US1035589A - Combination coal and wood heating-stove. - Google Patents

Description

L. HOWARD. COMBINATION OOAL AND WOOD HEATING STOVE. APPLIOAT ION rum) APR.13, 11112.

1,035,589. Patented Aug. 13,1912.

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WITNESSES I & |NVENTQR" ah MW M 3 By m MM. W -H I ATTORNEY .coLuMBIA PLANODRAPH c0 WASHINGTON. D. c.

UNITED STATES PfkTENT OFFICE.

LINCOLN HOWARD, OF RALST'ON, NEBRASKA.

COMBINATION COAL AND WOOD HEATING-STOVE.

To all whom it may concern:

Be it known that I, LINCOLN HOWARD, a citizen of the United States of America, residing at Ralston, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in Combination Coal and Wood Heating- Stoves, of which the following is a specification.

The object of my invention is to provide a heating stove in which either wood or coal can. be used of the class shown in Patent No. 993,300, upon which Letters Patent were issued to me May 23, 1911, my improved stove being so constructed that I secure a greater degree of heat from it on a decreased quantity of fuel than from said patented stove or from any other stove of which I have any knowledge.

I accomplish my object by the construction shown in the accompanying drawings in which Figure 1 is a longitudinal sectional elevation of the stove, the base fire pot and drum broken away to show the interior arrangement; Fig. 2 is a top view of the fire pot grate frame, the grates and flat-flanged cast-- ings in each side of the fire pot forming air passage down the inside of the fire pot into the ash pit or base of the stove, and Fig. 3 is a detail top View of the grate frame showing incuts therein.

Similar letters refer to similar parts in the several views, A being the base of the stove and A a fire pot cast in an inverted conical shape to assist in radiating heat to the floor.

B B are upright flat castings spaced from the inside of the sides of fire pot A, the outwardly flanged edges I) b of said castings being seated against said sides of the fire pot. Said castings are securely attached, are open at both top and bottom, are preferably somewhat larger at their tops than at their bottoms and form air passages for part of the air from the draft passage down into the base of the stove.

D is the grate frame and (Z (Z incuts in each side of the same to allow the lower end of castings B B to pass through and slightly below the grate frame into the base of the stove. D D are grates in said grate frame.

The sheet iron body E of the stove is, preferably, joined to the top of the fire pot as shown in Fig. 1 at e.

F is a casting which forms an inner wall Specification of Letters Patent.

Application filed April 13, 1912.

Patented Aug. 13, 1912.

Serial No. 690.602.

of a draft passage through which cold air, entering the stove at draft F, is heated while passing around to the sides and rear of the stove, part of said air passing through ports h it into the preheated air passages formed by castings B B and thence downthrough said incuts (Z (Z in grate frame D into the base of the stoveunder the grates to supply the grates with draft while the greater part of said preheated air passes on back to the rear of the stove and through ports 7 i into the combustion chamber above the fire. The special object of casting F is to conduct the cold air entering the stove at said draft F around the stove the longest possible circuit so that it will be heated to the highest degree possible before being admitted either to the grates or combustion chamber. Said casting F is seated in the upper edge of the fire pot and is usually composed of two or more sections and is preferably corrugated except at the edges where it joins the sheet iron body and the fire pot of the stove. The upper edge of said casting lies flat against said sheet iron body. The purpose in casting it corrugated is to secure both greater strength and heating surface.

I is an incurve extending horizontally around casting F; the rear section of said casting is provided with a seat J in said curve I to support a batlle plate K. The rear section of casting F is provided with ports below the incurved line I to admit preheated air from the draft passage to the combustion chamber under battle plate K and the two side sections of casting F are provided with ports h it through which the preheated air is admitted into the air passages at sides of the stove and conducted down through the grate frame to the base of the stove. The air admitted through draft F, passes through said incurved draft passage and becomes highly heated in passing around to the sides and rear of the stove, the larger part passing on to the rear of the stove and thence through a plurality of ports f f in the lower part of casting F into the combustion chamber under baffle plate K where it is forced to mingle with and burn the gases and smoke coked out of the fuel, while a smaller part passes down through ports h h in the lower edge of the casting F at the sides of the fire pot to the base of the stove where it is drawn up through the grates to start the fire and keep up the coke and gas making process. Casting F is kept at a high temperature by means of a hot blast from the rear of the stove under said baffle plate K and the temperature of the air While passing it c0ntinues to increase. The volume of air passing through said draft passage is greatly expanded by its rise in temperature and rushes into the combustion chamber with great force. By means of the baffle plate K this preheated air is deflected toward the fire and forced to mingle with the combustible smoke and gases arising from the fuel. That part of the preheated air passing down into the base of the stove under the grates is only sufficient to keep the fire alive and keep up the coking and gas making process.

lVhat I claim and desire to secure by Letters Patent is,

1. The combination in a wood and coal heating stove with a base, a body portion, a

fire pot of inverted conical shape spaced from the body, a draft and a corrugated incurved casting forming the inner wall and provided with ports at the rear and sides below the line of the incurve projection of the passage for air entering said draft and a baffie plate seated in said incurve member, of grates and a grate frame supported on said base said frame having longitudinal incuts in each side, and flat castings spaced from the fire pot open at the top and bottom the outwardly flanged edges thereof seated against the sides of the fire pot, the open bottoms thereof extending into said base through the longitudinal incuts in said grate frame, said flat castings forming air passages for air entering the draft and passing around to the sides of the stove and through the side ports near the base of the corrugated casting to pass into the base of the stove.

2. The combination in a wood and coal with incuts in which said flat castings are seated.

3. In a heating stove of the kind described the combination with the base, the fire pot and a casting provided with ports at the rear and sides near its bottom, of castings connected with but spaced from the inner sides of the fire pot, open at the top and bot tom and having connection with said side ports at the lower edge of the top casting and a grate frame and grates therein sup ported in the top of the base said frame having an incut on each side to receive and seat the open bottoms of said castings.

i. In a heating stove for wood and coal, a base and a grate frame therein provided with grates the outer sides of said frame having incuts, a fire pot supported on said base, upright castings their flanged edges engaging with the sides of said fire pot, the bottoms seated in sald incuts, said upright castings being open from top to bottom and adapted to form passages for preheated air and carry the same into the base of the stove.

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

LINCOLN HOWARD.

Vitnesses Mnoonn SAUTEE, EDWARD C. SELs.

Copies Commissioner of Patents,

Washington, D. C.

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