US932047A - Mold for casting-machines. - Google Patents

Description

J. A. MORE 6; E. H. N. GERWIG. MOLD FOB CASTING MACHINES. AEPLIQATION FILED APR. 30. 1909.

932,047. v Patented Aug. 24. 1909.

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m MMQZZ of a hot stove. On this account a large l in order to keep the apparatus in operative 110 UNITED STATES ISJATENT OFFICE.

JACOB A. HOHB, OF BBADDOGK, AND FBEDIlEBICK H. N. GERWIG, 0F WILKINSBURG,

PENNSYLVANIA.

MOLD FOR CASTING-MACHINES.

To all whom it may concern: I Be it known that we, JACOB A. Morin, of Braddock, and FREDERICK H. N. GERWIG, of Wilkinsburg, Allegheny county, and State of Pennsylvania, have invented a new and useful Mold for (lasting-Machines, of which the following is a full, clear, and exact description, reference being had to the accompany ing drawings, forming part of this specification, in whic Figure 1 is a longitudinal sectional elevation showing a mold constructed and arranged in accordance with our invention; Fig. 2 is a longitudinal side elevation of the same showin the lip or depression formed in one margina edge of the side of the mold; Fig. 3 is a transverse section on the line IIIIII of Fig. 2 Fig. 4 is a similar section on the line IVIV of Fig. 2; Fi 5 is an end elevation of the mold shown in i s. l and 4; Fig. 6 is a sectional elevation s owing the molds as assembled together in formin the endless string of molds of a casting mac line.

Our invention relates to the construction of molds for casting apparatus employed in casting a body of molten materials into a plurality of relatively small pieces and it more particularly relates to the molds used on pig casting machines for forming molten cast iron into what is known commercially as pig 11011.

The object of our invention is to provide a mold of improved construction having means by which warping or distortion of the molds is overcome and the life of such molds is thereby increased while the capacity of the molds is not reduced during the use of the apparatus.

Another object of the invention is to provide a mold having improved means by which loss of molten metal during the casting 0 eration is lessened and is overcome and by w ich the formation of scrap is reduced and loss or waste of the molten metal is prevented.

Heretofore the top marginal edge portion of such molds have had straight marginal edges and in some cases flat marginal surfaces. The molten iron on striking these straight or fiat surfaces while the molds were passin beneath a stream. of metal flowing from t e ladle into the molds would spatter and run in very much the same manner that drops of Water will run when put on the top Specification of Letters Patent.

Application filed April 30, 1909.

Patented Aug. 24, 1909.

Serial No. 493,169.

amount of metal would fall from the molds and would be collected below the casting apparatus in the form of scrap. This entalls an expense in removing periodically the scrap so formed, this removal bein necessary in order to keep the apparatus 1n work ing condition.

11 the drawings, 2 represents one of the series of molds formin a pig castin machine, the molds as shown icing formed y stamping or tracing from a plate of iron or steel into the sha e shown. The bottom portion 3 of the mo (1 is curved transversely and is also curved lengthwise from its center toward its ends as is clearly shown in F' s. 1 and 2. The marginal top portions 0 the molds are inclined inwardly and downwardly at all points and one longitudinal edge portion 4 of the mold is provided with a depression 5 which also inclines inwardly and forms a lip, this lip overlapping the opposite side on the adjacent mold when the molds are in assembled places as shown in Fig. 6. The end portions 6 of the molds are provided with holes 7 through which bolts extend in securing the molds in place on the links 8 forming the endless chains of the castin machine. The links 8 are provided witfi rods or shafts 9 on the ends of which track wheels 10 are mounted. These wheels travel on the track rails 11 of the apparatus in the usual manner.

In the use of casting ap aratus equipped with our improved molds tiie chain of molds travels away from the ladle from which a stream of molten iron or other material is poured. The stream of iron will strike the ip portion 5 and will be directed into the mold where it mingles with and forms part of the pig being formed. amount of metal which heretofore won (I roll from the 'mold and which would be lost is directed into the mold where it is collected and saved.

In the molds of such casting machines as heretofore constructed, the bottom portion was straight lengthwise-from the center toward its end. By reason of the action of the heat in the molten metal together with the weight of the metal, the bottom of such molds would quickly become arched, the bottom raising upwardly so as to very materially lessen the capacity of the molds. This required the molds being changed frequently In this way a lar e .ened and distortion and warping of the molds is thereby largely prevented. This results in very greatly increasing the life of the molds while preventing the capacity of the molds from being cut down and lessens the expense of maintaining the apparatus.

The advantages of our invention are many and will be appreciated by those skilled in the art.

Modifications in the construction and arrangement of the molds may be made without departing from our invention. The

overlap the o posite side of its adjacent mold, the over apping side of the mold having a central marginal depression forming a lip and sloping downwardly and inwardly into the mold; substantially as described.

3. In a casting machine, a mold having inwardly sloping side portions converging into a curved bottom portion, the bottom portion curving longitudinally from the center toward the ends of the mold, the top marginal edge on one side of the molds being arranged to overlap the opposite side of its adjacent mold, the overlapping side of the mold s having a central marginal depression formin a lip and sloping downwardly into the mold; substantially as described.

4. In a casting machine a mold formed molds may be cast instead of being formed l from a sheet of wrought metal having inof wrought metal as shown. The form and Wardly sloping sides converging into a shape of the lip on the overlapping edge of i curved bottom, the bottom curving longi- 1e degree of l tudlnally from the center toward the end of the molds may be changed.

curvature of the bottom portion may be I the mold, at least one upper marginal edge modified and other changes may be made Within the scope of the claims.

We claim:

1. In a casting machine, a mold having inwardly sloping side portions converging into a curved bottom portion, the bottom portion curving longitudinally and trans- 5 versely from the center toward the ends and sides of the mold; substantially as described.

portion having a depression forming a lip thereln arranged to overlap the ad olmng edge of the adjacent mold when the molds are assembled in lace von the casting machine; substantial y as described.

In testimony whereof, we have hereunto set our hands.

JACOB A. MOHR.

FREDERICK H. N. GERWIG.

2. In a casting machine, a mold having I inwardly sloping side portions converging: into a bottom ortion, curved longitudinally and transverse y one side being arranged to g

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