US2037336A - Railway car truck - Google Patents

Description

April i4, 1936. H. A. Mol-:LLER 2,37,

' RAILWAY CAR TRUCK 4 Filed Oct. 2l, 1953 2 Sheets-Sheet l NEW DESIGN 4 n. o DESIGN 435 they are bended by the same dies.

Patented Apr. 14, 1936 RAILWAY CAR TRUCK Harry A. Moeller, Bexley;4 Ohio, -assignor toThe Buckeye Steel Gastings Company, Columbus,

Ohio

Application .October 21, 1933, Serial No. 694,667-

7 Claims.

This invention relates to improvements in car trucks and` more especially to novel wear plates for railway truck side frames and bolsters.

. In railway car trucksfit is customaryto engage the-truck side frames and holsters in a more or less loose tting manner so. as to permit the truck bolster to movably cooperate with the frames and to maintain proper engagement between the Vframes and bolsters as the truck springs reciprocate under load and during transit. This produces relative motion between each truck bolster and the opposed side frames at the regions commonly known as the columns on the frames and the column guide surfaces on the bolster. This relative motion combined with transverse forces, as well as forces in the direction of the track, causes wear to take place between the engaging surface. In time, and especially in the case of trucks receiving such severe service as tender trucks, these wear surfaces become worn tothe extent that renewal thereof is necessary.

Provision for renewing wear surfaces is not -fundamentally new. However recentlyconsidy erable effort has been made in the direction of 2 5 welding on to the original castings renewable plates which, when worn, are simply renewed and replaced, thereby restoring the original dimensions. In one such proposal wear plates formed of pressed channel pieces of metal are welded to 3o kthe bolster and to the frame. The mechanical difliculties encountered in an application of this character arise from the fact that in bending plates to channel form there is a certain amount of variation between different plates-even though This variation cornes about by the Wear on the vdies and possibly heatI treatment of the plates, and the variation in gauge of the plates themselves. This variation, therefore,- makes it diiicult to obtain a snug fit between the channel plates and the surfaces on the frames and bolsters towhich these plates are attached. This condition of fitting could be improved somewhat by accurately machining the castings to fixed dimensions, in which case all the variations would reside in the plates. Machining of castings is an expensive operation.

The primary object of the present invention is to eliminate the above mentioned disadvan- 50 tages and I have found it would be entirely satisfactory to attach the plates to unfinished castings providing the plates are shaped in a special manner and the castings are so made as to receive these special plates.

With the foregoing object outlined and with (Cl. V10S- 207) other objectsin view which will `appear as the description proceeds, theinvention consists, in .the novel features hereinafter described in detail,

Villustrated in the accompanying drawings and more particularly pointedv out in the appended `5 claims.

In the drawings:

Fig. lis a fragmentary top plan view of aside frame and bolster assembly, partly in horizontal section; such section being taken on theline I'-I lo ofv Fig. 2. This assembly shows` a known or old design. Y

Fig. 2 is a part vertical sectional View andpart elevation of the same taken on the line 2 2 v.of Fig. `1. l5

Fig. 3 is a horizontal sectional Vview of my invention shown applied to Vthe columns .of a. side frame and taken on theline 3-3 of Fig. 4.

Fig.,4 ,is a side elevation of the structure .Shown in Fig. 3. n 20 Fig. 5 is a top plan view of an end portionoi a bolster provided with my improved wear plates.

Fig. V6 is a side elevation of the structure shown in Fig. 5 with the bolster placed in vertical position. to facilitate ilustration. 25

Fig. 7 is a fragmentary plan view of .a portion of a bolster and a horizontal sectional view of a` portion of a side frame and illustrating amodification of the, invention.

Referring first to Figs. 1 and 2, 8 designatesa() bolster having column guide surfaces provided with vertically arranged channel wear plates '9 having vtheir vertical edges secured to the bolster 'by lines of'welding I0, and their top and bottom edges welded in position by horizontal lines 0h35 welding II. Here also columns I2 are provided with. known channel wear plates I3 which are welded to the columns by vertical lines of weldingv I4' and by horizontal lines of welding I5.

'Ihe wear plates shown'in Figs. 1 and 2 and 4o the manner of securing the same in position are open t the objections heretofore mentioned, and

in accordance with the invention, the wear plates are made of L-shaped instead. of channel shape, and as shown in Figs. 3 and 4 a pair of L-shaped 45 wear plates I6 are vertically positioned on columns I'I of a side frame and are secured in position by vertical lines of welding I8 and horizontal lines of welding I9. I prefer to provide the columns with rabbets 20 to receive the wear 50 plates.

As shown in Figs. 5 and 6, the guide surfaces of the bolster are also provided with rabbets 2| to receive L-shaped wear plates 22 which are secured in position by vertical lines of welding 23 55 the plates may be extended, as shown in Fig. 7,

and the adjacent extremities of these Wings may be weldedtogether and to their respective castings by Vertical lines of welding 21 and 28..

,'Ftrom the foregoing it will be understood that,H in Figs. 3 to 7 inclusive, I have disclosedrmethodst for applying renewable wear plates in a manner that avoids the diiiiculties mentioned above in connection with welding on channel pieces, and in each instance I show plates bended in the A shape of angles and that these plates are welded on to the casting along all edges of the plate Ain such manner that the welding does not project beyond the surfaces that are exposed to wear.

Obviously the purpose of .the new construction is to vobtain a snug t between each wear plate and the casting to which it is'attached Without being confronted with the requirement of snugly fitting channel pieces over a section such as that of a frame column or between fixed lugs such as those on a bolster. Furthermoreit'is obvious that angle pieces can be snugly attachedregardless Aof the variation in the dimensions of the frame column or the spacing of the bolster lugs. Channel pieces have to be made of xed sizes for `,bolsters and columns, whereas angle plates ofa -,giv'en -size` may be used with bolsters and columns "of substantially all sizes.

- ,While I have Ydisclosed what I now consider to some preferred embodiments of the invention, I am ,aware that changes may be made in the details disclosed Without departing from the spirit of the invention as expressed'in the claims.

, What I claim and desire to secure Vby Letters Patent is:

1. The combination with a railway truck side 'frame having acolur'nn, of a substantially L- shaped wear plate secured to the column, the co1- 4umn having a rabbet receiving said plate, the depth of said rabbet being equal to the thickness 'of the wear plate.

2. The combination with a railway truck side frame having a column provided with substantially L-shaped rabbets, of a substantially L- shaped wear plate arranged in each of said rabbets and secured to said column, the depth of each rabbet being substantially equal to the thick- V`ness of the wear plate which it receives, and the column having a surface flush withV the outer surface of portions of said wear plates.

3. The combination with a railway truck side frame having a column, of a substantially `L shaped wear plates spaced from one another, the vbolster having rabbets receiving said plates and said plates being secured to the bolster, the depth of each of said rabbets being substantially equal to the thickness of the wear plate which it receives, and a portion of said surface being ush with` portions of the outer surfaces of the wear plates.

6. In combination a railway truck side frame having vertical columns, a pair of wear plates protecting the bolster guide surfaces of each of said columns, each plate being substantially L- shape in horizontal section and the plates having wings extending toward one another but spaced apart, each column having rabbets receiving said plates, the depth of each of said rabbets being substantially equal to the thickness of the wear plate, means securing the wear plates to the columns, the bolster guide surface having an unprotected portion positioned between said plates and arranged flush with the outer surfaces of portions of said plates.

'7- In combination a railway truck side frame having vertical columns, a pair of wear plates protecting the bolster guide surfaces of each of said columns, each plate being substantially L- shape in horizontal section and the plates having wings extending toward one another but spaced apart, each column having rabbets receiving said plates, the depth of each of said rabbets being substantially equal to the thickness of the wear plate, means seeming the wear plates to the columns, the bolster guide surface having an unprotected portion positioned between said plates and arranged flush with the outer surfaces of portions of said plates, in combination with a car truck bolster having column guide surfaces provided with substantially L-shaped wear plates engageable with the wear plates of the vertical columns, each wear plate of the bolster being Vsecured to the bolster, said bolster having rabbets to receive the last-mentioned wear plates, and each rabbet of the bolster being substantially equal to theV thickness of the wear plate which it receives. `shaped wear plate secured to said column by HARRY A. MOELLER.

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