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4. Some improvements in the steam cylinder clearer, consisting chiefly of a number of narrow brushes, instead of one.

5. An improved method of grinding the wire of card-cylinders, flats, &c. ; that is, of keeping the wires constantly sharp and fine.

6. An improved mode of feeding the carding-engine, with the laps supplied by the improved blower and lap-frame (No. 1); the object of which is to correct the inequality ordinarily arising from the irregular spreading of the cotton at the lap-machine, by reducing the width of the cotton as spread.

7. An improved twist coil frame, the main feature of novelty in which is a change in the direction of the roving, which in the machine described forms the coil from below.

8. An improvement in the capping motion of the spinning-frame.

9. A new mode of banding or driving the spindles.

10. An improved flyer made of buffalo hide, softened in water, and bent in a mould.

And 11. Another flyer, made of two pieces of whalebone with wire bent round them, which wire again has thread wound round it, for the double purpose of securing the whalebone between the wires, and protecting the wires from rubbing against the iron or steel guide-plate.

Joux LAMB, OF KIDDERMINSTER, MACHINIST, for "certain improvements in engines to be worked by steam, air, gas, or vapours; which improvements are also applicable to pumps for raising or forcing water, air, and other fluids.Patent dated April 15, 1842.

The improvements which are the subject of this patent relate exclusively to the class of rotary engines, and are stated to " consist in one cylinder working inside another in a peculiar manner.” The “manner" is ingenious, as well as peculiar,” but could not be explained satisfactorily without the aid of some of the eighteen drawings with which it has been found necessary to accompany the specification. Some general idea of the inventor's mode of action may be gathered from his claim, which is for “firstly, the application of an eccentric cylinder or cylinders, in combination witn a stationary stop or stops ; such cylinders being capable of turning on. their own axes, and performing the motions required of them ;” and secondly, for “a like arrangement of apparatus for the purpose of raising or forcing water, air, or other fluids."

of artificial suel, which improvements are applicable to the preparation of asphalt, and for other purposes. September 29 ; six months.

Samuel Henson, of New City Chambers, Bishopsgate-street, engineer, for certain improvements in locomotive apparatus, and in machinery for conveying letters, goods, and passengers, from place to place through the air, part of which inprovements are applicable to locomotive, and other machinery to be used on water or on land. September 29; six months.

William Smith, of Grosvenor-street, Camberwell, gentleman, for improvements in treating certain animal matters, to obtain products applicable to the manufacture of candles, and other purposes. September 29; six months.

John Rand, of Howland-street, Fitzroy-square, artist, for improvements in making and closing metallic collapsable vessels. September 29; six months.

James Hyde, of Duckenfield, Cheshire, machine. maker, and John Ilyde of the same place, cottonspinner, and manufacturer, for a certain improvement or improvements in the machinery used for preparing cotton, wool, silk, ilax, and similar fibrous materials for spinning. September 29; six months.

John Ridsdale, of Leeds, for improvements in preparing fibrous materials for weaving, and in sizing warps. September 29; six months.

John Fry Wilkey, of Mount Vernon, Exeter, commission agent, for improvements in carriages. September 29; six months.

John George Shipley, of Bruton-street, Berkeleyśquare, saddler, for certain improvements in saddies. October 6; six months.

John Oliver York, of Upper Coleshill-street, Eaton-square, for improvements in the manufacture of axles for railway wheels. October 8; six months.

Wilton George Turner, of Gateshead, Durham, doctor in philosophy, for improvements in the manufacture of alum. October 8; six months.

Claude Edward Deutsche, of Fricour's Hotel, St. Martin's-lane, gentleman, for improvements in combining materials to be used for cementing purposes, and for preventing the passage of fluids, and also for forming or constructing articles from such rompositions of materials. October 8; six months.

Samuel Dotchin, of Myrtle-street, Hoxton, jeweller, for improvements in paving, or covering, and constructing roads, ways, and other surfaces. (Being a communication from his son lately deceased.) October 13; six months.

William Edward Newton, of Chancery-lane, patent agent, for certain improvements in the manufacture of artificial fuel. (Being a communication) October 13; six months.

Charles Thomas Holcombe, of Valentines, near Ilford, Essex, Esq., for an improved mode of using certain materials as fuel; also an apparatus or method for collecting the smoke or soot arising from the combustion of such fuel; which apparatus or method is applicable to collecting the smoke or soot arising from the ordinary combustion of fuel, and also the application of the products arising from the combustion of the first mentioned materials, as a manure, and for other useful purposes. — Six months ; October 13,

Robert William Sievier, of Henrietta-street, Ca. vendish-square, gentleman, for certain improvements in looms for Wraving, and in the mode or method of producing plain or figured goods or sabrics.-Six months; October 13.

Peter Kagenbusch, of Lyth, in the county of York, dyer, for certain improvements the treatment of the alum rock, or schist, and in the manufacture and application of the products derived therefrom. -Six months; October 13.

Henry Brown, of Selkirk, manufacturer, and Thomas Walker, of the same place, manufacturer, for improvements on woollen carding engines. Six months; October 13.

Thomas Seville, of Royton, Lancaster, cotton

LIST OF ENGLISH PATENTS GRANTED BE

TWEEN THE 29TH OF SEPTEMBER, 1842, AND THE 27TH OF OCTOBER, 1842. Edward Bell, of the College of Civil Engineers, Putney, professor of practical mechanics, for miprovements in applying heat in the manufacture

Henry Brown, of Selkirk, manufacturer, and Thomas Walker, of the same place, manufacturer, for improvements on woollen carding engines. October 20.

Alphonse de Toirsbrioux, of Great Russel-street, Blooinsbury, Middlesex, gentleman, for improvements in lithographic and other printing presses. October 20.

spinner, for certain improvements in machinery used in the preparing and spinning of cotton, flax, and other fibrous substances. Six months; October 20.

James Palmer Budd, of Ystalyfera Iron Works, Swansea, merchant, for improvements in the manufacture of iron. Six months; October 20.

William Longmaid, of Plymouth, accountant, for improvements in treating ores and other minerals, and in obtaining various products therefrom, certain parts of which improvements are applicable to the manufacture of alkali. Six months; October 20.

James Statham, of West-street, St. Giles's, Venetian lock maker, for improvements in the construction of locks, for Venetian blinds used in carriages. Six months; October 20.

Gilbert Claude Alzard, of Tichborne-street, gent., for certain improvements in bread, biscuits, macaroni, vermicelli, and pastry, and the mode of making the same. Six months; October 20.

George Hazeldine, of Lant-street, Southwark, coach manufacturer, for certain improvements in omnibuses. Six months; October 27.

James Gardner, of Banbury, ironmonger, for improvements in cutting hay, straw, and other vegetable matters for the food of animals. Six months; October 27.

John Mullins, of Battersea, surgeon, for improvements in making oxides of metals in separating silver and other metals from their compounds, with other metals, and in making white lead, sugar of lead, and other salts of lead, and salts of other metals. Six months; October 27.

Rowland Williams, of Manchester, fustian shearer, for certain improvements in machinery, or apparatus for raising, shearing, and finishing velvets, or other piled goods by power. Six months; October 27.

LIST OF PATENTS GRANTED FOR SCOTLAND

FROM 22ND OF SEPTEMBER TO 22ND OF OCTOBER, 1842. Charles William Firchild, of Wesley Park, Norfield, Worcester, farmer, for an improved propelling apparatus for marine and other purposes. Sealed September 26, 1812.

Edwin Ward Trent, of Old Ford, Bow, Middlesex, rope maker, for an improved mode of preparing oakum and other tibrous substances, for caulking ships and other vessels. September 29.

Peter Hagenbusch, of Weiter, on Rhur, in Westphalia, in the kingdom of Prussia, dyer, and now residing in the parish of Lyth, in the county of York, in England, for certain improvements in the treatment of the alumn rock, or schist, and in the manufacture and application of the products derived therefrom. September 29.

Henry Bewley, of Dublin, in the county of the city of Dublin, licentiate apothecary and chemist, for an improved chalybeate water. October 4.

Alfred Jeffrey, of Lloyd's-street, Pentonville, Middlesex, gentleman, for a new method of preparing masts, spars, and other wood for ship building and other purposes. October 18.

Claude Edward Deutsche, of Fricours Hotel, St. Martin's Lane, Middlesex, gentleman, for improvements in combining materials tote used for cementing purposes, and for the preventing the passage of fluids, and also for forming articles from such composition of materials. (Being a communication.) October 18.

John Ridsdale, of Leeds, York, for improvements in preparing fibrous materials for weaving, and in sizing warps.

October 20. Samuel Carson, of York-street, Covent Garden, Middlesex, gentleman, for improvements in purifying and preserving animal substances. Oct. 20.

The Manufacture of Watches.-A select committee of the House of Commons sat upon this subject in the year 1818, and it appears from the report that in 1796 the number of gold and silver watch cases marked in Goldsmiths-hall amounted to 191,678; while in the year 1816 the gradual reduction had brought that number down to 102,112, exhibiting a diminution of 89,566, or nearly one-half; and it further appears from the last edition of M'Culloch's Dictionary of Commerce, that that number was reduced in 1841 to less than 100,000. In one township alone, in Lancashire, called Prescott, in which the manufacture of the movements of watches was the staple, there were in 1821, 869 families employed in handicrafts, whilst in 1831, from the manufacture of watches being utterly destroyed, that number was reduced to only 540. That which this country has lost, Switzerland has chiefly gained; and it is proved that England is, in this respect, tributary to the Continent -- that every year the quantity of foreign watches sold in London and in the principal towns of the three kingdoms, is more than ten-fold the amount of those manufactured in England. This great injury to our manufactures and loss to our trade is likely speedily to have an end; a gentleman, who has devoted 20 years of his life to this subject, having made a variety of machines by which an incredible number of watches, of every variety of size, may be made in a day. By one of the machines 300 perfect plates can be produced in a day, by another the same quantity of barrels; by tive machines the requisite number of centre, third, and fourth wheels (crossed, polished, and cut) with balances for 300 movements. By another 200 pinions can be cut and rounded: by another the holes are drilled, the tapping, the screwholes, the various parts in the plate are sunk, planting the depths and escapement, &c., and all with such exaciness as cannot be excelled; another for the making and polishing of pivots, &c. Four oiher machines will be sufficient for making pivots for 30 movements a-day: and to add to these, there are 20 other machines for every description of work connecied with the watch-making, and which allo gether constitute a set. The inventor has submitted these machines to the scrutinising inspection of the most experienced makers of chronometers and watches in London, and not one has expressed a doubt of the work so produced being incomparably superior to that done in the usual way. Among other distinguished names in the trade we have observed those of Mr. Barwise, Mr. Earnshaw, Mr. Hewett, Mr. Vieyres, Messrs. Frodsham and Co. with about a hundred watchmakers in the country, who, with the Duke of Hamilton and Mr. Howell (of the firm of Howell and James) at their head, are engaged in carrying out the great and national object of restoring this lost and important manufac. ture to England by means that while they greatly lessen the price, will improve the quality, and entirely undersell our foreign rivals, and be very largely profitable to all parties concerned. Standard

KINTENDING PATENTEES may be supplied gratis with Instructions, by application (postpaid) to Messrs. J. C. Robertson and Co., 166, Fleet-street, by whom is kept the only COMPLETE REGISTRY OF PATENTS EXTANT from 1617 to the present time).

LONDON: Edited, Printed, and Published by J. C. Robertson, at the Mechanics' Magazine Office,

No. 166, Fleet-street.—Sold by W. and A. Galignani, Rue Vivienne, Paris;

Machin and Co., Dublin ; and W. C. Campbell and Co., Hamburgh.

MUSEUM, REGISTER, JOURNAL, AND GAZETTE.

No. 1004.]

SATURDAY, NOVEMBER 5, 1842.
Edited, Printed and Published by J. C. Robertson, No 166, Fleet-street.

[Price 3d.

MESSRS. WHITELAW AND STIRRAT'S HYDRAULIC ROTARY ENGINES

LATEST IMPROVEMENTS.

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MESSRS. WHITELAW AND STIRRAT'S HYDRAULIC ROTARY ENGINES

LATEST IMPROVEMENTS. We described about two years ago

of k k in contact with the bottom of the (see Mech. Mag. No. 903,) the hydrau- ring i i. It will be clear, that if the ring lic rotary engine originally patented by i i and the part k k be accurately turned Mr. James Whitelaw, of Glasgow, and and ground upon each other at the place which has since obtained so much cele. where they meet, the rope yarn in the brity in the mechanical world ; and we space

betwixt the flanch outside of k k, have now to lay before our readers a de and the top of the main pipe will press scription of some important improve the part k k in contact with the ring ii, ments which have been since invented and and in this way keep the joining of these patented by the same gentleman in con parts water-tight; 11 il are ribs or junction with Mr. James Stirrat of stays, which support the arms. Paisley.

The mode of fixing the arms of the Figs. 1 and 2 of the accompanying machine is thus described :engravings represent an elevation and plan of the original engine in its present

Let 1, 4, 9, (fig. 3) be a circle of the most improved state. The engine, it

same diameter as that described by the cenwill be recollected, is worked by the pres

tre of the jet pipes, and let this circle be sure and reaction of a column of water.

divided into, say twelve equal parts, in the The main pipe a a, conducts the water

points 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, which drives the machine into its arms from

and let the radius 1 w be also divided into a reservoir or head on a higher level than

twelve equal parts in the points a cegil the arms; b b b b are the arms which are

moq s and u. From each division on the

circle draw a straight line to the centre u, hollow; the water passes into them at

and from the division at a, on the radius, the centre part c, and escapes out at the

draw from the centre w a portion of a circle jet pipes d d. The motion of the arms till it cuts the radius 2 w in the point b. is communicated to e e, the main, or From the same centre w draw a portion of a driving shaft of the machine, and by circle through the second point c, till it cuts means of a wheel, pinion or pully, fixed on the radius 3 w in the point d. In this way the shaft e e, its rotary motion may be

continue to draw concentric arcs from the communicated to any machinery which

divisions on the radius 1 w, making each the water mill may be intended to work;

concentric arc to terminate in that radius f f f f is a large bracket, which is immediately following the radius in which fixed to the wall, or building, g g; this

the arc formerly drawn was made to termibracket supports the shaft e e. The tail

nate. The points of intersection 1 b, d, f, l, race is marked h h. As the arms have a

j, l, n, p, r, t, u, and w, thus obtained, will rotary motion, and the pipe a a is fixed

be points in the middle of the breadth of the to the building under it, there must be

arm, and a curved line traced through these

points will be the curve of the middle of the means provided to prevent the escape of breadth of the arm.

After the curved line water at the place where the main pipe

1 d, l, r, w, is formed, any number of points meets the arms. A contrivance suitable

in the curve lines, which form the sides of for this purpose is shown in fig. 1. It the arm, will be obtained in the following consists of a ring i i, round the under way. With w as a centre draw such a numside of c, the central opening or aperture

ber of concentric circular arcs passing through leading into the arms, and of a part k k, the curve line 1 d, l, r, w, as may give a turned cylindrical at the place where it sufficient number of the required points

. fits into the bored part on the top of the

Then, with a pair of compasses take a distpipe a a. The part k k has a groove

ance equal to four times the width of the turned round its outside, near to its bot

outer end of the jet pipe, and set off that tom end. The groove is to be wrapped

distance upon each such concentric arc, twice full of soft twine, in order to prevent the

measuring, once upon each side of the curre 1 d, l, r, w, from

the point of intersectica escape of water betwixt the pipe and the

of the arc and that curve.

The p cylindrical part of k k. There is a marked off on one side of the curve line Aanch outside of the part k k, and rope

id, l, r, w, are points in one side of the yarn is wrapped round in the space be

arm, and the points similarly marked off on twixt this flanch and the top of the main the other side of that curve are points in the pipe, for the purpose of keeping the top curve which form the other side of the arm;

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on the other side of that curve, a distance equal to four times the width of the jet pipe, and in the same way the breadth of the arm at any other point will be found. If the arm be

drawn in the manner now described, its depth, as also that of its jet piece, will be uniform throughout. In fig. 1, the depth of the arms and) jet

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