US718726A - Smelting-furnace. - Google Patents

Description

'No. 718,726. PATENTED JAN. 20, 1903. F. B. PETTENGILL & E. NICHOLSON.

SMELTING FURNACE. APPLICATION FILED P513. 7 1902.

NO MODEL.

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UNITE STATES PATENT OFFICE.

FREDERICK B. PETTENGILL AND EDWARD NICHOLSON, OF LOS ANGELES, CALIFORNIA, ASSIGNORS TO OIL BLAST FURNACE SMELTING COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

SMELTlNG-FURNACE.

SPECIFICATION forming part of Letters Patent No. 718,726, dated January 20, 1903.

. Application filed February '7, 1902. Serial No. 93,082. (No model.)

To (ZZZ whom it nwty concern.-

Be it known that we, FREDERICK B. PETTEN- GILL and EDWARD NIoHoLsoN, citizens of the United States, residing in Los Angeles, in the county of Los Angeles, State of California, have invented new and useful Improvements in smelting-Furnaces, of which the following is a specification.

Our invention relates to smelting-furnaces in which the material is melted by a blastflame; and the objects thereof are to produce a furnace of simple construction and of great efficiency. We accomplish these objects by the furnace described herein and illustrated in the accompanying drawings, forming a part hereof, in which- Figure 1 is a vertical longitudinal central section of our furnace. Fig. 2 is a cross-section on the line 2 2 of Fig. 1 looking in the direction indicated by the arrow.

In the drawings, A is the stack, the bottom portion of which forms the smelting-chamber B. Above the smelting-chamber is a port closed by door 0, through which the material to be smelted is fed into the chamber. Connected with the smelting-chamber is combustion-chamber D, the bottom of which forms receptacle E for the reception of the molten material, which runs from the smelting-chamber thereinto through channel F, which connects the hearth of the smeltingchamber therewith. The sides of the smelting-chamber and the top and sides of the combustionchamber are lined with lining which consists of tubes H, connected to hollow headers I, which tubes and headers are supplied with water through pipe J. The water-tubes are spaced apart, so that the fire-brick project therebetween, (most distinctly shown in Fig. 2,) so that the lining of said chamber is a composite one, being partly a water-jacket and partly a fire-brick lining. Any other refrac- Lory material may be interposed between the tubes.

lie in the fact that it does not use up as much heat as a complete water-jacket lining, has the heat-resisting qualities thereof, and is cheaper.

K and L are tap-holes provided for drawing off the slag and molten metal, respectively. A pipe M carries the steam formed in the The advantages of this kind of lining tubes and headers to a boiler. (Not shown.) Projecting into the front of the combustionchamber is hydrocarbon-burner N, by means of which a blast-flame is projected against the material to be smelted.

' O and P are the steam and oil pipes which supply the fuel to the burner.

By having the molten-metal receptacle in the bottom of the combustion-chamber it is subjected to great heat, and a large amount of molten metal and slag may be retained therein, and the trouble of frequent drawings oif are thereby obviated. As many combustion-chambers may beconnected with the smelting-chamber as may be desired.

Having described our invention, what We claim as new, and desire to secure by Letters Patent, is-

1. A smelting-furnace comprising a smelting-chamber and a combustion-chamber in communication therewith,said chambers having a composite lining of spaced water-tubes and fire-brick between said tubes; said tubes and brick alternating and forming the interior surface of said chambers.

2. A smelting-furnace, comprising a smelting-chamber having a composite lining around the sides thereof, said lining being composed of spaced water-tubes connected to hollow headers, and fire-brick therebetween; and a combustion-chamber in communication with the smelting-chamber, having a composite lining around the sides and top thereof, composed of spaced water-tubes connected to hollow headers and fire brick between said tubes.

3. In a smelting-furnace, a lining for the smelting-chamber thereof,composed of spaced water-tubes, and refractory material interposed between and back of said tubes, the said tubes and material alternating and forming the interior surface of said chamber.

In witness that we claim the foregoing we have hereunto subscribed our names this 31st day of January, 1902. I

FREDERICK B. PETTENGILL.

EDWARD NICHOLSON.

Witnesses:

G. E. HARPHAM, HENRY T. HAZARD.

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