Kingdom.] RAILWAY AND MARINE MECHANISM. 233

North Areas A. B. 10 to 34 ; 0. D. E. 1 to 10, & 19 to 33 ; F. 1 to 32 ; G. II. 1 to 13, & 19 to 26.

Warner and Sons’ Overshot Water-wheel.

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7. Patent vibrating standard iron pump, for ponds ormanure tanks.

8. Patent vibrating standard iron lift-pump on plank.

9. Patent garden-engine, with registered spreader.

10. Fire-engine, with folding handles, for the use ofmansions and small parishes.

The articles numbered 6, 7, 8, and 9 are patented bythe exhibitors.

425 Clark, George Delianson, 12 London Street,Greenwich —Inventor’s Agent.

Water-filter, a model in action, exhibiting a new mode,on the principle of natural filtration, self-acting, econo-mical, and applicable on a large scale for the supply ofpure water to towns and districts. Model of same attachedto a house-cistern, filtering the water as delivered fromthe main; connected with a self-acting regulator or water-meter, which governs and registers the supply with accu-racy ; and also connected with an apparatus for cleansingsewers with waste water.

426 Deane, John, 1 Cross Wall, Lover —Designerand Inventor.

A working model of a diver in his diving apparatus,consisting of a helmet, submarine dress, &c., in a reservoirof plate glass, containing about sixty gallons of water,the bottom of which represents the bed of the sea, withrocks, wreckage, &c., and the top a fortification, mount-ing ten brass guns, formed from metal recovered from thewreck of the Royal George by the constructor.

A glass model of a diving-bell, representing two mensupplied with air by a three-cylinder brass rotatory con-densing engine. Model diving helmet, submarine water-proof dress, &c.

427 Bywater, Witham M., 99 Piccadilly —

Designer and Manufacturer.

Water-meter, suitable to any pressure.

428 Turner, E. W. K., 31 Praed Street, Paddington —

Inventor.

Model of an invention for improving the water supply.

429 Botten, Charles, Clerkenwell —Manufacturer.

Appold’s self-regulating friction-break. The resistanceot this machine, when loaded to any fixed strain on thehandle, will not vary, whether it be well oiled and work-ing freely, or dry and with considerable friction. It isadapted for measuring labour in prisons, or ascertainingie amount of work performed by steam-engines andother machines. Patented by J. G. Appold, Esq., Wilson Iotreet, Finsbury Square. !

430 Underhay, F. G., 13 Well Street, Gray’s Bin Load.A variety of patent cocks and valves.

434 M'Nicholl & Vernon, Brunswick Steam Saw Mills,Liverpool— -Proprietors. (John McNicholl, In-ventor and Patentee.)

Working model of patent steam-travelling crane forlifting and removing heavy weights at the goods-d’epotof railways, in timber-yards, foundries, and other manu-factories, and for the loading and discharging the cargoesof vessels. The three motions—the horizontal, the trans-verse, and the hoisting—may be worked simultaneously,or independently, or any two in combination. — (SeePlate 23.)

1. This machine is adapted for the purpose of liftingand removing heavy weights at the goods-depots of rail-ways, in timber-yards, foundries, and other manufac-tories, and for the loading and discharging the cargoes ofvessels.

2. This is the first instance of the threefold motions ofa travelling crane being worked from a stationary engine.The three motions—the horizontal, the transverse, andthe hoisting motions—may be worked simultaneously, oreither of them may be worked independently, or any twoof them may be worked in combination. The model willexhibit the mechanical arrangements by which theseeffects are produced.

3. The efficiency of these machines may be judged fromthe circumstance that one of them, with a 50-foot span,will travel 100 feet in a horizontal direction, with a loadof three or four tons attached to it, in 45 seconds; andduring the time the whole platform with the load is somoving, the load may be moving across the platform atright angles with the motion of the platform itself; at thesame time, also, the weight may be raised or lowered asrequired. Cranes on this principle are being erectedwhere the span is 53 feet, and the length of the tramwayon which the platform travels is 266 feet, so that with oneof these machines the steam power is enabled to commandan area of 14,098 feet.

4. In addition to the immense saving in time that iseffected by these machines, the saving in the wages oflabour is very great; one youth, at ten shillings perweek, who travels on the machine (for the purpose ofmoving the handles in and out of gear), displacing thelabour of six men, at the same time doing the work moreefficiently. At a recent experiment this machine re-moved 13 logs of timber, containing 1,050 cubic feet,and weighing 19j tons, a distance of 100 feet (one log ata time), and piled them in 27J minutes, at an expense inwages of about threepence. The machine had thus tra-velled 2,600 feet, and made 26 stoppages in the timenamed, with an average load of 30 cwt. for half thedistance.

Steam power can, by this plan, be readily applied tothe ordinary hand-travelling cranes.

The following are the particular features, to which at-tention is directed :—•

Its novelty : see paragraph 2, above.

Its cheapness, inasmuch as one of these machines willdisplace two or three cranes of the most approved prin-ciples hitherto in use.

The great annual saving it effects in wages, as seen inparagraph 4, above.

The rapidity and precision of its operations: see para-graph 3, above.

Its freedom from liability to derangement. Several ofthese machines have been in use for upwards of sixmouths, working daily from morning to night, withoutstopping one hour for repairs.

This machine, like the ordinary hand-travelling crane,moves upon a tram-road laid upon longitudinal beams,raised from 15 to 20 feet above the level of the ground,the beams being supported at intervals by uprights. Asquare shaft, a (2^ inches diameter), runs the entire lengthof the tram-road, and is attached to the longitudinalbeams by moveable supports b, b, b. Tills shaft is con-nected at one extremity to the engine. Upon it, and re-