US977417A - Stove and range construction. - Google Patents

Description

J. P. McDONOUGH. STOVE AND BANG-E CONSTRUCTION.

APPL IOATIQN FILED APR- 8. 1910.

Patented Nov. 29, 1910;

WITNESSES: A WQ I Tu TTORNEY.

UNTE TATES ATE JOHN P. MODONOUGH, OF ST. LOUIS, MISSOURI, ASSIGNOR 0F ONE-HALF TO L. A. RAGAN, OF ST. LOUIS, MISSOURI.

STOVE AND RANGE CONSTRUCTION.

strait.

Specification of Letters Patent.

Application filed April 8, 1910.

Patented Nov. 29, 1910.

Serial No. 554,196.

To all whom it "may concern:

Be it known that 1, JOHN P. McDon- OL'GH, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Stove and Range Constructions, of which the following is a full, clear, and exact description, reference being had to the acgompgnying drawings, forming a part neieoi.

My invention has relation to improvements in stove and range constructions; and it consists in the novel details more fully set forth in the specification and pointed out in the claim.

In the drawings, Figure 1 is a side elevation of a conventional stove or house range, the wall of the stove being removed to show the interior, and the parts being shown in section along the plane of removal of said wall, the said figure showing my invention applied to said stove; and Fig. 2 is a horizontal section taken below the stove-top on the line 2-2 of Fig. l.

The object of my invention is to substitute for the grate and ash-sifter in the prevailing forms of heating and cooking stoves and ranges, an upper burning water-tube grate and a lower burning grate, both being located in the same fire-box compartment, the ends of the water-tubes terminating in headers (either in the form of boxes as shown, or their equivalents) exposed to the heat of the combustion products, the lower grate intercepting whatever fuel drops from the upper grate and not previously consumed thereon.

it further object is to so dispose the grate surfaces as to cause the draft to pass from the compartment above the upper grate through said upper grate and into the compartment between thegrates, the draft from the lower-burning grate being upward and rearward whereby the products ultimately pass into and through the stove fines into the exit fine in the usual way.

A further object is to effect perfect combustion of the fuel, producing practically no smoke, insuring cleanliness and a high heating efficiency.

The water-tube grate and its respective headers are in circuitwith a water-tank, the contents of which is kept heated by the circulation of the water between it and the headers and tubes, so that a constant supply of hot water may always be on hand.

The advantages of the invention will be best apparent from a detailed description thereof, which is as follows:Referring to the drawings, S represents a conventional form of stove or range (though the invention is applicable to any form of heating furnace), in which the tire-box is represented by F, and the ash-receptacle by A. Separating the ash-receptacle from the fire-box is an ordinary upward burning grate G to which atmospheric air may be admitted through the valve-controlled openings of doors D, D. Above the door D is a front header 1 which is connected by means of the upwardly and rearwardly inclined watertubes 2 to an inner header 1 located within the fire-box and spaced from the rear wall thereof as shown. Tapping the upper portion of the inner header 1 is a circulating pipe a which discharges into the upper end of a hot-water tank '1 placed adjacent to, and extending above the stove, the return from the tank entering the upper portion of the header 1 through the circulating or return pipe a. Sections of these pipes a, a, are disposed alongside the stove and below the stove-top, thereby being out of the way and not interfering with the movements of the person working about the'stove. Access to the water-tubes 2 which form the upper and main grate for the fuel may be had through a door D placed between the stovetop and the header 1, air being admitted into the space above the water-grate through valve-controlled openings of said door D as well understood in the art. The stove is provided with a damper-controlled exit fine E to which lead the usual stove fines or passages f as well understood, no description of these being necessary.

)Vhatever fuel is not consumed on the upper grate formed by the water-tubes 2 will drop onto the lower grate G and there be thoroughly consumed. As seen from the arrows in Fig. 1, the upper grate, which clivides the fire-box into two superposed intercominunioating compartments (one above the upper grate, and the other between the grates) is a downward burning grate, whereas the bottom grate G is an upward burning grate. The air drawn through the upper grate carries with it unconsumed products of combustion, and as these must not only pass through the incandescent carbon on the upper grate, but mustmix more or less with air and the combustion products passing upward and rearward from the bottom grate G, it follows that all the products will be practically consumed and no smoke result. So that we not only have a stove which completely burns all available carbon and other combustible elements of the fuel, but serves to heat a maximum quantity of water to be used for domestic or other purposes. Owing to the complete consumption of the fuel, a minimum quantity of ash will result, no smoke or soot will deposit in the stove tines, and a clean fire is at all times assured. The invention is not limited to any special design otstove, range or turnace.

Having described my invention, what I claim is In combination with a stove having a bottom ash receptacle and a fire-box between said receptacle and stove top, a bottom grate se )arating the lire-box from the ash receptacle, a rearwardly and upwardly inclined water-tube grate mounted across the firebox a suitable distance above the bottom grate and dividing the fire-box into two superposed sections, an outer header forming a wall for the upper firebox section and discharging into the bottoms of the watertubes, an inner header engaging the stovetop and forming a tight joint therewith and spaced a suitable distance from the rear wall of the fire-box and from the bottom grate and receiving the discharges from the inner upper ends of the Water-tubes, a watertank located outside, and extending above, the stove, circulating pipes leading from the upper portions of the respective headers and communicating with the top and bottom of the water-tank, doors above and below the outer header leading to the respective fire-box sections opposite thereto, an exit flue, and fines in the stove connecting said line with the rear of the fire-box.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN P. McDONOUGl-l.

lVitnesses EMIL STAREK, Jos. A. MICHEL.

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