Licence: Public Domain Mark
Credit: Specification of James Watt : furnaces and fire-places. Source: Wellcome Collection.
![A.D. 1785 ..N° 1485. Furnaces and Fire-places. WATT’S SPECIFICATION. TO ALL TO WHOM THESE PRESENTS SHALL COME, I, James Watt, of Birmingham, in the Comity of Warwick, Engineer, send greeting. WHEREAS His most Excellent Majesty King George the Third, by His Letters Patent under the Great Seal of Great Britain, bearing date at West- 5 minster, the Fourteenth day of June, in the twenty-fifth year of His reign, did give and grant to me, the said James Watt, His especial licence, full power, sole privilege and authority, that I, the said James Watt, my exors, adihors, and assigns, should and lawfully might, during the term of years therein expressed, make, use, exercise, and vend, throughout that part of 10 Great Britain called England, His Dominion of Wales, and town of Berwick upon Tweed, my Invention of “ Certain newly Improved Methods of Con¬ structing Furnaces or Fire-places for Heating, Boiling, or Evaporating of Water and other Liquids, which are applicable to Steam Engines and other Purposes ; and als<3 for Heating, Melting, and Smelting of Metals and ]5 tiieir Ores, whereby greater Effects are produced from the Fuel, and the Smoke is in a great measure Prevented or Consumed;” in which said recited Letters Patent is contained a proviso obliging me, the said James Watt, particularly to describe and ascertain the nature of my said Invention, and in what manner the same is to be performed, by an instrument in writing 20 under my hand and seal, and to cause the same to be inrolled in His Majesty's High Court of Chancery within one calendar month next and immediate1 y after the date of the said Letters Patent, as in and by the said Letters Patent](https://iiif.wellcomecollection.org/image/b30741208_0003.jp2/full/800%2C/0/default.jpg)
