are applicable to raising and lowering weights.-Sealed 8th February-6 months for inrolment.

James Johnston, of Willow Park, Greenock, Esq., for improvements in obtaining pictures or representations of objects.-Sealed 15th February-6 months for inrolment.

William Henry Fox Talbot, of Locock Abbey, Wilts, Esq., for improvements in obtaining pictures, or representations of objects.-Sealed 8th February-6 months for inrolment.

William Edward Newton, of the Office for Patents, 66, Chancery-lane, in the county of Middlesex, mechanical draftsman, for improvements in obtaining a concentrated extract of hops, which the inventor denominates “ Humuline,”—being a communication.-Sealed 15th February— 6 months for inrolment.

66

Theophilus Smith, of Attleborough, Norfolk, farmer, for certain improvements in ploughs.-Sealed 15th February— 6 months for inrolment.

James Whitelaw and George Whitelaw, engineers, of Glasgow, for a new mode of propelling vessels through the water, with certain improvements on the steam-engine, when used in connection therewith; part of which improvements are applicable to other purposes.-Sealed 15th February-6 months for inrolment.

Philip W. Phillips, of Clarence-place, Bristol, Gent., and W. Bishop Peck, of Broad-street, Bristol, wine merchant, for improvements in four-wheeled carriages.-Sealed 15th February-6 months for inrolment.

James Ransom and Charles May, of Ipswich, machine makers, for improvements in the manufacture of railway chairs, railway and other pins or bolts, and in wood fasten

ings and trenails.-Sealed 15th February-6 months for inrolment.

William Scamp, of Charlton-terrace, Woolwich, surveyor, for an application of machinery to steam vessels for the removal of sand, mud, soil, and other matters from the sea, rivers, docks, harbours, and other bodies of water.-Sealed 16th February-6 months for inrolment.

William Samuel Henson, of Allen-street, Lambeth, engineer, for certain improvements in steam-engines.-Sealed 16th February-6 months for inrolment.

George Edward Noone, of Hampstead, engineer, for improvements in dry gas meters.-Sealed 18th February-6

months for inrolment.

William Orme, of Stourbridge, iron-master, for improvements in the manufacture of cofered spades, and other cofered tools.-Sealed 18th February-6 months for inrolment.

John Collard Drake, of Elm-tree road, St. John's Wood, land surveyor, for improvements in scales used in drawing and laying down plans-Sealed 18th February-6 months for inrolment.

Anthony Bernhard Von Kathen, of Kingston upon Hull, engineer, for certain improvements in fire-grates, and in parts connected therewith, for furnaces for heating fluids.-Sealed 22nd February-4 months for inrolment.

William Newton, of the Office for Patents, 66, Chancerylane, in the county of Middlesex, civil engineer, for improvements in the process of, and apparatus for, purifying and disinfecting greasy and oily substances or other matters, both animal and vegetable,-being a communication.-Sealed 22nd February-6 months for inrolment.

Thomas William Booker, of Melin Griffiths Works, near Cardiff, iron-master, for improvements in the manufacture of iron.-Sealed 22nd February-6 months for inrolment.

Jonathan Guy Dashwood, of Ryde, Isle of Wight, plumber, for improvements in pumps.-Sealed 22nd February-6 months for inrolment.

Moses Poole, of Lincoln's-inn, in the county of Middlesex, Gent., for improvements in tanning, dressing, or currying skins,-being a communication.-Sealed 22nd February-6 months for inrolment.

John Dean, of Dover, chemist, for improvements in preparing skins and other animal substances, for obtaining gelatine, size, and glue; and in preparing skins for tanning. -Sealed 23rd February-6 months for inrolment.

Charles Sneath, of Nottingham, lace manufacturer, for certain improvements in machinery for the making or manufacturing of stockings or other kinds of loop work.Sealed 23rd February-6 months for inrolment.

THE

London

JOURNAL AND REPERTORY

ОР

Arts, Sciences, and Manufactures.

CONJOINED SERIES.

No. CXI.

Recent Patents.

To ALEXANDER HETT, of Gower-street, Bedford-square, in the parish of St. Giles in the Fields, and county of Middlesex, surgeon, for certain improvements in the arrangement and construction of fire-grates, or fireplaces, applicable to various purposes.—[Sealed 23rd January, 1840.]

THIS invention of improvements in the arrangement and construction of fire-grates, or fire-places, consists in a peculiar disposition of the several parts of the fire-place, in order to economise fuel and heat, and raise and maintain the temperature of a room or chamber, at a considerable height or degree of warmth, without employing a very large fire. This object is effected by warming a stratum of air with the heat that would otherwise escape up the chimney without being used,—the air being afterwards, in a warm state, allowed to pass into the room or chamber.

VOL. XVIII.

I