US1134260A

US1134260A - Bolster.

Info

Publication number: US1134260A
Application number: US71769612A
Authority: US
Inventors: Howard W Elverson
Original assignee: Pressed Steel Car Co
Current assignee: Pressed Steel Car Co
Priority date: 1912-08-29
Filing date: 1912-08-29
Publication date: 1915-04-06
Anticipated expiration: 1932-04-06

Description

H. W. ELVERSON.

HOLSTER.

APPMCATION FILED AUG.29,1912.

Patented Apr.. 6, 1915.

1HE NORRIS PETERS CO PHOTU-LITHQ, WASHINGTON, D C.

rn sauras HOWARD W. ELVERSON, 0F BELLEVUE, PENNSYLVANIA, ASSIGNOR TO PRESSED STEEL CAR COMPANY, OF PITTSBURGH, PENNSYLVANIA, .A CORPORATION OF NEW JERSEY.

BOLSTER.

Specification of Letters Patent.

Patented Apr. 6, 1915.

T0 all whom it may concern Be it known that I, HOWARD W. ELvnRsoN, a citizen of the United States, residing at Bellevue, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Bolsters, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it ap- Eertains to make and use the same, reference eing had to the accompanying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact de tails of construction shown and described, as it is obvious that various modifications thereof will occur to those skilled in the art.

My invention relates to bolsters for trucks for railway cars, and more especially to that class of metallic bolsters which are built up of steel plates pressed to shape and then riveted together.

An advantage of the present invention is to provide an improvement in the type of bolster which can be used in place of a cast steel bolster, where owing to the peculiar construction of the trucks, it has frequently been impossible to use pressed steel bolsters of sufficient strength of the usual type, and so to a certain extent obtain the advantage of both the cast steel and pressed steel bolster.

Another advantage of the present invention is to provide an improvement in the type of bolster which can be readily applied in place of cast steel bolsters to different types of truck with only minor changes, as

for instance, a bolster of certain capacity may have the central portion which is made of pressed steel, uniform in size and material for various heights of cars, the only changes necessary being an alteration in the end extension members of the bolster'to suit the required conditions7 thus adapting the bolster for interchange with bolsters already in use, so that trucks equipped with other forms of bolsters may be repaired with my improved bolster.

Another advantage of the present invention is that the plurality of superimposed trough shaped members formed of pressed steel are so united as to form a bolster in which the greater part of the riveting may be done from the outside, with the exception of the rivets for securing the center brace member in the upper trough shaped member, which may be applied before the lower trough shaped member is secured in position, and the rivets for securing the end extensions to the end of the pressed member, which maybe also applied before the lower trough shaped member is secured in position.

The invention consists in improvements in the type of bolster, the central portion of which is made of rolled or pressed steel and the end portions of cast material. The outline of the central portion is somewhat in the form of an inverted trough shaped member superimposed upon a lower trough shaped member, the adjacent portions of the members being provided with outwardlyprojecting flanges or extensions which are secured together. To the extremities of the trough shaped portions, ends in the form of castings are secured, forming extensions of the bolster and providing seats for the springs and the usual column guides.

In the accompanying drawings illustrating my invention, in the several figures of which like parts are similarly designated, Figure l is a plan view of a truck bolster constructed in accordance with my invention; Fig. 2 is a side elevation of the same, one end of the bolster being shown in section taken on line 2-2 of Fig. l; Figs. 3, 4, 5 and 6 show modifications of the end castings. Fig. 7 is an end elevation of the bolster, and Fig. 8 is a section through one 0f the end castings of line 8 8 of Fig. 2.

The main body of the bolster consists of an inverted trough shaped member l, preferably deeper at the center than at its ends and preferably formed of a single plate of steel pressed to shape, although this is not essential as it may be built up of two side members provided with inwardly projecting flanges on its lower edges and a top plate riveted to said flanges. In either event, however, an inverted trough shaped member is formed. The lower edges of this member are provided with longitudinal outwardly projecting flanges 2. The lower member consists of a trough shaped member 3 also preferably deeper at its center than at its ends and preferably formed of a single plate of steel pressed to shape. The upper edges of this member are provided with longitudinal outwardly projecting flanges 4, which are adapted to be secured to the longitudinal projecting flanges 2 of the upper inverted trough shaped member.

5 indicates a center brace, which may preferably be a malleable casting provided with a vertical opening for the reception of the king pin. This brace contacts with the top and side portions of the inverted trough shaped member l, and is riveted to the sides of said member by means of the flanges 6.

7 indicates the center bearing plate, and 8, 8 the side bearings, which may be of any suitable or preferred form.

Tov each end of the body portion of the bolster above described a casting 9 is riveted. This casting forms a seat for the springs 10, and is also provided with extensions for attachment to the body portions of the bolster. These extensions are shaped in such a manner as to fit and be secured to the top and sides of the member 1 and to the end portion ofV the member 3 as follows: The top portion 11 fits in and is riveted to the under side of the top member 1 ,the vertical side portions 12 lit inside and are riveted to the sides of the trough shaped member 1 and the lower sloping portion 13 fits the upper side of the end ofthe lower trough shaped member 3 and is riveted thereto.

To accommodate the springs 10 the portion 14 of the casting 9, constituting the spring seat is made hollow for the reception of the ends of the springs, and it is shown in the drawings as being of greater width Athan the portion engaging with the bolster body; but if necessary this condition vmay be reversed and the portion engaging the bolster may be wider than the end forming the spring seat.

In Fig. 2 of the drawings, the spring seat portion of the end castingvis shown on substantially the same level as the top of the end of the bolster. seat portion of the end casting is shown slightly below the level of the top of the end of the bolster and in Fig. l still farther below the level of the top of the end of the bolster. In Figs. 5 and 6 the spring seat portion of the end casting is shown in two different planes, both of them above the level of the top of the end of the bolster.

It will readily be seen that this range of adaptability, due to ability to apply different forms of end castings, results in the advantage that this bolster can be readily applied to different heights of cars, the only change necessary being lin the end casting.

Many minor changes in the construction and arrangement of myv inventionl can 'be made and substituted'for those'hereinshown without in the least departing from the 'i nature and Pl'iIlC'Ple of my' inventonfas In Fig. 3 the spring' for instance, the extensions of the endv castings may be made to lit the outer surfaces of the top, sides and bottom of the bolster body and in that manner be secured thereto.

What I claim is :Y

1. A car bolster comprising annverted trough shaped upper member and: a trough shaped lower member both of said members being deepest at their central portion and tapering thence toward their ends, and end extensions secured to said members.

2. A car bolster comprising an inverted trough shaped upper member and a trough shaped lower member'both of said members being deepest at their central portion .and tapering thence toward their ends, and end extensions secured to said members to form` spring seats. v

3. A car bolster comprising an inverted trough shaped upper member and a trough shaped lower member both of said members being deepest at their central portion and tapering thence toward their ends,l and end extensions secured to said members, said extensions havingrecesses for the reception of the ends of the springs.

4. A car Lbolster comprisingy an invertedi'f" trough shaped upper member and a trough shaped lower member both of said members being deepest at their central portion and -taperingvthence toward their ends, andy end extensions projecting mside of said mem bers and securedA thereto.

5. A car bolster comprising an inverted trough shaped upper member and a trough shaped lower member both of said members being deepest at Vtheir central .portion andl Y tapering thence toward their ends, and end extensions projecting inside of said Y' members andV secured thereto to form spring seats.

6. A box girder like bolster having` its shaped portion, said' portions having longitudinal outward projections secured to-f gether, and end extensions to form spring seats secured inside the end portions'of the body members.

7 A bolster formed substantially as Va box girder and comprising an upper inverted trough shaped member and a lower trough shaped ymember riveted together both of said members being deepest at their center,'and end extensions secured inside the ends of the box'girder member to'V form spring seats# 8. A pressed steel bolster composed of an inverted trough shaped top member, having longitudinal outwardly projecting flanges along the sides of its lower edges, a botat-their center, and end extensions secured tom trough shapedy member having compleJ-" inside the ends of the bottom and top members to form spring seats.

9. A box girder like bolster comprising two trough shaped members, having lateral ianges riveted together both of said trough shaped members having a greater depth at their center, and end extensions secured to the end portions of said trough [shaped members.

10. In a bolster the combination with a top member of an inverted trough shape and a bottom trough shaped member riveted thereto through the medium of laterally projecting longitudinal flanges both of said members being deepest at their centers and tapering thence toward their ends, and end extensions secured to said trough shaped members.

1l. A car bolster comprising an inverted trough shaped upper member and a trough shaped lower member, one of said members being of greater depth at its center than the other member, and members securing said trough shaped members together and forming end extensions thereof.

In testimony whereof I aiix my signature in presence of two witnesses.

HOWARD W. ELVERSON.

Witnesses:

\ FRANK E. MILLER,

G. C. LAMBE.

Copies of this patent may 'ne obtained for ve cents each, by addressing the Commissioner of Patents,v Washington, D. C.