US1475180A - Railway-car truck - Google Patents

Description

Nm, 2?, i923 G. G. FLOYD RAILWAY CAR TRUCK Filed Feb. 12

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Patented Nov. 27,A 1923.

UNITED STATES i 1,475,180 PATENT oFFlcE.

GEORGE G. FLOYD, OF CHICAGO, ILLINOIS, ASBIGNOB T0 MEBICAN STEEL FONDRIES,

i DE CHICAGO, ILLINOIS, A. COBPCBATION 0F NEW JERSEY.

RAILWAY-CAB TRUCK.

Application lcd February 12, 1923'. lSerial No. 618,884. l

To allwhomtmycomem:

Be it known that I, VGEORGE G. FLOYD, a citizen of the United States, residing at Chicago, in the county of -Cook and State of Illinois, have invented certain new and useful Improvements in a Railway-Car Truck, of which the following is a specification.

This inventionV relates to a railway car truck combination.

As is well known in the art, that portion of the tension member between the bolster columns is subjected to bending stresses in addition to tension stresses. Consistent with other features of design, the distance be'- tween the bolster columns,` accordingly,

cases in which it is desiredto increase the spring capacity, with all springs being located between the bolster columns, some special arrangement preferably is used forl maintaining t e distance between the bolster columns at a minimum.

@ne object of the invention is to rovide a simple truck arrangement in w ich the spring lcapacity is increased, while at the same time the distance between the bolster columns and also the wheel base is minimized, the side frame made of maximum strength and minimum wei ht, and lample 4brake clearance is provide y Another object is to provide a simple and eicient truck of high spring capacity adapted to meet the various requirements under service conditions.

These and other objects are accomplished by means of the arrangement shown on the accompanying'sheet of drawings, in which--d Figure 1 is a fragmentary side elevation of a railway car truck, parts being in section, embodying my invention;

Figure 2is a fragmentary top plan view of thfesame arrangement; and

Figures 3 and 4, respectively, are sectional views taken in the planes of lines 3-3 and 1Q- 4: of lFigure 1. y

The various novel features of the invention will be apparent from the following description and drawings, and will be. articularly pointed out in the appended claims. Referring to the gures of the drawings, it willbe noted that my invention is` disclosed in connection with a railway car truck including an integrally formed side frame 10, having a tension member 11, compression member 12 and bolster columns y13. A

pringfplank 14` spans the distance between e said frames and'rests upon the tensionA member 11 between the bolster columns 13.

By means of this invention the spring capacity of the truck is increased by using more than four springs. In this particular instance, six springs are used, four centrally arranged springs 15 and two end springs 16. In order to accommodate these six standard springs between the bolster columns without taklng' up an excessive amount of roomthe end springs 16 are supported in an elevated position with respect` to Vthe other four springs 15. All of the spring seats are integrally formed with the spring plank 14. In this connection it will be noted that the end of the spring plank has a channel por.- tion 17 for forming the seats for the central group of springs 15 and has integrally ormed with the channelportion, the elevated spring seats 18 for supporting the end springs 16. It will also be noted that the horizontal portion 17 of the spring plank rests upon the u per horizontal surface of the tension mem r andithat the inclined side -portions 19 of the spring plank rest upon and conform to the inclined portionsy of the tension member just inside of the bolster columns 13. By thus sha in the tension member and the spring p anwith its seats at different elevations, a spring grouping of increased capacity can be located within a reasonable space between the bolster columns 13 without unduly increasing the distance between said bolster columns. The spring plank adjacent the tension member is provided with downwardly extending flanges 20 for embracing said tension member for positioning the spring plank with respect to said side frame.

By means of the arrangement above disclosed the objects of this invention are accomplished.

It is my intention to cover all modifica tions of the invention falling within the spirit and scope of the following claims.

I claim: y

o1. In a railway car truck, the combination of aside frame includin tension and compression members and bo ster columns, and a spring plank resting upon' said tension member between said columns and having integrally formed therewith sprin suporting seats on dilerent levels where` y an increased number of standard springs may be used between the bolster columns spaced apart a given distance.

2. In a railway car truck, the combination of a side frame including tension and compression members and bolster columns, the upper surface of the tension member between the bolster columns and immediately inwardly' therefrom being inclinedl downwardly andconnected by a horizontal portion, and a spring plank having horizontal and inclined portions resting respectively, upon horizontal and inclined portions of said tension member between the bolster columns and having integrally formed therewith spring seats at derent levels for minimizing the distance between the bolster ,Leraren GEORGE G. FLOYD.

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