US695182A - Puddling-furnace. - Google Patents

Description

Patented Mar. ",1902. J. D. SWINDELL. PUDDLING FURNACE.

(Application filed Apr. 22. 1901.;

I 4Sheet s-Sheet I.

(No Model.)

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Patented'Mar. ll, I902.

J. D. SWINDELL.

PUDDLING FURNACE.

(Application filed App 22. 1901.1

4 Sheets-Sheet 2.

(No Model.)

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J. D. SWINDELL.

PUDDLING FURNACE.

(Applicxition filed Apr. 22. 1901.1 (No Model.)

Patented Mar. ll, I902.

4 Sheets-Sheet 3.

11V VEN T OR No. 695,!82. Patented Mar. II, I902.

J. n. SWlNDELL. PUDDLINGFURNACE.

(Appliatiun filed Ayn-.22. 1901.) v (No Model.) I 4 Sheets-SheetA.

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JAMES D. SWINDELL, OF PITTSBURG, PENNSYLVANIA.

PUDDLING- FURNACE.

SPECIFICATION forming of Letters Patent No. 695,182, dated March 1 l, 1902.

Serial No. 56,969. (No model.)

To all whom it may concern/.-

Be it known that I, JAMES D. SWINDELL, a resident of Pittsburg, in the county of Alle gheny and State of Pennsylvania, have invented certain new and useful Improvements in Puddling-Furnaces; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it apper' tains to make and use the same.

My invention relates to an improvement in puddling-furnaces, the object of the invention being to provide a furnace of this character with improved means for catching refuse material from the iron and prevent the same entering the fines to interfere with the perfect operation of the furnace.

Afurther object is to provide a furnace of this character which will utilize the greatest amount of heat and which will be extremely simple in construction and most effectual when in operation.

A further object is to provide an improved puddling-chamber for a furnace the lining of which'will at all times be maintained cool.

WVith these objects in view the invention consists in certain novel features of eonstructionand combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is I a view in longitudinalsection, illustrating my improvements. Fig; 2 is a view in section on the line a: a; of Fig. 1. Fig. 3 is a View in section on the line 3/ y of Fig. 1, and Fig. at is a view in section on the line of Fig. 1.

1 represents walls of masonry arrangedto form the furnace,which will now be described.

Air-chambers 2 2 are provided at'the respective ends: of the furnace and are separated from gas-chambers 8 3 by partitionwalls at, extending nearly to the top of the furnace, but leaving a space above the same for a purpose which will hereinafter appear. The gas chambers 3 8 are separated by a I wall 5, on which latter a support 6 for the puddling chamber or receptacle 7 is located,

the passage of gas to chamber 7, and checkerwork 8 is provided in each gas-chamber, but

located inside the vertical plane of the lines 7 out of the way of refuse material which may escape from the puddling-chamber. The air- chambers 2 and 2 are also provided with chccker-work, and the end walls of the furnace are made with openings communicating with the air-chambers, and platforms of masonry 9, preferably L. shape in cross-section, are provided in the interior of air-chambers 2 2, at the openings in the end walls of the furnace, to support thereon metal receptacles for water, forming traps 10 to catch refuse particles which would otherwise be carried into" the flues, and the walls are made with downwardly-projecting lips 10, normally submerged in the water of the traps to make the same air-tight. I

The puddling-cl1amber'7is provided on opposite sides with water-bridge boxes 11, connected with water-jamb boxes 12 at the corboxes 12 are made with curved inner Walls .to give to the interior of the paddling-chamher a general elliptical contour, and the boxes 11 are provided at each end with stand-pipes 13 to relieve any pressure therein. Suitable door-openings 1e are provided in the side walls of the furnace, between the jamh-boxes 12, and are intended to be normally closed by doors. (Not shown.)

The top'of the'furnace is preferably dished, as shown at 15, to directthe flame down onto the material in the puddling-ehamber, and the upright sides of the support 6 are made with inwardly-projecting flanges 17, of masonry, extending over boxes'11 to protect them from the flame, and the upright walls l are provided at their upper ends with inwardly-projecting arches 18, extending over the flues '1" to prevent as far as possible the refuse particles of iron which are carried offby the draft from falling down into the gas-chambers.

The checker-work in the gas and air chambers is supported on arches 19, and beneath said arches flues communicate, as will be hereinafter described, and the gas-chambers are provided with solid walls 20, supporting one end of the checker-work and spaced from the walls 4, so as to form-receptacles 21 beneath fines 7 and in which the refuse mate rial will collect and not be carried into the fines.

lVith the gas-chamber 3 a flue 22 eomunn parallel with each other.

nicates, and with gas-chamber 3 a flue 24 communicates, and said fines are preferably located on opposite sides of the furnace proper and extend forward beyond the furnace and A flue 25 communicates with air-chamber 2 and a line 23 with air-chamber 2;, and said fines 25 and 23 eX- tend beyond the furnace and parallel with flues 22 and 24, and a chamber 26 extends across all of said flues and communicates therewith by Openings normally closed by valves 27, 28, 29, and 30, respectively, and said chamber 26 also communicates by a flue 31 with a suitable stack 32 for carrying off the waste gases and products of combustion, and the stack 32 is preferably provided with a hinged cap or closure 32 to regulate the draft therethrough. The fiues 22 and 24 communicate by means of chambers 33 with suitable gas-generators 34, and valves 35 and 36, respectively, are provided in theopenings connecting flues 22 and 24 with chambers 33 to open and close the openings and regulate the admissionof gas to the furnacen Air-inlet valves 37 and 38 are located at or near the ends of fines 23 and 25, respectively, to regulate the admission of air to the furnace, and all of said valves above enumerated are provided with suitable counterbalanced mechanism (not shown) for operating them.

The operation of my vimprovements is as follows: Assuming that all of the valves-are closed and the operation of the furnace is just beginning, ore in sufficient quantity is passed through one of the door-openings into puddling-chamber '7. Valves 35, 38, 2S, and 29 are opened, and gas will pass through flue 22 into gas-chamber 3 and up through fiues 7, and air which enters chamber 2 through flue 25 will pass up over wall 4 and commingle with the gas, and combustion will take place in chamber 7 to melt the ore therein, and a small portion of the products of combustion and waste gases will pass down fines 7 into gas-chamber 3 and through flue 24 into chamber 26 and from thence out through the stack 32. The greater portion of the products of combustion and waste gases will, however,

pass over the top of wall 4,through air-chamber 2, and out through flue 23 to the chamber 26. The passage of the products of combustion through the checker-work in said chambers will heat the same to an intense degree to assist combustion when the direction of flow of the air and gas is reversed, as will be hereinafter explained. Owing to the strong draft, small refuse particles are liable to and in fact are carried off in the products of combustion and waste gases,and the refuse particles which are carried into gas-chamber 3 will fall behind walls 20, and the latter will serve to prevent the refuse being drawn into the fines and become burned cinder to choke the fines and prevent the perfect operation of the furnace. The refuse material which is carried over wall 4 into air-chamber 2 will, owing to their momentum, be carried over into trap 10, and when a large amount collects therein the trap can be emptied and the metal found therein can be again treated in the furnace.

To reverse the flow of air and gas through the furnace, valves 35, 38, 28, and 29 are closed and valves 37, 36, 27, and 30 opened, and gas will enter chamber 3, air-chamber 2, and the air and gas will commingle in chamber 7, and

the products of combustion escape through chambers 2 and 3, as will be readily understood.

Various slight changes might be resorted to in'the general form and arrangement of the several parts described without departing from the spirit and scope of my invention. and hence I would have it understood that I do not wish to limit myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention as claimed.

Having fully described my invent ion, what I claim as new, and desire to secure by Letters Patent, is-

1. In a puddling-furnace, the combination with an outlet for the escape of burned gases and products of combustiomof a water-trap projecting into said outlet between the ends thereof to catch the refuse particles in the waste gases and products of combustion.

2. In a puddling-furnace, the combination of a puddling-chamber, means for supplying air and gas thereto, a flue for carrying off the products of combustion, and a water-trap projecting into said flue for catching the refuse particles in said products of combustion.

3. In a puddling-furnace, the combination with a puddling-chamber, air and gas chambers communicating therewith and means for supplying air and gas to said chambers and for carrying off the products of combustion therefrom, of water-traps projectinginto said air-chambers between the ends thereof to catch refuse material and a receptacle in each gas-chamber to catch the refuse material conveyed thereto.

4. In a puddling-furnace, the combination of a puddling-chamber, gas and air chambers communicating therewith,and removable water-traps mounted in the furnace-Wall and projecting into the outlets between the ends thereof to catch the refuse particles in the products of combustion and waste gases.

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

JAMES D. SWINDELL.

IVitnesses:

JAs. H. SWINDELL, F. O. HENZI.

IIO

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