US1181209A - Sink-head top. - Google Patents

Description

D. 0. BUCHANAN.

I sm APPLICATION K HEAD TOP."

FILED SEPT.

Patented May 2, 1916.

W/T/VESSES:

INVENTOR- BY 960. a 9%, a

nrromvsy to which it appertains to make and use the DAVID D. BUCHANAN, or JoHnsTowN, PENNsYLvAitIa.

SINK-HEAD TOP.

Specification of Letters Patent.

Patented liftay 2, 119116.

I Application filed September 28, 1915. Serial N 0. 52,990.

To all whom it may concern:

Be it known that I, DAVID D. BUCHANAN, a citizen of the United States, residing in the city of J ohnstown, in the county of Cambria and State of Pennsylvania, (whose postoflice address is J ohnstown, Pennsylvania,) have invented certain new and useful Improvements in Sink-Head Tops; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art same.

My invention relates to a sink-head top adapted to be placed on the upper part of an ingot mold or other mold, whereby, when the mold and top are filled with molten metal, such as steel or iron, the upper portion contained within the sink-head top, is maintained fluid by reason of the refractory and non-conducting character of that portion of the top adjacent to the metal sothat with a metal ingot mold, but wish it understood that it may be used in connection with other molds as will bereadily understood.

Referring now to the annexed sheet of drawings which forms part of this specification, Figure 1 is a vertical sectional elevation through the top of an ingot mold and my sink-head taken on the line II of Flg.

2; Fig. 2 is a top plan of my sink-head and the top of the ingot mold; Fig. 3 is a side elevation of the inner face of one of the bricks used in lining my sink-head casing; Fig. l is a detail view illustrating the manner of attaching the staple lugs to my sinkhead casing; Fig. 5 is an end elevation of one of the lining bricks. y

Referring now to the characters of reference on the drawings: 1 indicates the ingot mold in generaLQ are the lifting lugs there of, 3 the body of the ingot contained within said mold, 4 is the metal casing of my sinkhead top, 5 is an inwardly-projecting or ofl'- set shelf portion of the casing which is portion is solid,

adapted to rest on the upper surface of the ingot mold as shown, while the downwardly extending flange portion 6 of the sink-head casing projects slightly into the top of the ingot mold for the purpose of maintaining my sink-head top in position thereon, and, as shown in the drawings, I prefer to make the lower downwardly extending flange portion of my sink-head casing slightly smaller than the opening in the mold top to allow for irregularities in workmanship and to insure that it may be readily placed therein. The space, however, between the downwardly extending flange 6 and the inside of the mold top is'very small so that the molten metal will be cooled immediately on contact therewith and not flow into the small space, as this would cause a fin or projection, making it ditlicult to withdraw the casing from the mold.

The lifting staples on the sink-head top are indicated as 7, while 8 are the enlarged portions of the casing adapted to receive the lower ends of the same, as shown, while 9 are inwardly extending ribs projecting from the corners of the casing against the sides of which the lining bricks 10 are adapted to be seated. The lining bricks are provided with beveled ends 11, as illustrated, and I prefer to make the inner faces 12 of the bricks, inclined in such a Way that the thicker portion of each brick is above and the thinner portion below, thereby forming a sink-head of tapering form smaller at the top than at the bottom, whereby the sink head top may be readily Withdrawn from the metal which is cast therein. It will be noted that I prefer to make the inwardly extending ribs 9 shorter than the beveled ends of the. bricks, thereby leaving a space between the inner portions of the edges of the bricks, which, after they are set inplace, I

fill with clay, grout or other lute 13, as

illustrated. This further serves to hold the bricks in place and prevents contact of molten metal with the metal portions of the easing or with the ribs 9 thereof.

The sink-head in general is indicated as 14: and the shrinkage cavity therein as 15.

The advantages of this form of construction are that the casing with the brick lining can be readily stripped from the top of the ingot and used again and again many times, thereby greatly reducing the labor and cost of a construction of this kind, as

previouslv, by reason of the form, construction and arrangement of sink-head tops, they can only be used once, as they are either burned to the ingot top and have to be broken off, or are formed of material such that their shape has to be destroyed before the ingot can be subjected to heating or further treatment. Another advantage is that by reason of my construction the bricks can be easily slid into place within the casing, the slight openings at the corners quickly closed by mud, lute or other material, and the whole structure made in one to be readily put in place. Another advantage is that the bricks, being of simple form, are easily and cheaply made as compared with other shapes which are made in one piece with a large hole therethrough, these latter shapes being very difficult to make,

causing considerable labor and expense in handling and breakage. Another advantage of my construction is that the bricks can be readily packed in a small space in manufacture, shipment and storage prior to use. Another advantage of my construction is that it requires very little lute or mud to seal the top of the mold, and, on account of the small amount of this moist material, the heat of the casing or mold is sufficient to dry the top preparatory to use, whereas other forms require special drying ovens or other means to put them into condition for use.

Although I have described and illustratet my invention in considerable detail, I do not wish to be limited to the exact and specific details thereof, as shown and described, but may use such modifications in, substitutions for, or equivalents thereof, as are embraced within the scope of my invention, or as pointed out in the claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A sink-head top comprising a metallic casing, ribs extending inwardly therefrom and bricks fitting therein with their edges adjacent to said ribs, thereby forming a sink-head top, open at the top and bottom.

2. A sink-head top comprising a metallic casing, ribs extending inwardlv therefrom, a shelf or supporting portion near the bottom thereof, a flange downwardly projecting from said shelf, and a lining-formed of a plurality of bricks mounted Within with their edges adjacent to and secured by said ribs.

3. A sink-head top comprising a metallic casing, ribs extending inwardly therefrom, bllCKS mountedwithin said casing with their edges resting against and supported by the sides of the ribs aforesaid, and luting between the adjacent edges of said bricks.

4. A. sink-headtop comprising a metallic casing adapted to set on top of an ingot mold, a downwardly extending flange projecting within the top of said mold, adapted to maintain the casing thereon, ribs extendin from the inner corners ofsaid casing, bricks with beveled ends fitting within said casing, their beveled ends contacting with and supported by the ribs aforesaid.

5. The combination with a sink-head casing of the character described, of a plurality of bricks, mounted therein, of truncated wedge form with beveled edges, adjacent but spaced apart.

In testimony whereof I hereunto ailix my signature in the presence of two Witnesses.

DAVID D. BUCHANAN.

\Vitnesses:

FRED A. STAHL, ELMER SEAVEY.

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