US2587110A - Bottom tap ladle mechanism - Google Patents

Description

Feb. 26, 1952 E w. CARTER BOTTOM TAP LADLE MECHANISM Filed Nov. 23, 1949 FIG.'3

INVENTOR. Edwin W. Garter Patented Feb. 26, 1952 UNITED PATENT I OFFICE inye tion ne1 t s:

ladlee, for han gil-ing o n: ta a di ik ko hee h yi e b qzattom opening for the discharge: 6f; the lo iil ea contents; and is more partieuleply dire qtegi to the{ provision of am improved; mechanism ions ope. porting the plug; employed i013: stealing; the bot; tom-opening.

Bottom; tap ladles as they: are: termed by the. foundryindustry, are; considered highly: desirable.

pantieularly. b5;- steel foundties', for several; reasons,

such as th v r ual, xc us o a rom; he

molten metal, digeherged through; the lzbc vttorxi; p ri g op n ng T ese ladies sually empl ye 7. long refractory plug extending upwardlyfigomthgg;

pouring hole in the bottom of the ladle. thpough e. dle. to egpos neck. w ehz s, seeuted tome. p us above.- he d e; h nd s uppor d y re ciproc ting me hanism mo n d Q h outs de f e adle.- Bx @QWQQQQWQ e ipr at ng m Q hI -i e te: m x ai ehda q er t plug, thus opening and ologing the bottom pour;

' Opening,

The, vertical legof thegooseneclg is; usuallycar ful m n d: to mm x.v a lon a er hav ng; an an le of five de rees; or ess-w t es ecto theax s o he eg, and s e e yefi hm QOIIEQSPOBQ1 ingly machinedope ning in a: b 'acket mounted on the e p o ting m eh is Th h er S 7- face is, usually quite. long, since thQ Parts am he a d mus h aceur ly e d. flIlQSifiQIl- This type of n ct on. has: l ven ou le ome n pmcti e ecause qirits en e y o; freeze. as,

for, example by rusting of the. su faces or thefipe usion Q eig ma Q i l-o io ent ammenine.

as, well as.- the expe diture of. c nsid ab e; tim

and: fiorti s: freq n ly ecessex o r mq ethe gooseneck from the reciprocating meehanjsn as i r exemplewhen lin ng or the ladl i tqvbe. dr ed. In. ad ition he lone anereqs x:

fac som both, difficulil and expeneive to, rgaohige and maintain.

Theprimaliy o jec of my int ntion is to, pipe vide a bottom tap foundry ladle having: improved connecting means for eemombly sopporting the gooseneck on the reciprooatipg. mechanigm', whiqh wil accur tely hol t e go se i ck in p sit on b h c p mits remo o the o ehech a a l;

times. ithoutdimcolty also whi h, moth r 4 o preci iq machinin other objects m in enti n lllllQQthQQIQ.

vision of: var ous ho el. c m onents; ahdts's'tme l hed o min hei ht ht Qf' g a h s? oh. the ot er f; 5. tea

2 ottom an fqun rt e nqotpomt ne m ven i zty R 2. Pa t y c i ed; eva i n of n l q e tih l m c an m i1 i te io g- 1;

' T g;-v sa ban ll sect onedelevatio conne n-be ween the e o' e e and he 1;

q atineimechanisma Fig l.i a pa t a qr sfiec iqn o h tztat in' a modiflcaltion 'of a portion of the, gooseheo L Ei 5- 5. a a al toesl tect oh: h ou h a mo h:

hcl he eq lqc hem cham o mh ef; the bi t o my nv n on 3& t h

hea on in ht q sti h h'im e a'it l h l ut .9h ce SQQt OR e etewh q i ms n le o no ess than .0. i re not mor t at. ,0 de rees; wi h. ehxi Qt .9 @Q prefer:

a i o lne fixed hh reglmfqh ih meqha; mism Abo e he i pt L oz? brath t 1 ot rolihmt et v ng a c l nd hal bo the L- ivet ei y nd ziqelportim Q thel a; I

s: m nded w h at I $i=QQ1l Q esslqh h, tsi u p tace, imme iate y ur ou di he We o dr l bot in hi .-:1.1v he must I whit lgse -r ib oi the ver i o lee e t hisJ b hhqtioh o s h eons-ena t. firm y in hq itioh and hin the. up ht eg tor-minnows in lignm nt w th th tq mfihfin m hanism; Pite 1l how te a the q ene' h ma b asily REM- 64 at any time without effort.

t Myinventiop l ustm e r a e deta l h d w i whe z i i hav own a he ted. no in a shel m h tt '3 n wh it -Qrme h he lle.v in i at d t t. The lin n 2. os t ent qhal e mctqr 'ma t l a an n e t pl ced. i the penin l4 and ha i an ax a enin t fl r n a t uhp r. e d o ieq e e o end-o a plu 8, The plug it includes at refractory cover l9 e elop a cen a m ta od 1. which QKW QS- 9W /l hteugh the l ql [Q o P in hhve he loq e ip-v A oose eth 5 h? vlll 'd ei hatedo 2. s terme oi: a a e ally. ezstmiht leg -3 and ve r a eet nemlhv e goa eq 4, Theate ally.- extending leg 2.3 is mm with an o en n its. nst h ough which the ro 2' ex e hth ee e t the od he @12 o. old the ater firmly n Po tion o the. e. a t

28 which is attached as by welding to the ladle shell Reciprocally mounted in the frame 21 is an upright slide 29, the lower end'of which is secured to a rack 3|. A gear 32 pivoted to the frame 21 engages the rack 3| and is secured to a lever 33 by means of which the gear 32 may be rotated to raise and lower the rack 3| and the slide 29. A threaded eye-bolt 34 extends through the frame 21 and is pivotally secured at its inner end to a bracket 36 welded to the shell H. A wing nut 38 is threaded to the bolt 34 and engages the frame 21 to tilt the assembly as desired. A threaded lock bolt 39 may also be provided in the frame 21 for engagement with the slide 29 in such manner that rotation of the lock bolt 39 causes the inner end of the bolt to engage the slide 29, thus holding the latter:

in position.

A lateral bracket 4| is secured to the slide 29 near the upper end of the slide, and is provided with a cylindrical bore; indicated at 42, preferably having an axis parallel to the axis of movement of the slide 29. Immediately below the bracket 4| is a pilot bracket 43 in which- I form a relatively small opening in axial alignment with the cylindrical bore 42 in the bracket 4|. A frusto-conical depression, indicated at 44, is formed in the upper face of the bracket 4| immediately around the bore 42, the sides or faces of the depression forming an angle of between 10 and 80 degrees and preferably about 45 degrees with respect to the axis of the bore 42.

The vertical leg 24 of the gooseneck 22 includes a cylindrical section 46 machined to fit snugly in the bore 42 and an inverted frustoconical section 41, which mates with the depres-. sion 44 An axial pin 48 is formed on the lower end of the leg 24 and engages the openingjin the pilot'bracket 48. The parts are dimensioned in such manner that theweight of thefgooseneck 22 is carried entirely by. the bracket 4| and particularly by the facesof the inverted frusto conical depression 44. Extending through the leg 24 near the lower face of the bracket 4| is'an opening 49 shaped to receive a tapered key ('not shown) by means of which the gooseneck 22 may be drawn down into the brackets 4| and 43 and held firmly in position until such time as it is desired to remove the gooseneck. A

shield 5| may be secured to the laterally extendingleg 23 and projects downwardly between the slide 29 and the shell ||,"thus shielding the slide from the destructive influence of excessive ra-;

diant heat.

As shown in Fig. 3, I may utilize a pilot bracket 52 having an upwardly extending pin 53' disare ininverted position. In someinstances, hoW-' everfit is preferable to utilize upright frustoconical sections shown in Fig. 5. When required,

therefore, I may substitute for the bracket 4| a bracket 54, having cylindrical bore 55 and" an" upright conical section 51 formed 'on' the up er of the bracket. immediately around the mouth of the bore 56. The vertical leg 24'is provided as before with a cylindrical section 58 and with an upright conical cavity 59 shaped to matewith the conical section 5! in a' manner e previously described. It is essential that the face of the conical section form an angle greater than 10 degrees with the axis of the cylindrical bore 56, and will preferably be approximately 45 degrees.

In operation, the gooseneck 22 is lowered into the position indicated in Fig. 1, wherein the frusto-conical sections firmly engage each other and the lower. end of the vertical leg 24 is in engagement with the pilot bracket. The plug I8 is secured to the lateral arm 23 and a tapered key is driven into the opening 49. Once the parts are in satisfactory alignment the plug may be locked in position by operation of the lock bolt 39 which engages the slide 29. When it is desired to open the bottom opening, the lock bolt 39' is released and the lever 33 actuated.- This raises the slide 29, carrying with it the gooseneck 22 and the plug I8.

To remove the gooseneck 22, the tapered key is removedfrom the opening 49 and'the'go'oseneck 22 lifted-from the brackets 4| and 43. No difliculty will be experienced in performing this operation, since even in the presence of rust and foreign material binding will not occur between the lateral bracket 4| and the vertical leg 24 of the gooseneck. When the gooseneck 22 is again fitted'to the slide 29, the vertical leg 24 will assume the same position as previously, since wearis automatically compensated by the frusto-conical sections. Considerable economy will'be effected in forming the component parts, since the l careful machining necessary to form a long taper is e liminated.

ls t. 1. In a bottomtap ladle for molten metal and right leg having a cylindrical section and a frustofcon'ical section above the cylindrical section,

the face of the frusto-conical section forming an angle with the axis of the upright leg of approximately 45 degrees, a lateral bracket on the reciprocating member having a cylindrical opening for receiving the cylindrical section of the up-- right leg, and a frusto-conical upper face for engagement with the frusto-conical section of the upright leg, and a pilot bracket on the reciprocating member below the lateral bracket, said'pilot bracket including a vertical face disposed for engagement with a'mating substantially verticall surface on the lower end of the upright leg for approximately centering the upright leg in the lateral bracket.

2. Infa bottom tap ladle for molten'metal and? the like of the type having an,upright plu'g in' leg, said upright leg defining a frusto-conical:

bearing surface, concentric with the axes of the .bearing surface also concentric with said axes spaced'from the conical bearing surface, the re ciprocating member having spaced complemen-f tary bearing surfaces formed thereon for engagement with said conical and cylindrical bearing surfaces on the upright leg.

'3. In-abottom tap ladle formolten metal and the like of the type having an upright plug in the ladle and an upright reciprocating member on the outside of the ladle, the combination therewith of a gooseneck having a lateral leg for attachment to the plug and an integral upright leg, said upright leg defining a frusto-conical bearing surface, concentric with the axes of the upright leg, the face of said conical bearing surface defining an angle of not less than 10 nor more than 80 with said axes and a cylindrical bearing surface below the frusto-conical bearing surface, also concentric with said axes spaced from the conical bearing surface, the reciprocating member having spaced complementary bearing surfaces formed thereon for engagement with said conical and cylindrical bearing surfaces on the upright leg.

4. In a bottom tap ladle for molten metal and the like of the type having an upright plug in the ladle and an upright reciprocating member on the outside of the ladle, the combination therewith of the gooseneck having a laterally extending leg for attachment to the plug and an upright leg having a cylindrical section and a frusto-conical section above the cylindrical section, the face of the frusto-conical section forming an angle with the axis of the upright leg of not less than 10 nor more than 80, a lateral bracket on the reciprocating member having a cylindrical opening for receiving the cylindrical section of the upright leg, and a frusto-conical upper face for engagement with the frusto-conical section of the upright leg, and a pilot bracket on the reciprocating member below the lateral bracket, said pilot bracket including a vertical face disposed for engagement with a mating substantially vertical surface on the lower end of the upright leg for approximately centering the upright leg in the lateral bracket.

EDWIN WILLIAM CARTER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 229,953 Casperson July 13, 1880 891,542 Hassel June 23, 1908 1,207,251 Wettengel Dec. 5, 1916 1,212,860 Wettengel Jan. 16, 1917 2,531,556 Davis et a1 Nov. 28, 1950

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