Fig. 38. Ordinary Stove.
The oven is the space under and around the back and front sides of the fire-box. The oven-bottom is not introduced in the diagram, but it is a horizontal plate between the fire-box and what is represented as the “flue-plate,” which separates the oven from the bottom of the stove. The top of the oven is the horizontal corrugated plate passing from the rear edge of the fire-box to the back flues. These flues are three in number—the back centre-flue, which is closed to the heat and smoke coming over the oven from the fire-box by a damper, and the two back corner-flues. Down these two corner-flues passes the current of hot air and smoke, having first drawn across the corrugated oven-top. The arrows show its descent through these flues, from which it obliquely strikes and passes over the flue-plate, then under it, and then out through the centre back-flue, which is open at the bottom, up into the smoke-pipe.
The flue-plate is placed obliquely, to accumulate heat by forcing and compression; for the back space where the smoke enters from the corner-flues is largest, and decreases toward the front, so that the hot current is compressed in a narrow space, between the oven-bottom and the flue-plate at the place where the bent arrows are seen. Here again it enters a wider space, under the flue-plate, and proceeds to another narrow one, between the flue-plate and the bottom of the stove, and thus is compressed and retained longer than if not impeded by these various contrivances. The heat and smoke also strike the plate obliquely, and thus, by reflection from its surface, impart more heat than if the passage was a horizontal one.
The external radiation is regulated by the use of non-conducting plaster applied to the flue-plate and to the sides of the corner-flues, so that the heat is prevented from radiating in any direction except toward the oven. The doors, sides, and bottom of the stove are lined with tin casings, which hold a stratum of air which is a non-conductor. These casings are so arranged as to be removed whenever the weather becomes cold, so that the heat may then radiate into the kitchen. The outer edges of the oven are also similarly protected from loss of heat by tin casings and air-spaces, and the oven doors opening at the front of the stove are provided with the same economical savers of heat. High tin covers placed on the top prevent the heat from radiating from the top of the stove. These are exceedingly useful, as the space under them is well heated and arranged for baking, for heating irons, and many other incidental necessities. Cake and pies can be baked on the top, while the oven is used for bread or for meats. When all the casings and covers are on, almost all the heat is confined within the stove; and whenever heat for the room is wanted, opening the front oven doors turns it out into the kitchen.
Another contrivance is that of ventilating-holes in the front doors, through which fresh air is brought into the oven. This secures several purposes: it carries off the fumes of cooking meats, and prevents the mixing of flavors when different articles are cooked in the oven; it drives the heat that accumulates between the fire-box and front doors down around the oven, and equalizes its heat, so that articles need not be moved while baking; and lastly, as the air passes through the holes of the fire-box, it causes the burning of gases in the smoke, and thus increases heat. When wood or bituminous coal is used, perforated metal linings are put in the fire-box, and the result is the burning of smoke and gases that otherwise would pass into the chimney. This is a great discovery in the economy of fuel, which can be applied in many ways.
Heretofore most cooking-stoves have had dumping-grates, which are inconvenient from the dust produced, are uneconomical in the use of fuel, and disadvantageous from too many or too loose joints. But recently this stove has been provided with a dumping-grate which also will sift ashes, and can be cleaned without dust and the other objectionable features of most dumping-grates.
Those who are taught to manage the stove properly keep the fire going all night, and equally well with wood or coal, thus saving the expense of kindling and the trouble of starting a new fire. When the fuel is of good quality, all that is needed in the morning is to draw the back-damper, shake the grate, and add more fuel.
Another remarkable feature of this stove is the extension-top, on which is placed a water reservoir, constantly heated by the smoke as it passes from the stove, through one or two uniting passages, to the smoke-pipe. Under this is placed a closet for warming and keeping hot the dishes, vegetables, meats, etc., while preparing for dinner. It is also very useful in drying fruit; and when large baking is required, a small appended pot for charcoal turns it into a fine large oven, that bakes as nicely as a brick oven.
Another useful appendage is a common tin oven, in which roasting can be done in front of the stove, the oven doors being removed for the purpose. The roast will be done as perfectly as by an open fire.
This stove is furnished with pipes for heating water, like the water-back of ranges, and these can be taken or left out at pleasure. So also the top covers, the baking stool and pot, and the summer-back, bottom, and side-casings can be used or omitted as preferred.