US65642A - Improvement in the method - Google Patents

Description

w. BUTCHER, Jr. &'T. SHAW. METHOD OF FORMING WHEELS, TIRES, &c., BY 'GASTINGS.

No. 65,642. Patented June 11, 1867.

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UNITED S ATES PATENT OFF-ICE.

WILLIAM BUTCHER, JR., or SHEFFIELD, ENGLAND, AND THOMAS, SHAW, or PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN THE METHODOF FORMING WHEELS, TIRES, &c., BY CASTING.

Specification forming pal-rt of Letters Patent No. 65,64), dated June 11, 1867.

To all 'whom it may concern.-

Be it known that we, WILLIAM BUTCHER, J r., of Sheflield, England, and THOMAS SHAW, ofthe city and county ot'lhiladelphia, Pennsylvania, have invented anew and Improved Apparatus for Wroughting Cast Metals; and we hereby declare the following to bea full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters marked thereon.

Our invention consists in a mode of creating a pressure by centrifugal force upon the metal while in a molten state, as hereafter described. In order to enable others to use and practice our invention, we will proceed to describe its eoi'istruetion and mode of operation.

011 reference to the accompanying drawings, which form a part of the specification, Figure 1 is a side view. Fig. 2 is a vertical section through the center of all that part above line v Similar letters refer to similar parts, of which a, Fig. l, is an iron column united to the diskb'ase I), and braced by three ribs, 0, mounted on-and united to which is a covering, f, which surrounds and protects pulley g, for the purpose as hereafter described. On the top of said coveringfis a hearing or journal-box, 0, Fig. 2, for the support of shaft D, (represented by dotted lines in Fig. 1,) its lower hearing being at the base 19, and on this shaft pulley g revolves, for the purpose as hereafter described. On the top of said covering f is secured, by means of screws, ametal ring, h, provided with three teeth inclined in one direction, as indicated in Fig. 1.

i is a metal ring, to which is secured a handle, Said ring 1' is provided on its outer half with inclining teeth fitting onto the teeth of ring h.

The inner half of ring iis allowed to project beyond the teeth, as indicated in Fig. 2, for the purpose of allowing said ring 11 to revolve and be supported concentrically by said projecting half revolving on the inner side of ring 11-, all for the purpose as hereafter described.

The upper end of shaft D terminates in a disk, R, Fig. 2. In the center of the top side of said disk is a projecting nib, as shown in Fig. 2, for the purpose of keeping in dd moon- I centric with the same when operated, as hereafter described. Said mold m rests alternately upon ring 6 and disk R,-and is free to be lifted from both, all for the purpose as hereafter described.

The object of this invention is to cast metal in a revolving mold for the purpose of purifying castable metals of their gases and bringing their different atoms in proper relation to each other in respeet to their affinities, and in making itmore homogeneous by reason of centrifugal force, which operation is particularly applicable to the wroughtmg of steel, especially wheels and tires.

The apparatus is put in operation in this wise: A belt communicating with arevolving shaft and with pulley g, (the coveringf is open on one side, forming a mouth for the admission and protection of said belt,) a revolving I110- tion of five hundred revolutions per minute (more or less, according to size, &c.,) is given said pulley g and shaft D, the immediate and desired effect of which is to revolve mold m, at which time the molten metal is poured into said mold through the aperture 02-, and when the metal is sufiioiently congealed the revolvin g mold is arrested by turning ring ione-third of a revolution by means of handle K, which movement causes the mold to be lifted from the revolving disk R. The mold will revolve for a time on said ring i until the inertia is overcome, after which the mold can be re moved, and the apparatus is in a condition to repeat the operation. The mold is then placed on said ring 4', and is lowered as gradually on revolving disk B as it was lifted. from the same by the partial revolving of ring 2 as aforementioned.

During the course of the foregoing opera tion the ,molten metal is thrown violently to the periphery, and the particles and atoms of the metal are rubbed, rolled, and wroughtuntil the inertia of the molten metal is overcome as by this method metal can be worked in the fluid state to advantage, when the same metal would have previously crumbled under the usual forging method.

The invention is designed more particularly for the casting of car-wheels, loeomotive-tires,

ingots, Sac.

It Will be evidentthatmoldso't' various shapes can be employed, and that slight changes in mechanical structure could be effected without any alteration in the result.

Wetherefore do not wish to confine ourselves to the exact mode herein described of constructin g the machine or of shaping the molds; but

What we (10 claim, and desire to secure by Letters Patent, is

1. \Ve claim as our improvement of the method of. forming tires, wheels, and other articles of metal by casting, supporting the mold while the melted metal is being poured into it, upon, but unconfined to, a revolving disk, substantially as and for the purposes specified.

2. In combination with a mold and revolving disk, as set forth in the foregoing clause, we claim the two rings h and i, or their equivalents, substantially as and for the purposes specified.

WM. BUTCHER, JR. (L. s.] I THOMAS SHAW. 1.1, s]

Witnesses:

A. E. WITMER, GEO. R. TAYLOR.

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