US1226653A - Crucible-holder. - Google Patents

Description

M. w. GOLDBERG.

CRUCIBLE HOLDER.

APPLICATION FILED JUNE ML 1916- I I 1,226,653. Patented May 22, 1917.

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M. W. GOLDBERG.

CRUCIBLE HOLDER. APPLICATION FILED JUNE 26, 1916.

3 SHEETS-SHEET 2- ATTUIQ/Vfl Y5 n4: mums Pznws co Puamumm. WASHINGTON. o. c.

Patezited May 22, 1917.

M.'W. GOLDBERG.

CRUCIBLE HOLDER.

APPLICATION FILED JUNE 26. 1916.

1,226,653. v Patented May 22, 1917.

3 SHEETS-SHEET 3- 7 3x 5.

MAX W. GOLDBERG, OF MILWAUKEE, WISCONSIN.

GRUCIBLE-HOLDER.

1 '0 all whom it mag concern:

Be it known that I, MAX'W. GOLDBERG, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Crucible-Holders, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

The invention relates to ladle-holders.

The invention is designed more particularly to provide a holder for crucibles whereby said holder may be made to engage the crucible and may be operated to turn it to pour the molten metal therefrom. I

In present foundry practice when the ladles have been filled from the furnace with molten metal or when crucibles are ready to be transported to the place where the metal is to be poured two or three men are necessary to lift the ladle or crucible so that the usual form of circular band ladle holder with the trunnion arms or handles at the sides thereof may be placed in position to permit the band to be slipped up on the crucible so that hoisting mechanism and carrying mechanism may be connected to the arms of the holder for transporting the crucible to the desired place. The present invention is designed to obviate these difiiculties by providing a crucible or ladleholder or carrier in which the circular band is made in sections forming clamping jaws which may be spread apart to go over the top of the crucible or ladle and then be drawn together around the crucible by one man after which the hoisting and ladle conveying mechanism may be connected to the arms of the holder for transporting the crucible or ladle to the desired place, and one form of my invention provides a construction in which the holder may be low ered into the furnaces and the crucible removed therefrom by the conveyer mechanism under the control of a single operator.

The invention is further designed to provide a new and improved form of ladleholder.

The invention consists in the several features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings:

Figure 1 is a side embodying the invention,

elevation of the device parts being Specification of Letters Patent.

Patented May 22, 1917.

Application filed June 26, 1916. Serial no. 105,845.

broken away, and parts being shown in sectlon;

Fig. 2 Fig. 1; I

Fig. 3 is a detail view similar to Fig. 2, showing the clamping jaws in open posi tlon;

Fig. 4 is a section taken 011 line l4l of Fig. 1;

Fig. 5 is a side elevation of a modified form of device embodying the invention;

Fig. 6 is a section taken on line 6-6 of Fig. 5;

Fig. 7 is a section taken on line 7-7 of Fig. 5;

. Fig. 8 is a section taken on line 88 of Fig. 7

Fig. 9 is a section taken on line 9-9 of 1. ig. 7.

The device comprises, in general, a crucible or ladle-holder comprising a plurality of ladle clamping members 10 and 11 provided with handles or trunnions and means for operating said clamping members either when the device is separate from or combined with or carried by a suitable form of conveying mechanism.

The clamping member 10 is providedwith handles 12 and 13 which may also serve as trunnion supports when the ladleholder is mounted on a carrier frame of any suitable construction, such as the frame partly shown having hooked ends 14 for engaging the handles 12 and 13. In practice the frame shown is'generally connected up to a traveling crane to transport the crucible to different portions of the shop. The member 10 also has a semi-circular band portion 15 and the other clamping member 11 is a semi-circular band which is pivotally securedto the member 10 by a bolt 16.

The means for operating the clamping members comprises a long lever 17 pivotally secured at one end to the jaw or member 11 by a bolt 18 mounted in a clip 19 and a short lever 20 pivotally secured at one end to the member 10 by a bolt 21 mounted in a clip 23, said levers 17; and 20 being pivotally secured together at their outer ends by a rod 24 having a bent end 25 upon which said levers are pivotally secured, and means for moving said rod 24 to move said levers 17 and 20 to open and close the clamping members. The construction thus far described is common to both forms shown and the operating means for the two formsis a section taken .on line 2-2 of lever 50 and adapted to en differs slightly in arrangement and con structlon for reasons herelnafter described.

In Figs. 1 to 4 inclusive, the means for lever 26 to said rod 24. This linkage comprises a link 30 vertically swingingly secured to the lever 26 by a pin 31, a plunger 32 horizontally pivotally connected to the link 30 by a pin 33, a plunger casing 34 in which said plunger 32 is slidablymounted and'which is connected to the threaded end 35 of the rod 24 and a spring. 36 disposed in the casing between the plunger and'the end of said casing forms a yielding connection therebetween so as to prevent undue clamping strain when the jaws or clamps have been brought, into clamping engagement with the crucible for in some cases the lack of a spring connection would result in the breaking of the crucible. Means are also provided for locking the lever in different positions comprising a pawl 37 slidably mounted in a block 38 carried by'the lever, and adapted to engage a segmental rack 22 on the plate 28, said pawl being controlled through a rod 39 and a spring pressed handle 40 pivotally secured to the lever 26 adjacent the handle thereof.

It will be noted in the construction thus described the means for operating the jaws or clamping members is carried by one of said members and as'shown in Fig. 1 when the crucible and its holder are mounted on the frame the crucible may be tilted for pouring by rotating the members 10 and 11 within the hooked ends through a forward movement of the lever 26.

In the construction shown in Figs. 5 to 9 inclusive the means for operating'the rod 24 comprises a grooved collar 41 loosely mounted onthe member 10 and means for moving said collar.

This consists of a bell crank lever 42, pivotally mounted on a pin 43 in a'bracket 44 on the ladle carrying frame 45, having its lower end 46 forked and provided with pins 47 engaging in the annular groove 48 of the collar 41. The other end 49 of the lever 42 isconnected to an operating lever 50, pivotally mounted on a plate 51 secured to the carrier frame 45, by a plunger 52 pivotally connected to said lever and having a yielding connection with a plunger casing 53 like that shown in section in Fig. 1 and a rod 54. Means arealso provided for locking the lever 5O. in diflerent positions, similar to that of the first form and consists of a pawl 55 slidably mounted in a block 565 and a wire 56 carried by the age a segmental rack on the plate 51, sai pawl 55 being controlled through mechanism like that shown in Fig. 1. In this construction it a furnace, shown in dotted lines in Fig. 5. and the crucible be removed therefrom on the manipulation of the level-'50 and the raising of the carrier frame. For tilting the crucible the outer end of the member 10 is bent upwardly to-form a tilting handle 57. V V

' It will be noted that the trunnions 12 and 13 are slightly off center so that the crucible will be tipped slightly backwardly or opposite to the direction of tipping for pouring and in the first form the rod 24 engages the supportingframe to limit the backward tipping of the crucible and in the second form a stop14 secured to theframe engages the handle 57 to accomplish this purpose. Due to; this manner of mounting the holder on the supporting frame any ladle-holder and frame may be lowered into tendency of the crucible to tip forwardly,

unless expressly moved by the operator, is prevented.

The operation of the devices shown is briefly as follows In the first construction the operator moves the lever 26 forwardly and in the second construction he moves the lever 50 downwardly upon the release of the lever lock in both cases. This motion of the lever is, in both instances, transmitted through the yielding connection previously described to therod 24 which thereupon moves inwardly thus moving the outer ends of the levers 17 and 20 inwardly to open the jaws 11 and 15, as shown in Fig. 3. In this position the ladle-holder may he slipped over the top of the crucible by the operator or may be lowered to position over the top of the crucible while mounted on the carrier frame, and. then on the backward movement of the lever 26 or the upward movement of the lever 50 and'rod 24 moves backwardly moving the outer ends of the levers 17 and 20 outwardly to close the ladle-holder jaws 11 and 15 about the crucible and the yielding connection prevents breaking of the crucible through undue clamping action ofthe jaws, Figs. 2 and 6. When the crucible is securely clamped to the holder the lever is locked in position by thepawl engaging in the segmental rack and the crucible is now ready for transportation to any desired point or may be raised and then tilted for pouring, the lever 26 in one instance and the handle 57 in the other facilitating in the pouring operation. a o

It will be further noted that the construction shown in Fig. 5 permits the device to be lowered into the furnace and operated by a single operator from above to close the jaws after which the pot or crucible may be lifted out of the furnace and transported to the desired place in the foundry. l leretofore it has been necessary to have three men with long tongs laboriously lift the crucibles from the furnace and get them ready for transportation but the present device only requires one man and all he has to do is to close the open jaws around the crucible.

The invention thus exemplifies a portable ladle holder provided with movable jaws which may be moved outwardly to slide over the top of acrucible and then drawn tightly around the same so that said crucible may be conveniently conveyed to any part of the foundry.

While the drawings show certain forms of construction to illustrate the invention, it will be understood that such construction may be varied in different ways without departing from the spirit and scope of the invention.

hat I claim as my invention is 1. A crucible holder comprising a plurality of jaws for clampingly engaging the crucible, supporting means for the jaws, and mechanical means movably connected to the jaws and movable with respect thereto for actuating said jaws.

2. A crucible holder comprising a clamping member having a crucible engaging portion, a clamping member pivotally secured to the first member, and mechanical means for moving said members with respect to each other to clampingly engage the crucible.

3. A crucible holder comprising a clamping member having handle portions and a crucible engaging portion, a clamping member pivotally secured to the first member, a pair of levers pivotally connected to said clamping members, and means for moving said levers to open and close the clamping members.

4. A crucible holder comprising a clamp-- ing member having handle portions and a crucible engaging portion, a clamping member pivotally secured to the first member, a pair of levers pivotally connected to said clamping members, and means including a movable operating lever and a yielding connection for moving said levers to open and close the clamping members.

5. A crucible holder comprising a clamping member having a crucible engaging portion, a clamping member pivotally secured to the first member, a pair of levers pivotally secured together and to said clamping members, means including a pivoted operating lever and a yielding connection for moving said levers to open and close the clamping members, and means for locking said operating lever in different positions.

6. The combination, with a ladle carrier frame, of a crucible holder carried thereby comprising a pair of tiltable crucible-clamping members, one of said members being movable with respect to the other, means for operating said clamping members including a lever pivotally mounted on the carrier frame.

7. The combination, with a ladle carrier frame, of a crucible holder carried thereby comprising a pair of tiltable crucible clamping members pivotally secured together, levers opera-tively secured to said members comprising an operating lever pivotally mounted on the carrier frame, and a yielding connection between said levers and said operating lever.

S. The combination, with a ladle carrier frame, of a crucible holder carried thereby comprising a pair of tiltable crucible-clamping members pivotally secured together, levers operatively secured to said members, and means for moving said levers to operate said clamping members comprising an operating lever pivotally mounted on the carrier frame, a yielding connection between said levers and said operating lever, and means for locking said operating lever in different positions.

9. In a crucible holder, the combination of a pair of crucible supporting and clamping members, a pair of levers movably connected to said clamping members, and yielding mechanical actuating means for operating said levers to open and close the clamping members.

10. In a crucible holder, the combination of a pair of crucible supporting and clamping members, and mechanical means adapted to yieldingly hold said clamping members about a crucible to prevent breaking of said crucible.

In testimony whereof, I affix my signature.

MAX W. GOLDBERG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. r

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