US1386702A - Ladle - Google Patents

Description

J. H. GRAY.

LADLE.

APPLICATION F ILED NOV.15, 1918.

1,386,?Q2 a Patented Aug; 9, 11921.

2 SHEETS-SHEET l.

0 IN l/E IV TOR James b. Gray AM M, ATTORNEY J. H. GRAY.

LADLE.

APPLICATION FILED NOV. 15, I918.

Paten Aug. 9, 19211.,

2 SHEETSSHEET 2- James Hfiray JAMES H. GRAY, OF NEW YORK, N. Y.

LADLE.

essence.

' To all whom it may concern:

Be it known that 1, JAMES H. GRAY, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Ladles, of which the following is a specification.

- The vinventionrelates to ladles for molten metal such as are commonly used in steel plants for transferring the molten steel from one point to another or from a furnace to the ingot molds and for pouringthe steel into such molds. It is common practice to use ladles of different sizes, some containing as much as one hundred tons ofsteel. They are usually provided with a nozzle in the bottom through which the steel flows and a stopper'which may be raised and lowered from the outside to cut off or permit the flow of steel. Trouble is frequently experienced with such nozzles and stoppers.

The latter sometimes leakso that steel is spilled and wasted; or the stopper freezes to thenozzle making it difficultor impossible to open. It is good practice tohold the steel-in the ladle for a certain-length of time-to reduce it to a proper casting temperature andifor other purposes; but in thus-holding the ladle the heat of the steel mayburn off the stopper rod, thus causing trouble and loss of steel and possible injury tothe men. To avoid these disadvantages and to facilitate the holding of the steel in the: ladle as long as may be desired I provide a ladle in which the nozzle (and the stopper and stopper rod where these are used) is outof contact with the steel. When the steel is to be poured it is only necessary to change the position of the ladle, which will bring the steel above the nozzle and permit-pouring inthe usual way.

The accompanying drawings illustrate embodiments of the invention.

Figure l is a vertical section of a ladle in pouring position;

Fig. 2 is a plan of such a ladle in upright position, that is in the position in which it.

is used to transfer metal;

Fig. 3 is a vertical section of a different form of the ladle, inpouring position;

Fig l is a vertical section of a third desi n of the ladle, in upright position.

11 each of the constructions illustrated the nozzle is located at one side and at a point above the metal when the ladle is standing upright and is filled to the usual Specification 01 Letters Patent.

Patented Aug. 9, 11921.

Application filed November 15,1918. Serial No. 262,667.

level; that is, when it is carrying its intended or desired quantity of metal. A cover or wall is arrangedbeyond the nozzle so as to form va pocket for the metal above the nozzle when the ladle is tilted.

Referring first to Fig. 1 the body A of the ladle is similar in design to ladles now commonly used, having trunnions B which are engaged by hooks when it is to be lifted and which may rest on pillars 0 when the metal is to be poured, and having an eye D on the bottom adapted to be engaged by a hook E for tilting it. This body portion of the ladle preferably stopper inits bottom but these may be pro 'vided for supplementary use if desired. On the upper end of the body of the ladle is mounted a pocket F constituting an extension of a portion of the'approximately cy lindrical wall of the ladle and shaped to form a cover which in the upright position extends transversely across a part of the mouth of the ladle and beyond a nozzle G "Which is formed in the extended side of the its upper end :from an arm J which extends.

down through a bracket K of usual design on the outer face of the pocket and which is manipulated by a hand lever L. The sup porting blocks C for the ladle are so positioned that the nozzle G will be brought directly over a line of ingot molds M carried on cars which are run under the nozzle so as to bring the successive molds into casting position. Each mold is filled by lifting the stopper, and then the stopper is closed and the next mold is brought into casting position.

here the entire ladle full of metal is to be poured at each operation a stopper may be dispensed with since the nozzle is normally above the level of the metal in the ladle. Such a construction is shown in'Fig. 3 for a ladle which transfers metal to a furnace N, pouring directly into a trough O ladle than in the construction of Fig 1. v

The ladle of Fig. 4 is provided with a his obliquely from the side of the bodyorlmain portion A of the ladle, thus leaving a greater clear opening for pouring metal into the pocket F analogous to that of Fig. 3 in having its'bottom P inclined outvvard With operation of pouringcan be resumed or stopped ithout'having to'tilt theladle for; 7

Ward and back .asin Fig. 3.1

In all these designs the. stopper rod andthe nozzle are outof the steel While'the ladle isfilled and is beingtransportedor is beingheld to perfect the steel; When this is done the ladle-is tilted to transfer the steel to a point above thenozzle and itremains there only durlng the time requiredforcast ng.

.- --;The stopper rod may be made -much shorter than usual, less than one-half in the design-shown in Fig. 1, Fora hundred ton;

ladle the common practicezis to use a stop;

per rod-jtwelve, feet-long; Whereas in my de'- sign 1t may beonlyzfive feet long. Aflonger i stoppeluis harderlto lhand-le'and to set'in V" than a shorter stopper.

proper position for closing and to maintain in such position, and tends to Warp more With my construction if it t found that ii the stopper leakswin turning theladle'over the latter may be turned back 'toa vertical designsshO Wntherhead "of metal above the at anfobjectionable rapid rate; It Will be,

position and: the nozzle readjusted 'In the nozzle in pouring: position is less than in the upright position; This is an advantage especially' in large ladles Where theferro-static pressure has been so great that the metal splashesigreatlyinthe mold and pours out understood, however, that theproportions may vary from those illustrated. in the design of Fig. 1v the ferro-static pressure is about one-halfthatof an ordinary l dl f thesame capa it p a V V e a The pocket may ladle, as inlligs. 3 and 4,-o'r it maybe detachably mounted thereon, as in Fig. 1,

Where the shells of the ladle proper and the pocket are shownprovided .with flanges Q fastened together at intervals by bolts B.

This construction may be used for conve'rt-' ing old ladles into the new type by merelyadding the necessary 'fla nge' around. a po'rv tion of: its lip, closing the old nozzle permanently or leaving it and'thestopper in as circumstancesimay demand.

It is important to prevent thepouringout i of the slag which floats on top of the metal,

' 1 Though I have V tioul'a'rity' of detail certain embodiments of laims;

especially when transferring from one furnace to another. QWhere no stopper is used, as "in Fig; 3, the metal is caused to flow quickly over the nozzle by sufiiciently tilting the ladle, thusraising the slag S above the nozzle; When the steel, T is all out ofthe ladle and the slag begins to flo-vv the ladle is quickly dropped back to an upright posi-, tion, so as to retain'the slag, With astopper, as in Fig-4; the nozzle is "opened'and. the steel allowed to i'lowiuntilthe slag an riv'esat the nozzle, whereupon it is closed by the stopper."

described vvith' great pal-i my invention yet it is not to be understood therefrom that the invention is restrictedt'o v the embodiments disclosed. Various fications thereof indet'ailand in the arrangement o'f the parts may be'madel'bylthoseg skilled inthe art Without departure "from the invention as defined the following What-I claim is- I i 5 ll-"A ladletor moltenmetalhaving a nozf zle in an upward extension at oneside at a. point abovethe usual level of the metal When the ladle is-upright and-having a, overns wall beyond-"said nozzle forming apocket forthe metal; when the ladleis tilted and a stopper for said jnozzl'e'iextending trans ladle is-thusftilted. I v "-2. k ladle for'molteii metal having tachable pocket-section bolted to its upper nozzle for pouring the metal in this position,

:x 'ersely'1 across the ladle and supported in V 'verticahp'osition' by said: cover "when the V end adapted'to-receive -the'inetalf from the ladle when the latter is tilted and'h'aving a A ladle comprising'a metallic shell hav'- ing an inner lining of refractorymaterial,

an oute rim secured'to the uppenedge of said shell and a detachable pouringsection having metallic shellsecure d to said rim tion'being adapted, to receivethe molten metal when thefladleisfltiltedftopouring be a vfixed part ofthe;

said section being above the usual metal-level; and having a Wall 'Whichove'rha'n'gs approxiinately' 'one halfof "the top of" the ladle vWhen it is upright, saidsection being adaptedflto receive the metal when the ladle is tiltedr In witness'ivhereof I have hereunto signed my name." i

*J MEs rain]- Which is provided with a stoppered nozzle,

105 and lin'e'dwithrefractorymateriah'said sec- 7

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