292

Class 6.—MANUFACTURING MACHINES AND TOOLS.

Nobth Areas A. B. 10 to 31; 0. D. E. 1 to 10, & 19 to 33 ; G. H. 25, 26.

[United

Oil-testing machine. Invented by Emanuel Thomas,of Manchester.

Registered theodolite. Designed by Henry Goss, ofSalford .

Specimens of embossing. Lithographs of copying andembossing presses.

Soap-cutting machine. Invented by Walter Storey, ofManchester.

209 Lewis, Francis, & Sons, Manchester —Manufacturers.

Wheel-cutting and dividing engine for cutting bevel-spur and worm wheels.

Model of Lewis and MacLardy’s patent roving andslub spindle for cotton, wool, flax, and other fibrous sub-stances, and of spindle for doubling any descriptions ofyarns on the same principle.

207 Hunt, John, per C. Boyd, 15 Addison Road,Kensington —Inventor.

A mineral washing-case, designed for the more expe-ditious and effectual washing of gold, silver, tin, copper,and lead ores, and applicable to all kinds of mineral, thespecific gravity of which is greater than the foreign matterwith which it is mixed. The superiority is said to con-sist in the great ease, rapidity, and economy, with whichores can be treated, as compared with the ordinarysystem, the latter requiring that the mineral to beoperated upon should be previously separated from clay,adhesive matter, and stony particles. The inventor statesthat chiefly by means of this washing-case, he has beenable to recover about 550,000 francs’ worth of silver andlead ores from the “ debris” of the ancient mine of“ Pont-pean,” near Rennes, in France , of which he is theoccupier.

210 Shanks, Andrew, 6 Robert Street, Adelphi —Inventor and Manufacturer.

Bolt screwing and tapping machine. This machinecuts a perfect screw at one operation, and not by suc-cessive cuts.

Improved high-pressure steam engine.

Detail planing machine, one being for hand power foropticians and amateurs.

212 Johnson, R., & Brother, Dale Street, Manchester—Manufacturers. (Agents in London , Messrs.Tootal & Browne, 73 & 74 Piccadilly.)Wire-drawing benches, showing the process of drawingstrong and fine sizes of iron wire.

Specimens of fine-drawn iron wire.

208 Garforth, William, John & James, DukenfieldIron Works, mar Manchestei —Manufacturers.

Steam riveting machipe, having direct action. Thefollowing engraving gives the form of the machine, whichconsists of a strong cast-iron frame, a cylinder 36 inchesin diameter, with piston and rod, on to which high-pressuresteam is alternately let and discharged; the riveting por-tion being acted on directly by the piston rod, and theplates are thus closed and the rivet formed.

Garforth’s Steam Riveting Machine.

'VUzJJiS'

With this machine, one man and three boys can rivetwith perfect ease, and in the firmest manner, at the rateof six rivets per minute, or three hundred and sixty perhour.

Annexed to the drawing of the riveting machine is asection of two pieces of boiler plate, riveted together bythis machine, and planed through the centre of the rivet,to exhibit the accuracy of the work.

213 Parr, Curtis, & Madeley, Manchester.Planing-machine. Lathes, &c.

214 Taylor, W., 33 Little Queen Street, Holbom —Inventor.

Metal press used for striking medals for the Exhibition.

215 Bennett, Joseph, 1 Thistle Street, OldhamRoad, Manchester —Designer.

Shaded drawing of a large and powerful self-acting slidelathe for surfacing. Headstocks 42 inches high.

A lathe of this nature has been manufactured byMessrs. J. & D. Glasgow, Manchester, for Her Majesty’sDockyard, Plymouth.

218 Hick, B., & Son, Bolton —Designers andManufacturers.

Model of exhibitors’ improved compound hydraulicpress. This model shows the arrangement of an im-proved press, now at work on the premises of the exhi-bitors at Bolton, having four cylinders of such areaas in the aggregate to be equal to 2,500 tons pressure.Among the various advantages attributed to this plan,are, that, the four cylinders may be worked togetheror two at a time; and much better castings are obtainedin consequence of the diminished weight, each of thecylinders weighing only two tons (about eight tonsthe four), whereas one cylinder equal in power wouRweigh 20 tons. The model pumps and apparatus at-tached are equal in power to a single press with cylindesix-inch diameter. Accompanying this model are severeblocks of iron, eight inch diameter, which have beepunched cold by the large press. The pressure necessaryfor such an operation, being, for iron, ll in. thick, 'tons; 2 in. thick, 950 tons; 2j in. thick, 1,250 tons; 3 t •thick, 600 tons, and in. thick, 2,050 tons. Fig- 1presents this machine.

[The hydrostatic press was invented by the late Mt-Joseph Bramah, a.d. 1796. Motion is communicate ^the ram by injecting water (or other fluid capab ®sufficient resistance) into the cylinder, within whic ^ram moves. The amount of force given to t * ie „ r t ] iedepends upon the proportion between the area oplunger of the injecting pump and that of the ram ’the force can be indefinitely increased, either by ex^ ^ing these proportions or increasing the leverage o