10 
Steam Engine, 
ed witliout the funnel or perpendicular flue D in Figure 
1. N. B. The same letters refer to the same parts in all 
the preceding figures. I also construct these new fire-^ 
places so that the part G H lies sloping, or horizontal, 
and otherwise vary the figure or form, and proportions, 
of the same ; but, in all cases^ the principle is the same ; 
the fresh or raw fuel being placed next the external air, 
and so that the smoke or fiame passes over, or through, 
the coked or charred part of the fuel. I also occasion^ 
ally cover the opening G, and cause the air to enter only, 
or principally, at I I. Secondly, in some cases, I place 
the fresh fuel on a grate as usual, as at A A, (Figure 6,^ 
and beyond that grate, at or near the place where tlie fiame 
passes into the flues or chimneys, I place another smaller 
grate B, on which I maintain a fire of charcoal, cokes, or 
coals which have been previously burnt until they have 
ceased to smoke ; which, by giving intense heat, and ad» 
mitting some fresh air, consumes the smoke of the first 
fire. Lastly, be it remembered, that my said new inven- 
tion consists only in the method of consuming the smoke, 
and increasing the heat, by causing the smoke and flame 
of the fresh fuel to pass through very hot funnels or pipes, 
or among, through, or near, fuel which is intensely hot, 
and which has ceased to smoke; and by mixing it with 
fresh air when in these circumstances ; and in the form 
and nature of the fire-places herein mentioned, described, 
and delineated ; the boilers, and other parts of the furna- 
ces, being such as are in common use. And be it also 
remembered, that these new- invented fire-places are ap- 
plicable to furnaces for almost every use or purpose. In 
witness whereof, &c. 
