US1768254A - Casting mechanism - Google Patents

Description

June 24 1930. J. E. HOY

CASTING MECHANISM Filed Nov. 12. 1926 I N VEN TOR.

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15 ways 1n which the Patented June 24, 1930 UNITED STATES PATENT OFFICE I JOHN E. HOY, DIE-MIDLAND, MICHIGAN, ASSIGNOR TO THE .DOW CHEMICAL COMPANY, OF MIDLAND, MICHIGAN, A CORPORATION OF MICHIGAN CASTING MECHANISM Application filed November 12, 1926. Serial No. 147,888.

This invention relates to metal casting, and more particularly casting light metals, and it is among the objects of the invention to provide an equipment capable of forming rods or bars of various sizes, and in a manner allowing ready discharge. Other objects and advantages will appear as the description proceeds. v

To the accomplishment of the foregoing and related ends, the invention, then, consists of the means hereinafter fully described, and particularly pointed out in the claims, the f0llowing description and the annexed drawing settin forth in detail but one of the various principle'of the invention may be employed.

In said annexed drawing 2- Fig. 1 is a central vertical sectional view showing an embodiment of the invention;

Fig. 2 is a plan View; and Fig. 3 is a sectional detail of a modification.

The reference character 1 in the drawing designates a support or frame of any suitable form in which is mounted a spindle 2 carrying a pouring-box made up of a lower section 3 and a removable upper section 4. The mating sections 3, 4, are radially recessed for the engagement of molds, which are preferably I in the form of tubes 5, a shoulder 6 advantageously being provided as an inner abutment for the tube. The tubes may be of any desired material and size, but conveniently will be made of seamless steel tube, and engage between the mating sections 3 and 4-. of the pouring-box (the upper section 4 being lifted up for this .purpose). These molds or tubes then project out radially, each tube abutting at its outer end against an outer abutment carried by an arm 7, and the abutment can if desired provide the outer closure for the tube, but I prefer a separate closure, for instance a cap 8, which may be provided with a vent. Additional supports 9 for the tubes may be carried by the arms 7. Instead of having individual abutments at the outer end of each tube, it is generally more desirable to provide an abutment in the form of an annulus or ring 10 carried by the arms 7, and this ring may be provided with a ledge 11 below.

contained metal may then be lifted out from,

tinctly claim as my invention On the spindle 2 is a drive-gear 0r pulley 12 by which the device may be rotated as desired.

In use, with the tubes and pouring-box all assembled, the material to be cast, for example magnesium, is poured into the box, and rising up on the outer side of the skimming ring projection 13 flows out through the radial openings into the molds or tubes 5. These tubes 5 may be of various sizes as desired, and for larger sizes it is not ordinarily necessary to rotate the device. In the case of smaller sized mold tubes, it is however usually desirable to rotate the assemblage, so as to properly insure adequate filling. The metal mass quickly solidifies, and the upper section 4 of the pouring-box is then lifted off by means of the handles 14, and the assemblage of tubes held together 'in spider form by the the pouring-box. By then knocking 0d the closures, if such be used,.the tubes may then be readily slid off from the contained cast metal. To facilitate the strip, it is desirable to preliminarily smoke the interior of the tubes or apply some other coating allowing of ready stripping. With the mold tubes removed the cast portions may now be severed from the central body, by any suitable means, and the central portion left may be returned to be remelted.

It will thus be seen that the device as a whole presents an effective and simple means of casting materials where a relatively small amount of cooling is required, and the assemblage may be quickly put together again ready for further use.

Other modes of applying the principle of the invention may be employed, change being made as regards the details disclosed, provided the means stated by any of the fol lowing claims or the equivalent of such be employed.

I therefore particularly point out and dis- 1. In a casting machine, the combination of a rotatable pouring-box comprising upper and lower sections, a skimming obstruction in said box, said sections having shouldered radial recesses in the mating surfaces, moldtubes engageable in such radial recesses, and peripheral means for holding said tubes in relation.

2. In a casting machine, the. combination of a rotatable pouring-box comprising upper and lower sections, a skimming projection extendlng downwardly from the upper section, mold-tubes engageable radially with said pouring-box, removable closures for the outer ends of said tubes, and means for holding the tubes in place.

3. In a casting machine, the combination of a pouring-box comprising upper and lower sections and having ra'dial recesses in the mating surfaces, mold-tubes engageable in such radial recesses, removable caps for the outer ends of said tubes, and peripheral means for holding the tubes in place.

4. In a casting machine, the combination of a pouring-box comprising upper .and lower sections and having radial recesses in the mating surfaces, mold-tubes engageable in such radial recesses, an annular skimming the mating surfaces, mold-tubes"engageable in such radial recesses, an annular skimming pro ect10n extending downwardlyjrom the upper box section, removable caps for the outer ends of said tubes and a peripheral ring holding said tubes in'relation. Signed by me this 4th day of November,

JOHN E. HOY.

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