Specification of George Anstey : furnaces, fire-grates, and chimneys.

  • Anstey, George.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of George Anstey : furnaces, fire-grates, and chimneys. Source: Wellcome Collection.

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    Anstefys Impts. in Consuming Smoke, ayid Regulating the Draft in Chimneys, or cups in the second bridge its carbonaceous inflammable matter will have become for the most part consumed, and the incombustible vapours or gases may pass as usual to the chimney. Fig. 3 is a section of a boiler furnace with my improvements adapted thereto; 5 the extended bridge is shewn at a. It consists of the ordinary bridge of fire¬ brick extended to the roof of the furnace, and having holes formed in it. 5 is the second bridge, which has cones or cups c fitted into it, such cones or cups having perforations formed in them for the passage of the incombustible vapours or gases into the chimney. 10 Figures 4 and 5 represent detached views of the bridges a and 5 on a larger scale. It may be found necessary to apply an additional bridge, and to modify the construction and arrangement of these bridges in different furnaces, but whatever be the number employed the purpose answered by them will in all cases be similar, 15 videlicit, to cause a greater consumption of the carbonaceous inflammable matter in the smoke by holding it longer in direct contact with the flames and intensely heated air within the furnace. It is also desirable to remark that this my Invention may be combined with all known means of increasing the draft, and of feeding the fuel to the best advantage in furnaces, and also with different 50 arrangements of the fire or fires, the object of my Invention being simply to supply a means of retarding the passage of the carbonaceous inflammable matter so as to prevent its going forward in an unconsumed state along with the incombustible vapours or gases which it is necessary to get rid of. I proceed now to describe my improvements in regulating the draft in 25 chimneys. These consist in the adaptation and application of certain apparatus (herein-after described.) fixed in the upper part of the chimney, and so formed as to prevent the exfiernal air from coming into sudden contact mth the warm air in the chimney, by which means this air, passing steadily upwards from the fire-place, is maintained at a more uniform temperature, especially at its 3Q upper part, and thereby maintains a more regular draft in the chimney. Figures 6 to 13 represent different views of the apparatus for regulating the draft in chimneys. Fig. 6 is an outside elevation of the covering for a chimney made according to the principle herein-before set forth, and Figures 7, 8, and 9 are vertical and horizontal sections designed to shew the construction of 35 the same. It will be seen that a current of external air cannot be impelled suddenly down the chimney, but on entering the inner vessel a it strikes against the bottom 5 of the said vessel, is deflected through the openings c, c, and passes into the space between the vessel a and the chimney pot d. This external air has thus less tendency to cool the air in the upper part of the chimney, and