List of Patents for ^eut Inventions. 393 



To Jolm Isaac Hawkins, of Titchfiekl Street, machinist, 

 for a certain instrument, machine, or manufacture, appli- 

 cable in mechanics as a balance or equipoise. — Nov. 2. 



To John Barton, of Argylc Street, Westminster, gent., 

 for his improved lamp of a new construction, actino; upcm 

 the natural unerring principle of the difference of e,"ravity 

 between two fluids, which produces a constant supply of 

 oil or other combustible fluid to feed the wick or burner 

 thereof fountain in a perpendicular direction, from a reser- 

 voir beneath the flame, liaving the quality of burning «r 

 consuming the whole of the oil or oilier combustible iiuid 

 applied thereto. — Nov. 2. 



To David Meade Randolph, a citizen of Viroinia, in the 

 United Slates of America,- but now residins; in Warwick 

 Court, Holborn, merchant, for certain improvements in 

 the construction of wheeled carriages of every descriptiou. 

 —Nov. 6. 



To Edward GrifTith, of Birmingham, opticiaji, for his 

 new invented air-tight agitai)le lamji. — Nov. 9. 



To James Hall, of Ncwbold Astburv, in the county of 

 Chester, bookbinder, for a method of making and manu- 

 facturing shives, or shivers, and pulley wh.cols of every de- 

 scription, and various other articles, from certain matciials 

 or composition of earths and minerals, v\hieh render the 

 said articles more durable than such as are made iu wood or 

 metal. — Nov. M. 



To Robert Wass, of Sheffield, cutler, for certain im- 

 provements in the construction of hafts or iiandies for 

 razors. — Nov. 21. 



To John Cragg, of Liverpool, esq., for certain improve- 

 ments in tlie casting of iron roofs tor houses, warehouses, 

 and other buildings, and in covering them with slatt-. — 

 Nov. 21. 



To John Tovvill KufT, of Basin^hall Street, London, 

 John Tnlton, of St. Andrew's Hill, and John Webb, of 

 Clapton, in the county of Middlesex, for their various im- 

 provements iu the construction of machines for making 

 cards for carding wool, cotton, flax, silk, and all iJubsiancts 

 capable of being carded. — Nov. 21. 



MJiTliOllO- 



