US1387453A - stove - Google Patents

Description

H. A. COLE.

V STOVE. APPLICATION FILED JAN- 5|1920- Patentd Aug. 16,1921.

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H. A. COLE.

STOVE. APPLICATION FILED IAN- 5,1920.

Patented Aug. 16

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HUGH A. cons, or CHICAGO, ILLINOIS,.ASSIGNOR T0 COLE MANUFACTURING COM- PANY; or CHIOAG LLINOIS, A CORPORATION.

STOVE.

' Specification of Letters Patent. Patent d A g 16 1921 Application filed January @1920. Seria1No. 349,515.

To all whom it. may concern;

Be it known that I, HUGH A. COLE, a citizen of the United States, and residing in the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Stoves, of which I declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention has relation more particularly to cookingstoves or ranges such as are ordinarily used for domestic purposes, though features of the invention'are susceptible of wider application. The invention consists in the features of novelty hereinafter described, illustrated in the accompanying drawings and particularly pointed out in the claims at the end of this specification.

Figure 1 is a view in central verticalsection through a stove or range embodying my invention;

Fig. 2 is a view in horizontal section, this view being taken immediatelybeneath the top of I the stove; I

Fig. 3'is a detail view in side elevation and Fig. 4c is a plan view of the hot blast pipe and the top support carried thereby;

Fig. 5 is a detail plan view of the top supporting plate for the fire pot;'

Fig. 6 is a view in section on line 6-6 of Fig. 5;

Fig. supporting plate for the'fire pot;

Fig. 8 is a view in cross-section on line 8+8 of Fig. 7

Fig. 9 is a detail plan view of the fire pot;

portion arranged adj acentthe fire pot D, an air chamber Esurrounding the fire pot D and extending between .theupper part of;

the oven A and the fire pot. D.) Inthe upper part of the oven opposite the fire-pot D is provided a port orlports a through which gases from the oven A may pass into the 7 is a detail planview of the lower Fig. 10 is a view incross-sectionon line 10-10 of F1g. 9. I

rod a the valve a can be shifted so as to partially or completely close the port or ports or adjacent the top of the oven A and thus cut off communication between the top of the oven and the air chamber E. The ash p1t C is provided with the usual door C furnished with an ordinary draft valve.

The air chamber E is provided at its.

front with an admission port or ports e adapted to be controlled by a sliding plate valve 6 that may be furnished with a projection or hand piece 6 whereby the valve e may be shifted. The valve 6 issupported by the guides e and 6 located, respectively, at the bottom and top of the valve 6. The

. valves a and e are preferably of ordinary grid "construction and need not, therefore,

be more fully described.

The top of the stove is shown asprovided with the usual key plate or lid plate B this plate 13 being furnished with holes as usual to receive the stove lids. In order toprevent the warping of the key plate B and parts of the stove top above the 001R- bustion chamber and subjected to the intense heat at such points, I have provided the hot blast pipe F, with a ke cover support f andwith a plate or racket f adapted to be bolted as at f to the top of the oven A, these parts being formed preferably as an integral casting. As shown, the support fis formed with a notch f in its upper end to receive flanges projecting downwardly from the key plate and the adjacent part of the stove top. I

Beneath the combustion chamber G is placedthe plate H that is formed with the flanges 'h and h adapted to be bolted to the front plate of thestove and to the top of the oven A, respectively, as shown in Fig. 1. The plate H is also. formed with an opening k adapted to receive the fire pot D and with'an opening h adapted to coincide with the lower end of the hot blast pipe F. The fire pot D comprises a unitary metal body that tapers from top to bottom and is formed at its top with an outwardly projecting flange (Z adapted to rest upon the sup porting plate H, and this flange d is cut away as at cl so as to permit the passage of air from the air chamber E to the hot blast pipe F, as clearly shown in Fig. l of the drawings.

Beneath the fire pot D extends the bottom plate K of the air chamber E, thisplate K being formed preferably with the depending flanges whereby it is bolted to the front wall of the stove and to the wall of the oven A, as shown in Fig. l of'the drawings. The bottom plate K and the top plate H, respectively, cut off communication of the air chamber E with the ash pit C and combustion chamber Gr, and the bottom plate K serves also as a support for the lower endofthe fire pot D. The depending end flanges of the bottom plate K are shown as formed with holes 7c to receive the rods that support the grate bars L.

While I have described what I regard as the preferred embodiment of my invention, it will be understood that the details of construction above set out may be varied Without departing from the spirit of the invention, and. that features of the invention may be employed without its adoption as an entirety. Thus, for example, while I have shown a single hot blast pipe F, it is obvious that two or more of such pipes may be employed.

By providing an air chamber E around the fire pot D and between the combustion chamber G and the ash pit C, the air within the chamber E serves to cool the fire pot D and prevent it from rapidly burning out. So, also, the air within the chamber E serves to prevent the excess heating of the upper part of the oven and insure a more uniform distribution of heat within the oven. So, also, the opening between the upper portion of the oven and the air chamber also serves to permit the escape of gases from the oven into the combustion chamber through the hot blast pipe F. W'hen air is admitted to the chamber E through the ports a or ports 0 it will become highly preheated. before it passes upward through the hot blast pipe F into the combustion chamber G, and hence will be in condition to insure the most eifective combustion of the gases within the chamber G. Preferably, the hot blast pipe G is formed as a curved pipe, its upper end eX- tending into the combustion chamber G above the fire pot D. The air passing up through the pipe F also" tends to modify the temperature of the pipe F and of the support f, and hence prolongs the life of these parts. The fire pot D canbe readily removed from the plate H whenever replacement. or repairs are required.

The air chamber E and pipe F are designed to supply highly heated air to the combustion chamber and chiefly for economizing fuel when soft coal is employed. When first fed to the fire-pot large quantit ies of gases are driven off, and for effective combustion of the gases highly heated air must be intimately mixed therewith. The pipe F is open-ended and un-' obstructed, that is to say, it has substantially the same cross-section throughout, and itvextends inwardly over the fire-pot and has a down-turned outlet end portion so that it operates in a nozzle-like fashion trol the air admission openings of the air chamber E the blast of air through the pipe can; be regulated as desired or com-- pletely cut off, as for example, when the coal is thoroughly coked.

Having thus described my invention, what I claim as new and desire toisecure by Letters Patent is 1. In a stove, the COIIlblIlflblOIl with a casing and an oven therein, of a vertical wall on one side of said oven, upper and lower horizontal supporting plates fitting between and securedto said wall and the front wall of said casing and forming therewith a coinbusti'on chamber and an ash pit, said plates having openings therein, and a fire-pot body ioo taperiii'g' from top tobottonr, having flanged upper and lower edges for engaging the edges of the openings of said supporting plates and ad'apted to be inserted and removed as a unit through the opening in said upper plate, substantially as described.

2. In a stove, the combination with a casing, having an ash pit, a combustion chamber and an intermediate air chamber, of a horizontal supporting plate at the" upper portion of said air chamber having an opening therein, a fire-pot removably fitting within said opening and extending into said air chamber and'having a flangeat its upper end overlapping said supporting plate,;said plate and said flange being cut away to form a discharge port for heated air from said air chamber, and a hot blast pipe'reinovably mounted above said flange, said pipe being in communication with said port and extending forwardly laterally over the fire-pot;

3. In a stove, the combination with a cas ing, having a combustion chamber, an ash pit and an intermediate air chamber, a horiv zontal supporting plate above said air chamber having an openingt-lie'reiir, a fi-re-potre-' I movably inserted through said opening and extending into said air chamber" and having a flange overlapping said supporting plate, said plate and flange being cut away at the rear side of the fire-pot to form a discharge port for heated air from said air chamber, and a hot blast pipe removably mounted in position above said flange and connecting said port to said combustion chamber, said pipe having a supporting part for bracing the top of the stove casing.

4. In a stove, the combination of a casing having a fire-box surrounded by an air chamber, an oven at one side of the air chamber, a duct member leading overhead from the top of the air chamber and having a discharge outlet directed downwardly toward the opening in the upper end of the fire-box, and selectively operable valve-controlled ports leading respectively from the oven and exterior of the easing into said air chamber.

5. In a stove, the combination of a casing having a fire-box surrounded by an air chamber, an oven at the side of and separated from the air chamber by a vertical partition, a duct member leading overhead from the top of the air chamber and having a discharge outlet directed downwardly toward the opening in the upper end of the fire-box, an opening in the aforesaid partition affording communication from the oven to the air chamber, an opening in the wall of the casing affording"- communication from the exterior thereof to the air chamber, a

valve for controlling each opening, and

means at the exterior of the casing for selectively operating said valves.

6. In a stove, the combination of a casing having an'oven and aheating compartment separated by a vertical partition, an uprightflue at the side of the casing, a draft passageway extending from the upper end of the heating compartment around the oven and having openings above and below the oven leading into the flue, a pair of vertically spaced apertured plates in the heating cham-- tively from the oven and from the exterior of the easing into said air space, and valves selectively operable from the exterior of the casing for controlling said openings.

7. In a stove, the combination with the ash pit and combustion chamber, of an air chamber arranged between the ash pit and combustion chamber, a fire pot arranged within said air chamber, a valve for controlling the admission of air to said air chamber, a port at the top of said air chamber, and a hot blast pipe communicating with said port, extending over said fire pot and having a downturned discharge outlet for directing heated air downwardly into the upper central portion of said fire-pot.

8. In a stove, the combination of a casing havinga combustion chamber and an ash pit therein, a fire-pot arranged between said ash pit and combustion chamber, an air chamber surrounding said fire-pot and closed from communication with said ash pit, a valve for controllingthe admission of air to said air chamber, and a hot blast pipe having unobstructed inlet and outlet end portions communicating respectively with said air and combustion chambers, the discharge outlet end of said pipe being down turned and arranged above the central portion of said fire-pot. 1

9. In a stove, the combination of a firepot having a combustion chamber thereabove, an oven separated from the firepot by an air chamber which is adapted to be heated by said fire-pot, and a hot blast pipe arranged in said combustion chamber communicating with said air chamber and having a down turned discharge outlet portion extending over said fire-pot and adapted to direct heated air into the upper central portion thereof.

10. In a stove, the combination with acasing having a combustion chamber, an ash pit, an intermediate fire-pot, an oven and an air chamber closed from communication with said ash pit and arranged at the side of said fire-pot between the oven and firepot so as to be heated by the latter, a valve for controlling the admission of air to said air chamber,and a hot blast pipe leading from the upper portion of said air chamber and extending over said fire-pot and having a down turned discharge outlet adapted to direct heated air downwardly into the upper central portion of said fireot.

HU H A. COLE.

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