US175503A - Improvement in cooking-stoves - Google Patents

Description

2 Sheets-Sheet 1 A. P. RICH; CDOKING-S'TOVE.

No.175,503. Patented March 28,1876.

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Z Sheets-Sheet 2. A. P. RICH.

COOKING-STOVE. No. 175,503. Patented March 28,1876.

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AARON P. RICH, OF TROY, NEW YORK.

IMPROVEMENT IN COOKlNG-STOVES.

Specification forming part of Letters Patent No. 175,503,1iated March 28, 1876; application filed January 19, 1876. A

To all whom it may concern:

Be it known that I, AARON P. RICH, of Troy, Rensselaer county, State of New York, have invented a certain Improvement in Oooking-Stoves, of which the following is a specification: I

The object of my invention is the production of a cooking-stove wherein the oven can be raised to a higher and more uniform temperature with the same amount of fuel.

My invention therein consists, principally, in the manner of heating the oven; further, in a peculiar deflector placed in the combustionchamber; and, further, in the peculiar doors closing the front of the fire-box, all as more fully hereinafter explained.

To enable others skilled in the art to manufacture my stove, I now describe the same in connection with the drawings, in which- Figure l is a perspective view with the ovendoors and the top covers removed; Fig. 2, an elevation of the rear of the stove with the back plate taken off; Fig. 3, a central vertical section taken through the length of the stove; Fig. 4, a perspective view of the corrugated plates; Fig. 5, a perspective view of the stove, with the top and front removed, and the lower part of the corrugated back to the fire-pot broken away; and Fig. 6, an elevation of the back plate to the stove, with a part of the ascendingflue broken away.

Like letters denote corresponding parts in each figure.

A represents the oven, having its front upper part a rounded, closed on its top, bottom, front, and rear by hot air spaces, to be hereinafter described. Below the oven is situated a hot-closet-, A, as is usually the case, of much smaller size than the oven. B B are the side; 0 the top, D the back, and E the front, plates composing my stove. The bottom plate F of the stove is curved upwardly in front of the oven, and, connecting with the side plates, forms the ash-pit B, covered by the hearth-plate O. D is a rectangular grate, which is supported in lugs b in the fire-pot E and is adapted to be dumped forward, its rear side being supported by a lug, I), on the back of the fire-pot. The fire-box has its front exposed to view through the front plate of the stove, which is cut away and provided with of the way when open.

grate-bars E The grate D is supported in the walls of the fire-pot below the bars E so as to leave a space between the lower part' of the bars E and grate D large enough to admit a poker to rake the clinkers off of the grate, a bar being placed in front of such grate upon which to rest the poker. A space is also left between the grate and the bar in front of such grate, through which the clinkers fall into the ash-pit. Folding doors F close the front of the fire-pot. Each of these doors is composed of two parts, 6 e, hinged together. the part 6 being adapted to fold upon the part c, and the whole door adapted to be closed back on the side of the stove, so as to be out The front plate of the stove is provided with a projection, 0 above the bars E, which extends on the top and sides of the opening made to receive the said bars. The doors F have their top edge e flanged, the flanges springing over the projection e when the doors are all closed, forming a tight and convenient fastening for the doors.

On the top and front of the oven is a hotair space, G. inclosed within the walls of the stove. This space is formed by a regularlycorrngated plate, G, the corrugations of which run in the direction of the length of the stove, each depression being provided on its under side with a supporting-flange, f, resting on the top plate of the oven, and'dividing the hot-air space into separate air-channels, f The corrugated plate runs forward, taking the curve of the oven, and connects with a similarly-corrugated plate, G which forms the back of the fire-pot. the sides G3 of the fire-pot being also composed of corrugated plates, connecting with the corrugations of the plates G and G The back and sides of the fire-pot have flanges 1, like the flanges on the plate G. A series of holes, H, is made through the bottom plate of the stove, connecting the space G with the surrounding air. On the rear side of the oven a hot-air space, H, is formed between the back plate of the oven and the back plate D of the stove. The space G opens into the top of the space H its entire width, the said space H connecting with the hot-air space I, which is situated on the bottom of the oven, and between the bottom plate of the oven and the top plate of the hotcloset. The hot-air space H is provided with two dividing-plates, 9. These plates are connected together at their tops, near the top and center of the hot-air space H, and diverge to the bottom plate of the hot-air space I, dividing the space H into three parts, the central one of which is triangular in form. The hotair space I is provided with two dividingstrips, g, which connect with the plates 9, and terminate before reaching the front of the said hot-air space. The back plate D of the stove is provided with a flue, 1 attached to the same, and leading directly to the exit. The back plate D, near the lower end of this flue, is cut by a triangular opening, 1 of the same size as the central triangular space of the hot-air space H, and connecting with such triangular space and the central division of the hotair space I. K is a rectangular opening through the front of the top plate 0, lead ing into the combustion-chamber This opening is designed as a coal-feed, the frontplate of the stove being cast with a depressed portion to form a short inclined chute, h. This opening is closed with anysui-table cover. (Not shown.) Pendent from the under side of the top plate 0, and placed between the front pot-holes, is a winged deflector, L, which reaches to the bottom of the combustionchamberthe corrugated plate G. This deflector is placed with its wings at thetop extending most widely, curving inwardly and' downwardly on each side, so as to divert the currents of combustion both outwardly and downwardly. This casting spreads the products of combustion,throwing them the entire width of the combustion-chamber before passing into the exit. M is the collar to which the pipe is attached. This collar is divided into two parts by a cross-strip, 'i, which forms an extension of the back plate of the stove, the forward and larger part connecting directly with the rear of the combustion-chamber, while the other connects with the ascending The operation of my stove is as follows: The products of combustion rising from the the box strike the winged deflector, and, spreading over the entire width of the combustion-chamber, pass directly into the exit, as shown by arrows l. The top and front of the ascending flue 1 being highly heated by the products of combustion, the air in suchflue becomes rarefied, and a draft is created.

The air in the space G, being also heated, seeks an outlet through the hot-air spaces around the oven, and passes out the flue 1 as shown by the arrows 2.

Thus it will be seen that the oven to my stove, instead of being heated by the products of combustion passing around the same, as heretofore, receives its heat from a constantlycirculating current of hot air.

The advantages of this manner of heating the ovens over that employed heretofore are, that a more uniform and more intense heat is produced, and a consequent saving of fuel, and all disagreeable efl'ects of the gases produced by the combustion of the fuel upon the air in the oven are done away with.

The corrugated plates on the bottom of the combustion-chamber and the back and sides of the fire-box present the maximum extent of surface to take up and transmit the heat, while the deflector spreads the products of combustion equally over the combustionchamber, which otherwise would tend to pass directly to the exit through a very small portion of the said combustion-chamber. The grate, being adapted to have the clinkers raked off the tire, can be kept very clean and bright, which effect is also assisted by the gratebars E Having thus fully described my stove, what I claim as new therein, and desire to secure by Letters Patent, is- 1 1. In a. cooking-stove, and in combination, the corrugated plates G G and G and the series of openings H, substantially as and for the purposes set forth. a

'2. In a cooking-stove, and in combination, the hot-air spaceG,-the rear hot-air spaces H H, the diverging plates 9 g, and the hotair space I, substantially as and for thepurposes set forth.

3. In a cooking stove, and in combination, the back plate D, the triangular opening 1 and the flue I, substantially as and for the purposes set forth.

4. In a cooking-stove, and in combination with the top plate thereof, the deflector L, placed in the main combustion-flue, and intermediate between the front pot-holes, substantially as and for the purposes set forth.

AARON P. RICH.

Signed in presence of- ALEX. SELKIRK, J AS. WOOLEY.

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