US881962A - Cooking stove or range. - Google Patents

Description

I No. 881,962. PAVTENTED MAR. 17, 1908 ELSGOTT.

COOKING STOVE 0R RANGE.

APPLICATION FILED FEB. 25, 1907.

2 SHEETSSEEET 1.

No; v 5 0 No. 881,962. PATENTBD MAR. 17, 1908,

' ELSGOTT.

COOKING STOVE 0R RANGE.

APPLICATION FILED FEB 25, 1907.

- 2 SHEETS-BHEET Z.

l B il UNITED STATES PATENT OFFICE.

ELWOOD SCOTT, OF MARION, INDIANA, ASSIGNOR OF ONE-HALF TO ROBERT RIDGWAY, OF

AMBO Y, INDIANA.

COOKING STOVE OR RANGE.

To all whom it may concern:

Be it known that I, ELwooD Seo'rT, a citizen of the United States, residing in the city of Marion, in the county of Grant and State of Indiana, have invented certain new and useful Improvements in Cooking Stoves or Ranges; and I do hereby declare the following to be a full, clear, and exact description of the invention, being such as will en able others skilled in the art to which it appertains to make and use the same.

My present invention relates, generally speaking, to cooking stoves or ranges, and particularly to means for heating the oven and maintaining it at a uniform degree of temperature with a minimum amount of fuel, in which heat may be concentrated where desired without abnormally heating other parts of the stove or range, and with a minimum of radiation into the room in which the stove or range is located.

As above intimated the invention has reference more particularly to the means for heating oven, the object being to provide an oven having a maximum of heating surface therein with dimensions, and also to provide means for directing the heat in a plurality of routes, in order to meet various conditions and requirements.

The preferred manner by which I accomplish the objects of my invention is shown most clearly in the accompanying two sheets of drawings, in which Figure 1 shows in perspective a portion of stove or range, partly in section, with the top removed in order to give an introspective View of some of the essentials of this invention. Fig. 2 is a top plan view of the same. Fig. 3 is a longitudinal sectional view as taken on the line a'ac of Fig. 2. And Fi 4 is a detail sectional view as taken on the Tine 2-z of Fig. 2.

Similar indicia denote like parts throughout the several views.

The details of the invention are substantially as follows:

The letter A designates the oven space. B designates the fuel and combustion chamber. The letter C denotes the top of the stove, and the letter D denotes the bottom of the stove. The letter E denotes the base, the letter F the front wall of the oven, the letter G denotes the rear wall of the oven, and H denotes the top-plate of the oven. And the letter I denotes the escape pipe.

Specification of Letters Patent.

Application filed February 25, 1907.

Patented March 17, 1908.

Serial No. 359,133.

All of said parts are of common construction, and may be variously changed in order to meet certain conditions and requirements.

The essential requisites of my invention are the fines, which are divided into three sets 1. the front vertical lines 1., the horizontal bottom lines 2, and the rear vertical firms 3. Said 'flues are, preferably, trapezium shaped in cross section. The superficial extent of said flues, together with the top plate H, form the heating surface of the oven. The upper ends of the lines 1 are located on a level with the top-plate H and with the upper edge of the back of the combustion chamber B, from which point they extend downward along the front wall F, with their lower ends all opening into a common chamber 4, which latter extends laterally across the lower portion of the stove, its bottom being on a line with the bottom D.

The bottom lines 2' have their forward ends opening into the rear wall of the chamber l, from which they extend to the rear, where each one is joined to one of the lines 3, which latter extend upward along the rear wall G with their upper ends on a level with the top-plate H. it of course should be understood that at their upper ends the flues 1 and 3 are fitted in a horizontal plate, as the plate H, the interiors of said Ilues only being exposed at their upper ends, substantially as indicated in the drawings.

In practice the front wall F may be integral with the lines 1, and the bottom D may be integral with the fines 2, and likewise the wall G may be integral with the lines 3, or said flues may each be separate from each other and from said parts F, D and G.

The numeral 5 denotes a partition extending up from the plant H to the top 0 of the stove, same being located immediately forward of the upper ends of the lines 3. Said partition should have three oblong apertures therethrough each to be closed by a damper, although the center aperture may be omitted if desired. If employed, then the center aperture is adapted to be closed by a damper 6, which is adapted to be operated from the side of the stove as shown. The two side apertures of said partition are adapted to be closed by a separate damper, 7 and 8, which swing horizontally and are operable from the top of the stove as shown. Said dampers 7 and 8 are pivoted at the parts which divide said apertures in the partition 5, and they are adapted to swing back at right angles to said partition in order to connect with the rear wall G, thereby dividing the space which is formed by the partition 5, the upper ends of the flues 3, the rear wall G, and the top of the stove G, into three parts, as is indicated in Fig. 1. The escape pipe I leads from the center portion of the chamber just described.

Located immediately in the rear of the upper end of the fiues 1 is a damper 9, operable from the side of the stove. Said damper 9 is adapted to close the space between the topplate H and the top C of the stove, or to be turned back, all substantially as indicated.

The operation of my stove is substantially as follows: If a fire be maintained in the fuel chamber it is evident that various movements of the draft may be directed therefrom by means of said dampers.-Suppose for instance, (a) that the damper 9 be turned back, and the damper 6 be turned forward, it is evident that the draft will pass back over the plate H, through the center aperture of the partition 5, and then up the pipe I, thus making a direct draft, as is usually required in starting a fire. (1)) Now if the damper 9 be closed (preferably at this operation the dampers 6, 7 and 8 should be positioned to close all of the apertures in the partition 5 that the draft from the fuel chamber will be directed downward through the flues 1, into the chamber 4, thence through the flues 2, up through the fiues 3, and into the space back of the partition 5, and from there it may escape up the pipe I. (c) If the dampers 7 and 8 be turned back, as in Fig. 1, the damper 6 closed, and the damper 9 opened, another movement of the draft will be accomplished, that is to say,the draft will pass back over the plate H, through the side apertures of the partition 5, and by reason of the position of the dampers 7 and 8 the draft will pass down through the four outside fiues 3, forward through the four outside flues 2, then into the chamber 4 where it will turn and pass to the rear through the four center fiues 2, then up the four center fiues 3, into the space between the partition 5, the two dampers 7 and 8, and the rear wall G, and the top C, from whence it will be free to escape through the pipe I.

As explanatory of the terms used in the following claims, it is pointed out that there may be regarded as being two sets of dam pers below the stove top, the damper 6 comprising one set and the dampers 7 and 8 the other. 6 is closed, it partially cuts off communication between the space between the oven and stove top on the one hand and the top of the flues 3 on the other, and that, when the dampers 7, 8 occupy positions in the same plane with damper 6, they cooperate with the latter to cut off such communication en- It will be seen that, when the damper tirely, while, when positioned as in Fig. 1, and the damper 6 closed, they cooperate therewith to cut off communication between said space on the one hand and the smoke outlet and a portion of the uptake flues on the other, and to place said space in communication with the remainder of the uptake flues.

From the above it is evident that an oven constructed as described will have approximately three times more heating surface than that o an ordinary oven of the same dimensions also that the oven just described may be heated very quickly and maintained at a more uniform temperature with less fuel than has heretofore been attained.

Having now fully shown and described my invention and the best manner for its construction to me known at this time, I desire to have it distinctly understood that various changes and modifications may be made in the details thereof without in any manner departing from the spirit of the invention or of sacrificing any of the many advantages.

What I claim and desire to secure by Letters Patent of the United States, is

1. The combination in a cooking stove having a firebox, an outlet for products of combustion, and an oven spaced below the top of the stove, of a downtake for products of combustion leading from the firebox down one side of the. oven, intercommunicating horizontal flues underlying the oven and having communication at one end with said downtake, uptake fiues leading from the other ends of said horizontal flues along the opposite side of the oven and spaced at their upper open ends below the stove top, and two sets of dampers below the stove top, one set being adapted when closed to cut off partially communication between the space between the oven and stove top on the one hand and the outlet and the tops of said uptake flues on the other hand, and the other set being pivoted on vertical axes to swing laterally, being adapted in one position to cooperate with the first set to cut ofi such communication completely and in another position to cooperate therewith to cut off communication between said space on the one hand and the outlet and a portion of the uptake flues on the other hand and to place said space in communication with the tops of the remainder of the uptake flues.

2. The combination in a cooking stove having a firebox, an outlet for products of combustion, and an oven between the firebox and outlet and spaced below the top of the stove, of a downtake leading from the firebox along the front of the oven, intercommunicating horizontal flues leading from the bottom of said downtake beneath the oven, uptake flues leading from the rear ends of said horizontal fiues along the rear of the oven and spaced at their open upper ends below the stove top, a damper adapted when closed to cut oil all passage of products of combustion from the firebox rem-ward through the space above theoven, and two other sets of dampers below the stove top and in rear of the other damper, one set being adapted when closed to cut ofl partially communication between said space on the one hand and the outlet and the tops of said uptake flues on the other hand, and the other set being pivoted on vertical axes to swing laterally, being adapted in one position to cooperate with the first set to cut ofl such communication completely and in another position to cooperate therewith to cut oil communication between said space on the one hand and a portion of the uptake flues on the other hand, said portionbeing in communication with the outlet, and to place said space in comimlnication with the tops of the remainder of the uptake tlues.

3. The combination in a cooking stove having a firebox, an outlet for products of combustion, and an oven between the firebox and outlet and spaced below the top of the stove, of a downtake leading from the fire box along the front of the oven, intercommunicating horizontal tlues leading from J l l the bottom of the downtake beneath the oven, uptake Ilues leading from the rear ends of said horizontal llues along the rear of the oven and spaced at their upper open ends below the stove top, said ends being in com munication with the outlet, an upright plate extending across the space between the oven and stove top in advance of the tops of said uptake fines and having a central and two lateral damper openings, a damper controlling the central opening, and two other dampers pivoted at their inner ends on ver tical axes and adapted in one position to close said lateral openings and when swung rearward to inelose with said other damper and the frame of the stove a chamber communicating only with the outlet and the tops of the central uptake l'lues, the tops of the lateral uptake llues being then in connnunication with the space between the oven and stove top.

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

ELWVOOD SCOTT. itnesses WVILSQN D. Ln'r'r, ROBERT L. SMrru.

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