1813.] New Patents. Tf 



mathematics, and trigonometry, heights and distances, and 

 altogether embracing every science depending upon angles. 

 Dated May 5, 1813. 



Charles Buoderip, London ; for improvements in vessels 

 to be used for heating fluids and other substances. Dated May 

 5, 1813. 



John Erat, harp-maker, London ; for improvements in the 

 construction of a pedal harp. Dated May 8, 1813. 



Thomas Daking, Essex, tanner; for a method of heating 

 liquors for the manufacture of leather, and other manufactures. 

 Dated May 8, 1813. 



John Fisher, Millend, Buckingham, and Layton Cooke, 

 London, land agent ; for improved gaiters, and modes of fas- 

 tening the same. Dated May 11, 1813. 



William Bullock, London, locksmith and founder, and 

 James Boaz, Glasgow, engineer ; for certain improved ma- 

 chines, instruments, or contrivances, applicable to doors and 

 window- shutters, for preventing them from being broken open, 

 and such doors from being violently forced in by the wind or 

 otherwise, part of which may be applied to other useful purposes. 

 Dated May 15, 1813. 



Edward Cowper, of St. Mary, Newington Butts, Surrey, 

 ironmonger; for certain improvements in the machines com- 

 monly used for cutting the edges of paper and books. Dated 

 May 20, 1813. 



William Jenkins, of Birmingham, brass founder; for an 

 improvement in the method of manufacturing socket castors, 

 used with, or affixed to, cabinet and other furniture and things. 

 Dated May 22, 1813. 



John Thack ray, London, cabinet-maker; for a method of 

 enclosing a seat in a portable stool-stick, which seat may be 

 applied to other useful purposes. Dated May 22, 1813. 



Thomas Willcox, Bristol, mason ; for a machine for curing 

 smoky chimneys, consisting of a hollow cap, with a funnel 

 and contrivance for voiding the smoke, to be fixed on the top of 

 n chimney-stack with two or more courses of brick- work, and 

 having for its object to prevent the smoke arising from the fire in 

 the grate being driven back into the room, as well by excluding 

 all winds from the orifice of the chimney, as by promoting the 

 (haft of the chimney, by means of a continued accumulation of 

 rarified air in the cavity of the cap. Dated May 22, 1813. 



William Buunton, Butterley Iron Works, Derby, engi- 

 Deer; for tin- construction and erection of engines, and other 

 me< hanical operations. Dated May 22, 1813. 



\\ii.i\m Stocekh, gunsmith, of Martock, Somerset; for 

 a cock made of metal and wood, for drawing liquor from casks, 



