US1871586A - Casting car wheels - Google Patents

Casting car wheels Download PDF

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Publication number
US1871586A
US1871586A US430957A US43095730A US1871586A US 1871586 A US1871586 A US 1871586A US 430957 A US430957 A US 430957A US 43095730 A US43095730 A US 43095730A US 1871586 A US1871586 A US 1871586A
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Prior art keywords
core
wheel
wheels
car wheels
ring
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US430957A
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Jr Charles Cobb
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Jr Charles Cobb
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/28Moulds for peculiarly-shaped castings for wheels, rolls, or rollers

Description

Aug. 16, 1932. OBB .R 1,871,586
CASTING CAR WHEELS Filed Feb. 24, ]950 Patented Aug. 16 1932 CHARLES GQBB, J'R., OF MARSHALL TEXAS CASTING can WHEELS Application filed February 24, 1930. Serial No. 430,957.
This invention relates to an improvement in casting car wheels.
v The standard car wheel used at'the present time by railroads has a heavy'solid hub. These wheels, as now cast, according to stand ard methods, cool veryslowly on account of the mass of metal in the hubs, and it takes about fifty minutes to cool. each Wheel so that it may-be handled and carried to the annealing pits.
rily cast by a round straight core, which is objectionable on account of the slow'cooling incident to the mass of metal in the hub.
The object of this invention is to secure a more rapid cooling of the hub in relation to the cooling of the other sections of the wheel, thus enabling each wheel to be shaken out ofthe mold and pitted hotter and in quicker time than in ordinarypractice.
This result may be accomplished by inserting a metal ring in the mass of the hub near the centelywhich metal ring may be initially attached to the core by .wire nails or the like.
In the accompanying drawing:
Fig. 1 is a top plan View of. a form of I core;and
Fig. 2 is a side elevation partly in section of the same.
The core, whichis usually of molded sand, has its opposite ends usually bevelled to provide seats in the mold to rigidly hold the core in place and against displacement, and as shown in Figs. 1 and 2, the core 7 has ametal ring 12 surrounding the same near the center and is attached to the center core by suitable means, as Wire nails 13. or the,
like. This metal ring 12 is embedded in the mass of the metal forming the hub of the wheel and causes the wheel to cool much quicker than ordinarily.
the impression of the Wheel and the cavity for the metal. The core 7 is secured in place These wheels are ordina and the casting removed in the usual way.
By means of using the ring 12. aroundthecore, the metal in the hub is divided to a more uniform section. It has been found that with'this methodit is possible to shake out and pit the wheels about ten minutes quicker than in the ordinary way, whichlatter required about fifty minutes for astandard 750# wheel. v
With this production, a much better product is produced than heretofore, improving the essential strength ofthe wheels under the prescribed drop and thermal tests.
I claim:
1. In a mold for casting car wheels With hubs, a core for forming the hub of the Wheel, and hav ng a metall c cooling ring surroundlng the corein spaced relation and attached to the circumference thereof to ex cuinference of the core. r I
In testimony whereof I have signed my name, this 12th day of February, in the year one thousand nine hundred and thirty.
CHARLES COBB, JR.
- hers forisupporting'the ring from the cir- V in the mold with its ring extending 'outwardly therefrom. As the metal is poured,
it flows through the chamber or cavity and about the ring 12 surrounding the core 7 50 After cooling sufiiciently, the mold is opened
US430957A 1930-02-24 1930-02-24 Casting car wheels Expired - Lifetime US1871586A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637071A (en) * 1950-03-25 1953-05-05 Ventura Tool Company Core for molds
US2893371A (en) * 1957-04-02 1959-07-07 Gen Motors Corp Expansion joint

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2637071A (en) * 1950-03-25 1953-05-05 Ventura Tool Company Core for molds
US2893371A (en) * 1957-04-02 1959-07-07 Gen Motors Corp Expansion joint

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