1820.] New Patents. 75 



the true Value of the unknown Quantity is found without previous Reduction. 

 With a Supplement containing two other Methods of solving Equations, de- 

 rived from the same Principle. By Theophilus Holdred. 4io. 7*. 



Article VIII. 

 NEW PATENTS. 



Major Rohde, of Leman-street, Goodman's-fields, Sugar Refiner, for a 

 method of separating or extracting the molasses, or syrup, from muscovado or 

 other sugar. 



George Lilley, of Brigg, Lincolnshire, and James Bristow Fraser, of Black- 

 burn House, Linlithgow, for improvements in the application of machinery for 

 propelling boats or other vessels floating in or upon water, and for attaining 

 other useful purposes, by means of an hydropneumatic apparatus, acted upoa 

 by a steam-engine, or other adequate power. 



Thomas Hancock, of Little Pulteney-street, Golden-square, Coach Maker, 

 for the application of a certain material to various articles of dress, and other 

 articles, by which the same may be rendered more elastic. 



Thomas Cook, of Brighton, for an improved apparatus for the purpose of 

 cooking, called by him "A Philosophical Cookery." 



John Hague, of Great Pearl-street, Spitalfields, Engineer, for certain im- 

 provements in the method of heating hot-houses, manufactories, and other 

 buildings, and of boiling liquids. 



John Ambrose Tickell, of West Bromwich, Staflfordshire, for a cement to 

 be used in aquatic and other buildings, and stucco-work : it is produced by the 

 use ani application of a mineral substance, not before employed in the manu- 

 facture thereof. 



Josiah Parkes, of Warwick, Worsted Manufacturer, for a new and improved 

 method of lessening the consumption of fuel in steam-engines, and furnaces in 

 general, and for consuming smoke. 



James Jacks, of Camberwell, and Arthur Aikin, of the Adelphi, for a new 

 and improved method or methods of preventing mildew in sail-cloth and other 

 canvas, and in other manufactures, made of vegetable fibre. 



James Scott, of Grafton-street, Dublin, Watchmaker, for a new method of 

 combining, adjusting, and applying, by machinery, certain of the well-known 

 mechanic powers and modification thereof, where power and velocity are 

 required. 



John Malam, ofRomney Terrace, Westminster, for improvements on gaso- 

 meters. 



Samuel Kenrick, of West Bromwick, Staffordshire, for an improved method 

 of tinning cast-iron vessels of capacity. 



Robert Wornum, of Wigmore-street, London, for an improvement on 

 piano-fortes, and certain other stringed instruments. 



Robert Bill, of Newman-street, for an improved mode of constructing beams, 

 masts, yards, bowsprits, and other parts of ships, &c. used for navigation, and 

 of other parts of their rigging. 



John Barton, of Falcon-square, for improvements in propelling, and in the 

 construction of engines and boilers applicable to propelling. 



Richard Watts, of Crown-court, Heet-street, for improvements in inking 

 printitig types with rollers, and in placing and conveying paper on types, and 

 in inking with a cylinder. 



Robert Winch, of Shoe-lane, for improvements in machines or presses, 

 chiefly applicable to printing. 



Edward Massey, of Eccleston, Lancashire, for improvements in the construc- 

 tion of chronometers and pocket watches. 



