Specification of James Burnes : fire grates, stoves, furnaces, and chimneys.

  • Burnes, James.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Burnes : fire grates, stoves, furnaces, and chimneys. Source: Wellcome Collection.

    5/10 (page 3)
    Burns' Improvements in Fire Grates, Stoves, Furnaces, and Chimneys, c^c. of it. The air that maintains the combustion is supplied through the pipe or tube A, (Figure 2 and Figure 4,) or from between the under ceiling and floor, as before mentioned, from which it passes up by the back or side of a drawer. B, Figure 2, according as it is most convenient to bring it up by the one or the 5 other; the back, however, is preferred where convenience admits of it. The front of this drawer in its place is seen in Figure 1, at C. The intention of this drawer is to receive the ashes that fall from the bottom bars of the grate, sections of which are represented at D, D, Figure 2. The ashes as they fall from the bars strike against the sides of the internal cavity E, and then are 10 carried by their own gravity through the narrow part F, and fall into the drawer. This part of the construction maybe easily understood by conceiving it to be an hollow vase, as it actually is, with a drawer in its pedestal or basement, and having a grate over it on which the fire rests. The valve, door, cock, or other contrivance by which the external air is admitted or excluded may be made in 15 many various ways, and may be either in the neck F of the vase, or in the air tube, or in the drawer B, or C, or, which I prefer, in the cavity belling the drawer, the pedestal or basement of the vase being made large enough to admit of such cavity. Various constructions may be resorted to, but that represented in Figure 3 (which is a ground plan of a proper chimney for such a grate, and 20 in which a bird's eye view of one half of the grate may be seen in its place, while the other half represents an horizontal section of the basement or pedestal, which is supposed to be open, shewing the drawer in its place with the cavity behind it,) will be found to answer every purpose. The cavity G is separated from the place in which the drawer is put by a partition (best made of plate or 25 cast iron) passing from II to II, in which there is an opening I, with a cover K. To the cover K is attached a small bar L worked by another shorter bar M, to which it is attached by any simple joint. The bar M is fastened into an upright pivot, the top of which comes up through the pedestal at one of its corners, or any other convenient spot, and is furnished with a button to be laid hold of by SO the finger and thumb, or with a top fitted to a key, by the turning of which the cover Iv is made to shut or open the aperture I, and consequently to prevent or facilitate the passage of the air from the hole at G, which represents the internal mouth of the air tube, the other end of which is on the outside of the house, or in any cellar or other apartment, as before described. When the air has 35 passed through the aperture I, it finds no difficulty in passing on to the bottom of the grate, that back or side of the drawer next which the aperture is being made low to allow it to flow in freely. The grate and its internal cavity E may be of any convenient form, but circular or eliptical will answer best, especially when another improvement included in the present Patent is intended to be applied, and which