US918823A - Heating-stove. - Google Patents

Description

R. GAHOONE. HEATING STOVE.

APPL-IG ATION'IILED DE(J.1 1, 1906.

918,823. Patented Apr. 20, 1909.

2 SHEETS-SHEET 1;

awe/whoa THE NORRIS PETERS ca WASHINGTON, n. c.

EDWIN R. CAHOONE, OF TROY, NEW YORK.

HEATING-STOVE Specification of Letters Patent.

. Patented April 20, 1909.

Application filed December 11, 1905. Serial No. 291,337.

To all whom it may concern:

Be it known that I, EDWIN R. CAHooNE, citizen of the United States, residing at Troy, in the county of Rensselaer and State'of New York, have invented new and useful Improvements in Heating-Stoves, of which the following is a specification.

This invention relates to improvements in heating stoves for burning bituminous fuel.

The object of the invention is to provide specific means for forming air heating chambers at the top and the bottom of the fire pot to distribute heated air to the fuel to promote combustion.

A further object of the invention is to arrange the parts whereby the whole structure may be cast in sections and assembled, producing an economical and effectual construction.

Other objects and advantages will be hereafter referred to and particularly pointed out in the claims.

In the drawings Figure 1 is a vertical section of my improved stove a part of the base being in elevation. Fig. 2 is a similar view of a slightly different form ofmy invention a part of the base being in elevation. Fig. 3 is a detail horizontal section 011 the line 33, Fig.2. Fig. 4, is a horizontal section on the line 44, Fig. 2. Fig. 5, is a detail sectional view of a different form of joint between the drum and the fire pot. Fig. 6 is a similar view of another form of joint. ,Fig. 7, is a detail perspective view of the stove top and the means for supporting the ornamental rmg. i H

1, represents a base, provided with. inwardly extending projections 2, on which are bolted or otherwise secured, supports 3, and resting on said supports is an annulus 4, provided with an upwardly extending flange 5. A grate 6, is mounted on the annulus, and is of the reciprocating dumping type, and is usually closed or substantially so when the fuel is burning. p

A fire pot 7, is supported on the upper edge of the base 1, and its lower portion is reduced and flts within the flange 5. I Thereduced portion of the fire pot is or may beformed with a series of depending fingers 9, andadjacent spaces 10, and above the fingers and spaced therefrom are openings 11, which communicate with a space 12, formed between the reduced end of the fire pot'and the upper part of the base 1. The flange 5, eX- tends into the. space 12 and is disposed .parts so that they may be cast.

.portion of the shield is perforated and spaced from the drum to form an air heating chamber 19, air being introduced thereto through ducts 20, located inside the drum and eXtend ing up to the stove top, where they communicate with a chamber 21, formed by a cover 22.

The construction described is adapted for use in a stove when the ordinary sheet metal drum is employed, but I find I can make a more economical structure and produce a less expensive stove by arranging the various struction is shown in Fig. 2. The drum 25, is cast and made in sections 26-26, and an ornamental band 27", is or may be formed at the bottom. In'this figure the shield is also made slightly different. It isprovided with a seat 28, to receive the upper end of a band 29, the lower portion of which fits into a seat 25 and is bolted to the fire pot 7 at 25. The advantage of a structure of this type is that the drum is not liable to rust and wear out quickly; furthermore the parts can be conveniently replaced.

A damper 29*, having arms 30, is supported on the top 16, and is adapted to control the admission of air to the ducts 20. The arms are formed with openings 31, and a handle 32, the latter passing through a slot in the cover 22. Keepers 33, on the stove top serve to guide and keep the damper in place.

In operation a fire is started in the fire pot, and air from the ash-pit passes into the space 12, and is heated, the airbeing drawn through the openings 11, and also through the spaces 10, by the draft, and distributed to the fuel.

It is to facilitate the distribution of air coming from the ash pit that I provide the ficient to promote combustion, an additional supply of air may be taken into the space through the openings 38, regulated by the Such a con-' fuel.

dam ers 39, air is thus taken in, preliminarily lieated, and divided and further, heated and introduced to the fire pot in a series of individual heated streams, attacking .the body of the fuel at different points. The exit flue 39, being located near the top of the stove the air currents are drawn through the body of the fuel and an incandescent mass is produced.

The air heating chamber formed by the shield 17, is located at such position relative to the air inlets at the bottom of the fire pot, as to accentuate the combustion when the air from said chamber is introduced to the Air entering the chamber 21,is slightly heated, and entersthe ducts 20, and as the latter are located within the zone of the products of combustion passing to the exit flue, obviously by the time the air reaches chamber 19, it is highly heated and is delivered to the fuel around the bottom of the shield and through the numerous perforations therein.

The various air currents introduced above the fuel meet and mingle with the rising gases and the grade of combustion is materially improved.

What I claim is 1. In a heating stove, the combination with a base, of a casing, a grate, a fire pot having a reduced lower end provided with fingers and adjacent spaces, the reduced por- .tion of the fire pot being spaced from the base and supported by the latter, a grate support; havin an upwardly extending flange extending in the space between the reduced portion of the fire pot and the base, means -lntroducing air to the space, and an exit flue and spaces, the reduced portion of the fire 45 pet being spaced from the base and supported by the latter, a grate support having an upwardly extending flange extending in-the space between the reduced portion of the fire pot and the base, means introducing air to the space, and an exit fine abovethe fire pot.

3. In a heating stove, the combination with a base, of a casing, a substantially closed grate, a fire pot formed with a reduced ower enc iavin nin s a a series 0 l j l l g ope g nd f slots to provide fingers below-the openings, said reduced end being spaced from thebase and supported by the latter, aflange extending upwardly into the space'iormed between the reduced end ofthe fire pot and the base and extending entirely around said fire pot, means for introducing air to the space at a point below the top of the flange, said air passing through the openings in the lower end of the'fire pot and the slots between the fingers, meansforintrodueing currents of air hanging to the fire pot near the top of the latter, and an exit fine near the top of the stove.

4. In a stove, the combination with a base, a cast fire-pot, a cast casing in sections and supported on the fire-pot, a grate, an over downwardly extending shield mounted within the firepot and forming with the wall tliereoi an open bottom air heating chamber, an air heating chamber at the top of the stove, duets located inside the casing and leading from the last mentioned air heating chamber to the air heating chamber adjacent the shield, and an exit flue near the top of the stove.

5. In a stove, the combination with a casing, a base, a grate a fire pot supportml by and having an extension extending within the base and spaced therefrom and lOl'llltd with a series of openings arranged in dill'erent planes at points below the top of the space formed between the extension and. the base. a flange extending from the grate into the space, means for introducing air to the space at a. point below the top of the flange, an overhanging shield extending into the the pot and spaced from the casing to form an air heating chamber, duets intioducing air to the latter chamber, and an exit llue near the. top or the stove.

6. In a stove, the combination with a cast casing formed with a seat, a support litting in the seat and extending downwardly therefrom a lire pot having a seat to receive the downwardly extending portion of the sup port, and a shield. mounted on the support and extending upwardly therefrom to abut against the casing.

7. In a stove, the combination with a. cast casing made in sections and. formed with an ornamental flange, an inwardly extending shield, a fire pot, a detachable ring intermediate the fire pot, and the cast casing, said ring extending upwardly beyond the lire pot, means securing the ring to the tire pot, the. portion of the ring extending beyond the fire pot supporting the casing and the shield.

S. In av stove, the combination with a base, fire pot, having a reduced portion l'ormed with openings spaced from the base, a grate having a flange extending up above the lower reduced end of the fire pot, means for introducing air to the space formed. between the base and the end oi the fire pot, a shield. at the upper end of the fire pot and spaced. therefrom, means 'for supplying heated air to said latter space, and an exit llue located above the shield.

9. In a stove, the combination with a casing, a base, a fire pot having a reduced lower end fitting within and spaced from the base and formed with a series of notches and. openings above the notches, a grate, a flange in the space between the reduced end or" the 'fire pot and the base, said. flange terminating at a point between the notches and the open Eli] lOU

ill)

ill?) ings, means for supplying air to thes ace, a

shield located at the upper end of the 1re pot and s aced therefrom, the inner lower end of said s 'eld being grooved to receive ashes to protect it against heat influence, an air heating chamber, ducts connecting the air heating chamber and the s ace adjacent the shield, and an exit flue ocated above the shield.

10. In a stove, the combination with a fire 0t, means for supplying heated air to the ower end of the fire pot, a shield at the upper end of the fire pot and spaced therefrom to form a chamber, said shield being formed in sections, and provided with inwardly tapering openings to introduce jets of air to the fire pot from the chamber formed between the shield and fire pot, an air heating chamber, ducts connecting the air heating chamber and the chamber formed adjacent the shield, and an exit flue located above the shield.

11. In a stove, the combination with a casing, a fire pot, a grate, an overhanging shield formed with o enings at the upper end of the fire pot, the oWer end of the shield being spaced from the fire pot to form a chamber which is in open communication with said fire pot, an air'heating chamber above the shield, ducts connecting the air heating chamber and the space adjacent the shield,

the air introduced to said space being divided, part passing directly downwardly to the fuel and part passing through the o enings to the side of the fuel, and an exit ue located above the shield.

12. In a stove, the combination with a casing formed of cast sections, a cast fire pot, a grate, means for introducing air at the bottom of the fire pot, an overhanging shield formed in sections and provided with openings the lower end of said shield being spaced from the fire pot to form a chamber which is in open communication with said fire pot,

means for supplying heated air to the space,

said air being divided, part assing downwardly toward the fuel, an part assin through the openings to the sides oft e fue and the exit flue located above the shield.

13. In a stove, the combination with a fire pot, a shield depending within the fire pot, said shield being enlarged at its lower end and provided with a groove to form a seat in which ashes accumulate to prevent the heat destroying said lower end. In testimony whereof I afiix my signature, in presence of two subscribing witnesses.

EDWIN R. CAHOONE.

Witnesses:

FRANK SHRANDER, WILLIAM S. HOPKINS.

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