US1280712A - Crucible-holding apparatus. - Google Patents

Description

0.1. GOEHRINGER.

CRUCIBLE HOLDING APPARATUS.

APPLICATION FILED 1uNE22. 19:8.

1,280,712. Patented Oct. 8,1918.

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CHARLES J. eoiiirrarivenn, :GINQINNATJI, tam;

CBUCIIBLE-I-IOLDING PPA ATUS.

To all whom it may concern:

Be it known that I? RINGER, a citizen of the United States, residingat Cincinnati, in the county of Hamilton and State of Ohio, have invented certain: new and useful Improvements in Crucible-Holding Apparatus, 'of which the following is a specification.

My invention relates to improvements in crucible holding apparatus. ()ne of its objects is to provide a simple reliable and practical crucible holder. Another object is to provide for the automatic grip and auto matic release of the hold upon the crucible. Another object is to provide for holding crucibles of different dimensions. Another object is to provide against accidental release of the crucible during the pouring operation. My invention also comprises certain details of form, combination, and arrangement, all of which will be fully set forth in the description of the accompanying drawings, in which:

Figures 1 and 2 are plan views of the respective members of a crucible holder embodying my invention.

Fig. 3 is a sectional diagram illustrating the position of the crucible and holder during the pouring operation.

Fi 4 is a sectional dia 'ram illustratin 1 the position of the crucible and holder when the crucible is about to be lifted, or has just been returned to the furnace plate or floor.

Fig. 5 is a sectional diagram illustrating the position of the crucible and holder after the crucible has been lifted from the furnace plate or floor, or is about to be returned thereto.

The accompanying drawings represent the preferred embodiment of my invention in which 5 represents a metal ring having handles 6 and 7 at opposite sides and an outwardly projecting bracket 8. The bracket 8 has an eye 9 through which the shank 10 of a hook 11 passes, and has a pawl 12, loosely pivoted to the ears of the bracket 8 by means of a bolt'll. The shank of the hook 11 is preferably longer than the crucible 15 to be held thereby and is provided with a series of rack teeth 16 to be engaged by the pawl 12.

In practice the ring 5 is placed upon the furnace plate 17 or other flat surface adjacent to the furnace, the highly heated crucible with its charge of molten metal is then Specification of Letters Patent.

Application filed June 22. 1918. Serial No. 241.448.

CHARLES J. Gonnratenteu QcteS lQiS,

lifted from the furnace with crucible-ton gsl i and seated within the ring 5 upon theifurn nace plate on floor, and the shank-of hook ill inserted through the ,eye,9. Two operators then'grasp the handles 6 and-7 and lift the ring 5 first to the position illustrated in Figix A where the ring engages the outer wall of the crucible, and thento the positioirFig.

5,.where the hook 11 engages the upper edge or rim of the crucible. The crucible is then carried to the position where the molten metal is to be poured from the crucible into molds, where the operator holding the forked handle 7 is ableto tip or incline the ring 5 and crucible 15 to substantially the position indicated in Fig. 3. This tilting operation causes the pawl l2, actuated by gravity to engage one of the teeth of rack 16 and firmly lock the shank 10 and hook 11 to the bracket 8 so long as the crucible isin a tilted or inclined position, and prevents the crucible from disengaging itself fro the ring 5.

As soon as the metal has been poured the crucible and holder are returned to their original position shown in Fig. 5 above the furnace plate or floor, in which position the pawl 12 is disengaged by gravity from the rack 16, and the holder is then lowered to the position Fig. 5 in which the lower end of the shank 10 by engaging the plate 17 disengages the hook 11 from the crucible rim, and finally to a position where the ring 5 rests upon the plate 17, whereupon the crucible is grasped by tongs and replaced in the furnace. Pouring ladles may also be employed in place of crucibles 15.

members become highlyheated and diflicult to handle, and it is therefore important that the holder members act reliablyefiiciently and automatically. 7 The combined action of the hook and ring enables a greater variety or range of crucibles to be held with a given ring than would be otherwise practicable.

The apparatus herein illustrated and described is capable of considerable modification without departing from the principle of my invention.

What I claim is: o, 'o 1. Crucible holding apparatus comprislng a member to support the weight of a crucible having a guiding recess and a gravity actuated pawl, and a holding member to engage the rim of a crucible having a shank guided by said recess and a rack to be engaged by said pawl.-

2. Crucible holding apparatus comprising a member to support the weight of a crucible provided with handles to guide the crucible inpouring, a guiding recess and a gravity actuated pawl carried by said holding member and a member to engage the rim of the crucible having a shank longer than the crucible guided bysaid recess and provided with a rack to be engaged by said pawl.

3. Crucible holding apparatus comprising an annular member to support the weight of a crucible provided with handles to guide the crucible in pouring, a guiding recess and pawl carried by said annular supporting member, and a member to engage the rim of the orucible'having a shank projecting below the bottom of the crucible and provided with a rack to be engaged by saidpawl.

In testimony whereof I have aflixed my signature.

CHARLES J. GOEHRINGER.

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

' Washington, I). G.

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