US1425658A - Ingot-casting device - Google Patents

Description

F. L. IAMISON.

INGOT CASTING DEVICE.

y APPLICATION FILED IAN. 6,1921. 1,425,658. PatenfedAug. 15, 1922.

FRANK L. JAMISON, 0F PITTSBURGH, PENNSYLVANIA. I

:Neer-CASTING DEVICE.

specicauon of Lettersratent. Patented. Aug. 15, 1922.

Application filed January 6, 1921. Serial No. 485,341.

To all whom t 'may camera.'

Be it known vthat I, FRANK L. JAiursoN, a citizen of the United States, residing at .Pittsburgh in the county of Allegheny and State of ennsylvania, have invented certain new and useful Improvements in Ingot- Casting Devices, of which the following 1s a specification.

This invention relates to new and useful improvements in ingot casting devices, and the primary object thereof is to provide a device of the character described, in a manner as hereinafter set forth, with means whereby the formation of the defect commonly known as fpiping, due to Ithe shrinkage of the metal during the process of cooling or hardening, is effectively prevented,

l and under such conditions providing for the economic manufacture of ingots.

l Further objectsof the invention are lto provide a device of the character described, which`may be used in connection with a mold of the usual construction without alterations thereto, which is simple in its construction and arrangement, strong, durable and efiicient in its use, and comparatively inexpensive to manufacture.

l To the accomplishment of these and such other objects as may hereinafter appear, the invention consists 'of the novel construction, combination and arrangement of parts herein specifically described and illustrated in the accompanying drawing, -v wherein .is shown what is now thought to bethe best embodiment thereof, but it is to be understood that changes, variations, and modifications in the construction may be resorted to, without departing from the principle or sacrificing any of the advantages of the invention, which come within the scope of the claim hereunto appended.

In the drawing forming a portion of this specification and wherein like numerals of reference designate corresponding parts throughout the several views:

Figure 1 is a vertical sectional view of an ingot casting devicev in accordance with this invention, with a portion of the mold broken awa y v Figure 2 is a top plan view thereof.

Figure 3 is a side elevation of the hood member.

Figure 4: is a perspective view of a portion of the burner element, and Figure 5 is a vertical view of a modified form of the device.

Referring in detail to the drawing 1 indicates an ingot mold' of the usual construction. The mold is open at its upper end and rectangular 1n contour, although it is understood that 1t can be of any desired shape.

- Mounted on the top of the mold 1 is a rectangularly shaped hollow head 2 which is open at its upper and lower ends forming a passage 3 through the head l2. The passage 3 through the head 2 is tapered to dlminish in size toward the upper end thereof to permit of its convenient removal after the molding operatlon. The width and breadth of. the passage 3, throughout is smaller than the wldth and breadth than the ingot forming chamber of the mold 1.

A lateralliy projecting ange 4 is formed integral wit the outer face of the lower end of the head 2, and is provided with a recess 5 on its lower face, forming a depending portion 6 extending the head 2 is positloned thereon. The corners of the passage 3 and the lower edge thereof are rounded oil" to assuage the deteriorating effect of the molten metal thereagainst.

A burner tube 7 entirely surrounds the lower end of the head 2 and is carried on the upper face of the iiange 4, but slightly spaced therefrom by resting'on the diagonally .disposed ribs 8, one ofA which is positioned at each corner of the flange l and formed integrally therewith. A fuel supply pipe 9 communicates with the burner tube 7.

The burner tube 7 is spaced from the outer face of the Vhead 2 .and is provided with two rows of burner openings 10 and 11, respectively.l The former are adapted to pro'ect the iame horizontally against the outer ace of the head2, and the latter are adapted to project the flame upwardly in an angular position against the outer face of the head 2.

Enclosing the head 2 is a rectangularly shaped hood 13, which is open at its lower end and provided with a vent 14 in its top. A suitable cover plate 15 is provided to close the vent 14when required. Each corner of the lower end of the hood 13 is formed with a leg 16 which is adapted to engage in a recess 17 provided therefor in each corner of the :flange 4 on the top face thereof. One wall of the hood 13, on its lower edge, is provided with a cut-out portion 18 to permit of the passage of the fuel supply pipe 9 therethrough. The lower edge of the walls of the into the mold 1 when' Sil hood 13 is tapered, as at 19, -to facilitate the passage of air to the burner element to aid combustion.

The outer surface of the head 2 and the the drawing, all parts of the device are identical in construction as that described above in reference to the preferred form, with the exception of the hood 21 and the position of the burner element 22. ln -the modified form the hood 21 is provided with an enlarged lower portion 23, which latter is, adapted to surround the upper portion of the mold 1. rlhe hood21 is supported by the legs 24: on the flange 25 in the same manner as in the preferred form. The burner element 22 is carried by hangers 26, one of which is carried by and depends from each corner of the lower end of the enlarged portion 23 of the hood 21.

llo close all possible interstices between the head 2 and mold 1, plastic clay 27, or its equivalent, is interposed between the contacting parts.

When casting ingots by. the ordinary method a portion of each is rendered useless and cut away due to piping, that. is, to the cavity formed at the top of the ingot due to the shrinkage of the metal during the process of cooling or hardening of the ingot.

B the use of my improved device a perfectly solid ingot is invariably produced in the following manner: l

The head 2, hood 13 and the burner ele ment are positioned on the mold in a manner herein described. By use of the burner element the head 2 is intensely heated. After the head 2 has been brought to a sufficient heat, the metal is poured into the mold 1 in a sufficient quantity to llthe latter and to partially fill the head 2 also. During the pouring operation and during the first few minutes of the hardening process, the fire from the burner element is kept playing against the head 2 and the vent 14 is open. ln this manner the top portion of the poured metal will not be permitted to solidify before the other portions thereof. rlhe excess metal carried in the head 2 is ample to provide for any shrinkage in the main mass of metal, within the mold 1, and piping,9 if any will only be in that portion of the metal extending in the head, as is clearly shown at 28, in Figure 1 of the drawing. When thel burner element is closed od or inoperative after the pouring operation the vent 14 is closed by the cover plate 15 to confine the generated heat.

lin the modified form of construction the operation of the device is the same with the exception that in addition to heating the head as described, the top portion of the mold is also heated, but in the normal conditions of practice thisvmethod is not essential.

What l claim is:

An ignot casting device comprising a head having its lower portion formed with a flange adapted to be seated on the top of a mold body from the chamber, and a heatin at the lower portion of the chamber, said flange forming the bottom of the chamber, and said hood having legs extending into the said Harige. v

lin-testimony whereof-1 ax my signature.

raamt L. Jamison-:V

a hood enclosing and spaced head and providing a heating element arranged

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