US1758350A - Car truck - Google Patents

Description

May 13, 1930. v V s. P BUSH 1,758,350

CAR TRUCK Filed Sept. 15, 192'? 2 sheets-sheet Z Patented May 13, 1930 UNITED. STATES PATENT OFFICE SAMUEL P. BUSH, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE STEEL COMPANY, OF COLUMBUS, OHIO CASTINGS CAR TRUCK.

Application filed September 15,1927. Serial No. 219,707.

This invention relates more particularly to car trucks embodying lateral motion rollers between the spring cap and the bolster, and one object is to attain the maximum roller surface while another object is to impart additional stitl'ness to that portion of the spring cap which takes the load of the outer springs. The invention also has for its object the formation of the spring cap so that it will fit '10 within the columns of the side frame and be held against movement transverse to the side frame while it will retain in position the springs which may be housed or partly housed within the columns. An assemblage embodying the invention is illustrated in the accomianying drawings and will be hereinafter fully described, the novel features being particularly defined in the appended claims.

In the drawings:

Figure 1 is a side elevation of a portion of a car truck embodying the present improvements;

Figure 2 is a vertical section on the line 2-2 of Fig. 1;

3-3 of Fig. 1;

Figure 4 is a detail section on the line H of Fig. 2.

Figure 5 is a detail section on the line 5-5 of Fig. 1.

As shown, the side frame includes an upper compression member 1, a lower tension mem-, her 2, and columns 3 connecting said'memhers. The columns are of the arcuate form shown in Figure 3 to house or partly house some of the spring members and spring seats 4 are formed, on the tension member at the lower ends of the columns, the end of the spring plank 5 resting upon the tension member between said seats and flush therewitln The springs, indicated at 6, are supp orted by the spring plank and the spring seats, two of the springs, in the illustrated arrangement, resting partly upon the spring seats and partly upon the respectivelyadjacent portions of the spring plank. and the columns are formed with wings or lateral extensions 7 which aid in restraining.transverse movement of the springs relative to the spring plank and also form wearing and guiding Figure 3 is a horizontal section on the line the outer springs.

arms for the end of the bolster 8, the bolster being provided with vertical stop shoulders 9 which, by contact with the wings 7, prevent excessive endwise movement of the bolster. Covering the upper ends of the springs is a cap 10 which is provided on its under side with studs 11 and depending end flanges 12 to center the springs and retain them in place, and this cap 'has its end portions fitting between the wings 7 while its central portion is formed with extensions 13 to fit within the columns. In the upper surface of the cap are concave pockets or seats 14: and in the under side of the bolster are similar matingpockets 15 receiving lateral-motion rollers 16, the cap being formed with flanges 17 at the ends of the, several pockets to retain the rollers therein. The bolster is provided on its under side with depending side flanges 18 which cooperate with the flanges 17 to retain the inner and outer rollers in place but are notched to accommodate the ends of the central roller, this roller extending over the extensions 13 of the cap.

The inner and outer rollers are as long as the space available between the wings 7 but the middle roller is considerably longer and extends into the columns, thereby providing a maximum combined supporting length of rollers and adding depth of support to that portion of the spring group within the walls of the columns. Of course, any number of rollers may he used but there should always be one roller suhiciently long to project over the extensions of the cap and provide additional stiffness and support for that portion of the spring cap taking the load of In assembling, the spring cap may be placed in the side frame before any of the springs are placed therein and the rollers then placed in position on the. cap, the parts then being raised or held in position so that the frame can he moved sidewise over the ends of the spring plank and the bolster. '95 The springs (5 may he put on the spring plank before the side frame is moved into position, but the springs 6 cannot be set in place'until after the cap and rollers are in position.- After the side frame is in position, the outer 100 5 rings 6 may be set, whereupon the spring p ank may be lowered until it rests on the side frame. This operation is very simple, provided there is sufiicient clearance below the compression member 1 to permitthe bolster to be raised so that it will clearthe studs and flan es on the s rin ca as well'as the projections and thecapand bolster which define the roller bearing surfaces. \Vher the clearance is too restricted, I provide/an opening 19 in each column? through either of which atter the bolster is raised, the middle roller may be withdrawn into the open space between the compression and tension members of the side frame at the outer side of the column, the roller, of course, be ing lifted over the retaining flange on the cap.

It will be noted that the cap constitutes a bearing plate for the several rollers and that the inner and outer rollers are disposed be tween the bolster hearing arms or wings 7 while the central roller extends within the columns.

Having fully described in ention what I claim as new and desire to'secure by Letters Patent, is I In a car truck, a side frame having a compression member, a tension member, and columns connecting said members, a spring plank resting on the tension member between the columns, a group of springs resting in part on the spring plank and in part upon the tension member within the columns, a spring cap overlying the group of springs and having portions engaging within the columns, a bolster, and rollers between the cap and the bolster, one of the rollers extending beyond the sides of the bolster over the extensions of the spring cap and within the columns.

2. In a car truck, a side frame having a compression member, a tension member, and columns connecting said members, a spring plank resting on the tension member between the columns, a group of springs resting in part on the spring plank and in part upon the tension member within the columns, a spring cap overlying the'group of springs and having portions engaging within the columns. a bolster, and rollers between the cap and the bolster, one of the rollers extending beyond the sides of the bolster over the extensions of the spring cap and within the columns, the

-cap and the bolster having roller-retaining 55 fl a side frame having a a tension member, andumns having lateral bolster bearing arms. a. I

spring plank resting on the tension member between the columns, a group of springs resting partly on the spring plank and partly on the tension member within the columns, a spring cap overlying the group of springs and aving end portions disposed between the bolster bearing arms and central portions engaging within the columiis, a bolster. and rollers between the cap and the bolster. there being inner and outer rollers disposed between the corresponding bolster bea ring arms and another roller extending beyond the sides of the bolster and within the columns.

In a car truck, the combination with a bolster and springs,"--the upper ends of the springs being all in one plane. of a can resting on the springs, rollers carried by said cap and directly supporting the bolster. an intermediate one of said rollers extending the full width of and beyond the sides of the bolster.

In a car truck. the combination with a side frame having columns defining a bolster opening, a bolster entering such opening, and springs, of a cap resting on and overlying said springs and having portions engaging within the columns, rollers carried by said cap and supporting the bolster. one of the rollers extending beyond the sides of the olster over the extensions of the cap and within the columns.

In a car truck. the combination with the two side frames and the bolster, of two groups of morethan four coiled springs supported upon said frames under the ends of said bolstcr, each of which groups has its springs symmetrically arranged about a common center, and two sets of lateral motion devices, one set between each of said groups of springs and the said bolster. and which sets of lateral motion devices each comprise three rollers and a combined spring cap and three roller bearing plate supported by the underlying group of springs with the central member of said rollers and the seat for the same in said plate centrally disposed in respect to the center line of the load strain on said groups of springs.

In testimony whereof, I-have signed this specification.

. SAMUEL P. BUSH.

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