ments on guns, pistols, and other similar fire-arms, and which improvements are applicable to cannon and other large guns. Dated May 4, 1809. Specification to be enrolled within one month,

NUGENT BOOKER, of Lime-hill, in the county of Dublin; for a plan for improving and erecting limekilns, whereby a very considerable saving is made in fuel, and the lime most perfectly burnt in a short time, which he denominates Grellier and Booker's Lime-kiln. Dated May 9, 1809. Specification to be enrolled within two months.

BARTHOLOMEW FOLSCH, of Oxford-street, in the county of Middlesex, Merchant; for improvements on certain machines, instruments, or pens calculated to promote facility in writing. Dated May 9, 1809. Specification to be enrolled within two months.

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WILLIAM JOHNSON, of Blackheath, in the county of Kent, Gentleman; for a new or improved process for heating fluids, for the purposes of art and manufacture. Dated May 15, 1809. Specification to be enrolled within six months.

EDWARD MANLEY, of Uffculme, in the county of Devon, Clerk; for a plough upon an entire new construction. Dated May 30, 1809. Specification to be

enrolled within two months.

JOHN LINDSAY, (late Lieutenant-colonel of the 71st Regiment), of Grove-house, Edgeware, in the county of Middlesex; for a telegraph or apparatus for conveying intelligence by night or by day. Dated May 30, 1809. Specification to be enrolled within six months.

Specification of the Patent granted to THOMAS WELLS, of Erdington, in the County of Warwick, Cock-founder ;' for an improved Method of making and constructing Barrel Cocks and Water Cocks, whereby Leakage, and the sticking or setting fast of the Key or Plug are prevented, and the Cocks are less liable to be out of order, and more easy to be repaired. Dated June 8, 1809.

With Engravings,

To all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with, and agreeable to, the true intent and meaning of the said proviso in the said letters patent contained, I the said Thomas Wells do hereby declare that the nature of my said invention, and the manner in which the same is to be performed, is and are described and ascertained in manner following; that is to say: The merits of my invention in no wise depend on any particular metal of which the cocks may be made; but their essential property and VOL. XV-SECOND SERIES. superior

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superior excellence depend on the construction of that part of the cock which contains the key or plug, and is called the barrel, so that it cannot leak, and that no liquor can pass through it except when the key or plug is turned for that purpose. This is accomplished by making grooves in the inside of the barrel of about the eighth of an inch in depth, and filling up these grooves with leather, hat, or any thing else of a similar nature which will absorb the wet. The number or direction of

the grooves is not material.

The figure No. 1, (Plate VI.) drawn in the margin of these presents, represents a section of the barrel of a cock; and the letters aa aa represent the grooves in the inside as filled up.

The figure No. 2 represents a birds'-eye view of the barrel, where the letters a a a a shew the vertical grooves unfilled.

In witness whereof, &c.

Specification of the Patent granted to RICHARD ScantleBURY, of Redruth, in the County of Cornwall, Brazier ; for a Machine by which he counterbalances the Weight of any Column of Water, or other Fluids required to be lifted by any Steam or Water Engine, or other Machinery, either worked by Animals or Men.

Dated March 1, 1809.

With Engravings.

To all to whom these presents shall come, &e. NOW KNOW YE, that in compliance with the said proviso, I the said Richard Scantlebury do hereby declare that my said invention is described by the drawing in the

margin hereof, and in the manner following; that is to say My invention is founded on the principle of the inclined plane; that is, I make an inclined plane of wood, cast iron, or wrought iron, or of any other fit materials, and of a convenient length, breadth, and thickness to the centre of which I fix pinions, that it may turn alternately, or incline at each end as many degrees below its horizontal or centre level as the nature of the machine may require. On this plane I place a traveller or car, so called by me, which is about half the whole length of the plane, with a weight or weights fixed on one or both its ends; which weight or weights when moved, rolled, or carried by wheel-work from the centre of the plane towards either end, will cause the plane to sink or be depressed to a certain degree of inclination below its centre level, and so vice versá.

Fig. 3 (Plate VI.) is a side-view of the plane and car. A, the plane. B, the car. W W, the weights of the car. F, a toothed wheel, in which the rack works.

Fig. 4 is a bird's-eye view of the plane and of the axle of the wheel-work, by which the car is moved, rolled, or carried along the inclined plane. A, the plane. D, an axle, with toothed wheel at each end. The wheel E is placed within the opening of the plane. F, a wheel at the opposite end. G, a rack, which works in the teeth of the wheel F; the rack is separated over the wheel F to shew it; the rack may be drawn at each end; OO, pinions of the plane. When the rack G is drawn backward or pushed forward over the wheel F it causes the wheel E to carry along with it the car, first towards H then towards A, and so vice versa, by means of a rack fastened to the under-part of the car, which falls

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falls into the teeth of the wheel E, or in the room of the wheel F and rack G. A crank or lever, or any other mechanical power, may be placed so as to move the axle D backward and forward, and drive the car B to and from the centre of the plane A. I move the rack G by hand, or by connecting it with cranks of waterwheels, mill-wheels, &c. &c. or I attach it to the piston rod or bob, or beams of steam-engines, or to any kind of rotary or reciprocative motion whatever. I also ap ply a fly-wheel, to regulate the motion of the planę, car, &c. &c.

In witness whereof, &c.

Specification of the Patent granted to WILLIAM PROCTOR, of Sheffield, in the County of York, Optician; for improved Methods of raising or supplying Tubes or Lamps with Oil, so as to remove away the Shade of the Vessel containing the Oil, and in Form and Use equal to any Mould or Wax Candle, which he denominates Proctor's Spiral, Argand, and Candle Lamp,

Dated March 9, 1809.

To all to whom these presents shall come, &c. NOW KNOW YE, that in compliance with the said proviso, Į the said William Proctor do hereby declare that my said invention is described in manner following that is to say, I take a tube of brass, plated metal, or silver, or any other metal tube, drawn or bored; which tube shall be so true as to admit a plug or piston of leather, cork, or any other elastic or tight-fitting substance, to

contain