US5095A - Of albany - Google Patents

Description

W. V. MANY.

Gar Wheel.

No. 5,095.- Patented May], 1847.

wM. v. MANY, or ALBA-NK NEWf-YORK.

' o'As'r-fmon cAmwHnnL Specification of LettersPatent No. 5,095,- dated May 1, 1847.

Improvement in the method ofM'aking Cast- Iron'Railroad-Wheels,-and that the following is a full, clear, and exact description of the principle or character which distinguishes it from all "other" things before known and of the'manner' 'of--m'aking, constructing, and using the same, reference being had to the accompanying drawings, making part of this specification, in which Figure 1 is a perspective view of the wheel; Fig. 2, a cross vertical section of the mold with the pattern therein; Fig. 3, a horizontal section of the same taken at the line (X, X) of Fig. 2; and Fig. 4, a separate view of the central pin.

The same letters indicate like parts in all the figures.

From the time that the value of railroad wheels with a chilled tread and flanch was established, the difficulty of thus casting them has been recognized, for it was soon ascertained that the chill sets and cools the metal of the rim before the parts which connect it with the hub, and these in cooling "shrink and necessarily break or become so Weak as to break when subjected to strain or jar. To obviate this the hub was for a long time made in sections, termed the split hub, to enable it to open and yield to the contraction of the spokes, arms, or other connections between the hub and rim; but this construction is attended with serious ob jections, such as the want of strength in the hub and the necessity of putting on wrought iron hoops or hands to secure the segments together. These recognized objections to the split hub have led to numerous improvements and suggestions, all more or less objectionable, for casting the wheel in a sin gle piece by so forming the connections between the hub and rim as to admit of contraction without breaking; but as all these require the metal, as it contracts, to bend, it obviously must be weakened.

The object of my invention is to avoid all the objections to the split hub, and to the the same time, and without undue strain on anyfi'part, Iam thus enabled' to cast a wheel inone single piece, without 'the split hub, and to connect the 'rimar'id hub-inany de; sired form, the plain disk being in ihy estimation the-most simple; and effic'ient.

- 'ln' the accompanying drawing '(a) repre sent's a'metallic plate'th'e surface of which is formed to correspond withithe shape 'of the innerface of a railroad wheel,"-b'ut which for example is made to' correspond-with the face of the wheel'represented at Fig. 1 of the drawings. In the center of this plate there is a hole to receive a metal pin (6), from which projects a wing (c) After this pin has been inserted the pattern (cl) of the wheel is put on, and then a metalring (e), the inner periphery of which corresponds with the form of the tread and flanch of the wheel, as chills for casting railroad wheels are usually made, and onto this ring is placed the cap (f) of a mold that the outer face of the wheel maybe molded in sand,

when it is desired to chill only one side of j The upper faceof the pattern (d) gether and secured in the usual way, the central pin inserted and the metal run in,

and so soon as the central hole is chilled, the pin (12) must be driven out to prevent the contraction of the cooling metal from gripping the pin too hard. But the wheel may e cast Without the central hole in the hub,

have the form of the intended wheel, as

this will only require the ring to be removed before the pattern can be taken out.

When it is desired to cast the wheel with the entire surface chilled another plate similar to the plate (a) but formed to cor-- respond with the shape of the outer face of the Wheel is substituted for the cop, the end of the central pin being fitted to a hole in the center of this plate.

From the foregoing it will be, seen thatby this mode of procedure all the parts of the Wheel contract equally and at the same time, and that in this Way strong and solid. wheels can be cast, thus avoiding the 11eces-- sity of making the split hub, or of giving such form to the part or parts that connect the rim and hub as to admit of yielding to the contraction after the rim has been set} by chilling. It Will be obvious that instead of connect- Q ing the hub and rim by a disk, this connec tion canbe formed With spokes, arms, or in any other desired manner which will admit of molding and chilling, and therefore I 3 do not Wish to limit myself to any form of- Wheel, but to vary the form thereof, or of the connections between'the hub and the rim in any manner that may be desired. a

What I claim as my invention-and desire to secure by Letters Patent is Casting the Wheels of railroad cars or 10- comotives with the chilled rim by chilling the part or parts that form the connection "or connections of the rim and hub, substantially as described, whether both surfaces of the Wheel be chilled or only one as described,

.whereby'a better Wheel can be cast in one piece than by any other plan With which 1 am acquainted.

WILLIAM V. MANY. Witnesses:

C. P. VAN NEss, WILLIAM H. SEWARD.

Images