Messrs. Atkins and Marriott had a joint patent for a smoke-consuming stove on the principle of the last described, which they manufactured in a style of great elegance, and adapted to the various situations and applications of domestic stoves. The patentees state their objects to be, first, to afford a remedy for smoky chimneys; and secondly, to economize fuel, and regulate the heat evolved from stoves or grates for warming apartments, and for the various operations of cooking. In order to effect the combustion of the smoke, the coals are thrown into a coal chamber at the back of the grate, which is closed by a door. At the lower part of this chamber there is an opening through the back into the grate, the interior of the box being formed so as to throw the coals forward to supply the grate when necessary. The other improvement made by the patentees consists of an appendage, in lieu of a fender, attached to the front and lower part of any kind of stove or grate, which they denominate a basement.

This basement they usually make of a convenient inclination, to put the feet upon, but it may be made of any figure or dimensions according to individual taste.

It is provided with a drawer or box to receive the ashes, beneath the fire, and with apertures in front to admit air beneath the fire bars. The whole of the interior of this basement, except the ash box, is filled with a mixture of pulverized charcoal and lime; the stove has also a canopy or cornice filled with similar slow conductors of heat; also each side of the grate, as well as a part of the back, are provided in like manner. The effect of these appendages, in retaining that portion of heat which is nearly all lost to the apartment in other stoves, is doubtless very great; we are, indeed, credibly informed that it will preserve nearly the same temperature in a room for several hours after the fire is extinguished. These stoves have pipes or passages for allowing a column of air to ascend through the basement and upper portion, which becomes warmed in its passage, and flows out into the apartment above.