US1258209A - Ingot-mold. - Google Patents

Description

E. GATHMANN.

lNGoT MOLD.

APPLICATlON FILED FEB. ll 1915.

1,258,209. Patented Mar. 5,1918.

2 SHEETS-SHEET I. 6' @l Z W I j y? 257257 QQM.

E. GATHNIANN.

INGOT MOLD. APPucATlN man res. 11. 191s.

Patented Mar. 5, 1918.

` 2 SHEETS-SHEET 2- UNITED sTATEs EMIL GATHMANN, 0F BALTIMORE, MARYLAND.

INGOT-MOLD.

Specication of Letters Patent.

Patented Mar. 5', 191s.

Application filed February 11, 1915. Serial No. 7,595.

To all whom z'* may concern.'

Be it'known that I, EMIL GATHMANN, a. citizen of the United States, residing-inthe city of Baltimore and State of Maryland, have invented certain new and useful Improvements in Ingot-Molds, ofwhich the followingis a specication.

This invention relates particularly lto molds for casting steel ingots and especially to the sink heads or feeders for such molds, but my improvements may be employed in connection with molds for forming other kinds of castings. y

In several vU. S. Letters Patent heretofore granted to me I have shown molds for casting steel ingots in which provision is made for conserving the heat of the molten metal at its upper portion and for promoting the cooling of the lower portion of the ingot or casting, and my improvements are especially intended for use in connection with such molds although they may be used in connection with molds of other desifrns.

U.' S. Letters Patent have heretofore been granted to me for improvements in sink heads or feeders which have been found to be very useful and to assist materially in the formation of sound ingots,

and the object of my present invention is to improve the construction of such sink heads or feeders, and to provide novel means for holding them in place.

According to my present invention I form the sink head or feeder of suitable refractory material such as fire brick and construct it in sections which may be readily molded and baked, and I provide novel means for holding these sections in place when applied to a mold.

My invention also involves means for preventing the formation of laterally projectingns on the ingot which would tend to impede or prevent the stripping of the in ot from the mold.

In the accompanying drawings Figure 1 shows a vertical central'section through an ingot mold and feeder, embodying my improvements.

Fig. 2 is a plan view thereof. l

Fig. 3 is a perspective view of one of the feeder sections.

Fig. shows a vertical central section throu h the upper part of a mold and feeder lembo ying my improvements in a modified form.

Fig. 5 is a top view thereof.

Fig. 6 shows a vertical central sectionl struction, either a. big-end up or a big-end down mold or a mold having a cavity whose cross section is uniform. The drawings show a big-end down mold whose walls are made thicker in their lower portion in order to absorb heat more rapidly from the lower portion of the ingot than fromthe upper portion thereof, while the neck of the mold a has relati\ ely thin walls and is therefore less absorptive, thus serving to conserve the heat of the ingot at its upper end. The mold Y lmay be formed with ears a to facilitate in lifting it. v .y

The `feeder B comprises a feeder proper Ba; and a surrounding casingBt y ing is preferably made of metal while lthe feeder proper is preferably made of re brick or of other suitable refractoi'yinsul'ating material. 'The base b4 ofthe casing is The cas- Y' adapted to rest on the top of the moldiA. i i

Said base `is formed with a downwardly proj ecting ange or bead y which preventsithe molten metal from passing out laterally over the top of the mold and under the base p of the casing. In this way the formation of a iin which would impede the strippin of the ingot from the mold is prevente The side walls b3 of the casing' may be slightly flared, a's shown, and air inlet opengings b2 are formed in the base of the casing for a purpose hereinafter described. TheA^ feeder proper, as before stated, is made in sections of refractory material. Preferably four such sections b5 are employed having mitered joints z, as indicated. Each feeder section is also preferably formed with enlargements or bosses b to receive set screws C, extending through threaded openings in the casing B and engaging said bosses. By adjusting the set screws the feeder sections may be pressed closely together at the joints. Instead of using set screws I may employ wedges C', as indicated in Fig. 2, for a simi-i lar purpose. It will be observed that the x cavity of the feeder tapers from its lower end upwardly so that after the ingot is formed the feeder may be lifted and stripped from the ingot, and it will be further observed that there are no such shoulders in any part of the feeder as would prevent it from being stripped from the ingot. The exterior'diameter of the feeder is considerf ably less than the interior diameter of the casing, thus forming a chamber H which may receive insulating material or fuel which may be. ignited and fed with air through the openings b2. In this way the radiation of heat from the upper portion of the ingot may be delayed, and therefore the molten metal is maintained in a fluid conthe purpose hereinbefore described.` Thethe inold cavity and serving the same purl pose as the ange or bead y shown inF ig. 1. The cavity of the feedertapers upwardly for casing D? in this case is made integrally with theV mold A.v It is' provided with airy linlet openingsd3 and it` carries set, screws E similar to thosebeforedescribed and which serve to hold the feeder sections in close contact with eachother at the shouldered jointsy. There is a chamber I between the feeder and the casing D4 which may contain insulating lmaterial or fuel, for the purpose before described. In other respects the mold "and feeder are similar tothose shown in Fig. 1 of the drawings. By these improvements the feeder may be economically made and may be readily and securelyy attached to the mold or supported thereon. .The means employed for holding the feeder sections `in place being adjustable good joints are assured. The formation of tins is prevented andthestripping -of-the ingot from the'mold is facilitated.

I'usually apply lutinglor fire clay or like -material between the flange y and the adjacent mold wall and a similar luting may be applied between the iange a: and the casing. Such lutin'g 'is employed when 'any roughness is present at these joints.

It will be understood that a distinct advantage is gained by making the feeder in sections andy joining them at the corners. The sections may be very readily molded and baked much more easily than if the feeder is made in one solid piece, and a better joint or union can be obtained at the corners than elsewhere. Furthermore, this construction permits of a more efcient cen-A tering of the feeder sectionsl in the top of the mold. In use the feeder expands when tion so that a close contact may be obtained p at each joint.

I claim as my invention:

1. The combination with an ingotI mold, of a feeder resting on the top of the mold and formed in four sections joined at the corners, each of saidsections having a downwardly projectingiflange or bead at'the base' extending into the mold, a metallic casing for said sections, and adjustable means for holding the'feeder sections in close contact 'with each other.

2. The combination with an ingot mold of a feeder made in sections joined at the corners and provided\with a downwardly projecting flange or beadr at the base, a casing surrounding the feeder, and adjustable means interposed between the casing and thev feeder for holding the feeder sections in position. l j

3. .The combination with -an ingot mold of a feeder therefor madein sections joined at 'the corners and removable from the mold, and adjustable means acting independently upon each section for holding said sections in contact with each other.

4. The combination-[with an ingot mold, of a feeder resting on the top ofthe mold formed'in sections joined at the corners', each of said sections having a downwardly lprojecting ang'e or beadV at the base extending into the mold and independently adjustable means operating upon each section for holding the feeder sections in close contact with eachother at the joints.

5. The combination with an ingot mold of a feeder therefor, refractory material joine metallic casing forsaid sections resting on the top of the mold and removable therefrom, and adjustable means carried by the casing and acting independentlyfupon each section lfor Vholding said sections in contact with each other.

6. The combination withv an ingot mold of comprising sections of at the corners, a

a feeder therefor, 'comprising a vmetallic:

ing resting on the'top of the mold and a plurality of sections of refractory' material within the casing supportedby the casing and joined together at their vertical'edges adjacent to the corners thereof and removable therewith from the mold, each of said sections being continuous or inone unbroken .piece from topto bottom.

' 8. The combination with an ingotfmold of a feeder therefor, comprising a metallic casing resting on the top of the mold and a plurality of sections of refractory material within the casing supported-by the casing and bevel-jointed together at their vertical edges adjacent to the metallic casing corners and removable therewith from the mol-d,

subscribed my name.

each of said sections being continuous or in one unbrokenpiece from top to bottom.

9. The combmation with an ingot mold of afeeder therefor, comprising a metallic cas- 20 ing resting on the top of the mold, and sec- .tions 'of refractory non-conductin material within the casing supported there y and re? movable therewith from the mold, each of said sections being continuous or in one un- 25 broken piece from top to bottom.

In testimony rwhereof, I haveI hereunto j EMIL GATHMANN.

-Witnesses:

MAMIE MEwsHAW, JOHN S. REID.

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