US1150974A - Apparatus for casting metals. - Google Patents

Description

W. FQSOLLIS & J. LAMBERT. APPARATUS FOR CASTING METALS.

APPLICATION FILED MAR-23. 1915.

1,1 ,9'74 Patented Aug. 24, 1915.

wwwiij M WALTER FRANCIS SOLLIS AND JAMES LAMBERT, OF BATTERSEA, LONDON, ENGLAND.

APPARATUS FOR CASTING METALS.

To all whom it may concern Be it known that we, WALTER FRANCIS SoLLIs and JAMES LAMBERT, both subjects of the King 'of Great Britain, residing at 157 Ingrave street, liattersea, London, S. VV., England, and (i9 VVeybridge street, Battersea, London, S. W., England, respectively, have invented certain new and useful Improvements in Apparatus for Casting Metals, of which the following is a specification. 1

This invention relates to the method of casting metals wherein pressure is exerted upon the metal by centrifugal force as it enters the mold, with the object of preventing short pours and blowholes, and with a View to obtaining a solid and homogeneous metallic body that is a true replica in every respect of the mold. In processes of a like type heretofore contemplated it has been necessary to have special molding boxes or flasks for each article molded or to arrange the molds symmetrically upon the rotary table in a manner that required a common central pouring hole, or runner adapted to receive the metal from the ladle, and in which the risers had a common overflow.-

This invention does not contemplate special molds or molding boxes but apparatus whereby ordinary molding boxes may be employed and yet receive the metal under the influence of centrifugal pressure.

In carrying this invention into effect a turntable is provided and driven by suitable means, the said turntable being so slotted over its face that the pouring hole of the box containing the mold to be cast can be centralized with respect to the turntable center of rotation. In cases however where two or several molds require to be cast fromv a pour in succession then a bent funnel is employed whose end remote from the mouth may be inserted into the runner of each mold in turn while the mouth of the is centralized to receive the molten liquid metal; the runner centers of each box being of equal radii from the turntable center.

In order however to more fully describe this invention reference is made to the 'accompanying drawings in which Figure operating the invention. Fig. 2. shows detail of portable pouring funnel shown in operative relation with respect to the runfunnel 1. shows in vertical part sectional elevation the apparatus for and method of sp Specification of Letters Patent. y t nt d A 24, 1915, Application filed March 23, 1915. Serial No. 16,525.

ner of, a 'mold upon a table as in Fig. 1.

N S Fig. 5, shows an apparatus for accommodating more than one flask.

In the drawings, a rotary table 1 is mounted on a shaft 2, driven by belt 3 or equivalent convenient means, the said shaft beingjournaled in a footstep bearing 4.

The -table 1 is as shown conveniently and specially slotted chuck plate fashion as at 5 to accommodate holding down bolts 6,

. which bolts secure. the ordinary molds or flasks 7 adjustably upon said table. The said flask 7 in the example shown is disposed so as to have its runner 8 centrally dis posed with regard to the axis of rotation of the table, a plumb-bob 9 being suitably placed to insure this. .In operation in this form of the invention metal is poured into the runner inthe well known way while the table is revolving. Immediately the metal reaches the mold it feels the effect of centrifugal force, which force increases as the metal gets farther from the axis, the effect being to vdrlve the metal into the mold and accurately fill the same, the metal mounting to the riser 10 whereits further progress may be prevented by cessation of rotation.

In Fig. 3 is shown av method of placing several ordinary molding boxes upon the table 1. In this case they are arranged-radially as near as possible to the center, but with .the pouring holes all practically equidistant from the axis. In this case a runner mouth 18 is provided," see Fig. 2, which can be placed in any one of the runners, so I end of the mold in the flaskshaving a radial length from the center of not more than one foot, or 15 inches at the most. For lighter metals such as aluminium and its alloys, the eed may either be increased or the flasks farther from the center.

placed It will be seen that in operation exactly the conditions required for obtaining good castings are by these simple means accomplished, and by having the funnel device and rotary turntable no other devices than those found in any ordinary foundry are necessary.

The operator can if so desired, varythe speed of the rotating table during the process of casting, this beingdesirable in some of revolution or so that it may be held at a f distance therefrom. I

2. In an apparatus for producing metal castings in combination, a rotatable turn table the face of which is provided with a plurality of slots so arra nged that a molding flask of. ordinary pattern may be secured on its face either so that the pouring hole may coincide with the axis of revolution or so that it may be held at a distance therefrom,v

a plurality of molding flasks of ordinary pattern secured to said table in such a mannerthat their pouring holes are removed from the axlsof rotat1on,.and a pouring funnel adapted to enter the pouring hole of each of the said flasks successively and to deliver metal thereinto while the table is being rotated. I a

3. A pouring mouth for molds comprising an enlarged mouth portion and a deiivery portion arranged substantially parallel, I

the mouth portion opening in one direction and the delivery portion opening in the'op- I posite direction, an intermediate portion connecting said portions, and a flange surrounding said delivery portion, substantially at right angles thereto. I

tures in presence of two witnesses.

WALTERFRANCIS soLias JAMES LAMBERT.

In testimony whereof we afix our signa- Witnesses:

F. C. Hons, I A. N UTTING. Q i

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