The stove designed by these gentlemen (for which they had a patent in 1831,) has a grate of bars, of a semi-elliptical form, attached to a straight back, which is brought much further forward than are the backs of stoves of the usual construction, by which arrangement three sides, or what is equivalent to three sides, of the fire, is in a situation to radiate heat into the room. Immediately over the fire is placed a metallic hood, which receives and radiates into the room a portion of the heat which would otherwise pass up the chimney The distance between the fire and hood is diminished and increased at pleasure, by elevating or depressing the grate containing the fire, and thus is obtained the means of increasing or diminishing at pleasure the draft of the fire, and of preventing the escape of smoke into the room. The change in the altitude of the grate is effected by means of projections from the grate passing through vertical slits in the back, which projections are joined together by a cross bar, attached to a lever by a connecting link; this lever has on its exterior end a toothed sector, which is actuated by a small pinion, whose axis receives a regulating winch, passing through a small hole in the back.

This hole, with the pinion axis, is the only part connected with the rising apparatus which is visible in front, which admits of their being manufactured in a style of great elegance and neatness.