US486327A

US486327A - And john w

Info

Publication number: US486327A
Authority: US
Publication date: 1892-11-15
Anticipated expiration: 1909-11-15

Description

(No Model.)

` G. W. G USHING 8v J. W. RAMPE.

l MOLD PoR CASTING GAR WHEELS. y No. 486,327. PatentedI Nov. 15, 1892.

WITNESS'ES:

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GEORGE W. CUSHING, OF EVANSTON, ILLINOIS, AND JOHN WV. RAMPE, OF BOSTON, MASSACHUSETTS, ASSIGNORS TO THE AMERICAN STEEL WHEEL COMPANY, OFJERSEY CITY, NEW JERSEY.

MOLD FOR CASTING CAR-WHEELS.

SPECIFICATION forming part of Letters Patent No. 486,327, dated November 15, 1892.

Application filed July 20, 1892. Serial No. 440,650. (No model.)

T all whom it may concrn:

Be it known that we, GEORGE W. CUSHING, of Evanston,in the county of Cook and State of Illinois, and JOHN W. RAMPE, of Boston, 1n the county of Suffolk and State of Massachusetts, have jointly invented a certain new and useful Improvement in Molds for Cast- 1ng Car-Wheels, of which improvement the following is a specication.

Our invention relates to car-wheel molds of the class in which the molten metal is fed into the mold from below and the tread-surface of the mold is formedin a chill or metallic section interposed between the cope and the drag.

The object of `our invention is to provide a mold which shall be desirably adapted for casting car-wheels either in iron or in steel, and by the use of which in making steel wheels 2o the metal shall be concentrated and solidified and piping or blow-holes elminated therefrom.

To this end our invention, generally stated, consists lin a mold having a cope, a main or tread chill, a drag, a vertical pouring-head inclosing a runner communicating with a horizontal runner below the mold cavity, vertical hub and flange runners extending from the yhorizontal runner to the hub and flange por- 3o 'tions of the mold-cavity, an edge-chill forming the wall of the front of the rim portion of the mold-cavity or that opposite the flange, a ring-chill adjoining the edge-chill and forming part of the wall of the adjacent portion of the mold-cavity for the'front plate, and

a hub-chill forming the front wall of the hubspace of the mold-cavity.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a vertical central section through a car-wheel mold embodying our invention, and Fig. 2 a plan or top view of the same.

In the practice of our invention we provide a mold which, as herein shown, is adapted to the formation by casting of a double-plate car-wheel, the mold-cavity having a centrali hub-space l, an outer rim or tread-portion Space 2, provided with a space 3 for the usual rail-flange on its lower side, and spaces 4a 5 for front ad back plates orY webs, conl support of sand, extending between its center and its periphery. The nowel is closed on its lower side by a bottom plate 13, to which is connected on one side a vertical pouring-head 14. The cope and drag are filled with sand, which is compacted therein in the usual manner, so as to present upper and lower mold-cavity surfaces in accordance with a determined pattern, and the annular space between the side plates of the wheel and the cylindrical space within its hub are formed, respectively, by cores 15 and '16. A main runner or pouring-channelpl? extends downwardly through the pouring-head 14 to its lower end, andvthence extends horizontally across the mold in a box or casing formed centrally on the bottom plate 13 to or near the line of the opposite side of the rim portion of the mold-cavity. The horizontal portion of the runner 17 is, as invprior practice, connected by vertical hub-runners 18 with the portion of the mold-cavity surrounding the hub-core 16, and is also connected by vertical lange-runners 19 with the back or lower side of the portion 3 of the mold-cavity in which the flange is formed. Said flange-runners are not in and of themselves claimed as of our present invention, and the same, in operative combination with other members of a mold, form the subject-matter of a separatechill 20, the saine being an annular plate of metal placed on top of the main or tread-suri face chill l1 and extending inwardly therefrom for a distance equal to the front thickness of the rim of the wheel. The edge-chill 2O may be either formed integral with the tread-surface chill 11 or be a separate piece suitably connected thereto, as preferred.

The portion of the Wall of the front-plate space of the mold-cavity adjacent to the rimspace is formed by a ring-chill 21, the saine being a metal ring of circular section, which is divided into a series of segments for the purpose of its ready removal after the casting has been made, and also to afford the proper elasticity to admit of the shrinking of the wheel upon it in cooling.

The upper end of the hub-space l2 of the mold-cavity is closed by any annular metallic hub-chill 23, which forms the Wall of the mold-cavity on the upper and front face of the hub-space and is directly above and opposite to `thehub-runners 18,\through which the molten metal is supplied thereto in` casting a Wheel.

In casting a car-wheel in' a mold substantial-lyasabove described the molten metal is poured from the ladle into the top'of the pour# ing-head 14,and after passingdownwardlyand transversely thro ugh the main runner 17 risesN therefrom through the ange-runners 19 and hub-runners 18 into the rim and hnbf portions,

respectively, of the mold-cavity, entering the rinr portion at the'back' of the space 3 therein for the formation of the flange, solidly1 filling therim portion and abutting against th e edge4 chill 20` at the top thereof, and flowing in# wardly therefrom through the portions 4J" 5fL of the mold-cavity, in whiclr the front and back plates of the wheel are formed,joinin g therein with the molten metal supplied tothe hubspace of the mold-cavity by the hub-runners18, which metal iiows outwardly from the hub-space through the front and back plate spaces and abuts at the top of the hubspace against the hub-chill 23.

By the employment of the'edgechilll 20, located directly opposite the incoming molten metal supplied through the ange-runners 19, andthe use of the adjacent ring-chill 23 the metal is solidified and concentrated at and adjacent to the front face of the rim and the junction of the front plate therewith, and an y secure by Letters Patentl. The combination, in a mold for casting car-wheels, of a cope, a drag, an interposed main or tread-surface chill, a vertical pouring-head inclosing a main runner or pouring channel, a horizontal runner communicating therewith and located below the mold-cavity, vertical flange-runners connecting said hori- Izontal runner with the Vliange-space of the `mold-cavity, and an edge-chill forming the wall of the mold-cavity on the side of the rimspace thereof opposite the flange, substantially as set fortlr.

2. The'combination, in a mold for casting car-Wheels, of a cope, a drag, an interposed main or treadsurface' chill, a vertical pouring-head inclosinga main runner or pouringchannfel, a horizontal runner-communicating therewith and located below'the mold-cavity, vertical flange-runners connecting said hori zontal runner with the flange-space of the moldcavity, an edge-chill forming the Wall of the mold-cavity on the side of the rim-Space thereof opposite the flange, and a ring-chill formingthe wall of the mold-cavity at and adjacent to the inner andupperportion of the rim-space thereof, substantially as set forth.

3. The combination', in a mold for casting car-Wheels, of a cope, a drag, an interposed main or tread-surface chill, a vertical pour ling-head inclosing a main runner or pouringchannel, a horizontal runner communicating `'therewith and located below the mold-cavity, `vertical hub-runners connecting said horizontal runner with the lower portion of the hub-space of themold-cavity, and ahub-chill forming the upper end Wall of the hub-space, substantially as set forth.

GEORGE W. CUSI'IING. JOHN W. RAMPE. Witnesses:

JAS; A. Down, WM. A. BATES;

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