US404187A - Chaplet for sand cores - Google Patents

Description

(No Model.)

A. J. FISHER.

GHAPLET FOR SAND cons.

No. 404,187. Patented May 28, 1889.

N PHERS. Fhnmiilhognpher, Waahinglon, D. C.

UNITED STATES ALVA J. FISHER, OF

CHAPLET FOR SPECIFICATION forming part of Letters Application filed September 28, 1888.

PATENT OFFICE.

CHICAGO, ILLINOIS.

SAND CORES.

To all whom it may cmwcrn: I

Be it known that I, ALVA J. FISHER, residing at Chicago, in the county of Cook and State of Illinois, and a citizen of the United States, have invented a new, useful, and I1nproved Chaplet for Sand Cores, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a vertical section of aflask used in casting car-wheels. Fig. 2 is an underview of the upper section of the flask. Fig. 3 is an elevation of a chaplet, full size. Figs. 1 and 2 are more particularly designed to show the method of using chaplets.

Chaplets as heretofore used have been made of iron, and as they are used in casting carwheels for the purpose of preventing the sand cores from floating they remain in the wheel. Iron chaplets are subject to several objections or difficulties, as, owing to the mass of molten metal used in casting car-wheels, they are liable to be melted or partly melted, so as to leave the metal of the wheel thinner on one side of the coring, or to entirely ruin the cast ing. They are also liable to chill the iron around them sufficiently to form startingpoints for checks andcracks.

The object of my inventian is to overcome these difficulties in using iron chaplets, which I accomplish by making my ehaplets of compressed or solidified carbon, which do not melt or weaken under high heat, which do not chill the iron, and which do not become loose or work out of the finished wheel.

In the drawings, a b indicate the upper and lower portions of a flask.

a are the ribs or radial bars of the upper section, which are ordinarily closer together and more numerous than shown in Fig. 2.

0 indicates the usual iron ring or annulus used for chilling the tread of the wheel.

e is the sand core.

f is the under support.

g are holes for inserting the necks of the chaplets.

h is a chaplet havinga swell, h, and a shoulder, 7L which rests against the frame or skeleton of the upper section of the flask, as shown in Fig. 1.

2' is the molding-sand.

j is the hub-core.

The flask and the manner of molding oarwheels form no part of my invention, and as they are well known further description is not deemed necessary or essential. The chaplets are placed in the holes 9 of the flask-top, and project therefrom a length equal to the desired thickness of the metal. The oppositelyinclined swell 7t prevents the chaplet from coming out of the finished wheel. These chaplets can be manufactured of carbon-such as is used in the manufacture of points for electric lampsand in substantially the same manner, and be dealt in as a separate article of manufacture. Chaplets so made, as I have determined by actual use, are of great advantage in the casting of car-wheels, as by their use defective or imperfect Wheels rarely occur, whereas before they were of such frequent occurrence as to materially increase the cost of the manufacture of perfect wheels.

IVhat I claim as new, and desire to secure by Letters Patent, is

1. As a new article of manufacture, a chaplet composed of solid carbon, substantially as 'described.

2. A chaplet composed of solid carbon and having a shoulder, 7L2, and oppositely-inclined swell 72/, substantially as described.

' ALVA J. FISHER. Witnesses:

JULIA FISHER,

HARRY T. JONES.

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