Machine and Other Tools.
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The machine tools shown are a far more important exhibit than has been the case with any previous show, a number of the firms who cater specially for motor manufacturers having stands. The whole of the space under the North Gallery is taken up with tools, whilst one important exhibit, that of Alfred Herbert, Limited, is placed on the opposite side of the hall.
Of the exhibitors, Burton, Griffiths and Company, Limited, of Ludgate Square, Ludgate Hill, London, E.C. (Stand No. 6), has a considerable variety of tools of various types including a useful full automatic lathe and a small general gear-cutter. A bevelwheel shaping-machine, in which the teeth are shaped to a cutter, first one side of the teeth, and then the other, being brought to the proper form, is of special interest. In this connection, it is to be regretted that the tool for automatically grinding bevel and other teeth after hardening was not ready for the show. This tool should fill a longfelt want, for it will correct any distortion caused through hardening. A small sensitive drill, with two heads, capable of drilling up to 4-inch holes, should be examined, whilst there is also exhibited a tool for trueing the inside of square or hexagonal holes such as are now so generally used in propeller shafts, etc. This consists of a very small emery wheel, which is held on the side of a small shaft, and runs at a very high speed.
In many repair shops, the work dealt with is not sufficiently great to warrant the laying down of power-driven tools, and for such places Drummond Brothers, Limited, of Ryde's Hill, near Guildford (Stand No. 5), caters, This company shows six lathes fitted for either treadle or...power, and on these demonstrations are given to show how they may be utilised for small milling work when necessary. The chief sizes of lathes manufactured are the 3i-inch and 5-inch centre ones; these are selfacting, and can be used for sliding, boring, or screw-cutting. A new handlever shaping-machine, for use on a bench, is also shown, and the utility of these tools for motor repairers we have dealt with in previous issues.
Alfred Herbert, Limited, of Coventry (Stand Nos, yoo and toy), has on its stand several of the well-known makes of tools, including several turret and capstan lathes. The largest of these, the " No. y6 " combination turret
lathe, is specially adapted for dealing with cylinders, fly-wheels, and gear blanks for automobile work. In this connection, it may be stated that double cylinders are shown which have been bored, faced, etc., in 2 hours to minutes on one of these machines. In addition to drills and milling machines, there is shown a special tool for grinding in valves : it has been devised wholly with this object in view. As will be seen from the illustration, the general construction is that of a drill; but, in place of the spindle, there is a short piece of flexible shafting which terminates in a holder surrounded by a wooden handle that does not revolve. The holder is prodded with a removable screw-driver, to fit in the top of the valve and cause it to rotate. At the bottom of the valve spindle is an automatic lifting apparatus which, it will be observed, causes the valve to be lifted off its seat periodically, the workman pressing it down again with the handle. It has been found that, in a factory, valves can be ground in in this manner in a third of the time that is occupied when the work has to be done by hand.
A good tool on the stand of Ludwig, Loewe and Company, Limited, of Farringdon Road, E.C. (Stand No. 1), is the crank-turning lathe in which a special steady rest allows of the work being clamped quite close up to the tool, a very important point with motor shafts of any length, and one which allows of reliable work being turned out. A machine adapted for finishing the edges of wheels, pulleys, gear, blanks, etc., is the rotary milling ma. chine in which the work slowly rotates in front of the cutter. This is automatic, for, after a complete revolution, the work is thrown from the tool. A large vertical milling machine is of the type largely used for facing up surfaces, such as the joints of gearboxes. A number of lathes and drills ate, also, on this stand, as is a small automatic lathe capable of turning out small screws such as are often used for attaching thin metal work. A cylindrical grinder of the well-known Norton make is on the stand, This company has a stand in the gallery (No. 159), and on this is shown a "Baker Grip" chuck as illustrated. In this no key is required, the bottom portion of the chuck being held causes the jaws to open and, when the tool is in, any force on the drill, causes the jaws to tighten their grip on it.
Richard Melhuish, Limited, of 84-87, Fetter Lane, E.C., on two stalls (Nos. 7 and 8) shows a large assortment of small tools and appliances, amongst which are a small saw and drill mounted on one bed and capable of dealing with light repair work.
A large number of machine tools are on the. stand of Messrs. Selig-Sonnenthal and Company, of 85, Queen Victoria Street, and Lambeth Hill, London, E.C. (Stand Nos. 2 and 3). These include a 30-inch vertical boring mill, by Bausch, a type of machine largely used in America, and the employment of which is increasing in this country. A lathe adapted to motorcar work is one in which, in the place of a set of gear wheels leading from the tail-pin to the main screw, four spindles, each of which can be provided with a bush, screwed to a separate pitch, are provided. These can be revolved until the one having the desired threads per inch comes opposite to a former which draws the tool forward at the desired rate. The advantage of this, when on work requiring several threads of various pitch, is obvious, as all changing of . gear wheels is done away with, all that is necessary being to bring the spindle with the corresponding number of threads, which is driven at the same rate as the work, under the former. Another handy tool for small shops is a small planing machine, which can be operated by either treadle, handle or power, and on which work of some size may, when necessary, be placed.
A stall which should on no account be neglected is that of Richard Melhuish, Limited, of Fetter Lane. This company's speciality is small tools, and several drills and lathes for treadle or power are shown. There is also exhibited a small cold-iron saw, worked by hand, and likely to prove useful in repair shops. Several small shapingmachines for fixing on a bench are on the stand, and a feature of the exhibit is the well-arranged kits of tools suitable for commercial vehicles.
Gears and Gear Wheels.
One or two well-known firms show examples of gears and gear wheels, and these include Messrs. D. Brown and Sons, Limited, of Park Gear Works, Lockwood, Huddersfield, on whose stand there are three gear-boxes complete. These are well finished, as is the case with all the products of this firm, the gear being well cut and the boxes of their own pattern being well designed. A large number of bevel and gear wheels for bus and lorry work are shown, and a good example of a reversible worm and worm wheel. A special feature is made of raw hide pinions, of which a large number are turned out. An example of steering gear is shown, and the firm make a speciality in wood handles, having put down recently a plant for their manufacture at their pattern works.
Messrs. E. G. Wrigley and Company, Limited, of Foundry Lane Works, Birmingham, show a selection of gear wheels of all types suitable for heavy motor vehicles.
Ballbearings.
Messrs. Ludwig, Loewe and Company and the Hoffmann Manufacturing Company show examples of their wellknown productions, which we have dealt with fully in comparatively recent issues. The former are of the wellknown " D.W.M." type, and some balls of very large size are on this stall. The Floffmann Company show sections of various types of bearings built up on their system, which very clearly show their construction and the advantages of the methods employed. An interesting portable, electric saw is shown by Mr. E. Herder (Stand No. 185), and this neat combination might prove of considerable use wherever electric current is available. Small Tools and Sundries.
Fastnut, Limited (Stand No. 157) has a selection of its well-known washers, and we understand that the reward offered by the company in connection with these washers, as regards any proof of their having failed, has yet to be claimed.
There are a number of exhibitors who show the various small tools, etc., which are necessary in commercial work, and we have referred to some of these in the machine-tool section. On its gallery stand (No. 159), Ludw. Loewe and Co., Ltd., shows a selection of gauges, laps and reamers, as well as milling cutters for gear. E. G. Wrigley and Co., Ltd. (Stand No. 221), is now making a speciality of highspeed twist-drills, and shows some remarkable drillings taken with a heavy feed ; it also shows sets of milling cutters for cutting teeth of all sizes and description. Messrs. E. N. Bentall and Co. (Stand No. 226) are on the War Office and Admiralty lists for bolts, studs and nuts, and show excellent examples of their products in this direction, whilst on the stand of the "American Importing Company" (No. 1,56), of 8, Long Lane, Aldersg-ate Street, B.C., is a new tool called the " Auto-cle," which is a box-spanner adapted for taking various sizes of nuts, and which, by means of an eccentric or universal joint, readily allows of nuts in awkward positions being easily reached.
Carburetters are shown by Brown and Barlow, Limited (Stand No. 192), and by the Evans Carburetter Syndicate, Limited (Stand No. 162).
The Valor Company, Limited (Stand No. 170), has a fine collection of its "New Era "fire-extinguishing apparatus, and models of the various sizes, both for vehicle and depot use, are available for examination.
Speed indicators, which may become necessary for motorbuses, and which some users of motorvans have fitted to a number of their vehicles already, are shown by the Cowey Engineering Company, Limited (Stand No. 190), and S. Smith and Son, Limited (Stand No. 188).
Radiators.
Messrs. J. Marston, Limited, of Paul Street Works, Wolverhampton, show a variety of bus and lorry radiators of the Megevet type for Milnes-Daimler, Tilling, De Dion, Durham-Churchill cars, etc., the latter which has the bonnet attached being.of particularly large size.
The Doherty Motor Components, Limited, of CoVentrY, show a number of various types of radiators, including their well-known tubular ones, which are being extensively used, and one of a new type, which we shall deal with more fully later. On this stand are also shown examples of the lubricators, tanks, and spmnings in which this firm specialise. One of the latter is an exceptionally good job, being an aluminium clutch cover, the spinning being over 6 inches in depth. . Other details are of equal interest.