US1169192A - Machine for casting wheels and like articles. - Google Patents

Description

APPLICATION FILED MAR 2, 1912.

Patented J an. 25, 1916.

ROBERT RADFORD, OF PHILA'QELPHIA, AND JAMES E. SHEAFFER, O F BURNHAM, PENNSYLVANIA.

MACHINE FOR CASTING WHEELS AND LIKE ARTICLE.

Specification of Letters Patent.

Patented Jan. 25, 1916.

To all whom it may concern:

Be it known that we, ROBERT RADFORD and JAMES E. SHEAFFER, citizens of the United States, and residents of Philadelphia, county of Philadelphia, State of Pennsylvania, and Burnham, county of Mifllin, State of Pennsylvania, respectively, have invented certain Improvements in Machines for Casting Wheels and like Articles, of which the following is a specification.

The object of our invention is to provide mechanism for properly pouring two different metal compositions into the same mold.

The invention relates particularly to the molds which are rotated,'and in which the molten metal is thrown against the inner periphery of the mold by centrifugal force; the invention being particularly adapted for molding or casting car or other wheels, or Wheel blanks, in which the outer surface or periphery of the wheel, or blank, is of a metal harder than the body of the wheel.

In the accompanying drawing :-Figure 1, is a longitudinal sectional view of a rotary mold illustrating our invention; Fig. 2, is an end View; Fig. 3, is a sectional view of a wheel made 'in accordance with our invention; and Fig. 4, is a sectional view of the mold for forming wheel blanks.

A is the rotary mold made, in the present instance, of three parts C, C, and D, detachably secured together. The parts C, C are the end plates of the mold and the part D is the intermediate ring or chill section of the mold. The several parts are shaped according to the design of wheel, or blank, to be cast. The section 0 is, in the present instance, an integral part of the shaft, which is adapted to bearings B, mounted on a foundation B.

a is the pulley or'gear by which the shaft is turned so as to rotate the mold at sufficient speed to cause the molten metal as it enters the mold to seek the inner periphery of the mold.

In order to properly pour the molten metal, it is essential that there shall be no time lost in thechange from one metal composition to another, and, therefore, we have provided a pouring head I having two mouths 2' and z".

This pouring head is connected to the mold A by a coupling E which is secured to the pouring head. The coupling has a reduced portion 0 in the present instance, adapted to fit in a recess in the cap section C of the mold. There is a throat opening from the terial and the pouring head is also provided with a lining h of fire brick or other suitable material. The pouring head is made in two halves I, as shown in Fig. 2, and these halves are connected together by bolts, or other fastenings, so that by this means in case of a stoppage the coupling head can be readily removed and parted and the obstruction withdrawn.

The pouring head is preferably mounted on a carirage N having wheels n-n and may be attached to the coupling E. in any manner desired. In the present instance, the pouring head has an extension which enters a recess in the coupling head, and the coupling head is attached to the extension by means of screws f, so that'it remains stationary While the mold is rotated.

The part D of the mold A is secured to the part C by bolts c-c and the part C is connected to the part D by detachable fastenings (Z so that after the casting is completed, the cap section C can be detached and the molded wheel or blank removed therefrom.

When it is desired to open the mold, the carriage N is backed away from the mold with the coupling E, after which the cap C is attached to a crane and the fasteningsd removed, when the head can be swung out and the cast wheel or blank Withdrawn.

In Fig. 3, we have shown a sectional view of a car wheel made in accordance with our invention in which the metal of the wheel at the periphery m consists of a manganese or equivalent alloy and the body of the Wheel is of soft steel. The compositions are intimately united during the process of casting to make a homogeneous steel structure.

In Fig. 4:, we have shown a mold in which the end plates C and C and the intermediate ring D have plain inner surfaces and are so proportioned as to make a mold for a wheel blank. instead of a complete flanged wheel. After this blank is cast it may be rolled in the ordinary process. ofmaking steel wheels. As the blank isa composite coupling E into the center of the mold and will be immediately thrown out by centrifugal force against the inner wall of the section D ofthe mold, filling the mold to the required depth. The molten soft steel is immediately poured in through the mouth z" before the entire mass of manganese alloy passes the lower end of said mouth so that the flow of the two metals is continuous and the softer metal is allowed to flow until the entire mold is filled and, assoon as the mold sets sufficiently, the pouring head is withdrawn and the cap plate of the mold detached, after which the cast wheel or blank is removed from the mold and the resulting product is a wheel or blank having a hard surface 00, Fig; 3, at its periphery of any depth desired, with a comparatively soft steel center or body.

While we have illustrated a mold used in the manufacture of car wheels, it will be understood that the invention may be used in casting wheels of other types, or any object requiring one character of metal on the periphery and another forming the body portion.

passage being below the other and com municating with the passage leading to the mold so that molten metal in one of said passages may immediately follow the molten metal in the other passage.

2. The combination in a rotary machine for casting wheels and like articles, of a shaft; bearings for the shaft; a rotary mold carried by the shaft; means for rotating the mold; a pouring head having a passage therein leading to the mold and having two independent mouths; a passage leading from each month to the passage communicating with the mold, one passage being below the other; and a coupling secured to the head and having a passage therein communicating with the passage in the pouring head and with the center of the mold.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribin witnesses.

R BERT RADFORD,

JAMES E. SHEAFFER.

Witnesses to the signature of Robert Radford: p

A. A. SEEVENSON,

J os. H. KLEIN. I

Witnesses to the signature of James E.

Sheafler: v I MARTz,

ORVILLE C. SKINNER.

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