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

  • Arnott, Neil, 1788-1874.
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.

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    Arnott's Improvements in Furnaces, Steam and Air Engines, Distilling, <$rc. the said Letters Patent, that then the said Letters Patent, and all liberties and advantages whatsoever thereby granted, shall utterly cease, determine, and become void, as in and by the same, relation being thereunto had, will more fully and at large appear. NOW KNOW YE, that in compliance with the said proviso, I, the said 5 Neil Arnott, do hereby declare that the nature of my aforesaid Invention, and the manner in which the same is to be practised and carried into effect, is fully described and ascertained in the following description, and the explanatory Drawings or Figures thereunto annexed, that is to say:— My improvements consist, first, in particular means of burning or destroying 10 smoke, and thereby converting it into so much additional fuel; secondly, in particular means of making fuel burn in condensed air, either to produce intense heat for various purposes or merely to heat the air itself, so that its increased elasticity may become a motive power applicable to the purposes of labour in moving machinery; thirdly, in making liquids boil, evaporate, or 15 distill rapidly at heats much below their boiling points, by particular means of removing or lessening the atmospheric pressure upon their surfaces; and, fourthly, in particular means of cooling hot liquids in the process of brewing; all which said purposes I produce and bring about as follows: And, first, I burn or destroy smoke by introducing the fuel into my fire-place through a 20 number of metallic channels or troughs, against the inner mouths or openings of which the burning fuel lies, and between which, as between the bars of a grate, there are interstices for the passage of fresh air. The smoke given out from the advancing fresh fuel is thus made to pass through the ignited fuel, and while it is thus intensely heated it is at the same time intimately mingled 25 with the fresh air entering between the troughs, and is totally or almost totally consumed. Fig. 1, in the annexed Drawing, exhibits a perspective view of a fire-place, with a convenient form and disposition of these troughs, in which six of them are shewn with their oblique mouths projecting into the fire-place. They may be formed of wrought or cast iron, and are disposed side by side in 30 nearly parallel directions, as shewn at the letters a, a, a, a. They should not be much more in width than the ordinary fire bars used in furnaces, viz*, about two or two and a half inches, but should increase a little in width as they approach the fire, to facilitate the passage of the coals through them, and they are maintained in their parallel position by bars of iron rivitted to them both 35 above and below, the ends of which are seen at b, b, b, b. By the same means each chamber is retained and held at about half an inch distance from that which is next or contiguous to it, and thus the interstices or channels before- mentioned are formed as at c, c, c, for the passage of air to the burning fuel;