Specification of Jonathan Dickson : furnaces : machinery for giving motion to the fire-bars and supplying coal thereto : smoke condenser, &c.

  • Dickson, Jonathan.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Jonathan Dickson : furnaces : machinery for giving motion to the fire-bars and supplying coal thereto : smoke condenser, &c. Source: Wellcome Collection.

    6/6 (page 4)
    Dowdeswell. I also cause the smoke to pass through a certain depth of water in the cistern or vessel, by means of placing a plate or false top inside of the said vessel, under which the current of rarefied air and smoke passes, and one end of this plate is either lowered near to or into the water contained in the said cistern, or the water is caused to raise near to or above the said plate to any height 5 required; and to assist the draft when necessary, I cause a large space at or near the bottom of the chimney to be exhausted by any machanical apparatus applied for that purpose, or by rarefying the atmospheric air in the said space by means of heated pipes in the common way. In witness whereof, I, the said Jonathan Dickson, have hereunto set my 10 hand and seal, this Fourth day of May, One thousand eight hun¬ dred and twenty-one. JONATHAN DICKSON, (l.s.) AND BE IT REMEMBERED, that on the Fourth day of May, in the year of our Lord 1821, the aforesaid Jonathan Dickson came before our 15 said Lord the King in His Chancery, and acknowledged the Specification aforesaid, and all and everything therein contained and specified, in form above written. And also the Specification aforesaid was stamped according to the tenor of the Statute made for that purpose. Inrolled the Fourth day of May, in the year of our Lord One thousand 20 eight hundred and twenty-one. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1855.