US1345161A - Pit-flask for castings - Google Patents

Description

E. FRIES.

PIT FLASK FOR CAST-1N6.

APPLICATION FILED OCT. :1, 1919.

Patented June 29, 1920.

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E. FRIES. PIT FLASK FOR CASTING.

APPLICATION FILED OCT. H. 1919.

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E. FRIES.

PIT FLASK FOR CASTING.

APPLICATION FILED OCT. 11,1919.

UNITED STATES PATENT OFFICE.

. EDWARD FRIES, OF MOORES, PENNSYLVANIA.

PIT-FLASK Fort CASTINGS.

Specification of Letters Patent. Patented J 11118 29, 192() Application filed October 11, 1919. Serial No. 330,076.

To aZZ whom it may 00mm..- I

Be it known that I, EDWA D F RIES, a citizen of the United States, and a resident of Moores, county of Delaware, State of Pennsylvania, have invented certain Improvements in Pit-Flasks for Uastings, of which the following is a specification. My invention relates to certain improvements in flasks used in the production of large castings,

One object of my invention is to provide a flask which can be permanently located in a pit and in which the mold can be built up prior to casting.

I A further object of the invention is to -make the walls of the flask movable and adjustable to accommodate molds of different sizes and to make the bottom' supports of the flask adjustable for the same purpose.

A still further object of the invention is to construct a flask which can be ermanently located in a pit inv the molding" oor so as to avoid the necessity of having a number of duplicate, flasks and to economize in floor space heretofore used in storing unused flasks. Y I i I c Another object ofthe' invention is to prevent accidents due to the breaking of a flask, or the parts of a flask, by allowing the molten metal to flow into a pit rather than over the molding floor. I

Still another object of the invention is to provide a flask in which a bottom plate having a mold thereon can be inserted in the flask and can be withdrawn therefrom with the casting. I r

In the accompanying drawings: I I

Figure 1 is a perspective view of my improved flask located within the pit and showing the cope located on the flask and the parts ready for pouring; I I I Fig. 2 is a plan view of the flask;

Fig. 3 is an end View; r I

Fig. 4 is a side view; 1 I

Fig. 5 is a perspective view of the mold mounted on the bottomplate; I

Fig. 6 is a perspective view showing the arrangement of the sections of the mold in the flask; and r Fig. 7 is a sectional view showing the flask within the pit and the cope located above the flask ready for pouring.

1 is a pit, of any depth desired, and located in this pit is the flask 2 consisting of end members 3 and side members 4; and 4. The side member 1 is fixed and the side member .tis adjustable toward and from the member 4. In the present instance, the side member 1 has extensions 5 which overlap the recessed portions 6 of the end members 3.

In order to hold theside member 4 in the.

position to which it is adjusted a series of holes 7 are made in each end member and pins 8 are driven in these holes. When the mold is in position, wedges 9 are drivenin the space between the pins and the side members so as to lock the mold firmly in position. The lower end of the side member may be held in any manner desirable and, in some instances, duplicate sets of holes for the pins may be formed in the end members, as shown by dotted lines in Fig. 2.

Located in the flask is a bottom board 10 supported onbars 11, which extend through openings 12 in the end members of the flask.

These openings '12 are located so that the bottom board can be elevated to the height desired, according to thesize of the mold, thelparting being at the upper edge of the flas 13 are a series of openings m'the upper portionof the flask, in the present instance cruciform in shape, to allow for the escape of gas from the mold during the pouring operation. In the present instance, the flask is of sucha size as to accommodate the mold of a locomotive cylinder saddle, in which is contained the cylinder, the cylindrical valve and the passages leading to and from the cylinder and the valve.

I11 Fig. 6, I have illustrated the flask with the sectional mold located therein showing the detachable walls a of the mold, the section .6 forming the cylindrical valve chamber and the ports, the end members being recessed to form one-half of the cylinder, the other half being formed inthe mold car- .ried by the cope, as illustrated in Fig. 7.

The flask is adjusted according to the mold and when once adjusted a mold can be assembled within the flask and sand rammed between the walls of the flask and the mold, then the cope is placed in position and the pouring head is also located in position, as in Fig. 1, then the metal is poured into the flask and in time the casting can be removed with the bottom plate by first removing the cope and withdrawing the mold and casting on the bottom plate, leaving the flask within the pit. The pit is then cleaned out to receive another bottom plate with another mold assembled thereon.

the bottom plate with the casting after the wedges retaining the side members have been removed. 7 o

By this arrangement, a single flask can be usedfor any number of molds without removing the flask from the pit. This prevents theaccumulation of a large number of flasks heretofore used in foundries where large castings are made as, in the ordinary method, the flask was removed each time a casting was made, and another flask placed in position. The flasks, after the castings were removed, were piled either on the inside or on the outside ofthe building, occupying valuable space which is now used more advantageously.

Heretofore, particularly in casting cylindersof locomotives, each special size of cylinder hadito have a flask of a corresponding size. This necessitated carrying a large number of flasks in storage, or providing special flasksflwhen cylinders of a special size were to be made.

.By my improvement, I am enabled to make a single fixed flask, which can be adjusted to fit molds of different dimensions. Furthermore, where intricate molds are used, the several cores can be assembled on the base mold, being supported only by the bottom plates, thus insuring more accurate castings than where the mold and the cores are assembled within a drag section of a flask.

While I have shown one side member arranged to be adjusted, it will be understood that the other side member may be adjusted if found necessary, and while I have shown pins and wedges for holding the adjustable side members in position, other means may be used, if desirable.

I claim:

1. The combination in a flask adapted to be. located in a pit, of-fixed' end walls and side walls located between the end walls, one

of said side walls being adjustable; and an adjustable bottom located within the flask and supportingithe mold.

2. The combination of a flask adapted to be permanently located within the pit and having end Walls and side walls, one Wall beingadjustable toward and from the other wall; a bottom plate carrying thebottom section ofthe mo1d,the parting being at the upper edge of said mold; a cope having the upper section of the mold formed therein andplaced on the lower section; and a pouring section located on the cope.

'3. The combination in a flask adapted to be permanently located in a pit, of a fixed side wall and end walls recessed atthe upper end; a movable side wall having extensions adapted to the recessed portions of the end walls; a series of holes in each "end of each end wall; pins adapted to theho'les; andwedfges between the pins and themovable side wall so as to hold the said side-wall in the position to which it is adjusted. I

4. The combination of a fia'sk *having end and side walls, said flask being permanently located in a pit, the upper portion of the flask extending above the pit, said flask hav- 7 ing a movable side wall; means for holding the saidside wall durin the castingopeiiation'; a bottom plate a" apted to the flask; means for supporting the bottom plate in the flask, the bottom moldbeing carried'by the bottom plate and extending to a point below the parting line of the flask; detachable mold sectionsmounted orn'fthebottom mold so as to bring the mold up to the part ing line; and a cope mounted on the flask and carrying the balance of'themold."

5. The combination of 'a flask; a pit in the molding floor in which the flask is located, the flask extending above'the floor; a series ofit holes in the lower portion of each end wall of the flask; bars located in the holes; and a bottom plate located within the flask and supportedby the bars.

6. The combination of a fixed flaskhav-ing end and side members; a removable bottom plate "located within the flask; means for supporting said plate and slings attached to the bottom plate at each-side oi? the mold,-

said slings, before the metal is cast, being

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