard sizes of MC nylon tubes, ranging from 2-in. O.D. x 1-in. I.D. to 15-in. O.D. x 141-in 1.D. Many sizes are available from stock or can be supplied on a " 48-hour service" basis.
Developed particularly for bearing and wear-part application, MC nylon can be readily machined to make components such as bearings, guides, slideways, valve scats, gears and other wear parts from tubes, plate discs and square, round and hexagonal rod.
Nylon Conveyor Wheels A NEW product from Dexion, Ltd..
Maygrove Road, London, N.W.6, is a specially treated nylon glidewheel intended for use in gravity conveyor systems. Designed for operation without the bush assembly normally found in conveyor wheels, it is weather-proof and non-corrosive, and lubrication and maintenance are eliminated. The wheels are
2j-in. diameter and fin, wide and are claimed to have a long working life.
As with Dexion's earlier unit, the nylon version is designed for use in association with the company's range of slotted angle. and being completely weather-proof, can be used for permanent outdoor gravit■ conveyors.
Trade users' price is El 13s, 4d. pa: unit pack of 25 wheels, including the necessary non-corrosive fixing nuts and bolts. Single wheel assemblies are Is. 4d each.
Improved Welding A TECHNIQUE for sheet-metal I-1 welding which is claimed to have many advantages over gas and resistance welding, including lighter equipment and more consistent quality of welds, has been developed by the British Oxygen Co., Ltd. The new method is said also to be cleaner and tp eliminate distortion. so reducing jigging of components. Additionally, it makes planishing after weldine unnecessary.
The equipment comprises British Oxygen's new 16-oz. ST.2 torch, a Lynx wire feed and control unit and a slopecontrolled rectifier designed for semiautomatic welding, using the shortcircuiting-arc technique. Carbon dioxide is used as the shielding gas for welding.
At present, the equipment is being used on steel thicknesses from 20 to 16 s.w.g., but its potentialities are claimed to include welding plate up to fin. thickness.
Aerosol-packed Silicone Grease
Q1LICONE grease, MS4, which is mainly used for protecting and insulating ignition systems and other electrical equipment, is now being marketed in an Aerosol pack. under the name Ambersil MS4. by Amber Oils, Ltd., Ila Albemarle Street, London, W.I. The Aerosol pack provides a convenient and efficient means of applying the grease. providing a thin, even, protective film.
MS4, a product of Midland Silicones. Ltd., is highly water-repellent and oxidation-resistant, adheres readily to dry surfaces, and is said to protect and maintain the flexifiility and resilience of natural and synthetic rubbers, vinyl plastics and similar materials. On ignition systems, MS4 can be used for protection against moisture and preventing electrical leakages. It is also useful for such purposes as treating terminal panels, plugs and sockets of trailer cables, battery leads and terminals in wet and corrosive conditions.
The cost of a 12-oz, tin of Ambersil MS4 is 15s. which reduces to 13s. per lin when ordering one dozen, to Its. 6d. when ordering three dozen and to 10s. when ordering one gross or more.
Improved Shutters THE latest design of Eezilift rolling shutters made by Howard Bros., Ltd., Abbey Manufacturing Estate, Mount Pleasant, Wembley, Middlesex, utilize 1-in, or 2-in, interlocking aluminium alloy galvanized steel laths of flat or curved section.
Silent and easy operation is claimed for the new shutters, mainly as a result of the fitting of nylon friction pads to he bottom angle.
Welding Brochure A BROCHURE entitled Resistance Welding Electrode Materials has been produced by Enfield Rolling Mills, Ltd., Brimsdown, Enfield, Middx.
The 17-page brochure contains details of copper alloys and parts applicable to resistance welding machines. Also included are notes on the design of spotwelding electrodes and details of standard electrodes which are stocked.