OBJECTS LENT OR PROVIDED FREE OF CHARGE TO THE BRITISH EXECUTIVE COMMISSION.

Appleby Brothers, Emerson Street, S.E., London.

THREE PORTABLE STEAM CRANES.-One crane similar to the accompanying engraving. Fig. 1 is designed to work loads up to three tons, and is specially constructed for use on Railways. It is mounted on a wrought-iron carriage fitted with axle boxes, bearing springs, buffers, and draw springs the same as on an ordinary railway truck or carriage, so that it may be coupled up behind a locomotive, and rapidly taken wherever required; this renders the crane a far more useful tool to Railway Companies than if it were mounted on axles running in rigid bearings. It is claimed by the manufacturers that much saving of time and money might be effected by the employment of a few cranes of this type in place of the many fixed cranes now employed at Railway Stations, some of which are not required for service perhaps once a month, and it must be evident to anyone that it is far more convenient to be able to bring the lifting machine to the load to be dealt with, than to have to take the load to the crane. The framework of the crane carriage is built up of wrought iron, and a strong cast-iron plate is fixed ca the centre of carriage into which the crane post is keyed, and on which the turned roller path is situated. The crane performs four distinct operations by steam, namely, lifting the load, travelling along the lines, altering the radius, and revolving round the post. The cylinders through which the power to perform these various operations is obtained, are fitted with link reversing motion, and are fixed at a slight angle outside the side-frames. These side-frames are strong A-shaped castings on which are carried all the bosses and bearings required for the various motion shafts, &c. There are four speeds of lifting for loads of varying weight, and the loads may either be lowered by steam, or by means of a powerful brake provided on the barrel shaft, which is actuated in the usual manner by a strap and foot lever. The brake lever is furnished with a pawl to hold it down, so that the heaviest loads dealt with may safely be left hanging for a short time. The travelling motion is obtained by a shaft passing through the centre of the crane post, this shaft giving motion to a horizontal one under the crane carriage; from this latter shaft the power is conveyed to the axles by pitch chains, which allows for the

FIG. 1.

deflection of the bearing springs. When the crane is coupled up behind a locomotive the motion just described is thrown out of gear. The jib is a STRAIGHT wrought-iron lattice jib, combining the requisite amount of stiffness with the minimum weight compatible with safety. The radius of the jib is altered by means of a double chain and worm, and tangent wheel; this arrangement not only forms an easy plan of obtaining the large power necessary, but the worm locks the jib in any required position. The turning or slewing motion is obtained through a set of bevil wheels and friction clutches on the crank shaft; and can be worked in either direction simultaneously with any of the three other motions. The friction clutches drive a vertical shaft which in its turn through a train of gear drives a turned roller running on the roller path, and situated at the foot of the jib. This motion being obtained entirely by the friction of surfaces and not through the medium of toothed gear on the base-plate, the risk of breakage due to careless driving is entirely avoided. The price of the crane Fig. 1 as above described, to lift three-ton loads at 14 feet radius, and proportionately lighter loads at longer radii with steam travelling motion, with iron jib, and boiler felted and lagged,

Two other cranes exhibited by the same firm are each capable of dealing with loads up to FIVE TONS; they are illustrated by engraving Fig. 2, and, although very similar in general appearance to the 3-tons crane

They

described above, they vary from it somewhat in detail. One
of these cranes (No. 43) is fitted with all the four motions
detailed above, whilst the other (No. 41) has only three of
the four motions, the travelling motion being omitted.
are both mounted on PLAIN CAST-IRON CARRIAGES, with rigid
bearings for axles, and are not adapted for running at very
high speeds. The various operations are performed by exactly
the same means as in the three-tons crane, excepting the
travelling motion in which the pitch chains are replaced by
bevel gearing, the whole of the parts being of course pro-
portioned to the loads to be handled. The price of the crane,
Fig. 2, as above described, to lift five-tons loads at 14 feet
radius and proportionately lighter loads at longer radii,
with wood jib, boiler not felted or lagged, with steam
travelling motion (No. 43),

Set of duplicate wearing parts for ditto, ditto, ditto

£610 0 0
£15 0 0

Price of the crane, Fig. 2, to lift five tons as above described, but not to travel by steam (No. 41) is 251. less. Cranes exactly similar to those exhibited have been mounted on gantries of sufficient height to allow of the free circulation of locomotives and rolling stock beneath them; many such may now be seen at work at Middlesborough Docks in England; at Callao Harbour in Peru; at the new Amsterdam Docks in Holland, and in other parts of the world. Information may be obtained of Mr. John t'Hoen, at the Office of the Royal British Commission, Exhibition Building, Philadelphia.

Aveling and Porter, Rochester, England; 72, Cannon Street, London; 43, Exchange Place, New York; 9, Avenue Montaigne, Paris.

AVELING AND PORTER'S ROYAL AGRICULTURAL SOCIETY'S FIRST PRIZE AGRICULTURAL LOCOMOTIVE ENGINE, FITTED WITH THEIR PATENT SIDE-PLATE BRACKETS.

These engines have been designed expressly for Steam Cultivation, Thrashing, Sawing, Pumping, and removing Agricultural produce. The boiler is unusually large, made of best quality plates, and tested up to 200 lbs. on the square inch; the fire-box is of Lowmoor iron.

It has a single steamjacketed cylinder mounted on the fore end of the boiler, to prevent priming and to economise fuel. The bearings of the crankshaft, counter-shaft, and driving-axle are carried by the side plates of the fire-box extended upwards and backwarks in one

piece for this purpose. This patented arrangement is shown in the illustration, and is an improvement in the construction of engines of very great value, as it saves the boiler from the strain otherwise put upon it by the working parts, and minimises the risk from strained bolt holes. The driving-wheels are of iron; the engine is steered from the foot-plate, and in short the general characteristics of the Agricultural Locomotives are the same as those belonging to Aveling and Porter's Road Locomotives.

Each engine is provided with flywheel, governors, and powerful brake; a complete set of wrenches, screwhammer, firing tools, oil can, spare gauge glasses, studs for driving-wheels, extra safety valve, and steam pressure gauge are also supplied, free of additional charge.

Two of these engines, fitted with cranes, have been employed by the Commissioners of the Philadelphia Exhibition in removing and lifting heavy material.

The engine to which the Royal Agricultural Society's First Prize was awarded was one of Aveling and Porter's 10-horse power Locomotives, fitted with a single slide and ordinary link motion, and it indicated 35-horse power, with a consumption of three and one-fifth pounds of coal per horse power per hour, nine other engines competing.

Not only was the First Prize for Road Locomotive Engines awarded to Aveling and Porter at the Royal Agricultural Society's Meeting, at Wolverhampton in 1871, but the Society's First Prize for the best waggon suitable for Traction Engines was also given to them, after a very complete series of competitive dynamometrical trials with waggons of all classes.

AVELING AND PORTER'S STEAM ROAD ROLLER, FITTED WITH THEIR PATENT SIDE-PLATE BRACKETS.

This machine is a spacial adaptation of Aveling and Porter's ordinary Road Locomotive to the purpose of road rolling, and in its design and construction every improvement suggested by long experience has been adopted.

The engine is carried upon four rollers of equal width, as shown in the engraving, the two hind ones acting as drivers, and the two in front as steering - rollers. These latter cover the space tween the two drivingrollers, and are made slightly conical in order that on the ground line they may run close together

be

while leaving room above their axle for the vertical shaft which connects them to the engine, and which serves to support the forward part of the boiler; at the same time play is given to the vertical shaft for the rollers to accommodate themselves to the curved surface of the road. The machine can be turned round in little more than its own length, thus enabling it to roll steep hills without injury to the fire-box, whil retaining the manifold practical advantages of the horizontal over the vertical boiler for locomotive purposes amongst which may be enumerated absence of priming, economy in fuel, wear and tear, and much lowe centre of gravity. It may be also noted as important features of these rollers that they are adapted for driving stone-breakers or other fixed machinery most economically when not required for rolling and for use traction engines. They are managed by one person.

With each Roller the following free extras are supplied: feed oil can, box spanner and set of spanners screw-hammer, two gauge glasses and washers, set of firing irons, and tube brush and rod.

Aveling and Porter introduced the Steam Road Roller in the year 1868 and have since then manufacture a great number of them. Among other places they are now working in London, Edinburgh, Liverpoo Manchester, Birmingham, Leeds, Sheffield, Bradford, Hull, Huddersfield, Newcastle-on-Tyne, Brighton Darlington, Middlesbro', Blackpool, Kidderminster, Walsall. New York, Philadelphia, Chicago, Washingte Newhaven, Auburn, Hartford, Newark, Richmond, Bridgeport, St. Louis, Pittsburgh, Wilmington, Rocheste Berlin. Vienna. Pesth. Milan. Christiania. Stockholm. India. Canada. South America. Australi West Indies.

The utility of road rolling is now generally appreciated, and when it is affirmed that a saving of 40 or per cent. in the cost of road repairs results from the employment of steam rollers, there seems little need f

prefacing the description of the rollers themselves with observations upon the economy of using them. The reason of the great saving is obvious; the road being made for the traffic and not by it, the expenditure of material is diminished; the stones, instead of being left loosely upon the surface to encounter the grinding lateral pressure of the wheels, are forced by direct vertical pressure into the bed prepared for them, along with a binding material that fills up the interstices and-affording support for the stones-keeps them in position with one surface only exposed to the abrading action of the wheels; the whole coating is consolidated, and there remains a surface hard and smooth enough to resist the disintegrating action of rain or frost.

Municipal authorities, contractors, and others can be furnished on application with a pamphlet containing full details of sizes, weights, and prices of the various rollers made by Aveling and Porter, together with official reports from the several towns working them.

Prizes:-Gold Medal at Beauvais (France), 1869; Silver Medal from the Royal Agricultural Society at Manchester, 1869 Gold Medal at Lille (France), 1870.

Barnard, Bishop, and Barnards, Norfolk Iron Works, Norwich, England.

Registered Slow Combustion Stoves, Fire Baskets with Andirons, patterns of Andirons, Sun Flowers in wrought iron and wrought brass, supplied to the British Staff Quarters. Garden Chairs, Lounges, and Tables of wrought and cast iron, in various designs, some of the lounges and chairs having canopies; Supplied for the gardens and grounds adjoining the Staff Quarters.

DESCRIPTION of an ORNAMENTAL PAVILION in Cast and Wrought Iron, designed by Thomas Jeckyll, Esq., 5, St. George's Terrace, Queen's Gate, London, manufactured by this firm, and exhibited by them in the main Building.

This Pavilion, which is intended for use upon a Lawn, or Ornamental Grounds, is 35 feet long by 18 feet wide, by 35 feet high to the extreme ridge. It is mounted upon a Dais of four steps. It has two Floors, the upper of which is reached by a Spiral Staircase. It is supported by 28 square columns placed 2 feet 6 inches spart.

The Ornament in the shafts of these columns is of a very rich and varied character. At a height of 7 feet 6 inches from the ground, a Transom Bar connects the columns. The lower Verandah is supported by castiron Brackets, firmly secured to the columns.

The outlines of these Brackets are in all cases alike, but the enrichment of their spandrils is varied by basreliefs, the subjects of which are studies from the "Apple Blossom, with flying Birds," "Whitethorn with Pheasants," "Scotch Fir with Jays," "Sunflower," "Chrysanthemum, Narcissus, Daisy and Grass, with a Crane and rising Lark," &c., &c. These brackets further support the Gutter and Cresting of the lower roof. The Cresting forms a wavy line which is surmounted at intervals by Fans richly carved, having for their -Lbjects studies from the Rose, Honeysuckle, Chrysanthemum, Hydrangia, &c. Between each Column, ath the Transom Bar is a richly-carved pendent ornament forming an arch. Above the Transom Bar, Ld between it and the Gutter, are richly-carved open-work key pattern Panels, in which are numerous medallions of various designs, being studies from Butterflies, Bees, Birds, Fish, with many quaint and ometrical patterns.

These are

The upper floor is surrounded by a wrought-iron Balcony Railing, 4 feet high, of a light and severe design, Libiting how much grace can be produced by mere straight lines when they are properly arranged. The upper roof is supported in its turn by 20 columns of a similar design to the lower ones. nected by a Transom Bar, above which is a rich open-work fish-scale Panel supporting the upper Gutter, - Cresting and Fans of a like character to the lower ones. The Brackets, however, upon these Columns of a different outline to the lower ones, and the spandrils are filled with many designs of a bolder character.