Specification of Neil Arnott : furnaces; steam and air engines; distilling, evaporating, and brewing apparatus.

  • Neil Arnott
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Neil Arnott : furnaces; steam and air engines; distilling, evaporating, and brewing apparatus. Source: Wellcome Collection.

    17/18 page 13
    Arnott's Improvements in Furnaces, Steam and Air Engines, Distilling, equipped with a cock, in order to regulate the velicity of discharge to the degree of cooling that may be required; and the reservoir T should be as capacious as convenient in order to afford a constant supply of cold water; but in situations where a large reservoir may be objectionable, or where time 5 cannot be afforded for the spontaneous cooling of such water, I place a series of flat pipes just under the surface of the water in the reservoir, as shewn at W, one end or extremity of such pipes being left open and made to turn up into the air, while the opposite ends or extremities pass into one common pipe that goes into the flue or chimney of the boiler P, or any other chimney, the 10 consequence of which is that the heat of the water in the reservoir and the draft of the chimney combined will always produce a current of cold air through the flat pipes disposed as aforesaid, which will have a very powerful effect in cooling the water in which they are so immersed. For the purpose of distilling, I use and apply the refrigerator and apparatus last above described, with 15 the exception only that steam enters the pipe Q instead of the hot liquor, and as I confine my process to distilling in vacuo, or in rarefied air, so the dis¬ charging pipe must descend perpendicularly for about thirty-five feet; and in order to produce the first vacuum I fill the whole interior of the flat boxes and pipes of my refrigitory as aforesaid with water, and permit it to run off 20 as before described, or I draw such water off by the application of an ordinary pump or exhausting syringe to some convenient part of the said refrigitory. In describing the several parts of my aforesaid Invention and improvements, I have purposely avoided the statement of dimensions, unless when they were absolutely necessary to the action of the same, because such dimensions and 25 proportions must vary with the circumstances under which the same may be formed and constructed. And in the description of the air engine, evaporating apparatus, and refrigeratory, I have also been general as to form, because my Invention does not consist in the particular forms or proportions of the matters and things described, but in the general combination and arrangement of 30 pistons, cylinders, tubes, valves, and other well known mechanical agents for the production of new and beneficial purposes to which such things have not been so employed before, or at any rate in so efficient and beneficial a manner; and I accordingly claim the arrangements and appropriations herein-before described to be made, and the inventions and improvements alluded to in the 35 herein-before in part recited Patent. In witness whereof, I, the said Neil Arnott (party hereto), have here¬ unto set my hand and seal, this Fourteenth day of May, in the year of our Lord One thousand eight hundred and twenty-two. NEIL (l.s.) ARNOTT.
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