US427052A - Chill for car-wheels - Google Patents

Description

(No Mode l.)

P. OONNELLY. V CHILL FOR GAR WHEELS.

No. 427,052. Patented May 6, 1 90.

a/IWM a ,.W I; Q 6mm UNITED STATES PATENT OFFlCE.

PATRICK CONNELLY, OF ROCHESTER, NElV YORK.

CHILL FOR CAR-WH EELS.

SPECIFICATION formingpart of Letters Patent No. 427,052, dated May 6, 1890.

Application filed March 5 1890.

To all whom it may concern.-

Be it known that I, PATRICK OoNNELLY, a citizen of the United States, residing at Rochester, in the county of Monroe, in the State of New York, have invented certain Improvements in Chills for Cast-Iron Oar-Wheels, of which, the following is a specification, reference being had to the accompanying drawings.

My invention relates to certain improvements in the construction of chills for castiron car-wheels, which improvements are fully described andillustrated in the following specification and accompanying drawings, the novel features thereof being specified in the claims annexed to the said specificationj My improvements in chills for car-wheels are represented in the accompanying drawings, in Which- Figure 1 is a partial plan viewshowinga wheel or the pattern in place in the chill. Fig. 2 is a transverse section of the chill and wheel or pattern. Fig. 3 represents one of the radial plates detached in elevation. Fig. 4 is a section of one of the plates on the line 4. 4, Fig. 3. Fig. 5 is a section on the line 5 5, Fig. 3.

In the construction of my improved chill for car-wheels I prepare a suitable number of cast-iron radial plates A, and after arranging them in a circle, as indicated in Fig. 1, I cast an iron ring B around them while inclosed in suitable clamps, and subsequently finish the chill in a suitable lathe by turning the inner edges of the plates to the form adapted to give the proper shape to the tread and flange of the wheel. As indicated in Figs. 1 and at, the radial plates are beveled or wedgeshaped, so that they receive support from each other. Any suitable number of radial plates may be used in any one chill, according to the thickness of the plates, which may vary from one-quarter to five-eighths of an inch on their inner edges. In assembling the plates into the circular form the last plate is driven in firmly by any suitable means, so as to insure actual contact between the sides of all the plates. Nhen assembled in a suitable ring, and while clamped between suitable clamp-plates, the plates are inserted in a suitable mold and the ring B cast around them. As indicated in Fig. 2, the ring B is preferably of U shape in section, so as to Serial No. 342,715. (No model.)

hold the plates in place and firmly in contact with each other. The sides of the plates where the ring is cast upon them may be straight, as indicated at C, Fig. 3, although I prefer to provide them with a recess, such as D, Fig. 3, into which the ring projects. As the ring B contracts after casting, the plates are pushed against each other with great force. After the ring has been cast around the radial plates the chill is finished and made ready for casting car-wheels therein by turning the inner edges of the plates to the form desired for the flange and the tread.

The chill may be made of any desired size, and is used with the cope and drag in the same way as the ordinary solid chill.

The surfaces of the plates where they bear against each other are preferably dressed on one side at least and in order to facilitate this operation I provide the plates on one side with the projecting surfaces or facingstrips E, which reduce the amount of metal necessary to be ground away when the plates are trued up, which is most conveniently effected 011 the flat side of an emery-wheel. The depressions F between the raised surfaces also facilitate the escape of the gases formed in pouring the wheel. The plates may, however, be used without the depressions F.

The outer ends of the radial plates are preferably made of a reduced depth, so that the sides of the ring B come flush with the upper and lower surfaces of the chill.

By the use of my improved chill cast-iron car-wheels can be cheaply made perfectly true and entirely free from the ordinary defectssuchaschill-cracksandsweat-spots-as I have demonstrated by practical experience extending over a considerable period of time.

I claim- 1. The herein-described chill for cast-iron car-wheels, consisting of a series of wedgeshaped plates arranged in a circle, with their radial surfaces in contact, having their inner ends of a form corresponding with. the tread and flange of the wheel and secured together by a ring cast around their outer ends, substantially as described.

2. The combination, with a series of wedge shaped chill-plates A, dressed on one radial surface and arranged in a circle, with their radial faces in contact, of the ring B, cast around the outer ends of the plates, substantially as described.

3. The combination, with a ring of Wedge- 5 shaped radial chill-plates A, having dressed facing-strips on one radial surface, of the ring 1-), cast around the outer ends of the plates, whereby their radial surfaces are held in close contact, substantially as described.

4. The combination, with a ring of Wedgc- I0 shaped radial chill plates, having their outer ends of reduced depth, of the ring B, cast about the reduced ends of the plates, substantially as described.

PATRICK CONNELLY.

Witnesses:

GEO. B. SELDEN, C. G. ORANNELL.

Images