US2362696A - Ingot stripper - Google Patents

Description

Nov. 14, 1944. o, wELy 2,362,696

INGOT STRIPPER m Filed March 13, 1944 4 Sheets-Sheet l Nov. 14, 1944.

4 Sheet s-Sheet s 7 ML v. 5 w 2v J a TM 2 4 nvv 3 6 J 9dv NOV. 14, 1944. Q Q V Y 2,362,696

INGOT STRIPPER Fil ed March 13, 1944 4 Sheets-Sheet 4 Patented Nov. 14, 1944 Ossian Hively, Alliance, Ohio, assignorto Mor-.-. gan Engineering Company; Alliance, Ohio, a

corporation of Ohio p ca n ar h. 13, Ser al o- 338 (ct 22,:95.) hi ntenti n r l tes toimn vem nts n n o litclaims.

Str b e s and m r be itio arlx to 8-. no e str p nor of he ver ed ime.

My improved stripper is adapted for use with ith hot. tor. flush. on in ot r any th y e i n o s ca t hat ar known as. big n p, tyn molds, nd a e str ed. by eans i. a. ioneer bein or ed u ward t itoush an pe tur thebo tqm'oims mo d.- si k:

hea gots. on par ial fill d molds, a stripper of i ype s ab ut he only actical one.

A number of d o s ng inverted. ipe were o the. bov .mentioned. type oi moldst nd in ot have been issued. In m em strip er. as. nstalled beneath the ingot can tr t s.v a d. as the ca s; arr n h t. molds pas ed. overthe str ppe the ejecting plun r entered thev aperture; in the. bottom of the. mold through an opening in the car floor. To: my knowledge, no, one. ever built; a. stripper as described. insuch patents, probably because it would require special ingot mold cars, which would not be justified. considering the relatively mal oet enta e of steel poured in this type. i?

' m ld, p. to. Present. time. While consider-.-

able steel is.- noured in .bigy end up" molds,.it is poured with the upwardly. projecting hot top,

- drawings, and the appended claims. i

In the. drawings. in which a preferred'embodiment of the invention is shown for purposes ot illustration:

Fig... 1 is. a. vertical: sectional. view of nay-improved; stripper with the. links or tongsliniu'lly open, position.

Fig. 21s. at. similar View with the links in extreme closed position, Fig, 3isanother vertical sectional: view with thelinks engaged. with a mold and with the ram or plunger readyltostrip the ingot.

Fig. 4 is a. side elevation ofithestrippen Fig. 5; is a. horizontal: sectional view. taken on he fillets-blot Fig. 2.. l

Reformat tothe drawin s 1 isnatesa frameadapted to. rest. on a, suriace at the top. of a pit 1- D pen ns from the tr ms a. pai of y i ders 3. adapted to, be constantly supplied with a p ssure m di mubde aco nt pressur pre A er b H me plant. a cumu ato ot sho n s ons w en into h inders a d ave their lower ends, in Contact with ears. 3b at oppos. site sides of a. vertically movable. cylinder 30. Posts 4 are movided. withilanges 4a, resting on t o oi the ears and-[the s s ar r g dl sw e n l ce by. nut 5 ngaging-the. thr aded ow ends 5 of the posts. These postsare guided by be i g e ves-to t 'th ra e and are-'o lt connected at I. to. tongs 'l'a'ior movement about horizontal axes. Each tone is provided with a Weight d arm. 8. e 5) e din o m ve-tho -1 per endsoi the; tongs, toward one another. Each tone is. a o pro ided w h an a m. 1- hav n a pin 1.0. travelling inthe slot of a linkfl-d pivotally onne ted he tenet t ame h in s t e v te. w h a. a r isc qv plunger 9 that is connected to a piston; H1 h vi a p s n. we era ms the cyl nder 3 When the. piston el vat d the, m w l ass th o gh an n ttwrein e bo to r mo dto u or 1 b e orm m unted n; the irel .v

T e cy der 30- has oupperp ssa eway H and a lower passage ites v Lit-for; the introduction f a o essuremediuminto o he d c r e o said medium from the top and bottom Qf:-th&cy-1-. inder. Atthis point it will be; noted that the p ston rod 1- nt t dod w th a nutm normal-1y resting on, the; frame. l

Operation- T p n. he on s s that ng m ld. an be. p aced in s tioni brz st i ping. the Press r medium is introduced into theit'op, of the cylindes ac, above the piston, and as. n-ut [-3. prevents the rod from lowering, the. pressure in the upper part of the cylinde w ll u l an c se tbee im der, posts 4v and o es a: i t l he p ns To reach the top 012 the slots; in, the! 1inki 1d. At

thi os t n he Id. are. umcientlw sht pass over lugs; that the; bottom of the mold; and

ur h continued; unwatdmoxeme t of the sure medium is exhausted from the upper part of the cylinder 30 which allows the pressure medium in the cylinders 3, plus gravity, to lower the cylinder 30. As soon as this beings, the counterweights 8 begin to close the tongs, and they move in a closing direction until they come in contact with the mold. Their closing movement being arrested, the further downward movement of cylinders 3c pulls the links down and leaves them hooked onto the lugs of the mold which places everything in position for the ejecting action,

It is to be noted that now the cylinder 3c, posts 4, fulcrums 1, tongs la and their subsidiary attachments are all hanging on the lugs of the mold. Pressure medium is now introduced into the cylinder 30 below the piston and as the cylinder is held from going any lower, the piston Hid must raise and force the ram upward through the-aperture in the bottom of the mold and strip the ingot from the mold.

After this is accomplished, pressure is relieved from the bottom of the piston and the pressure medium is again introduced above the piston to withdraw the plunger to initial position and to raise the tongs until'the pins 10 engage the upper ends of the slots of the links Id and open the tongs so that the mold with the loosened ingot may be removed from the platform.

As a four-way manually operated valve may be employed to control the entry and discharge of the pressure mediuminto and from the ends of the main cylinder, it will'be appreciated that only three hand movements .of the four-way valve lever to complete a full cycle of stripping is required with my improved mechanism.

Startingwith the lever at neutral, its first movement introduces pressure medium above the piston lfla'and at the same time allows exhaust from below the piston. Its second movement is to introduce pressure below the piston and allow exhaust from above the same. Itsthird is the same as the first movement.

From the foregoing, it is believed that the construction, operation, and advantages of my improved stripping may be readily understood by those skilled in the art, and I am aware that changes may be made in the details disclosed without departing from the spirit of the invention as expressed in the claims.

What I claim and desire to secure by Letters Patent is:

l. A stripper of the character described, comprising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and downwardly movable supporting means guided by the frame, means for limiting downward 'movementpf the supporting means relatively to the frame, tongs movably connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging anddisengaging the lugs of the mold, a cylinder carried by the supportin 'means and arranged below the frame, 'a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement'of the piston rod relativelyto the frame, and means for causing said tongs to open and close dueto movement of the supporting means. ,1 i

2. A stripper of the character described, com prising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and downwardly movable supporting posts guided by the frame, means for limiting downward movement of the supporting posts relatively to the frame, tongs movably connected to the upper portion of the supporting posts and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by the supportmg posts and arranged below the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston.

rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement of the piston rod relative to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

3. A stripper of the character described, comprising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and downwardly movable supporting means guided by the frame, means for limiting downward movement of the supporting means relatively to the frame, tongs pivotally connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by the supporting means and arranged below the frame, a piston in-the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

4. A'stripper of the character described, comprising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and'downwardly movable supporting .posts guided by the frame, means for limiting'downward movement of the supporting posts relatively to the frame, tongs pivotally connected tothe upper portion of the supporting posts and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by thesupporting posts and arranged below the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting, downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

5. A stripper .of the character described, comprising a frame, means abovexthe frame adapted tosupport a mold having externallugs and an aaeaoee 3- opening in its bottom, upwardly and downwardly movable supportingmeansguidedby the frame, means for-limiting downwardmovement. of the supporting means relatively to the frame, tongs movably connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylindercarried by the supporting means and. arranged below the frame, a piston in the cylinder, means for introducing a pressure medium: into the cylinder above and below the piston; and for discharging the pressure medium from the cylinder,

a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, means for constantly urging the tongs into closed position, and means for causing said tongs to open due to movement of the supporting means.

6. A stripper of the character. described, comprising a frame, means above the frame adapted to support a mold having external lugs and an opening inits bottom, upwardly and downwardly movable supporting means guided by the frame, means for limiting downward movement of the supporting means relatively to the frame, tongs movably connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by. the supporting means and arranged below the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, means for constantly urging the tongs into closed position, and means operatively connecting the tongs to the frame whereby upward movement of the supporting means will cause tongs to open.

'7. A stripper of the character described, com,- prising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and downwardly movable supporting means guided by the frame, means for limiting downward movementof the supporting means relatively to the frame, tongs movably connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by the supporting means and arranged below the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure mediumfrom the cylinder, yielding means for constantly urging the cylinder downwardly, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

8. A stripper of the character described, comprising a frame, means above the frame adapted tov support: a vmoldzhaving: external lugs and. an opening in its bottom, upwardly and downwardly movable supporting means guided. by the frame, means for limiting downwardmovementof: the supporting means relativelyto the frame, tongs movably. connectedto the upper portion of the supporting means and having upper, ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by thesupporting means and arranged below the frame, a piston in the cy1-,- inder, means for introducing a pressure medium intothe cylinder above and below the pistonand for discharging the pressure medium from the cylinder, auxiliary cylinders: connectedv to the frame, plungers secured to the firstmentioned cylinder and extending into the auxiliary cylinders, a piston-rodconnected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through the opening in the bottom of the mold, means for limiting downwardmovement of the piston rodrelatively to the frame, and means for causing said tongs to open andclose due to movement of the supporting means.

9. A stripper of the character described, comprising a frame, meansabove the frame adapted to support amold having external lugs and an opening in its bottom, upwardly and downwardly movable supporting means guided by the frame, tongs having lower portions pivotally connected to the upper portion of the supporting means, and having upper ends movabletoward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by the supporting means and arranged below the frame, a piston in the cylinder, means for introducing a. pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and adapted to pass through th opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

10. A stripper of the character described, comprising a frame, means above the frame adapted to support a mold having external lugs and an opening in its bottom, upwardly and downwardly movable sup-porting means guided by the frame,

means for limiting downward movement of the supporting means relatively to the frame, tongs movably connected to the upper portion of the supporting means and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder carried by the supporting means and arranged below the frame,\a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod, arranged between thetongs and adapted to enter the opening in the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means. i

11. A stripper of the character described, comprising a frame, means above the frame adapted to support a7mold'having'e'xternal lugs and an opening in its bottom, upwardly and downw'ardly movable parallel posts guidedby the framd'tc'mgs having lower ends pivotally' connected to the upper end portions of the posts and having upper ends movable toward and away from one another for engaging and disengaging the lugs of the mold, a cylinder positioned between the posts and having oppositely disposed ears'rigidly secured to the lower end portions of the posts, means for limiting downward movement of the posts relatively to the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and extending upwardly therefrom, a ram carried by the piston rod and extending upwardly between the tongs for entry through the opening in-the bottom of the mold, means for limiting downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the posts.

12. A stripper of the character described, comprising a frame, upwardly and downwardly movable supporting means guided by the frame, tongs connected to the supporting means and arranged at one side of the frame, said tongs having ends movable toward and away from one another for engaging and disengaging the lugs of an ingot mold, a cylinder secured by the supporting means andv arrangedat the opposite side of the frame,

means forlimitin'g movement'ofthe' supporting means away from the frame, a piston in the cylinder, means for. introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cylinder, a piston rod connected to the piston and'extending toward the tongs, a ram carried by the piston rod, extending between the tongs and adapted to enter a mold gripped by the tongs, means for limiting movement of the piston rod in one direction relatively to-the frame, and means for causing said tongs to open and close due to the movement of supporting means.

13. A stripper of the character described, comprising a frame, upwardly and downwardly movable-supporting means guided by the frame, tongs movably connected to the upper portion of the supporting means, and-having upper ends movable towardand away from one another, a cylinder carried by the supporting means and arranged below the frame, a piston in the cylinder, means for introducing a pressure medium into the cylinder above and below the piston and for discharging the pressure medium from the cy1 inder, a piston rod connected to the piston and extending upwardly therefrom, means for limiting'downward movement of the piston rod relatively to the frame, and means for causing said tongs to open and close due to movement of the supporting means.

OSSIAN HIVELY.

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