USRE4568E - Improvement in cooking-stoves - Google Patents

Description

Cooking Stoves. f

oHToN. Z

[104.] -MARY ANN. Bou

UNITED STATES PATENT OFFICE.,`

MARY ANN BOUGHTON, OF NORWALK, CONNECTICUT.

IMPROVEMENT IN COOKING-STOVES.

4To-all whom it may concern:

Be it known that I, MARY ANN BoUGHToN, of

l Norwalk, in the county of Fairfield, State of Connecticut, have invented certain Improvements in Cooking- Stoves, of which the following is a specification:

My invention consists of certain improvments in cooking-stoves, too fully explained hereaiter toneed preliminary explanation, the main object of the said improvements being toobtain a thorough circulation of the heated products of combustion around the oven without interfering with the draught.

Figure l, Sheet l, is a sectional elevation, through the center, of my improved cook-stove5 Fig. 2, a sectional plan on the line x, Fig. l; Fig. 3, a sectional elevation on the line ,y y, Fig. 2, Fig. 4, a detached section on the line z z, Fig. 3, Fig. 5, Sheet 2, a perspective View, and Fig. 6, a sectional plan on the line zo w, Fig. l.

The outer casing A of the above is oblong and rectangular, and has at the top boiler-holes b b1 b2 bJ b4, arranged as shown in Fig. 5, there being detachable cross-pieces e el between the holes b1 b3 b2 b4, and a similar crosspiece, e2, between the holes b3 b4. The interior of the casing is'divided by parallel horizontal plates a il f and vertical plates c d, so as to .form two chambers, B and C, three horizontal iiues, h h1 h3, and a vertical ilue, h2, all ofthe said iiues extending entirely across the width of the stove. The chamber C is the oven, and has at both sides suitable doors, and the chamber B is divided by a horizontal grate into the fire-placer] and ash-pit q. In the front plate K, below the grate, is an opening which coincides with a similar opening in the projecting hearthplate k', and to the plate k are hung doors I I', which close the opening in the front plate and have at their lower edges iia'nges ZZ, which, when the doors are closed, cover the opening in the hearth-plate. The plate o, which forms the back of the ash-pit and fire-chamber, extends from the base-plate of the stove to the plate a and is curved so that both ends bear against the iront plate 7c, the plate a being cut away so that the fire-chamber communicates directly'with the liue h. The exit-opening D is surrounded by the usual liange `and is arranged in front of the back-plate d of the oven, and communicates with a short' cylindrical ilue, o, formed by a tube, i', extending from the plate tothe upper plate ofthe stove; and in the ISpeci'eation forming part of Letters Patent No. 113,842, dated April 18, 1871 reissue No. 4,568, dated September 26, 1871.

sides of this tube are openings to which are fitted slidesmz, with operating-rods or strips extending through and above the upper stove-plate7 Fig. 4. From the plate f to the plate i, near the front and adjacent to each side of the stove, extend two tubes, g g, which form communications between the lower flue h3 and the flue h. To the rear plate of the stove is hinged a plate, E, which may be turned down to a horizontal position, forming a shelf upon which to place 'cooking-utensils the contents of which are to be kept in a warm state; or it may be turned up against the rear plate, out of the way, when not in use, as shown in Fig. 3.

W'hen a fire is first kindled in the stove the slidesn n are depressed, as shown in Fig. 4, so as to open a communication between the tlue hl and the exit-openingD for the passage ofthe heated gases directly to the exit-opening from the said iiue. After the fire has begun to burn freely and emits butlittle smoke the slides n u are raised, when the heated gases will pass down the liuc h2, along the bottom iiue h3, upward through the tubes g g to the flue h, and along the latter through the openings n n to the exit-pipe. It will be seen that, instead of passing first to one side of the stove then to the other, or of passing through corner or central flues, the heated gases pass in an unbroken stream the complete width of the stove, in contact with the entire surface of every plate which they traverse, so that the said plates are heated uniformly, in stead of all the heat being concentrated at the center or at one or both sides, as usual, while, owing to the absence of all guiding-plates in the lues, the draught is not in the least obstructed. This is a matter of much importance, especially with the cheaper kinds of stoves, which generally have to be used where the chimneys are small and low and the draught defective. In some stoves the draught is reversed at the top-that is, the gases, after passing over the plate c, are brought back between the plate and the top of the oven. This not only obstructs the draught, but it also concentrates the greater part ofthe heat at the top of the stove and prevents the proper heating of the other parts. This is avoided by my improvement. Owing to the arrangement of the tubes g g in respect to the iiues,the gases are passed in contact with the ovenplates before passing through the said lines, every plate of the oven being thus uniformly heated before the stream of gases is divided, while the radiation of heat from the rear side of the frepot is inno Way obstructed.

By arranging a tubular flue With side op enin gs directly beneath the exitopening and in front of the baok plate d of the oven the usual horizontal valves and dampers may be dispensed with, the dividing of the rear4 ue and the obstruction of all theues being thus avoided. By forming the anges t t on the front doors I I the necessity of providing a detachable lid for the opening in the hearth-plate is avoided.

Without confining myself to the precise cony struction and arrangement of parts shown and described, I elaim- 1. The combination, in a oook-stove, of an oven, a fire-place, and tubes g g arranged Wholly Within the oven, as described, and communicating with the ues, as set forth, so as to conduct the gases through the oven after they have passed round three sides thereof, as set forth.

2. A oook-stove in which the gases pass round three sides of the oven Without being reversed, and Without being divided except at the point over the upper plate Where the exit-Hue is situated, as set forth.

3. The combination of the exit-opening and the tubular ilue communicating therewith and with upper and lower lues h and h1, furnished with slides, substantially as specified.

4. The combination With the front plate k and recessed hearth-plate 7c of hinged doors I I' hav-

Images