US1293890A - Stop-casting. - Google Patents

Description

J'. F. OCONNUR.

STOP CASTING.

APPLICATION men JULY 1. |918.

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JOI-IN F. OCONNOR, 0F CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM I-I. MINER, OF'

' CHAZY, NEW YORK.

STOP-CASTING.

Specification of Letters Patent.

Patented Feb. 11, 1919.

Application led July 1, 1918. Serial No. 242,825.

To all whom t may concern.'

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented, a certain new and useful Improvement in Stop-Castings, of which the following is a full clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to Improvements in Stop Castings. y

One object of the invention is to provide a stop casting or cheek plate for railway draft riggings which will be of extremely strong construction, relatively light, easy .to cast and anneal, and preferably of uniform thiclc ness throughout.

Another and more specific object of the invention isv to provide a stop casting of the character above indicated which will possess unusual rigidity against longitudinal strains which effect is produced by the employment of convolutions formed in the casting, the convolutions being arranged to form X-bracing symmetrically'disposed with respect to the center line or neutral axis of the casting.

In the drawing forming a part of this specication, Figure 1 is an inside elevational view of a stop casting for a tandem draft rigging showing my improvements in connection therewith. Fig. 2 is a horizontal sectional view, taken substantially on the line 2 2 of Fig. 1. And Figs. 3, 4, 5 and 6 are vertical, sectional views, taken on the lines 3 3, 4 4, 5 5 and 6 6, respectively, of Fig. 1.

In said drawing, the stop casting is shown in the form of a malleable casting, the web of which is provided with a series of vertically extending bends or convolutions forming the front main stop 10, front limiting stop 11, front intermediate limiting stop 12, front intermediate stop 13, rear intermediate stop 14, rear intermediate limiting stop 15, rear limiting stop 16 and rear main stop 17. The web of the metal is bent alternately inwardly and outwardly as clearly appears from the dotted line 18 indicated in Fig. 2, to form the stop shoulders hereinbefore mentioned. The depth of the convolutions that are open to the outer side of the casting varies in accordance with the particular stop being formed, that for the center post which forms the two intermediate stops 13 and 14, being the deepest. Where the convolutions are open to the inner face of the casting, that is, between the sets of stop and limiting stops, the bottoms of the convolutions form bearing surfaces for the followers, as will be understood.

In order to render the casting of greatI inner face of the casting and the bottoms' thereof are flush with the back wall of the casting and in fact form the portions of the casting that bear against the draft sills and by which the castings are riveted. The convolutions A and B are formed as follows: Assuming that the convolution A starts at the left hand end of Fig. l, the same is extended first in a downward diagonal direction until it reaches a point approximately midway between the shoulders 10 and 11. It is then carried upwardly diagonally until it reaches a point substantially midway between the shoulders 12 and 13. The convolution A is then carried downwardlyto a point substantially midway between the shoulders 14 and 15, then upwardly to a point substantially midway between the shoulders 16 and 17, and finally downwardly until it terminates -near the right hand end of the casting, as

viewed in Fig. 1. The convolution B, assuming that it begins at the left hand end of the casting as shown in Fig. 1, is first extended diagonally upwardly to a point substantially midway between the shoulders 10 and 11. It is then carried first downwardly to a point between the shoulders 12 and 13, then upwardly to a point between the shoulders 14 and 15, then downwardly to a point between the shoulders 16 and 17, and finally upwardly to the end of the casting.

From the preceding description, considered in connection with the drawing, it will be noted that the convolutions A and B cross each other within the various posts or vertical convolutions that form the main, intermediate and limiting stops and the two convolutions A and B together, produce the effect of an X-bracing, the points of crossing being in the center of the casting vertically thereof or what may be termed the neutral axis of the casting. At the ends of the convolutions A and B and also at the points where a change of direction occurs between each set of shoulders, the convolutions are slightly enlarged as indicated at 19-19 to accommodate the head of a riveting tool and the casting is perforated at these various points as indicated at 20-20 to receive the rivets. In addition, a rivet hole 21 is formed centrally of they middle post on the center line of the casting. The X formation of the convolutions leaves what may be termed bosses 22 at the ends of the casting and other bosses 23-23 between the sets of shoulders. These various bosses 23 provide additional strength for the casting along its central axis and in addition, the bosses 23 provide additional wearing area for the ends of the followers. In actual practice, the casting will be made of substantially uniform thickness throughout and is free from T-sections.

The construction hereinbefore described is exceedingly strong and it will be noted that when pressure is applied to any stop shoulder, it is resisted by four sections of the metal which are perpendicular to the back plane of the casting. Two of these sections of the metal constituting the upper and lower flanges 24 and 25, extend horizontally and the other two are formed by the convolutions A and B and converge toward each other until they reach the middle of the corresponding stop, after which they diverge. The arrangement of the bracing in this manner not only produces a very strong casting but permits of the casting being made relatively light because of the effective distribution of the metal.

I claim: l

l. As an article of manufacture, a stop casting for railway draft riggings, said stop casting having vertical stop shoulders formed therein, and X-bracing convolutions extending from end to end of-and forming a part of the casting.

2. As an article of manufacture, a stop casting for railway draft riggings, said castr ing having main, intermediate, and limiting stop shoulders formed by vertical convolutions within the casting, said casting having also twoconvolutions vextending' lengthwise of the casting, said two convolutions being extended alternately diagonally upon a line extending lengthwise of the casting midway between the top and botto thereof. i 1

In witness that I claim the foregoing I have hereunto subscribed my name this 12th day of June, 1918.` i

JOHN F. OCONNOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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