USRE5317E - Improvement in stoppers for ingot-molds - Google Patents

Description

i* UNITED STATES ALEXANDER LYMAN HOLLEY, oF BROOKLYN, NEWYORK.

- -IMPRovEMEN-fr In sTosPEns Fos meot-Moms.

Specification forming part of Letters PatentV No. 129,957, dated July 30,

` March 1v1, 1873.

1872; lreissue No. 5.8.17,

Division A.

To all whom it may concern:

Be it known that I, ALEXANDER LYMAN HOLLEY, of the city ofv Brooklyn, county of Kings and State of New York, formerly .of Harrisburg, Pennsylvania, have 'invented a. certain Improvement in Apparatus for Casting Ingots of Iron and Steel; of which the following is a specification:

This invention relates to casting ingots or masses of iron or steel when the molds are iilled from thebottom; and consists in improved means for stopping the tops :of such molds at di'erent heights.

To enable others .to put these improvements into use, I will describe several 4formsof my invention reference being had to the aecompanying drawing forming part of this specification, iu whichv l Figure 1 is a vertical section of aggroup of ingot-molds tolwhich my invention is' applied.

Fig. 2 is a plan view of the same. Fig. 3 is a v plan view of a closed mold on a larger scale.

Fig. t is a vertical section on the line aa, Fig.

3, illustrating the application of a stopper. Fig. 5is an elevation of a stopper andl supportingpost as' shown in Fig. 4. Fig. 6 is a lplan view of'a blank of the form'o stopper shown in Figs. 4 and 5. Figs. 7 and 8 are vertical sections of downwardly-tapering molds with modified stoppers applied. Fig. 9 is a vertical section, illust-ratinganother modification. To' produce rails, axles, &c., of different weights, without making scrap in excess, in-

gots4 must be made of the 'various .suitable weights. To avoid the cost of different sets of ingoia-molds foreach required weight ofingots, itis desirable'to cast ingots of vanousweights, and henc'e various lengths, in the sameset of molds. My improvements consist in stopping od a mold at any required height by means thatv may be. easily and quickly applied, and iu such a manner lthat the ingot will not be likely to crack. One method of doing this is shown infFjg. 4, which. is a vertical section of a mold, E, and stopper F. The stopper isa .piece of vsheet-iron or steel, Fig. 6, with the edges turned up so as to form elastic flanges z,

and to appear in side eleva-tion as lshown, in

Fig.l 5. If the'inold E has-say, one or. two I inches taper, the'flangeslz may be bent 'so as just to enter the'large end or bottomof the mold E..4 The stopper is then set on a post, y

K, Fi 5,]the post being as long .as the requil ingot. The mold E is then raised and brought over the stopper and post, and lowered into ition, as' shown'in Fig. 4. The flanges z; w right angle by the tapering sides of the mold, and the' stopper will be thus wedged sulciently fast to stay/in place when the post isrelnkved. Before thepost is removed the o to i hemold above'the stopperF is iillexiwitiuA farsene -L'fbyprefe renee s lnatie-canin; and slightly rammed, A few small-say, one.` eighthl inch-ventLholesy are previously made.

in` ths"'stopper F, and vent-holes may be pricked l "f, y' A plate,M,is then sidon the ,4 dged down vthe'. usual` manger, The" quid iron'or steel will rise up a ne: the 09W the venteasily pull down the stopper The sand L prevents any nlof iron` or steel from run- -ning u y the side of the mold beyond the'stop- ,i per. thin llm ofe steel chillsy andacquires great tenacity while the body of the-ingot is still liquid and pasty, and easily pulled apart,

so that such a illm, hooking over the top of the mold or otherwise getting fast,'prevents the top part of the ingot from'coming down as the mass cools-and contracts, and thus theiu got is cracked. Incase the ingot-mold has very little orsno taper the dan in by hand,"w ile the are bein entered into the bottom off-,the mol These anges should in all cases-press hard enough against the sides of thefgfinpld to stay in place when the post is removed.,

Another method of stopping olf the ingetrnold at any height is shown in Fig;

' 7, in which E ieau ingot-mol d, and F'a castiron stopper, which may be placdjat any re- 'quired height in `the mold. In 'order topravent any iin of iron'or steel from runningfup,` the side of the mold beyond the stopperI/'illl the mold around and above the stopper, as at l PATENT (,)FEIe'E now have been bent more nearly to a F and the gaseswill pass. 0. through holes and the sand L. When the ingotthus formed contracts in cooling, it will sz of thev stopper may be bent` L, with loam orsand, by preference, rammed,

the mold and.

^ ning into the joint, the in got can contract with-v ble refractorymaterial, on the top of the flask or on the bottom of the mold before the mold is set upon the flask. The flaskshould be ystrikesit. The paste squeezed out from unit, the ingot being held fast bythe taper at shrinkage.

' metall stopper, A y mold, Additional weights Ol'parts to hold `lvented, and held down by a plate, M, Figs. 3 and 4, as before described. The mold E2 is placed on the flask with its large end upward. When the-mold is-lled with ironor steel, and the ingot thus formed shrinks', the upper end ofit cannot come down on account of the taper of the mold; but the sprue will -bend suciently to let the lower end of the ingot y rise asit shrinks; and thus, if thejoint between the flask, at-y, is tight enough to prevent the liquid iron or steel fromv run! out cracking. This joint maybe made tight in 'any suitable manner. I prefer a paste of fire-clay, sand, and plumbago, or other suitawarmth of the flask paste so as to pre# when the iron or steel warm when used, and the will very quickly drythe vvent its blowing der the mold may also, if necessary, be rammed into the jointy by a suitable tooli Ifthe mold were set on the ask with the small end upward, and this small end covered so that a iin of iron or steel could run and -hook over the large end, and by this 1in end would be likely to be. pulled at the small apart by the sheet- Fig. 8 illustrates the application of a F, to 'a downwardlye'tapering dow-nthisstopper may be added, if required. A ilu of iron or steel running past the form of stopper shown vin Figs. 7 and 8 will not cause crack so long las the joint yis ly the ingot to `in Figs. 4, 5,

`lic stopper, F, a loam or .a supportingplate, M, applied andsecured properly made; but I onl and about the stoppers to prevent the waste ot' iron or steel.

A modification of the form of stopper shown 6, and S is illustrated in Fig. 9, where z2 represents frictionsprin gs applied to a cast-iron stopper, F3, to support the same at different heights. y

The invention is primarily designed for molds arranged in groups and filled from central sprue-molds D, as illustrated in Figs. 1, 2, 7, and 8, but is not confined to this application.

What I claim, and desire 4to secure by these Letters Patent, is

1. The combination, with a bottom-casting' ingot-mold, of a suitable device or devices capable of stopping oli' the mold at various heights,

substantially set forth'. n A i d2. A stopper for ingotmolds, supported at as and for`the purposes different heights byelastic flanges or frictionsprings, substantially as herein described.

3. The iianged sheet-1etal stopper F for stopping 'off ingot-molds atk various heights, constructed andV operating substantially as described.

4. The combination of an adjustable metallic stopper and a loam or sand filling, L, above the same, as herein set forth.

5. .The combination of an 'adjustable metalsub'stantially as illustrated. v A. L. HOLLEY,`

` Witnesses: i

1. BARNES,

hun CUR'ris.

prefer to put some sand sand filling, L, and

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