Lloyds Patent Stove consists in the adaptation of a box in a recess at the back of an ordinary register or other stove, for the reception of sufficient coals for a day's consumption, which are to be drawn forward into the fire as they may be wanted, and thus supersede the use of the coal scuttle,—an utensil which has certainly its inconveniences. That this operation may be performed with facility, the box at the back of the stove is closed with a sliding door, the weight of which is supported by a counterbalance suspended over a pulley ; it is therefore drawn up or let down with ease, by means of a small handle placed conveniently, when the coals may be raked on to the fire by means of the poker.
Smoke-consuming Stove.—The annexed cut is illustrative of a design, by an anonymous inventor, for a stove to consume its own smoke. We are not aware of its having ever been constructed, but as it presents a novel and elegant arrangement of parts, calculated to answer the intended purpose in judi cious hands, we give it insertion. The inventor proposes that the smoke from the fresh fuel shall be allowed to ascend up a short flue, and then descend and rise again through a tube placed in the middle of the fire, after which the tube conducts the remaining incombustible gases into the chimney.
The intense heat of the tube which rises through the fire must necessarily burn the smoke, economize fuel, and increase the temperature of the room.
Silvester's Patent Stove.—The common methods of heating buildings by means of hot air stoves had been much and justly complained of, from the salubrity of the air being fre quently injured by its coming in contact with the surface of a stove compara tively small, but intensely heated; and to remedy this evil, the late Mr. Silvester introduced cockle stoves, first in the Infirmary of Derby, and afterwards in many other places, with large heating surfaces, that they might be sufficient to heat moderately a large quantity of air, but not to be heated so high as to injure any portion of it ; and thus was obtained an extensive ventilation by air moderately warmed. (See Am.) Still, however, stoves of this kind, without considerable care and skill on the part of the firemen, were liable to become over-heated, and at times to deteriorate the air; and to obviate the possibility of this defect seems to be a principal object with the present patentee. He proposes, in the first place, to lower the fire grate, till the bottom are on a level with the surface of the floor of the room in which it is placed. The fire bars are prolonged and widened to touch each other in front of the fire, so as to form a hearth. They require no fastening into their places, but simply to be laid upon appropriate bearings at each end. There are grooves
made on the under sides of the fire bars, for the admission of fresh air for supporting the combustion of the fuel within the grate, and for the escape of hot air into the room. It is stated that the bars may be either made of equal lengths, to constitute a rectilineal hearth, or of different lengths, to constitute a curvilineal one, at pleasure. When the ash pit, which is situated below the fire in the usual manner, requires clearing out, a few of the fire bars are to be removed, which can be effected with facility, as they are not made fast to any thing. Mr. Silvester proposes, in the second place, to surround at least three sides of his fire with a vessel containing water, and upon the exterior of this water vessel he causes, a large quantity of cold air to impinge, that its tem perature may be elevated sufficiently to communicate the required degree of heat or ventilation to any adjacent apartments to which it may be conveyed. For the purpose of conveying the cold air to, and the heated air from, the water vessel, the patentee proposes to employ apparatus of the same description as that employed with the hot air cockles invented by his father.
Gaunt and Eckstein's Grate.—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 manu factured in a style of great elegance and neatness.