US543700A - Casting metal - Google Patents

Description

L t e e h s m 9 e h s 2 M ET B M G n AS .A JO m d 0 M 0 m Patented July 30,1895.

WITNESSES (No Mddel.) 2' Sheets-Sheet 2.

J.A .POTTER. GASIING METAL.

N0; 543,700. Patented July 30, 1895.

mvslifon wrmss'ses U ITED STATES PATENT OFFICE.

JOHN A. POTTER, OF PITTSBURG, PENNSYLVANIA.

CASTING M ETAL.

SPECIFICATION forming part of Letters Patent No. 543,700, dated July 30, 1895. Application filed August 19,1893. Serial 10.4%,511. mammal.)

To aZZ whom it may concern.-

Be it known that I, JOHN A. POTTER, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Casting Metal, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this speci fication, in which Figure 1 is a top plan view of my improved apparatus. Fig. 2 is a vertical sectional view on the line II II of Fig. 1, and Fig. 3 is a detail view of the circular base-plate.

My invention relates to the production of small castings, and more particularly small steel ingots, and is designed to produce these castings without pipes or blow-holes in a'rapid and inexpensive manner.

In the drawings, 2 represents an' annular casting, forming a base-plate, resting upon the foundation. Upon this base-plate rests the annular bearing-plate or ring 3, having a broad head provided with a circular groove on its upper face. Fitting snugly around this ring is the annular band 4, having'a projecting flange 5 for about half its perimeter, this flange serving as a support for the castings or ingots. Carried upon a series of balls resting in the groove of the bearing-plate 3 is the circular carrier 6, having a registering-groove upon its under side, and a downwardly-projecting inner flange 7, having a circular rack 8 thereon, with which engages the drivingpinion 9, driven through suitable gearing 10. Supported upon the carrier 6 by an inner projecting shoulder is the circular mold-ring 11, provided with a series of matrices, which preferably taper upwardly, as shown. At one side of the mold-ring is supported the fountain 12, having a bent passage leading to a castinggate 13 in the flange 5, this gate being composed of a perforated fire-brick or of similar ing an incomplete ingot and doing away with the chilling ofthe metal in the fountain. By this means I can'use the fountain for six or seven successive hours instead of being renewed after each cast, as was heretofore necessary, the fountain being broken up and the chilled metal removed.

In order to prevent air being siphoned into the mold bythe exposed stream of metal issuing from the ladle and entering the fountain I-preferably make an air-tight joint in any suitable manner, by luting or otherwise, between the ladle and fountain. At the opposite side of the carrier, upon a bridge 18, is supported a motor-cylinder 19, carrying a downwardly-acting ejector 20, which registers with the mold-orifices and forces the ingots downwardly, they falling upon the incline 21 and sliding therefrom to the driven rollers 22, by which they are removed. The band 4 may be forced securely up against the bottom of the mold-ring by means of the keys 23, passing through slots therein and resting upon the base-plate, these keys passing through elongated recesses in the inner ring 3. Covers 24 are provided for the molds, these being removed soon at'ter the molds are filled and replaced after the ingots are ejected.

The operation is apparent. The mold-ring being rotated intermittently, as each mold is filled it passes to one side, and the ingot, sliding over the supporting-plate, is cooled by the time it reaches the ejector.

The advantages of my invention are many. The'oxygen of the air, which has been heretofore drawn into the molds with the stream of metal, and combining with the carbon in the molten metal causes the blow-holes and pipes, is excluded in the practice of my invention, and solid ingots are produced. More over, I can regulate the descent of the metal and the pouring into the mold, since by shutting down the stopper of the ladle the flow of the metal is stopped. I may thus stop the flow as each mold is filled and prevent any liability to leakage and forcing out of the metal.

The fountain and molds are easily drained of surplus metal and slag, and the whole operation is rapid and inexpensive, while a superior product is obtained.

Many modifications will suggest themselves to those skilled in the art without departure from my invention, since What I claim is-- 1. The combination with a horizontal moldring having a series of vertical mold-cavities extending through it, of a stationary plate extending beneath a portion of the series and over which the cavities move, said plate having a gate arranged to successively register with the mold-cavitiesg substantially as described.

2. The combination with a horizontal moldring having a series of vertical mold-cavities extending through it, of a stationary plate extending beneath a portion of the series and over which the cavities move, said plate having a feeding orifice lined with refractory ma terial and arranged to successively register with the mold-cavities; substantially as described.

3. The combination with a horizontal moldring having a series of vertical mold-cavities extending through it, of a stationary plate extending beneath a portion of the series and over which the cavities move, said plate having a gate arranged to successively register with the mold-cavities, and a vertical fountain having a lateral runner leading to the gate; substantially as described.

4. The combination with a horizontal moldring having a series of vertical mold-cavities extending through it, of a stationary plate extending beneath a portion of the series and over which the cavities move, and having a gate, and an ejector separate from the plate and arranged to eject the castings from the cavities successively as they pass in front of it; substantially as described.

5. The combination with a horizontal moldring having vertical moldcavities, of a stationary plate extending beneath it a portion of its circumference, a gate in said plate, and a vertically acting ejector, arranged to register successively with the mold cavities sub stantially as described.

In testimony whereof I have hereunto set my hand.

JOHN A. POTTER.

Witnesses:

PHILIP Y. PENDLETON, H. M. Conwm.

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