US1396623A - Combined gas and wood and coal range - Google Patents

Description

G. R. CHILD.

COMBWED GAS ANI woon AND COAL RANGE.

Patented Nov. 8, 192.1.

G. B. CHILD.

COMBINED GAS AND wooo AND COAL RANGE.

APPLICATION FILED NOV. II` 1919.

Patented Nm'. 8, 1921,

3 SHEET5- SHEET G. B. CHILD.

COMBINED GAS AND WOOD AND COAL RANGE.

APPLICATION FILED. Nov. II. I9I9.

1,396,623. Patented Nov. 8, 1921.

3 SHEETS-SHEET 3..

UNITED STATES PATENT OFFICE.

GUY B. CHILD, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STOVE COMPANY, OF

ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

COMBINED GAS AND WOOD AND COAL RANGE.

Specication oi' Letters Patent.

Patented Nov. 8, 1921.

-therein to the accompanying drawing.

This invention relates to improvements in combined gas and wood and coal ranges, and the primary object is to rovide a range construction which will enab c it t'o be used for top and oven cooking with either gas,

or solid fuel in the form of wood or coal, or'

the use of both at the same time.

I am aware that it is not broadly novel to provide a. range adapted to use gas, or solid fuel, but my invention is -for a particular and novel way of constructing the range to adapt it to the above-mentioned forms of fuel.

A further object of my present invention is to provide a mechanism which will prevent the gas burner being lighted until the oven door is opened, whereby accumulation of gas in a closed oven before lighting the burner is prevented, thereby avoiding a destructive explosion within a closed oven by lighting the burner when the oven is lled, or partially filled, with ignitible gas.

Another object of my present invention is to locate the gas burner in a chamber formed by a depressed part of the oven below its bottom, and to provide air-siipply passages below the burner.l and an exit flue at the to of the oven, the passage and flue bein simu t-aneously controlled cby connected campers for the passage and flue.

A further object of my present invention is to ro-vide a mechanism operatively connecte with the gas valve controlling member and dampers for controlling the inlet and exit of air to the oven, whereby when the gas valve is closed, the dampers are closed, and when the gas valve is open, the dampers are simultaneously opened, for the purpose of affording an air circulation to the gas burner and through the oven when the gas valve is opened and the burner lighted, and to close the said air-circulation through the oven when the gas burner is extin uished by the closing of the gas valve.

urther objects of my invention will appear from the following description of the drawings, 1n which- Figure l is a front elevation of a combined gas and solid fuel range embodying my iinprovements.

Fig. 2 is a vertical central sectional view taken transversely through my improved range.

Fig. 3 is a side elevation showing the mechanism for controlling the inlet and outlet dampers of the oven through the movement of the gas valve.

Fig. is a transverse vertical central sectional view of Fig. 3.

Fig. 5 is a detached top plan of the depressed bottom of the oven, showing the burner and air passages in dotted lines.

Fig. 6 is a vertical sectional view of Fig. 5, on the' line 6 6.

Fig. 7 is an enlarged elevation of the automatic door-operated latch coperating with the operating handle of the gas valve.

Fig. 8 is a top plan View of Fig. 7.

Fig. 9 is a sectional view of Fig. 7, on the line 9 9 looking in the direction indica-ted by arrow.

My improved range has a suitable housing A, in which is located a fire-pot B, for receiving solid fuel of any kind. A baking oven C is located within the housing A, and in the usual relative position to the fire-pot B. This housin y A has the usual flue l, extending aroun the oven C, and the usual chimney Hue 2, at the back of the housing A. The flue 1 is provided with the usual dam er 5, at its upper end b means of which w en 1t is open the draft rom the lire-pot B will flow directly into the chimney flue 2, for the purpose of increasing the draft, and when the damper 3 is closed, the draft is caused to circulate around the oven and to enter the chimney flue 2, at its lower end in the usualand well-known manner.

The oven C is provided with a lining 4,

in from the right hand side of the range, as clearly shown in Figs. 1 and 2, the burner being located below the .oven bottom 6, as shown.

In my improved construction, fresh air is supplied to the gas burner by providing a passage-way 8, extending toward the front of the range and performs the function of the usual deflector partition provided in solid fuel ranges, for directing the hot gases that pass down the side of the oven toward the front of the stove, and preventing them passing directly to the chimney flue outlet. This passage 8 has its outer'end 9 open and controlled by a suitable damper 10. The passage 8 extends forward approximately at the center of the range and is provided with a thimbled opening 11 communicating with the burner chamber D. In addition the chamber 8 is provided with laterally extending tubular arms 12, which have their ends provided wthup-turned thimbles 13, which pass through the bottom of the troughshaped member 4. Biy this construction fresh air is supplied under and to the burner at several points, thus distributing it in a way to furnish oxygen for the proper combustion of the as flowing from the burner.

The burner is of a form and its gas openings are so located, that the greater portion of the heat from the ame passes i directl up the side fines, while a Small pora valve 18, and

tion o it, is spread out underv the center of the bottom 6 of the oven. As here shown,

the burner 7 has cross-burner arms 7', at-

its opposite ends.

By reference to Fig. 2, it will be observed that the oven linin 4 is separated from the wall of the oven thus constituting open flues 14, which communicate at their lower ends with the burner chamber D, and at their upper ends with the oven. An outlet oven flue 15 is located at the front and top of the oven C, and this outlet flue is controlled by a suitable damper 16. The lower wall 17 of the flue 15 is perforated for the purpose of controlling the circulation of heated air and the products of combustion as they pass through the oven to the outlet 15 controlled by the damper 16. l

Gas is ysupplied to the burner 7, through a suitable gas supply pipe 17 controlled by a gas supply pipe 19 extends to the front of one of the right hand ends of the top of the range and is provided with a plurality of valves 20, for controlling the flow of gas to the open top gas burners (not shown), located at the top and the 4right hand side of the range, for the purpose of gas top cooking. This leaves the center and other side of the top of the range for top cooking from the solid fuel in the firepot B.

From. this description it will be understood that with my improved construction of a combined gas and solid fuel range, tle

or gas cooking, or for the combined solid fuel and gas cooking. It will also be understood 'that with my improved range solid fuel may be used for baking, while at the same time top cooking may be done with thev open gas burners. It will also be observed that there are no parts of the ran/ge to be moved in converting it from a solid fuel to a gas fuel cooking range, 'or vice versa. When the range is being used for gas cooking alone, the dampers 10 and 16 are open, as shown in Fig. 4, to provide a circulation of air therethrough, and when the range is being used for solid fuel cookin these dampers will preferably be close The dampers 10 and 16 are operatively c onnected with the gas valve 18, so that when the gas valve is opened, the dampers are open, and when the gas valve is closed, the dampers are closed, by a construction and for a purpose which Willbe presently ex plained.

Where solid fuel is used, it takes considera-ble time to start the fire and get it and the oven hot enough to cook. By the construction here disclosed, the solid fuel can be started and at the same time the gas burner started for the purpose of heating up the range for cooking, and while the solid fuel in the fire-pot is burning up. This enables the range to be 4quickly heated for cooking, as, for instance, in the morning. When the solid fuel has obtained sufficient heatfor cooking, then the gas may be cut off and the solid fuel used for theremainder of the day. Again, if the solid fuel fire has gotten low, and it is desired to quickly heat up the stove, this can be done by the gas burner and the gas heating will not interfere with the solid fuel heating, and vice versa.

Furthermore, the oven and the food to be cooked may be heated to the desired temperature and the gas burner turned oil', which will close the dampers 10 and 16, thus closing the oven with its retained heat to continue the cooking without the use of further gas.

The dampers 10 and 16 are simultaneously opened and-closed when the as valve 18 is opened and closed by the ollowing con struction:

A handle 21 has its'inner end 22 inter locking with the gas valve 18, and its handle carries an extension 23 having at its opposite end a crank arm 24. This arm 24 is connected with the damper 10 by means of a link 25 and crank arm 26, and is connected with the damper 16 by a link 27 and crank arm 28. With the parts in the position shown in Fig.' 3, the gas valve 18 is open and the burner lighted. With the gas valve open, the dampers 10 and 16 arev open to provide the necessary air circulation to the gas burner 7 and through the oven, as before described. When the gas valve 18 is closed and the gas burner 7 extinguished, the dampers 10 and 16 are simultaneously closed, thus preventing further circulation through the oven and retainin the heat within the oven for continuing te cooking if desired, without the use of further gas, as before described.

As a means for preventing the gas valve 18 from being opened and the gas burner lighted when the oven' door 29 is closed, I provide a latch E, which is controlled by the opening and closing of the oven-door 29, in the manner which I will now explain. This latch E comprises two members 30 and 31, pivoted on a suitable bolt 32. The member 30 extends toward the hinged edge of the oven-door 29, and its free end is adapted to be engaged and operated by a wedge-shaped lug 32', projecting from the hinged edge of the oven door 29. When the oven door is closed, the member 30 is in the elevated position shown in Figs. 7, 8 and 9. When the oven door is opened, the member 30 will fallv by gravity to the position shown in dotted lines Fig. 7 and is supported in its lowest position by a suitable stop 33. The pivoted member 31 extends toward the gas valve operating handle 21 and has its projecting free end 34 ,when in its lowered position in the path of travel of a lug 35 carried by the as valve operating handle 21. In this position the projecting end 34 of the member 31 and the lug 35, will prevent the gas valve handle 21 from being turned to open position. As clearly shown in Fig. 8, the pivoted ends of the members 30 and 31 overlap each other. As shown in Fig. 7, the pivoted end of the member 30 has a shoulder 36 and the pivoted end of the member 31, has a projecting lug 37 adapted to be engaged by the shoulder 36. By reason of this construction, when the oven door 29 is open and the member 30 falls to dotted position Fig. 7, the shoulder 36 engages the lug 37 and moves the member 31 up to the position shown in dotted lines, Fig. 7. With the oven door open and the parts of the latch E in the position shown in dotted llines Fig. 7, the gas valve handle here shown in oif position can be turned to open position, the burner then is lighted and the oven door closed. The closing of the oven door will lift the parts of the latch E to the position shown in solid lines Fig. 7 but the latch member 31 has an upward movement independent of the latch member 30, so that the gas valve handle 21 can be turned 'to closed position with the oven door closed, but it cannot be turned to open position when the oven door is closed without lifting manually the end 31 of the latch.

The object of this construction is, first, t0 require that the oven door must be open before the gas valve can be opened, and, secondly, it permits the gas valve to be closed, at the same time closing the dampers 10 and 16, while the oven door is closed, thus retaining the heat from the burner within the oven, or the purpose before stated.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. A cooking range of the character described, comprising an oven, a burner chamber below the oven and in communication with the oven, an air inlet passage in commun'ication with the burner chamber extending laterally thereto, the inlet passage having longitudinally extending supplemental passage connections communicating wit-h the ends of the burner chamber, an air outlet passage communicating with the oven, a chimney ue communlcating with the said oven outlet passage, a gas burner in the burner chamber, a fuel valve for the burner, dampers adapted to open and close the air inlet and the oven outlet fiue, and operative connections between the fuel valve and both of saidI dampers whereby the dampers are opened and closed by the opening of the fuel valve, for the purpose described.

2. A combined coal and gas range comprising an oven having a perforated bottom, an oven chamber below and completely embracing the entire oven bottom, a gas burner in said chamber, an air inlet passage to the burner chamber extending laterally thereto and provided with laterally extending supplemental passage connections communicating with the ends of the burner chamber, an air outlet passage communicating with the oven, a fuel valve for the burner, ldampers adapted to open and close the air inlet and the oven outlet flue, and operative connections between the fuel valve and both of said dampers whereby the dampers are opened and closed by the opening of the fuel valve, for the purpose described.

3 A cooking range of the character described, comprising a housing, an oven within the housing and separated therefrom to form a fiue passage and a fire-box chamber, a fire box in 'communication with the iiue passage, a perforated bottom for the oven, a burner chamber below the oven bottom, a burner within the said burner chamber, an air inlet passage communicating with the burner chamber and extending laterally thereto and communicating with an opening in the rear wall of the housing, an air outlet flue extending across the top of the oven and in communication with a chimney flue at the rear of the oven, and dampers arranged to simultaneously open and close the air inlet passage and the oven outlet Hue.

4. A cooking range comprising a housing,

an oven therein, a chimney flue, a gas valve for the oven, an oven Hue outlet commumeating with the chimney fide, a hlnoed oven door, a two part pivoted latch, the parts of the latch being in extended parallel relation with overlapping ends the oven door having a cam surface adapted to engage one part of the latch, the overlapplng ends of the two arts of the latch interlocking whereby t ey are moved together by the engagement of the oven door wlth one of the ends of the latch parts, and the gas valve of the oven having a projectlng portion locked by the opposite end of the other latch part when the oven door is closed, combined for the purpose descrlbed.

5. A cooking range of the character described, comprising an oven, a burner chamber below the oven bottom and in communication with the oven, an air inlet passage in communication with the burner chamber, extendin laterally thereto, the inlet passage havmg longitudinally extending supplemental passage connectlons communicat- 'lng with the ends of the burner chamber, an air outlet passage communicating with the oven, and a chimney flue communicating with the said oven outlet assage.

6. A cooking range of t e character described, comprxsing a housing, an oven within the housing and separated therefrom to form a flue passage, a irebox in communication with the iiue assage, a chimney ue in communication wlth said flue passage, a burner below the bottom of the oven, the oven bottom perforated, an air inlet passage communicating with the burner chamber and extending laterally thereto, supplemental air inlet passages in communication' with the burner chamber and the main air inlet passage, a flue outlet passage extending across the top of the oven and having ,communication at its rear end with the chimney iue, the parts combined for the purpose described.

In testimony whereof I hereunto aix my signature.

GUY B. CHILD.

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