US1288023A - Ingot-stripper. - Google Patents

Description

D. KENDALL:

INGOT STRIPPER.

APPLICATION FILED MAR.2|, 191a.

Patented Dec. 17, 1918.

3 SHEETS-SHEET I.

D. KENDALL.

INGOT STRIPPER. AFPUCATIQN FILED MAR. 2|, [SH 3. 1,288,023.. Patented Dec. 17,1918.

3 SHEETS-*SHEET 2- F' "*'1 D. KENDALL.

INGOT STRIPPER.

APPLICATION FILED MAR.2|, 191s.

Patented Dec. 17, 1918.

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I the parts indifferent ITED STATES PATENT OFFICE.

DAVID KENDALL, 0F ALLIANCE, OHIO, ASSIGNOR TO THE ALLIANCE MACHINE COMPANY, OF ALLIANCE, OHIO, A CORPORATION OF OHIO.

INGOT'STRIPIPER.

Specification of Letters-Patent.

Patented Dec. 17, 1918.

Application filed March 21, 1918. Serial No. 223,738.

To all whom it may concern:

Be it known that I, DAVID KENDALL, a resident of Alliance, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Ingot-Strippers, of which the following is a full, clear, and eX- act description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a sectional side elevation of an ingot stripper embodying my invention;

Figs. 2 and 3 are sectional end views with position s'in the two figures; and

Fig. lvis a detail view.

My invention hasrelation to ingot strippers, and more. particularly to strippers which are designed for use in stripping What are known as large-top ingots, that is to say, ingots whichhave a greater cross sectional area at the upper portion of the mold than at the lower portion. In strip:

. ping ingots of this character, it is necessary that the ingots shall be stripped by pushing them endwise through the top of the mold. My invention is designed to provide a simple, powerful and eflicient stripper for this purpose.

A further object of my invention is to provide a stripper of this character in which the gripping devices for holding the mold during the stripping are of such character as to readily adjust themselves to any inequalities in the mold lugs; will have a secure and powerful grip upon the mold; and will release to an open position, such as to permit the mold to be subsequently removed from the stripper. e

The nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof, and which will now be described, it being premised however, that various changes may be made in the details of construction, arrangement and combination of the parts, without departing from the spirit and scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 designates the stripping platform supported by a suitable framework 3, which preferably extends downwardly within a pit 4, in order to bring the platform at a convenient level. The upper surface of this platform is provided with suitable centering lugs 5 for the molds.

The numeral 6 designates a transversely arranged cross head which carries the up- Wardlyextending plunger or bull-nose 7, which is adapted to be moved upwardly through the opening 8 in the platform 2, and into the mold A, containing the ingot B to be stripped. This cross head is arranged to slide on the vertical rods 9, having suitable nuts or heads 10 at their lower ends, and each of which is connected at its upper end by a link 11, with a lever-12. The two levers 12 are pivoted to turn about the fixed centers 13 at opposite sides of the opening 8. Pivoted to the oppositearm of each lever 12 from that to which the link 11 is connected is a gripper 14, which is adapted to be engaged with a lug a on the ingot mold A. Each gripper 14 has an extension 15, below its pivotal axis 16. v

The numeral 17 designates a sheave block, which is suspended from the extension 15 of each gripper. In the particular apparatus shown, each sheave block has mounted therein three sheaves 18. There are two corresponding sets of sheaves 19, journaled to the cross head 6 at opposite sides of the plunger or bull-nose 7. Each of the levers I 13 has a lug or projection 20,'which is ar-' ranged to engage a corresponding lug or projection 21 on the adjacent gripper.

The numeral 22 designates a winding drum driven by a motor 23, through the gearing 24. 25 is a rope or cable which is connected at one end to one end portion of the drum 22, passing thence downwardly and over the two sets of sheaves at that side of the stripper. thence around an idle shaft or pulley 26. journaled to the central portion of the cross head 6. thence upwardly and around the other two sets of sheaves 18 and 19, its other end portion being connected to the opposite end portion of the drum 22.

The operation is as follows:

- The ingot molds to be stripped are brought to a pointadjacent to the stripper either on an ingot car or by any other suit- 1 of the parts, the entire weight of the cross open positions.

head 6 and of the plunger or bull nose 7 rests upon the nuts 10, at'the lower end of the rods 9, thus holding the grippers in their The motor 23 is now actuated to avind the rope or cable 25 on the drum 22. As soon as this Winding operation commences, the Weight of and plunger is transferred from the rods 9 to the upper sheave blocks 17, and from thence to the inner arms of the levers 12. This will at once move said levers from the position shoivn-in-Fig. 3 "to the position shown in Fig. 2, swinging the grippersinvvardly against the sides or" the ingot mold. As the Winding operation continues, the grippers are drawn down in a substantially straight line until they engage the ingot mold lugs, a. ll hile the grippers are thus being closed, the plunger or bull-nose 7 is moving,upwardly, and as the operation con tinues," the upper end or" the plunger con tacts With the ingot thereinand pushes said ingot partially outof the mold, shown inj dotted lines Fig. The ingot-can he held in this position inserting a suitable edge .0 between the ingot and the mold Wall, as also shown in said figure.

' Theniotor 23 is then reversed, slacking the 'i-*ope-or'eable 25, until the cross head 6 is again lowered into'contaetiwith the nuts 10, when the Weight is again thrown upon the rods 9. This acts upon the outer-arms of the levers 12 to move them to the position shown in Fig. 3, and asthe'y move-to such positions,:the lugs'QO thereon engage the lugs 21 on the grippers, and thereby positively force the grippers to move outwardly to their open position.

The ingot and mold can then be, removed, and the parts are ready tor "the next strip ping operation. It .Will' be readily understood that very powerful stripping action is, eXerted, inasmuch as the Winding ofthe ropes or cables upon the drum .22 gives a nearly direct up- Ward pull upon the plunger or bull-nose, While at the same time there is a down pull in direct lines upon" the grippers, causing them to exert a secure holding engagement on the molds. v I i By reason of the manner in which the rope or cable is arranged, it will be readily seen that the grippers will adjust themselves to considerable variations in the positions and height of the'lugs n," Thus, if one of these lugs should have its upper surface at a considerably higher point'than the other. the grippers will adjust themselves accordingly ithin comparatively ,vvide limits.

Inasmuch as the rope or cable is subjected to heavy strains and 'Wear where'it passes around the idler sheave,l preferably cut. it at its center and overlap the cut end portions in the manner shownin Fig. i, securing these end portions therunning parts which passes around the cross head naeaoes of the rope by suitable clamps 2'7. In this manner, that portion or therope'br cable the sheave 26 is suitably reinforced. 7 '1 It will be seen that-in the operation of the stripper, the Weight of the cross head and plunger is alternately transferred from the rods 9 Where it acts to open the grippers, to

the sheave or blocks 17, Where itacitf to does such grippers. lf'his mode of operation permits or" a very simple arrangement of the parts for openingand closing the grippers.

The. parts ean be made of greatstrength and are not likely to become injured or. broken in service; 4

it will ofeourse be understood that any suitable means may be employed for Wind} ing and unwinding the rope or cable,;that di'fierent systems of sheaves 'or pulleysniay be used, and that various other changes may be made Within the scope. of the appended claims. r A.

1 An ingot stripp or arge top ingo scomprising an upwardly acting-stripping plunger arranged to engage vthe lower end system of sheaves or pulleys mounted on the v;

carrier, pivotal mold grippers, another syn; tem of sheaves or pulleys suspended from said grippers, a winding drum, a rope or cable connected to said drum andengaging the systems of sheaves or pulleys, and connections whereby the Weight of the; plunger and its'carrier may be made to act upon the grippers for efiecting a releasing'movement thereof, or may be caused to act upon the grippers to effect an engaging movement thereon, substantially as described.

3. An ingot stripper for large top ingots,

comprising an upwardly acting movable plunger arranged to engage the lower end ofan ingot and push it upwardly through the opposite end of a mold, acarrier there for, oppositely arranged pivoted grippers arra g d ,t i gag opp s sides of an ingot mold, means for actuating the plunger tiens whereby the movemen of th a ier in one direction Will effect an engaging movement of the grippers and a reverse movement of said carrier will eflt'eeta releasto cause it to engage an ingot, and connee ing' m m o sai grippers, s bstan-' tially as described;

4. An ingot-stripping apparatus for large top ingots, comprising a suitable support tor the ingotlmoldj ingot a; plunge movable through said support and adapted to engage the smaller end of the ingot, a

carrier for said plunger, oppositely arranged pivotal grippers for engaging the ingot mold, a set of sheaves suspended from each of said grippers, other sets of sheaves on said carrier, a rope 01' cable engaging the sets of sheaves, a winding drum to which the rope or cable is connected, and connections adapted to be engaged by said carrier and thereby effect a releasing movement of the grippers, substantially as described.

5. Ingot-stripping apparatus for large top ingots, comprising a pair of oppositely arranged mold grippers, levers to which said grippers are pivoted, a set of sheaves suspended from each of said levers, a stripping plunger, a carrier therefor having two sets of sheaves thereon, a rope or cable engaging the several sets of sheaves, a wind ing drum for the rope or cable, and connections depending from said levers and adapted to be engaged by said carrier for effecting a releasing movement of the grippers, substantially as described. 1

6. Ingot-stripping apparatus for large top ingots, comprising two oppositely arranged mold grippers, lever members to which said grippers are respectively pivoted, a stripping plunger actuating mecha nism for the plunger, and means whereby the weight of the plunger may be caused to act upon opposite end portions of said levers to thereby respectively effect the engaging and releasing movements thereof, substantially as described.

7 Ingot-stripping apparatus for large top ingots, comprising a vertically movable plunger, a cross head carrying said plunger, oppositely arranged mold grippers, levers to which said mold grippers are respectively pivoted, and actuating mechanism for the plunger, comprising a flexible member operatively engaged with both the plunger and the grippers, and rods connected to said levers and adapted to be engaged by said cross head, substantially as described.

8. Ingot-stripping apparatus for large top ingots, comprising a vertically movable plunger, a cross head carrying said plunger, oppositely arranged mold grippers, levers to which the mold grippers are respectively pivoted, a set of sheaves connected to each of the mold grippers, two other sets of sheaves mounted on the cross head, a winding drum, a rope or cable connected to the winding drum and engaging the several sets of sheaves, and rods connected to said sheaves and depending therefrom, said rods having heads at their lower ends adapted to be engaged-by the cross head, substantially as described.

9. Ingot-strippi ng apparatus for large top 1ng0ts,"com pr1sing a vertically movable plunger, a cross head carrying said plunger, oppositely arranged mold grippers, levers to which the mold grippers are respectivel pivotedfa set of sheaves connected to eac of the mold i rippers, two other sets of sheaves mounte on the cross head, a winding drum, a rope or cable connected to the winding drum and engaging the several sets of sheaves, and rods connected to said sheaves and depending therefrom, said rods having heads at their lower ends adapted to be engaged'by the cross head, the intermediate portion of the rope or cable between the two pairs of upper and lower sheaves being engaged with an idler pulley or sheave on said cross head, substantially as described.

In testimony whereof, I have hereunto set m hand.

y DAVID KENDALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G."

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