US273840A

US273840A - herreshoff

Info

Publication number: US273840A
Authority: US
Publication date: 1883-03-13
Anticipated expiration: 1900-03-13

Description

2 Sheets--Sheet 1.

(No-Model.)

J. B. F. HERRESHOPF.

COPPER SMBLTING FURNACE.

Patented Mar.13,1883.

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(No Model.) 2 SheetQ-Shet 2.

J. B. P. HERRESHOPF.

. COPPER SMELTING FURNACE;

No. 273.840. 4 Patented Ma,r.13,1883.

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N. PETERS, Plmko-Lzlbagrapher. willhingion. n. c

UNITED STATES PATENT OFFICE.

JOHN B. F. HERRESHOFF, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIM- SELF, AND GEORGE H. NICHOLS AND WILLIAM H. NICHOLS, BOTH OF NEW YORK, N. Y.

COPPER=SMELTING FURNACE.

SPECIFICATION forming part of Letters Patent No. 273,840, dated March 13, 1883.

Application filed May 5, 1882.

T 0 all whom it may concern:

Be it known that I, JOHN BROWN FRANCIS HERRESHOFF, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Oopper-Smelting Furnace, of which the following is a specification.

Figure l is a vertical central section of my improved copper-smelting furnace. Fig. 2 is an outer end view, and Fig. 3 an inner end view, of the well that is used in connection with said furnace. Fig. 4 is a horizontal section of the furnace on the line 0 0, Fig.1. Fig. 5 is an elevation, partly in section, of the lower part of the furnace; and Fig.6 is a detail vertical section, on an enlarged scale, through the slag-outlet of the furnace.

The object of this invention is to provide a furnace for smelting copper or the like with means for allowing the proper outflow of the matte and slag into a well or receiver without risking too rapid destruction of the walls through which said matte and slag escape, and likewise without unduly chilling the escaping mass.

Another object is to permit due continuity of process by providing for the removal, when full or worn out, of the well or receiver, and substitution for the same of another well or receiver, instead of making the latter a definite attachment to the furnace.

My invention consists in attaching a waterjacket, composed of an inner metal frame, an outer metal frame, and an outer plate, to the outside of the well or receiver, said waterjacket forming a continuity of the inlet-opening of the well. The well is made movable, being placed on wheels, and is provided with a spout near its upper end.

Other features of improvement will more fully appear from the following description:

In the. drawings, the letter A represents a suitable furnace for smelting copper or analogous substances. The lower part of this furnace is built up of double metal walls B,which contain between them a water-chamber, O. Through the lower part of this water-chamber is made the aperture a, for the discharge of the molten mass from the furnace. This aperture a is formed by placing a thick iron frame, D, into the water-jacket O, which frame is (No model.)

bolted or riveted to the walls of the jacket 0, and forms the outer wall of the opening a and the inner wall to the water-jacket O, as clearly shown in Fig. 6. In practice this frame D should be of such size that the hole a will measure six by six inches, and that the iron of which the frame D is composed should measure about one by two inches in thickness. These measurements are intended for a furnace which in its main smelting portion is about six to eight feet high, four to five feet in diameter, and made of two iron cylinders, I3 B, of which the ends are riveted to a two-bytwo Wrought-iron ring, I).

The tuy eres E' E, entering through the water-jacket O, are shown in Fig. 4.

The discharge-opening a of the furnace communicates with the receiving'opening (l of the well or receiver F. This receiver is a metallic box lined on the inner side with fire-brick and placed on wheels or rollers G. That side of the well. which faces the furnace A carries a water-jacket which is formed by two iron frames, 0 andf, and by metallic face-plates g and h. This water-jacket is bolted or otherwise fastened to the well F, on the outer side thereof, in such manner that the space (1*,

bounded by the inner frame, 6, constitutes a prolongation of the opening d, and is likewise in line with the aperture a, as clearly shown in Fig. 6. Water isfed into the space between the frames 6 and fthrough suitable pipes. The inner frame, 0, is of the thickness substantiall y of the frame I).

In practice the molten contents of the furnace will flow through the passagea (1 dinto the well F, which is placed close to the furnace, and anchored to the same, by preference, by means of screw-bolts H, (shown in Fig. 4,) and as the molten matter passes through the said channel a d? dit will heat the iron frames 1) and 6; but these frames, being in contact, on their outer edges, with the water, will not be rapidly destroyed by the heat, and yet they are of such thickness that where they are in contact with the molten mass they will not cause the same to be unduly chilled, although they are in contact with water. In

other words, the water-jackets protect these iron frames D and e from rapid destruction by the heat, and yet the iron frames are of such thickness that they protect the molten matte and slag from undue chilling by the water. Whatever greater or less space for leakage may exist between the framesD and e will be luted by the matte that leaks into such space,

and thus continuity of the passage to the well will be established and the well itself prote'cted from rapid destruction by the heated mass. When the well is full or is to be repaired it can readily be moved away from the furnace on its wheels and its place occupied by another well of like construction, so that the continuity of the process going on in the furnace need not be interrupted.

' Although I have shown the frame D placed into a waterjacket that embraces the entire lower part of the furnace, it is nevertheless clear that the invention is also applicable to furnaces which are not entirely surrounded by a water-jacket, in which case the frame D, surrounded by a partial water-jacket substantially like that shown on the body of the well F, may be built into the brick furnace.

The well F has a lower discharge-opening, i, and an upper spout, j, which spout is cooled by a pipe, it, that carries water through it.

Throughout, the furnace above described is calculated to protect the parts that would otherwise be exposed to rapid destruction by contact with the heated contents from such destruction, and I have found inipractice that the arrangement of double water-jacket or interposed water-jacket between the well and 5 jacketed furnace makes the well last very much longer than does the ordinary well heretofore used. I

I donot claim placing an annular waterjacket between the stationary and the rotary parts ofa puddling-furnace, nor the mere use of 0 water-jacketed outlet-openings for furnaces.

So far as the well itselfis concerned, it can be advantageously used, in a furnace having able well or receiver F, having inlet-opening 01 near its upper end, and with a water-jacket having),- opening 01", attached to said well and forming a continuous passage with opening d, so that it will be interposed between the well and the water-jacket on said furnace, and continuous therewith when said well is placed againstsaid furnace, substantially as described.

2. The combination of a smelting-furnace, having tap-hole a, with amovable well, F, having inlet-opening d, which is continuous with said tap-hole a when the well is in position, said well being provided with a vertical waterjacket on its outer side, said waterjacket forming apassage, d, contiguous to andin line with the inlet-opening d of the well, substrutially as described.

JOHN BROWN FRANCIS HER-RESHOFE.