US287273A - Apparatus for treating molten iron - Google Patents

Description

(A10 Model.)

B. H. GORDON.

APPARATUS FOR TREATING MOLTEN IRON.

Patented Oct. 23, 1883.

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PATENT APPARATUS FOR TREATBNG MOLTEN IRON.

SPECIFICATION forming part of Letters Patent No. 287,273, dated October 23, 1883.

Application filed December 21, 1882. (No model.)

pable of moving longitudinally and rotating To all whom it may concern.-

' Be it known that I, ROBERT H. GORDON, a citizen of the United States, residing at Beading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Treating Molten Metal, of which the following is a specireference being had therein to the ac companying drawings, in which- Figure 1 is anelevation, partly in section, of a. planter apparatus constructed and arranged in accordance with my invention; and Fig. 2 is a detail of a portion of the same.

A represents an ordinary blast furnace or cupola, provided with the usual blast-pipes, A, (one only being shown,) and dischargespout Ah,

In suitable proximity to the cupola to receive charges of metal therefrom, I locate a puddling-furnace, B; or it may be a retort, pot, or crucible of any usual-construction, except that its mouth or open end is adapted to be closed air-tight by a removable cover, 0, provided with suitable connections to a device for producing a vacuum. In this instance the furnace or puddling-pan B is mounted on a shaft, B, and is counterbalanced by a weight, B, the said shaft being provided with a pinion, b, which, together with a worm, 1), handwheel b and shaft If, S61 cs'to tilt. the furnace so that it may occupy the various positions inlines, and to oscillate it, and by the addition of further gearing, b, in the usual manner, to rotate the furnace in order .to ball its contents. The shaft or trunnions B are supported in bearings formed in a framework, D, anchored .in the masonry, as usual in furnace construction. The frame-work is extended upward, and supports a platform,

D, upon which may belocated an ordinary blower, D as shown, or any other well-known er-pipe G ,is fitted snugly within vacuum-producing mechanism or devices, from which a connecting-pipe, D extends to a point above and over the center of the furnace B, when it is, as shown, in an upright position; or it may be arranged to connect with the covwhen the furnace is inclined, so that the contents may be exposed to the action of a vacuum while the furnace is rotated, if desired. 1 Connected to the cover 0 is a pipe, 0, which .the pipe D, but catherein, and at the same time maintaining a practically air-tight joint therewith. A shoulder, 0, is formed on the pipe G, and a collar, 0, is located below the shoulder, and connected by a link, 0 to a lever, c", pivoted to the framework or platform above, which lever is provided with a rod or chain, 0', whereby the cover may be elevated and retained in such position by securing the rod 0 upon a hook, 0 located upon any fixed portion of the apparatus. This construction permits a rotation of the furnace and its cover without breaking connection with the exhaust or vacuum devices.

The contact-surfaces of the furnace and its cover are fitted snugly to each other, and preferably beveled, so that by means of the hooks B, formed to catch under the flange B", an airtight joint may be secured between them. Other well-known fastening devices may be employed.

The outlet of the blower is directed into the stack E, as shown, in order to consume the deleterious gases eliminated. On the floor, at F, is an ordinary mold of any pattern'orfor an ingot. p

G represents an oxyhydrogen-burner, which consists of an air-blast pipe, 9, extending within and nearly to the end of a gas-pipe, g, the ends of the two pipes being connected by a perforated cone, is provided with a controlling-valve, 9, respectively. Gas from any suitable producer is conveyed in the pipe 9, and emerges infine jets in the perforations of the cone and the incoming air in pipe 9, which air may beheated or not, as desired, is thoroughly. intermixed with the gas, and produces in combustion an intensely-heated flame, which is directed upon the metal in the furnace when tilted to the left,

as shown in dotted lines. By this construe-- tion. of burner the combustion-point of the flame is exterior to the burner, and it is there- 'fore less liable to injury by the heat of the (See Fig. 2.) Each pipe In the arrangement of the principal elements of the apparatus as thus described, it .will be seen that the furnace B may be tilted to any of the positions indicated by dotted lines after the cover is raised therefrom. It may be tilted to the right and receive from the cupola a charge 2 ceases of iron in the melted state and in its first or reducing heat, and without undue exposure to the air, when, by the hand-wheel, the furnace is brought to an upright position. The coverthen lowered and secured, and the bl ower produces within the furnace a vacuum which causes the natural and absorbed deleterious substances now in a gaseous state and but slightcombined and contained by the iron to separate therefrom and enter the staclgwhcre they are consumed. The Vacuumtreatment is con .tinued until the products issuing from the vacmum-producing device into the stack indicate a; desired effect of the treatment by appearances well known to persons skilled in the art. The cover is now removed and the furnace is tilted to the lowest position to the right, and the metal is run directly into the .mold F; or, if a further heating is required, as is sometimes the case, to bring the iron to nature, the furnace is tilted to the left and the flame of the burner G'is directed therein, when it may be oscillated, and, if desired, rotated to ball the metal, and then tilted to deliver the ball for subsequent squeezing or other usual manipul-ation.

' By the arrangement of the apparatus as shown, it is apparent that pig-iron and, if desired, the usual admixtures of oxides of manganese and other substances may primarily be introduced into the furnace and therein reduced to the melted state by the burner G, as

. uum treatment, and subsequently manipulated in the usual manner, so that the introduction.

of he exhaust is utilized at the most advantageous stage in the process and without undue exposure to the air, as heretofore described.

I am aware that the oxyhydrogen flame has. been heretofore similarly employed, and do not broadly claim the same as of my invention.

Having described my invention and its operation, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a tilting'and rotatable piuldling-furnace, an air-tight cover removably secured to the same, a vacuum-producing device, and a connecting-pipe secured to the cover and adapted to rotate with said cover removable cover continuously connected to a I vacuuIii-producing device, and a reducingburner, substantially as shown and described. In testimony whereof I aflix my-signature in presence of two witnesses.

ROBT. H. GORDON. *vVitnesses:

E. I. STOCKING,

L. HILLS.

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