US1393129A - Stove and range - Google Patents

Description

E'. 0. HOWLE AND 1. E. LEONARD.

STOVE AND RANGE. APPLICATION FILED JULY 3, 1920.

Patented Oct. 11, 1921.

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APPLICATION FILED JULY 3, 1920.

1,393,129, Patented Oct. 11, 1921.

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STOVE AND BAIEGE.

Application filed July 3.

To aZZ 107mm it may concern:

Be it known that we, Ennnsr O; l-IowLn, a citizen of the United States, residing at Nashville, in the county of Davidson, State of Tennessee, and 'JOSEPI-I E. LEONARD, a citizen of the United States, residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented certain new and useful Improvements in Stoves and Ranges, of which the following is a specification.

This invention relates'to stoves and ranges, more particularly those of the elevated oven type, and the object of the invention is to provide for the use at will, and without changing adjustments or shifting apparatus, of either solid or gaseous fuel for combustion, and forthe heating, more especially, of the oven.

The invention is fully disclosed in the description and claims following, reference beinghad to the accompanying drawings, in which Figure l is a central section from front to back, in a vertical plane of the bottom parts of an oven containing our improvements. Fig. 2 is a similar section, but in a plane transverse to that indicated in Fig. 1. Fig. 3 is a plan view of the parts below the line 3--3 of Fig. 2 with the bathe-plate removed. Fig. i is a plan view of the front side of the battle-plate. F'g. 5 is a fragmentary front elevation of a range including this invention, showing the oven, top portion of the range proper, and connecting flue.

In the drawing, the numeral 5 denotes the.

outer shell or casing, and 6 the inner cham ber of an oven. The outer chamber conimunicates by a flue (not shown) which at its upper end connects with the collar '7, and at the lower end is supposed to connect with a similar collar on the stove, not shown. The products of combustion from the stove or range, which is adapted to burn solid fuel, pass through the flue and the spaces between the outer and inner chambers of the oven, and thence up the chimney through a similar collar, not shown, at the top of the oven as indicated by the black-faced arrows. lfhe oven in this respect is of familiar construction, and need not be specifically described.

Where gas be conveniently led to the stove it is found to be very desirable to arrange the stove for the use of both fuels,

Specification of Letters Patent.

Patented Get. 11, 1921.

Serial No. 393320.

solid fuel for the more continuous and heavy service, as in winter, and gas for the lighter and more intermittent service. Our improvement embodies such a construction as applied to an oven, and the same will now be described.

Heferrin to Fi g. 2, it will be seen that the bottom of the inner chamber is convened from side to side, the inclined wings 8 being preferably joined to a central, trough-like casting 9, which crosses the flue above mentioned, and serves to deflect the products of combustion to each side of the oven as in licated. A little abovethis bottom is mounted a baffle-plate 10, which forms the'working bottom of the ven. This is preferably made of sheet-iron, but is reinforced by a casting 11, centrally concaved at 12, and with upwardly inclined sides fastened to the main sheet. The bathe-plate is considerably narrower than the inner chamber of the oven, and is supported principally at the front by an upward extension 14 of the oven bottom, and at the back and corners by inwardly extending lugs or flanges 15. This leaves openings at 16 for the products of gaseous combustion to pass through and directly into the oven. The bathe-plate is also preferably perforated 17 for convenience in lighting the gas. Gutlets at'18 at the rear, and near the bottom of the oven permit the outflow of the hot air, after it has flowed to the top of the oven, and thence down the back side thereof. 7

Directly under the hollow of the baffleplate is mounted a tubular gas-burner 19, its front end resting on the inclined extension 14;, and its rear end on a prop 20. The burner is preferably made elliptical in cross section, and is pierced at the sides with a multitude of small holes 21 to serve as gasjets. Near the rear end an elbow 22 depends through a hole 23 in the casting 9, the hole being enlarged adjacent to the elbow, so as to supply air for combustion to the burner. A similar hole 24 is provided near the other end of the burner. The elbow of the burner connects with a service-pipe 25.

The course of the air is indicated by feathered arrows, and that of the products of gaseous combustion, by thin, unfeathered arrows.

The construction admits of the use of either fuel at will, and without the shifting of a damper, or any other part of the stove or oven in changing from one kind of fuel to the other. The openings 1n the oven for the circulation of the gaseous heat do not in the least prevent or retard the proper heating of the oven, while the location of the burner, inside the oven, but screened from its contents by the bathe-plate, tends to give it very rapid action in heating, and the highest efiiciency in the maintenance of the temperature.

It is to be noted that the air inlets which support the combustion of gas have no communication with the passages for the products of solid fuel combustion, consequently there is no leakage of smoke,'norany tendency on their part to retard the regular draft of thestove.

Having thus described our invention, we claim:

1. In a range having an elevated oven connecting with the range combustion cham' ber by a vertical flue, an oven having an outer chamber communicating at the bottom with said flue, and an inner chamber spaced away therefrom at the bottom and sides, a

double bottom for the inner chamber, the

lower one inclining upwardly from a deeper central depression crossing said flue from front to back of the oven, a long gas-burner set relatively central to said depression, and a superimposed battle-plate adapted to spread the gas flame toward the sides of the oven parallel with the burner, the upper bottom having openings for the products of gaseous combustion. Y

2. In a range. having an elevated oven connecting substantially centrally with the range combustion-chamber by a vertical flue, and having an outer chamber and an inner chamber spaced away therefrom at the bottom and sides, a double bottom for said inner chamber, comprising a Hat working bottom, pierced to admit gaseous products of combustion, a baflle-plate thereunder extending from front to back and inclined upwardly toward its other sides, a long, tubular gas-burner mounted centrally thereunder, and a lower bottom below said burner, having upwardly inclined sides springing from a deeper middle depression extending across said fiue,and provided with air inlets closed to. the products of combustion from the range below. I Y

In a range having an elevated oven composed of outer" and inner chambers spaced apart at bottom and sides for the passage of products combustion from the range, a flue extending vertically from the rangeto the oven bottom, a double bottom for the inner chamber of theoven, the lower one having a middle depression extending from front to back of the oven, with upwardly inclined wings springing therefrom.

air inlets therefor closed to said products of combustion, a gas-burner extending lengtlr wise of said depression, with a connecting elbow through one of said inlets, a super imposed inner bottom for the oven \l h 1nlets for gaseousproducts of combustion, and outlets therefor isolated from any other products of combustion.

An. oven for ranges, comprising an outer and an inner chamber, spaced apart for the passage of products or combustion the inner chamber having a double bottom, of which the lower has a middle trough or depression, with sides upwardly inclining therefrom, a tubular gas-burner mounted lengthwise of the trough, and a flame-spreading battle-plate over the burner and below the upper bottom. 7

In testimony whereof we aliis: our signatures in presence of two witnesses.

ERNEST O. HOWLE. JGSEPH E. LEONARD. v l itnesses F. WV. Anirsrnoivo, .J. M. ST. JOHN.

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