US1717222A - Stove oven - Google Patents

Description

B. B. KAHN June 11, 1929.

STOVE OVEN Filed Jan. 18, 1926 Patented June 11, 1929.

' UNITED STATES, PATENIT OFFICE.

IBERTRAND B. KAHN, OF CINCINNATI, OHIO, ASSIGNOR TO THE ESTATE STOVE COM- PANY, 0F HAMILTON, OHIO, A CORPORATION OF OHIO.

STOVE OVEN.

Application filed January 18', 1926. Serial No. 82,048.

This invention relates to stoves and particularly to stoves having ovens.

One of the principal objects of the invention is to provide an improved oven construction.

Another object is to provide an improved double bottom construction for ovens.

Other objects will be apparent from the following description when taken in connection with accompanying drawing in which:

Fig. 1 is a somewhat diagrammatic view inthe nature ofa perspective with parts broken away, of a stove having an oven bottom embodying the present invention;

Fig. 2 is a fragmentary vertical sectional view, from front to back of the oven, on the line 2-2 of Fig. 1, parts being broken away for clearness in illustration; and

Fig. 3 is a fragmentary vertical sectional iew taken at right angles to the plane of The invention is hereinillustrated as embodied in a stove having an oven compartment 20 and a broiler compartment 21. The front wall of the stove is designated at'22 and is provided with a door-opening 23 for the oven compartment 20 and a door-opening 24 for the broiler compartment 21, the doors being omitted from the drawing for purposes of easier disclosure. The material of the front wall is bent or flanged inwardly about the door-openings 23 and'24, the inturned flanges thus formed between the two door-openings thus forming a channel 25. The side walls of the oven each comprise an outer wall portion 27 and an inner wall por-' tion or side. lining 28 which are spaced apart to provide flues 29. .The back wall is also of double-wall construction and comprises an outer back wall 31 and an inner back wall or lining 32which is spaced from the wall 31 to provide an air flue 33.

The partition between the oven compartment 20 and the broiler compartment 21, which partition is of double-walled construction and is herein referred to as the oven bottom, comprises a lower plate 35 and an upper plate 36 which are spaced apart to provide a flue for the passage of heated air. The lower plate 35 is provided at its front with an npwardly-bent marginal flange 37 which rests within the channel 25, and at its sides with upwardly-bent flanges 38 having horizontal or outwardly-bent portions 39 which are adapted to support in any suitable manner the side lining 28 of the-side walls. 1 The rearward portion of the lower plate 35 extends through an elongated opening 41 in the back lining 32 of the back wall and is bent downwardly to provide a flange 42 overlying the lower edge of the opening 41 and adapted to be secured to the back lining 32. The lower plate is thus supported at the front and rear edges.

The upper plate 36 of the oven bottom is formed at its front and sides with downwardly extending flanges 44 which rest upon the lower plate 35 and are adapted to support the upper plate at substantially the level of the flanges 39 and of the lower edge of the oven door-opening 23. The upper plate 36 is provided adjacent its front edge with a series of openings 45 through which communication is established between the oven chamber 20 and the air space or flue 46 which is formed between the upper and lower plates of the oven bottom. The rear edge of the upper plate 36 is formed with an upwardly-extending flange 47 which is adapted to lie against the back lining 32 of K the rear wall.

A series of burners 51 is disposed in the upper part of the broiler compartment 21 just below the lower plate 35 of the oven bottom, the arrangement being such that the flames from the burners broil or otherwise cook meats or other food which may be placed in the broiler compartment 21 and at the same time the burners heat the lower plate 35 of the oven bottom to a high temperature. The products of combustion or flue gases escape from the broiler compartment through elongated slots or openings 52 in the side linings 28 and pass upwardly through the flues or passages 29 in the side walls of the oven, as shown by the feathered arrows in Figs. 1, 2 and 3.

The heating of the lower plates 35 of the oven bottom sets up a circulation of fresh air, the air being taken into the stove through a series of openings 53 in the rear wall 31, passing upwardly through the flue 33, then forwardly over the heated lower plate 35 from whence it passes into the oven through the openings 45 adjacent the front door-opening. This circulation of air is indicated by the plain arrows in Figs. 1 and 2. It will be observed that a partition 54 arranged'just above the opening 41 serves to close ofl the upper part of the space between the inner and outer wall portions 32 and 31 of the rear wall, and to deflect the incoming air forwardly into the air passage 46 where it is heated as it passes over the heated plate 35. i

The present invention has important advantages over prior constructions in that'the upper plate 36 of the oven bottom may be readily removed for cleaning merely by inserting the fingers in the openings 45, raising the upper plate, and then drawing it forwardly through the door-opening 23. Preferably. the upper plate is enameled or otherwise treated to facilitate cleaning thereof. The separable or removable construction of the upper plate 36 with reference to the lower plate 37 presents another important advantage over prior double-bottom constructions, in which the upper and lower plates are rigidly secured together, since it has been found in such prior constructions that the uneven heating of the walls of the oven bottom causes I unequal warping and distortion of the plates.

parts of the stove.

The lower plate, for example, will be more highly heated than the upper plate and will therefore tend toexpand more, but since 1t is rigidly connected to the upper plate it will not only tend to warp itself but will tend to twist or bend the upper plate. plates may be permanently bent or warped, such bending or warping being particularly objectionable in'the upper plate because it prevents vessels in the oven compartment from setting evenly thereon and it interferes with the transfer of heat between the upper plate and the-vessel. Obviously, these disadvantages of prior constructions are entirely eliminated and an oven bottom is secured which is superior while in'use, capable of ready removal for cleaning or replacement, and which has a longer life.

While the form of apparatus herein described constitutes a preferred embodiment of theinvention, it is to be understood that the invention is not limited to this-precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which is defined in the. appended claims. p

What is claimed is: I

1. In a stove, an oven bottom comprising a lower imperforate flat plate having upwardly-extending marginal flanges, an, upper plate spaced from the lower plate to provide therebetween a space for heated air, and downwardly-extending marginal flanges carried by the upper plate and positioned within said upwardly extendingflanges of the lower plate for aligning and supporting the upper plate in spaced relation thereon, said upper plate being separable from the lower plate and readily removable without disturbing other 2. In a stove, an oven bottom comprising lower plate having upwardly andooutwardly extending flanges, and an upper plate adapt- As a result the r ed to be supported in spaced relation to the lower plate to provide therebetw een an air space, said upper plate having down-turned marginal flanges adapted to rest upon the lower plate and to support the upper plate substantially at the level of the outwardlying a lower plate having outwardly extending flanges, means within. said lower oven chamber for supporting said lower plate, and an inner side wall lining for said upper oven chamber supported upon said outwardly extending flanges. Y

4:. In a stove an oven portion having sid and back walls, a horizontal partition member dividing said oven space into upper and lower oven chainbers, said partition comprising a dished lower plate having outwardly extending flanges, means within said lower oven chamber .for supporting said lower plate, an inner side wall'lining for said upper oven chamber supported upon said outwardly extending flanges and a removable upper plate supported within the dished lower plate and substantially coextensive with the space within said lining walls to form a removable bottom for the upper oven chamber.

5. In a stove, an oven comprising front,

side and back walls, said front wall having inwardly extending flanges providing a dooropening therein, a double-walled bottom for the oven, said bottom comprising a lower plate disposed below the lower edge of the door-opening and connected with the walls A of the oven, and a removable upper plate spaced from the'lower plate to providean air space therebetween, said upper plate having an upturned flange abutting the back wall of the oven and having a downturned opening flange.

flange at the front thereof flush with the door 6. In a stove, an oven comprising front,

side and back walls, one of said walls havinga door opening therein, and one. of said walls having a fresh. air inlet therein, a double walled bottomfor the oven, said bottom comprising an imperforate lower plate disposed below the lower edge of the door opening and connected with the walls of the oven, and a readily removable upper plate substantially at the level of and flush with the lower edge of the door opening and spaced from the lower plate to provide a space therebetween, and

positioned with the space between the plates of the said oven in communication with the said fresh air inlet. and a burner positioned directly below said lower plate.

7. In a stove, an oven comprising front and side walls, said front wall having a door opening therein, and a rear double Wall forming an air passage and having a fresh air inlet therein, a double walled bottom for the oven, said bottom including a lower plate disposed below the lower edge of the door open- Y said freshair passage and said space between the upper and lower plates, said lower plate having a downturned marginal flange cooperating With the inner rear wall below said opening, and said upper plate having an upturned marginal flange cooperating with said inner rear wall above said opening.

8. In a stove, an oven comprising front, side and back walls, said front wall having a 'door opening therein, a double walled bottom for the oven, said bottom including a lower plate disposed below the lower edge of the door opening and having upwardly and outwardly extending side flanges, said outwardly extending flanges being at substantially the level of the lower edge of the-door opening,

and a removable upper plate'having downturned flanges resting upon said lower plate to support said plates in spaced relation to provide an air space therebetween, said upper plate being supported at substantially the level of and flush with the lower edge of said door opening and the edges of said outwardly extending side flanges, the rear of said upper plate being flush with the back wall of said oven.

9. In a stove, an oven having front, side and back walls, and a double bottom comprising a lower imperforate plate, and a readily detachable upper plate supported thereby and removable therefrom and from the oven to permit cleaning or the like, said upper plate being coextensive with the bounding surfaces of said parts to form a continuous oven bottom and having an openingtherein providing communication from the space between the plates to the interior of the oven and forming a finger opening for facilitating removal of the upper plate.

In testimony whereof I hereto aflix my sig- BERTRAND B. KAHN.

, nature.

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