Specification of Thomas Preston, junior : fire-places for steam boilers.

  • Preston, Thomas, junior.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Thomas Preston, junior : fire-places for steam boilers. Source: Wellcome Collection.

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    Ord ————— ' .* 1 ■ ■ —--:. .. ’ ---: 1 >.■. i.-t '.*t* ■ * ■!■■■ . i Prestons Improvements in Fire-places for Steam Boilers, <Sfc. The foregoing I conceive will be sufficiently explanatory of the nature of my Invention. Though I have made all my drawings to a certain scale, they will of course admit of much variation in point of dimensions and proportions without deviating from the principle I have here explained. This principle will be applicable to boilers of every description, namely, that of placing the 5 copper or boiler as it were in the midst of the fire, and confining the heat with which it is enveloped as closely as possible. With respect to the pans for melting metal they will answer the purpose of a reverberatory furnace only in a more advantageous manner, the flame wholly enveloping the matter to be fused, by which means the fire not only does its duty more expeditiously, but 10 likewise with much less injury to the furnace. For a plumber’s use or where a great heat is not wanted the iron cover may be brought nearly close down upon the edges of the pan. It may be proper to observe, that the pan and flues may be covered over by any other substance or material capable of confining the heat, and that will admit of the pan being worked with equal convenience. 15 In witness whereof, I, the said Thomas Preston, have hereunto set my hand and seal, this Twenty-sixth day of May, in the year of our Lord One thousand eight hundred and eight. TIIO. PRESTON, JunL (l.s.) AND BE IT REMEMBERED, that on the Twenty-sixth day of May, in 20 the forty-eighth year of the reign of His Majesty King George the Third, the said Thomas Preston the younger came before our said Lord the King in His Chancery, and acknowledged the Instrument aforesaid, and all and every thing therein contained and specified, in form above written. And also the Instrument aforesaid was stamped according to the tenor of the Statute made 25 in the Forty-fourth year of His said Majesty’s reign. Inrolled the Twenty-sixth day of May, One thousand eight hundred and eight. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1851.