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PNEUMATIC TIRES

2nd November 1916
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Page 16, 2nd November 1916 — PNEUMATIC TIRES
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Which of the following most accurately describes the problem?

for Light Vans.

The commercial-vehicle user who uses pneumatic tires has need to exercise care in the selection. The' man of experience knows that in the majority of cases the most expensive tire in first cost is the cheapest in the long run. The new user would be well advised to bear this in mind. We deal more fully with the question of tires for vans on page 200 of this issue. As the details below go to show, the user has now a long list of suitable makes of tires from which to select. There are few manufacturers of pneumatics who do not make a tire particularly suitable for commercial van work.

Special Midland Tire for Fords.

The Midland Rubber Co. has ' recently, introduced a new size of its reliable pneumatic tire, which is specially designed for use on Ford v,ans. It is guaranteed to givea minimum mileage of 4000, and also to be a good non-skid. As our illustration will show, it is of the multi-rib type, _all rubber. A steel-studded tire is also made. If, as is unlikely, you know of no local 'agent, the Midland Rubber Co., Ltd., has its head office and works at Ryland Street, Birminghain 55 Per Cent, Additional Air Capacity.

The Goodyear Tyre and Rubber Co., Ltd., of Central House, Kingsway, 'London, W.C., has lately been devoting considerable attention to the question of over-size tires. It is pointed out that in the case of the Ford tire, for example, half an inch increase in the diameter of the cross section is equivaled to 35 per cent, extra air capacity and cushioning effect, which dispenses with the need for inflation to the extent necessary with a standard tire. The effect is, of course, less wear and ,tear on tire, chassis, and engine, and easier riding. The heavier tread, which, of course, is also a feature of over-size tires, has corresponding advantages. The over-size tires are made for all the usual forms-of rim, and are giving very good results. A ease quoted to us is that of a Belsize delivery van fitted with 815 min. by 120 mm. over-size Goodyear tires. One of these gave out after 9000 miles and was returned to the Goodyear depot for window display. The other is still going and has done 13,000 miles.

B50 Hermetics.

The Self-Sealing Rubber Co., Ltd., Hermetic Works, Ryland. Street, Birmingham, makes what are called the Yfermetic tires in the usual styles oT flat rubber treads, grooved round treads, and crossgrooved flat treads. The latter are particularly recommended for commercial work.

Victors.

Victor tires, we understand, are giving as good service on vans as they do on touring cars. This is undoubtedly a sign of quality. This tire is made for vans in the same style and section as those used for the other section Of the industry. The company, whose address is 15, Carteret Street, Westminster, S.W., should not be overlooked when tires are under consideration.

Chain-tread Tires.

The India Rubber Products Co., Ltd., of 47-48, Farringdon Street, London, E.C., makes both solid and pneumatic tires. These are supplied in all sizes, either millimetre or American, and to fit any of the usual styles of rim. A novelty in tire treads is afforded by what this company calls a " chain tread." It is claimed that it is. not a mere fanciful variation, but that it has certain special properties, in that it not only prevents sideslip, but also traction slip. The raised portions of the tire tread are thick, and the non-skidding qualities are, on this account, retained thro'ugh the greater part of its life.

Moseley's from Manchester.

We have received an advance copy of the Moseley Co.'s new catalogue of tires and new muchreduced prices, which only came into force yesterday. The Moseley grooved tire, which, by the way, is guaranteed for 3000 miles if run off within a period of six months, consists of five ribs. When the tire is new it runs mainly on the three inner ribs ; after a time these wear and leave a fiat square tread of considerable thickness in the centre, the two outer ribs still serving as a skid-resisting media This is a particularly good feature. It is often the case with a non-skid that its period of usefulness in the named capacity is short on account of the fact that the non-skid projections rapidly wear down. . A Skew Square Non-skid.

The skew square all-rubber nonskid cover, manufactured by Oylet's, Ltd., of 35, New Cavendish . Street, London, W., has been brought out, we understand,. specially for van work. It is substantial in section and the walls

are particularly section, so • that

there is not likely to be early trouble because of its giving way. The all-rubber non-skid is in particular favour on wood pavements, and the tread of this tire would appear to be well designed to afford a sufficient grip.

Suction Cups on Wood-Milnes.

Wood-Milne Ltd., of Preston, is meeting with every success in tire construction in connection with its van tires : the company's selection of a tire for the Ford, however, appears to have been unusually happy. We have been given to understand that such a demand for this has occurred that an increase of plant has had to be made in order to cope with it. This tire, which -we illustrate, is a combination of the cross groove, the longitudinal groove, and the square-tread cover. The depressions in the cover resulting from this combination form suction cups, thus ensuring a grip on the road and non-skidding properties.

Beldam Bulldog Tires.

Beldam tires are made in the usual styles, the most important being tho all-rubber, the steelrubber, and the "Bulldog." These are all made in sizes suitable for vans, and the same characteristic feature is observable in the arrangement of the tread either of the steel-rubber a the all-rubber ; we refer to the incorporation of a long narrow strip of rubber running along the centre of the tread and standing well up from the rest of the tire, this strip being supported on either side by protruding Vs of sblid rubber. in the steel-rubber tire, the centre of the portions of the tread formed by each pair of opposite Vs is removed and replaced by steel studs. Two additional studs are fitted between each pair of Vs. The drawing ofa section which we reproduce on thiS page serves to illustrate this special feature. The address of the Beldam Tyre Co., Ltd., is Windmill Road, Brentford, Essex. Tires which Carry Insurance.

Grimston Tyres Ltd., of The Camp, St. Albans, the maker of the tires of the same name, can claim particular interest on account of its insurance scheme. Under this scheme the user is limited to a maximum cost per mile. Each Grim ston tire is insured to the extent of 4000 miles, so that, in the event of a cover giving out before that mileage has been traversed, it can be replaced at a price proportionate to the amount of the mileage guaranteed whieh is not run.

Safety-track Tread.

The Goodrich special tire is of unusual design, the top layer of rubber on the tread being reinforced by five strips of rubber, each 2 ins. or :3 ins. long and about in. wide. The idea of this special safety tread, as it is called, is that it forms its own track and obtains a strong lateral grip of the road. This is the tire specially recommended for the back wheels of vans. Other sections, such as the steel-studded and the plain rubber, are also available from the B. F. Goodrich Co., Ltd., 117-123, Golden Lane, London, E.C.

Clinchers Tor Vans.

That well-known concern, the North British Rubber Co., Ltd., makes pneumatic tires in five distinctive models. Of these that which in touring-car work is normally supplied for limousines is particularly recommended for van work ; being designed for heavy touring-car bodies in the first place, it has an unusually thick tread, and the particular style of the cross pattern has, we understand, been very successful in obviating skids. In addition to the ordinary sizes, this is also made for Fords.

Stepney Road Grips.

Reference was recently made in these pages to the Anti-Rust band tubes manufactured by the Stepney Spare Wheel Ltd., Stepney Works, Llanelly. This company's particular form of Road Grip tires is, of course, well known. It is particularly suitable for commercial service, and the tire is of robust construction as well as lieing useful as a skid-preventer, an important feature on a commercial vehicle which cannot choose for its journeys days on which weather conditions are fadourable. It is worthy of note that the corrugations on these tires are particularly deep and practically outwear the tread of the tire proper. Avon Sunstones Again.

The Avon India, Rubber Co., Ltd., of 19, Newman Street, London, W., was also mentioned in these pages recently in connection with its Sunstone tires. This has a strong well-made cover very suitable for the rough usage which it will probably receive in commercial service.

Spencer, Moulton and Co.

George Spencer, Moulton and Co., Ltd., of 77-79, Cannon Street, London, E.C., makes a tire particularly suitable for Ford vans, and recommends an oversize tire for the back wheel, 31 ins. by 4 ins. This company appears to have laid itself out to meet the requirements of users of van chassis of American manufacture, as it makes what are termed straight-edge, quick-detachable, or non-rim-cut tires.

Telegraphs and Tires.

Henley's Telegraph Works Co., Ltd., of 18, New Union Street, Moorfields, London, E.C., makes pneumatic tires for all purposes. This company has also a special line of oversize tires, particularly for Fords. The all-rubber non-skid is of the cross-grooved variety. The steel-studded one has the studs built into a red composition central tread. This tire is of a special and distinctive design, and will be observed from our illustration to have a very deep section on the tread.

Dunlops. The Pink Form.

The consistently satisfactory service afforded by Dunlops was well known before the war ; its numerous uses in the war area and the satisfaction which it has given, whether as a solid or as a pneumatic, serves only to confirm pre-war convictions. It has recently been declared, by a prominent official, and one who knows, that the Dunlop factory is, in this war, a national asset.

Owners of commercial vehicles used exclusively for the conveyance of goods are, we understand, receiving special consideration at the hands of the Dunlop Co., which is, as is well known, actively engaged in supplying the War Department with tires both solid and pneumatic. Any would-be purchaser of Dunlops for use on a commercial vehicle should apply to the nearest Dunlop agent for what is described as the Pink Form. If the vehicle is, as stated above, used exclusively for commercial work, then he will have no difficulty in fulfilling the conditions for which this Pink Form calls, and he will then be able to get his Dunlop tires at a much reduced price, the quality, of course, remaining the same as usual—second to none.

B54 K.T. Cushion Tires.

The Coma-Lei-dal Tire Co., Ltd., of 22-23, Allat'llt Embankment, London, SE., is the sole licensee for that special form of tire known as the K.T. cushion tire. It will be remembered that this tire is built up of small inverted cups of rubber, , each of which, of course, contains air. From its peculiar cbnstruction the tire is naturally non-skidding, and this property lasts until the tire itself is done. It is not so long since some very: remarkable testimonials were being received from Russia, testifying to the nonskidding qualities of this tire.

A Pirelli Covers 16,000 Miles.

Results obtained on touring cars are seldom useful as criterions from which to judge the suitability for commercial work. The behaviour of Pirelli tires on a Ford, however, is worthy of note, particularly as so many Ford vans are in use. This tire, which was a standard 30 by 3?,, was put on to the front wheel of a Ford car in September, 1913. It has since, we understand, covered a distance of 10,000 miles, and, we gather, is still in use. The Pirelli Co. manufacture suitable tires for vans in the usual styles of tread. That which is adopted for the all-rubber non-skid is of unusual design. As will be gathered from the illustration at the bottom of this page, the distinctive Republican tread is of five rows of elongated lozenges.

Republicans.

The Republic Rubber Co., Ltd., of .54, Gt. Marlborough Street, London, W., is the European importers of the American Republic 'tire in both solid and pneumatic classes. Some very fine results, we understand, have been achieved by the latter on Admiralty tests, being fitted to fast and heavy cars arid run for approximately 200 miles a day for a given period. The company informs us that the reault is that Republic tires are still in good condition after two months of this running.

M. P. A . Tires.

The Motorists' Purchasing Association, Ltd., of Egyptian Rouse, Piccadilly, London, W., also produces a special van tire. It is made in substantial sections and with various treads to suit differing requirements. A notable feature is the guarantee which accompanies the commercial-velucle pneumatic ; it secUres 4000 miles for tires having all-rubber treads, ancP3500 for those of the steel-studded type. It is recommended that the M.P.A. tire should be fitted in conjunction with the same company's tube, which is also guaranteed. The latter is of red rubber and has one or two patented features, as well as an anti-rust strip and an embedded valve tap.


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