US749304A - Range - Google Patents

Description

No. 749,304. PATENTBD JAN. 12, 1904.

\ LG. KRONVALL.

`RANGE.

APPLICATION FILED MAY 1B, 1903. N0 MODEL.

I?? Ven/orf Patented January 12, 1904.

' PATENT OFFICE.

KRONVALL, OF CHICAGO, ILLINOIS.

RANGE.

SPECIFICATION forming part of Letters PatentNo. 749,304, dated January 12, 1904.

Aminata; mea May 1s, 19.03.

.T all whom it 11d/Ly concern; y. i

Be it known that I, KARL G. KRoNvALL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, .have invented certain new and useful Improvements in Ranges, of which the following is a specification.,

This invention relates to improvements in cooking-ranges, and while it is more especially intended for large ranges, such as are used in hotels and restaurants, yet it is applicable to the smaller ones or those used in households; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter more fully set forth and specic- Vally claimed.

In large ranges, as well as in smaller ones,

-as heretofore made the top plates are caused to to escape between `their edges and the edges i `of the supporting plate or top of the range, so

that new plates are frequently required.

In ranges of the general or well-known construction the combustion of the fuel is imperfect, for the reason the oxygen in the air 1s consumed in the fire-box or as it enters the same, thus allowing large quantities of the fuel to pass out through the smoke-flue in the form of unconsumed particlesiof carbon.

One of themain objects, therefore, of my, invention isto furnish a range which shall be `so constructed that the tendency of the top plates to buckle or warp will be reduced to a minimum, thus rendering the range more durable.

Another object of the invention is toafford means for automatically supplying fresh air and oxygen to the combustion-chambers at the rear ofthe fire-box, thus causing more perfect combustion of the fuel. j

A still further object of the invention is to so Vconstruct the range that the oven will be subjected to heat on all of its sides but one,

Serial No. 157,579. (No model.)

thereby attaining a-uniform degree of heat at any point in the oven.

In order to enable others skilled in the art to which my invention pertains to make and 4use the same, I will now proceed to describe it, referring to the accompanying drawings, in whichn Figure 1 is a perspective view of a range embodying my invention, showing the door to the oven removed and illustrating the bottom and one of the side walls thereof broken away to illustrate the passages or ways for the heat and smoke. Fig. 2 is a longitudinal sectional view, partly in elevation, taken on line 2 2 of Fig. 3 looking in the direction indicated by the arrows. Fig. 3 is a cross-sectional view taken on line 3 3 of Fig. 2 looking in the direction indicated by the arrows. Fig. 4 is a similar view taken on line 4 4 of Fig. 2 looking in the direction indicated by the arrows; and Fig. 5 is a plan sectional view of a portion of the outer casing and a part of the oven, showing the heat-deflectors.

Like numerals of reference refer to corresponding parts throughout the different views of the drawings.

The numeral 10 represents the outer casing, which is preferably rectangular, as shown, and has secured on its upper surface a top 11, which extends over the back of the casing 10, Aas shown in Fig. 1, and is provided with an outlet-pipe 12, which communicates with the stovepipc or flue (not shown) and the interior or cavity of the casing. Located within the casing 10 and secured at its front edges to the front wall13 of the casing is the rectangularshaped oven 14, which is so situated that all of its walls, aswell as its top and bottom, except its front portion, are at a distance from the casing, so that the heat may pass therearound. Located horizontally below the bottom 15 of the oven is a partition 16, which is secured to the casing and to the inner surface of the wall 17 of the oven adjacent to the firebox 18, in which the `ordinary grate and reback may be located in the well-known or any suitable manner. Secured obliquely on the partition 16 and extending from the rear wall of the casing 10 to about the middle of the bottom of the oven and resting against the IOO lower surface of said bottom is a deiiector 19,

which will cause the heated currents as they pass over the topyand end of the oven opposite theire-boxtopursue the course indicated by the arrows in Fig. 5, thus subjecting the entire bottom of the oven to the action of Y the heat of said currents. ,Located between "the rear wall Vof thecasing'and the rear wall of the oven"is"anotlier` deiiector 21, which extends in an inclined position from near the lower portion of Vthe wall 17 of the oven to near the top thereof, as is clearly shown by dotted lines in Fig. 2 of the drawings, in which figure it willl be observed that said deiiector lies diagonally below the outlet 12, which leads to the flue;A Located on the middle of the top 2 0 of the oven and extending from the re-box orcompartment 18 to the end of the casing'opposite the same is a conduit 22,which may be made of any suitable material and has in each of its sides near its end adjacent to the lsage 'of fresh air.

ire-box a vdischarge-opening 23 Afor the pasoppo'site the ire-box is provided with an inletlopening 24, which opening-may be located onthe upper surface of the conduit, as shown in Fig. 2, and register with 'an opening 25 in the' topf11 ofthe casing, as shown in Fig. 2 of the drawings, or it may be located in the end of the conduit, as shown at26 in Fig. 4

of the drawings. The end of the conduit 22 i 'adjacent to the re-box 18 ispreferably provided .with a detachable plate 27, which-.will

protect the conduit from the intense heat of the fire and which maybe renewed when de-y -stroyed by the heat. f is provided-above the oven and fire-box with The top 11 of ltlie range a rectangular opening 28,--in which are located sectional- plates 29 and 30, 'the latter of which may beprovided with circular openings 31 to receive a removable lid 32,-/as usual.f *The` outerfedgesofcsaid sectionall'platesjrest on ledges 33 at the edges of the "o1i ening` 28, and

the inner edges -of said platesfreston the top of theV conduit 22, asl shown" in Fig. 3`of the drawings.

. 'From` the foregoing' and by reference to the drawings it will be readilyseen and clearly -understood thatas the kheat passes from the fire box` or compartment 18 it will travel over the top 20 of theoven'and on each side of the conduit 22,9111'whichvvoperation fresh air and I oxygen ,will bei-supplied to the iiames, thus creating more'fperfect combustion. From the channellbetweensthe top of the range and the l topv oftlie oven the heated currents will pass 'downwardly between the walls of the oven andthe casing at the opposite end of the range from theii're-box, from which channel they will vpass' under the bottom 15 of the oven, in

which operation they will strike the deflector I '19, thus causing them to pass toward the front of the casing, from whence their course will be changed toward the rear thereof by reason- The end of the conduit 22 thereby be rendered more durable and less liable to warp or buckle.

Having thus fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-y 1. A range comprising -a casing having an outlet for the smoke and gases and an openying in its top, of an oven located in the casing at a'distance'from itswall as Well as-its top l and bottom, a conduit extending from the fire,- box between the tops ofthe oven and casing and having openmgs near its ends, a series of plates located inthe opening of the casing and suitably supported thereon at their vouter edges, their inner edges resting on and being supported by vthe conduit, a deiiector extending obliquely and forwardly from the rear wall of the casing between the bottoms of the oven and casing, and another deflector located in an inclined position between the casing and the rear wall of the oven, substantially as described.

2.- The combination with the casing having in one of its ends a fire-box and provided with an outlet for the smoke and gases, of an oven Alocated in the casing at a distance. from its lwalls as well as its top and bottom, a conduit extending from the re-box between the tops of the oven and casing and having openings near its ends, a deflector extending obliquely and forwardly from the rear wall of' the casing between the bottoms of the oven and casing, and another deflector located in an in` 'clined position between the casing and the rear wall of the oven, substantially as described.

3. The combination with the casing having an outlet for the smoke andlgases, of an oven located therein so that it will bef'at a distance from all of the wallsfexcept one, as well as from the top and bottom of the casing, a delector extendingA obliquely' and forwardly from the rear wall of the casing between its bottom and the bottom-of the oven, and another deiiector located'in an kinclined position between thecasingand the rear wall of thel oven and extending from near the bottom of the oven to near its "top, substantially as described; l p

. KARL e. KRoNvALL.

Witnesses: i i. j CHAs.` C. TILLMAN,

A. Grus'rAFsoN.`

IOO

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