158 New Patents, (Aue. 
ArTIcLE XII. 
Lisi of Patents. 
Tuomas Ports, Batchworth Mills, Rickmansworth, in the 
county of Herts; for combining and applying principles already 
known for the purpose of producing pure fresh warm air, and of 
such mode or means of combination and application of principles 
already known to such purposes as aforesaid. March 14, 1815. . 
JonaTHan Ringway, Manchester ; for a method of casting and 
fixing at the same time metallic types on the surface of metallic 
cylinders or metallic rollers ; or any cylinders or rollers having me- 
tallic surfaces ; or on blocks of metal ; or on blocks having metallic 
surfaces; or on flat metallic plates; for the purpose of printing 
patterns on cloth made of cotton or linen, or both. March 14, 
1815. 
WituiaMm Bett, Edinburgh ; for certain improvements in the 
apparatus for manuscripts or other writings or designs, March 14, 
1815, 
Henry Hovutpsworts, Anderton, near Glasgow; for a me- 
thod of discharging the air and condensed steam from pipes used 
for the conveyance of steam, for the purposes of heating buildings, 
or other places. March 18, 1815. 
Cuares Gent, Congleton, Chester, and Savuare CLarK; for 
a method of making a swift, and other apparatus thereto belonging, 
for the purpose of winding silks. March 21, 1815. 
Ricaarp Sirsa, Tibbington House, Staffordshire; for im- 
provements in smelting iron stone or iron ore, lead or copper ore, 
and other mineral or metallic substances; also of refining crude 
iron, lead, copper, gold, silver, tin, and all other metals. or me- 
tallic bodies ; and of making and manufacturing iron. March 29,- 
1815. 
Tuomas Baeor, Birmingham; for a method and machine for . 
passing boats, barges, and other vessels from a higher to a lower 
level, and the contrary, without loss of water. April 4, 1815. 
Wiitiam VauGHAN Pater, Ilminster, Somersetshire ; fora 
method of twisting and laying of hemp, flax, ropes, twine, line, 
thread, mohair, wool, cotton, silk, and metals, by machinery, 
whereby. considerable saving of manual labour. is effected. April 
4, 1815. 
WittraM Losx, Point Pleasant, Northumberland ; for a plan 
for fire-places or furnaces for heating ovens and boilers, and the 
water or other liquids contained in boilers, and for converting such 
water or other liquids into steam, for the purpose of working en- 
gines, and for other uses in manufactures. April 8, 1815. 
JosHua Saaw, Mary-street, Fitzroy-square, London; for cer- 
tain improvements in the tool or instrument called the glazier’s 
diamond. April 14, 1815, 
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