336 
List of Patents in 1821. 
cure, light, easy, elegant, cheap, and durable, trusses? Sealed 
at Edinburgh 18th April 1821. 
10. To James White of Manchester, civil engineer, for 
u Certain new machinery adapted to preparing and spinning 
wool, cotton, and other fibrous substances, and uniting several 
threads into one, and also certain combinations of the said new 
machinery with other machines, or with various parts only of 
other machines already known and in use. Sealed at Edin- 
burgh 18th April 1821. 
11. To Charles Phillips, of the city and county of Ha- 
verford-west, Commander in the Navy, for certain <£ Improve- 
ments upon capstans?’ Sealed at Edinburgh 28th May 1821. 
12. To Richard Jones Tomlinson of Bristol, merchant, 
for “ An improved rafter for roofs, or beam for other purposes?’ 
Sealed at Edinburgh 25th May 1821. 
13. To RoBERt Delap of Belfast, Ireland, for “ Certain 
improvements in producing rotatory motion.” Sealed at Edin- 
burgh 25th May 1821. 
14. To Samuel Hall of Rasford, county of Nottingham, 
cotton-spinner, for “ An improvement in the manufacture of 
starch.” Sealed at Edinburgh 25th May 1821. 
15. To William Frederick Colland of 195. Tottenham 
Court Road, parish of St Pancras, county of Middlesex, musi- 
cal instrument-maker, for “ Certain improvements on musical 
instruments called Piano-fortes.” Sealed at Edinburgh 30th 
May 1821. 
16. To John Leigh Bradbury of Manchester, gentleman, 
for “ A new mode of engraving and etching metal rollers used 
for printing upon woollen, cotton, linen, paper, cloth, silk, and 
other substances. Sealed at Edinburgh 1st June 1821. 
P. Neill, Printer. 
