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a method of rolling moulds or plates of trowels from pieces of either blister, sheer, or cast-steel, of a square or nearly square, or oblong form. Dated May 10, 1808. Specification to be enrolled within one month.

JOHN WATSON, late of Bury-place, Bloomsbury, in the county of Middlesex, Gent, but now a prisoner in the King's-bench Prison; for certain improvements in the art of soap-making, by which the article is in several respects ameliorated. Dated May 10, 1808. Specification to be enrolled within one month.

CHESTER GOULD, of the parish of St. Luke, Oldstreet, in the county of Middlesex, Gent. for certain improvements in the construction of a machine for washing or cleansing linen and various other articles. Dated May 17, 1808. Specification to be enrolled within four months.

WILLIAM CONGREVE, of Garden-court, Temple, in the county of Middlesex, Esquire; for a gun-carriage of the simplest construction, either for land or sea service, calculated to reduce very considerably the labour of working the guns, to produce a smooth and even recoil, and to prevent the violent action that takes place in common carriages when the gun is fired; at the same time the carriage is of much lighter, less expensive construction, and less liable to be struck and splintered by the enemy's shot, as presenting much less surface; when applied to the sea-service, it allows, moreover, of a very considerable reduction in the size of the port. Dated May 24, 1808. Specification to be eurolled within one month.

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JOHN STEDMAN, of Horton Kirby, in the county of Kent, Farmer; for a patten and clog of infinite utility and ease to such persons who may wear them. Dated May 24, 1808. Specification to be enrolled within one month.

WILLIAM HENRY POTTER, of No. 5, Pemberton-row, Gough-square, in the City of London, Flute-maker; for certain new improvements in German flutes and other wind musical instruments. Dated May 28, 1808. Specification to be enrolled within one month.

JOSEPH WILLMORE, of Birmingham, in the county of Warwick, Silversmith; and JOHN TONKS, of the same place, Plater; for a new method and processes in the manufacturing of nails. Dated May 28, 1808. Specification to be enrolled within one month.

ROBERT RANSOME, of Ipswich, in the county of Suffolk, Iron-founder; for his improvements on the wheel and swing plough. Dated May 30, 1808. Specifica tion to be enrolled within one month.

DAVID THOMAS, of Featherstone-buildings, in the county of Middlesex, Gentleman; for a perforated vessel, percolater and frame, for making or preparing pottable coffee. Dated May 30, 1808. Specification to be enrolled within one month.

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Specification of the Patent granted to THOMAS JEFFERSON, of the Parish of Saint Saviour, Southwark, in the County of Surrey, Tanner and Leather-dresser, JOSEPH ELLIS, of the same Place and Trade, and ALEXANDER GALLOWAY, of the Parish of Saint Andrew, Holborn, in the County of Middlesex, Machinist and Engineer; for a Machine or Machines for the Purpose of finishing, glazing, and glossing, of Leather.

Dated March 7, 1808.

With a Plate.

To all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with the said proviso, I the said Alexander Galloway do hereby declare, that our said invention is particularly described and ascertained in and by the drawings thereof hereunto annexed. In witness whereof, &c.

Independent of the combination of the several parts of our machine, as represented in the perspective view of it, as given in Fig. 1, (Plate VI.) the peculiar principles VOL. XIII.-SECOND SERIES, U

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and properties of our invention consist, first, in placing any convenient number of glazing or graining cylindrical rollers, (or of any other convenient form for a glazer or grainer) at the extreme diameter of the wheels, or circular plates to which they are connected, with the ability of extending or contracting the distance of the extreme of each roller or glazer from the center of the wheels or plates to which they are joined, by any suitable machinery capable of promoting an accurate adjustment of the rollers or glazers, over the whole extent of their length; which properties insure the same correctness of adjustment to any number of rollers or glazers, by which they are rendered capable of traversing in one and the same circle, bearing in all their parts upon any curve of the same radius which they describe. A body of rollers or glazers so placed upon a revolving spindle, axle, or shaft, act as so many burnishers, glazers or grainers, on any docile surface with which they come in contact; the degree of gloss which their friction will necessarily create will depend entirely on the velocity, pressure, and the quality of the material on which they may at any time operate.

Secondly: In the construction of the table which receives or supports the leather while the glazing rollers, burnishers or grainers act on it, at all times it must be carefully observed that the extreme of the glazing rollers, while connected to the revolving shaft, describe a circle suitable to the curve of the table, and that most accurately. When the rollers or glazers are thus adjusted to the table, it is brought up to any required degree of contact with them, having the leather to be glazed placed between them and the table; the leather being therein subject to any degree of discretionary pressure

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which the operator may determine on. The table coming up or approaching in a discretionary manner, the revolving shaft not only enables the leather to be passed across, but down the table in any required direction, while the roller-shaft is moving at any rate of velocity; the quantity of any skin of leather to be glazed at a revolution of the roller-shaft will depend on the length of the glazing roller, the length of the skin lying on the table, and the speed with which it is moved across the table to feed the operation of the glazing rollers. The discretionary approach of the table to the roller-shaft secures also the whole surface of any skin of leather being perfectly glazed or grained (whichever may be required) notwithstanding any inequality in its substance, as the table accommodates such inequalities by advancing to, and retreating from, the revolving shaft as often as the inequalities in the substance of the leather may occur. Under all circumstances of inequality in the thickness of the leather, it is still, however, by the discretionary power of the table, at all times capable of creating an uniformity of pressure, if requisite, which contributes largely to produce an uniformity of gloss over the whole surface of any skin of leather, notwithstanding the inequalities of substance and the impediments of holes which many skins of leather possess.

Thirdly: In adopting a discretionary means which shall determine the exact degree of contact to which the table shall approach the roller-shaft, the apparatus for securing this object we denominate the Table Guide or Stop. By the application of this apparatus the ta ble is prevented from running in upon the rollers when the force to bring the table up to them is applied, besides protecting the leather to be glazed from being

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