Specification of Joseph Johnson and Joe Cliffe : furnaces.

  • Johnson, Joseph
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Joseph Johnson and Joe Cliffe : furnaces. Source: Wellcome Collection.

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    Johnson $ Cliffes Impts. in Furnaces, or in the Means of Consuming Smoke. the flue, it furnishes the same with the proper supply of oxygen to effect the combustion thereof. By this means all the combustible parts of the fuel become consumed, and none but the incombustible gases pass along the flue and out at the chimney. In some cases, in order to keep up a draft and draw 5 away the incombustible gases from the flue, and also to get rid of the noxious part thereof, we make use of a fan exhauster, or jet of steam, which draws the gases from the flue and conducts them to a chamber, where they are submitted to the action of water or some other chemical agent, for the purpose of absorbing the noxious portion of them, before allowing the remaining portion 10 to escape into the atmosphere. We would observe that various plans may be devised for carrying out our improvements; but we have thought it advisable to describe such arrangements as have been found to answer in practice, pre¬ mising, however, that it may be necessary to modify in some manner the arrangements herein shewn according to the circumstances of any particular 15 case and the peculiar construction of boiler to which our improvements are to be applied. In the accompanying Drawings we have shewn our improvements as applied to a large waggon boiler and also to a cylindrical boiler, both of which boilers are intended for land purposes; we have also shewn the improve¬ ments as applied to a marine boiler. Fig. 1 is a longitudinal section taken 20 through a waggon boiler and furnace, with our improvements adapted thereto. Fig. 2 is a sectional plan view taken in the line 1, 2, of Fig. 1, and shewing the arrangement of the flues. Fig. 3 is another sectional plan view taken about the line 3, 4, of Fig. 1, and shewing the air chambers, the side channels, and hollow arch for admitting heated air to the combustible gases. Fig. 4 is 25 a transverse vertical section of the boiler and hollow arch taken in the line 5, 6, of Fig. 1; and Fig. 5 is another transverse vertical section taken in the line 7, 8, of Fig. 1. A waggon boiler of the ordinary construction is seen at a, a, a, a, and the fire-place or furnace at h, b ; the fire bridge at the back of the furnace is seen at c, c; and cl, d, is an arched chamber situated above the 30 fire-place, and to which air is admitted from the external atmosphere by means of an opening at e in front of the furnace and above the fire door. This entrance to the arched chamber cl, d, may be furnished with a door for the purpose of regulating the admission of air to the chamber d, d, from whence the heated air passes into the side passages /, /, (seen best in Figures 35 s, 4, and 5,) to the hollow arch g, g. This arch is constructed of hollow fire tiles or bricks, and is built up on the hollow channel h, which communicates with the side channels or passages /, /, seen best in Fig. 4, and in elevation upon an enlarged scale at Fig. 5*. The hollow channel h also communicates, by means of the hollow tiles or bricks i, i, i, i, with the hollow arch g, g, above.
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