US1787031A

US1787031A - Car truck

Info

Publication number: US1787031A
Application number: US268511A
Authority: US
Inventors: Franklin L Barber; Edwin W Webb
Original assignee: Standard Car Truck Co
Current assignee: Standard Car Truck Co
Priority date: 1928-04-09
Filing date: 1928-04-09
Publication date: 1930-12-30
Anticipated expiration: 1947-12-30

Description

De 1930. F. L. BARBER ET Al. 1,787,031

CAR TRUCK Filed April 9, 19.28

2 Sheets-Sheet l Dec. 30, 1930.

F. L. BARBER ET AL CAR TRUCK,

Fi1\d April 9, 1928 2 Sheets-Sheet 2 Patented Dec. 3o, 1930 y f J1,787,031

UNITED `siaras.j PA'raNr]oFFlcl?.

FRANKLIN L. BARBER AND EDWIN WEBB, QF CHICAGO, ILLINOIS, ASSIGNORSiTO STANDARD CAR TRUCK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW' JERSEY 'i can TRUCK Application led'April 9, 1928. Serial No. 268,511.

' Within the past few years,-fi,t has become quite common in car truck Construction to employ under the ends of the truck bolster groups of springs symmetrically arranged about a common center. In most instances, groups 0f more than four springs are usually employed with one of these springs at the center of the lgroup and the other spring members symmetrically arranged about the said central spring.v

This invention has for one of its objects to adaptthe-wellknown Barber lateral motion roller bearing devices to groupedsprings of the kind above referred to, in such a way that the central members of the rollers and the seats for the same, in the underlying combined spring cap and rol-ler bearing plate, will be centrally disposed in respect to the center line of the load strain on the groups of-springs.r Other objects of the invention will appear from the herein below stated description and be defined in the claims. To this end, the invention consists of the novel devices and combinations of devices hereinafter described and pointed out in the claims.

In the accompanying drawings, Fig. 1 is a.l view in sidegelevation showing one of the side frames of a car truck and the end of the bolster supported by grouped springs from the side frame and having our invention embodied therein, some parts being shown in diagram only;

Fig. 2 is aview chiefly in vertical cross section on the line 2--2 `of Fig. 1, with 'the bolster shown in elevation and with portions broken away therefrom;

jFig. 3 is a View chiefly in plan but partly in section on the line 3-3 of F igs. 1 and 2;

Fig. 4 is a view chiefly in plan but partly in section on the line lf- 4 of Figs. 1 and 2.;

Fig. 5 is a View showing the underside of one end of the bolster in plan and the columns in section Fig. 6 isa perspective view of the combined spring cap and roller'seat detached, and

f Fig. 7 is a view similar to Fig. 3, but illustrating a modification in the grouping of the springs and a modification in the construction of the combined spring cap and roller bearing plate for adaptation to the use of rollers all of equal length.

vThe side frame 8 shown is a cast metal or pressed steel frame of a well known standard type and is provided with channel shaped columns 9 suitably spaced apart from each other. The numeral 10 represents the cross tie, shown as a channel form, and which is rigidly secured at its opposite ends to the side frame. This cross tie 10 is of suitable form for serving as a spring plank; and on the end portions thereof are located groups of seven springs 11 with one at the exact center of the group and the Aothers symmetrically arranged about the central member. In the grouping shown in the main views, three of the seven springs are located in line with each other lengthwise of the truck; and, of the other four, two are disposed equidistant on opposite sides of the three before named and in line with each other lengthwise of the truck. The numeral 12 represents a combined spring cap and roller bearing plate, which rests on the top of the group of springs, and is provided at its opposite ends with projecting lugs 12a which engage with the bolster columns 9, with freedom for up and down motion lengthwise of said columns as guides. The upper surface or face of this plate 12 is provided with three roller seats marked respectively 12b and 120, of which the central member 12b is longer than either of the other two 120 which are of equal length. It is also important to note that the central roller seat 12?) is so positioned on the plate 12 that when the parts are in working position, it stands directly over the central line of the three springs of the group alined with each other lengthwise of the frame; and that the other two roller bearing seats 120 are so located that when the parts are in working position they stand directly over the center 'line of the sets of two springs which are alined with each other lengthwise of the truck. In the said seats 12b and 120 are located three'corresponding rollers, the

central member of whichis marked with the either of the two members 14, corresponding in these respects to the seats for the saine in the -plate 12.

-The numeral represents the truck bolster, which is preferably made of cast steel. The end portions of this bolster are provided with bearing surfaces 15a adapted to rest on the

underlying rollers

13 and 14. The cohtours of the roller bearing seats within the plate 12 are preferably like those shown' in the E. VV. Webb Patent 1,137,038, of date `the bolster, each tension chord having a flat Apr. 27, 1915, and the contours'jof the bearing surfaces 15a on the under side of the bolsterl may be the same, or simply concave, as'the bolster travels with the rollers. These said roller seats 12b and 120 in the plate 12 are of suiiicient length, measured crosswise thereof, to provide for the needed amount of travel of the rollers with the bolster. To limit this travel, bolster 15 is provided near its ends on its front and back profile faces with laterally projecting lugs 15b which strike against the outer profile faces of the bolster columns, and thereby liniit the lateral travel of the bolster under angular motion of the car truck relative to the car body (not shown). ln its upward and down- Ward mot-ion, the bolster is, of course, guided by the bolster columns Q, between which its end portions play.

ln the modification illustrated in Fig. 7, a group of seven springs 16 is employed with three thereof alined with each other crosswise of the truck with one thereof t the exact center of the group; and then of the other vfour springs, two are located ednidistant on the opposite sides of the central spring lengthwise of the truck and alined with each other crosswise of the truc t 'lliat makes a group of springs differing oni the group shown in the main views only i respects above noted, but it enables the use of the combined spring cap and roller seat l?,

wherein the roller seats 17a are all of equal length and, of course, the corresponding rollers used will also be all of the saine length.

ln respect to both groupings of the springs, it is obvious that the design of the lateral motion bearing devices located between `the springs and the ends of the holsters is such that the central members; of the rollers will be centrally disposed in respect to the center line of the load spring on the groups of springs. By reference to the drawings, especially `Figs. l and 4, it will be seenthat the bolster columns connect the two chords and are so spaced apart as to receive between the same the end of the bolster and that the tension chord has a flathorizont-al portion cxtending from the base of one column to the base of the other column and reinforcing webs on opposite sides thereof extending downwardly at an incline from the column to Ithe horizontal portion inwardly of thc columns; and it will also be seen that certain horizontal portion.' extending from the base of one column to the' base of the other and reinforcing webs on opposite sides thereof extending downwardly at an incline from the columns to the 'horizontal portion inwardly of the columns, a group of bolster supporting springs on said horizontal portion,vcertain springs of said group occupying the spaces adjacent the column between said reinforcing webs, a roller seat interposed between the upper ends of said springs` and the bolster, and bearing rollers interposed between the seat and bolster.

2. ln a railway car truck, a bolster, side Vframes each having an upper compression chord, a lower tension chord, and spaced columns connecting the chords and forming between theni an opening to receive an end of the bolster, each tension chord having a flat horizontal portion extending from the base of one column to the base of the other and reinforcing webs on opposite sides 'thereof extending downwardly at an incline from the columns to the horizontal portion i-iwardl of the columns, a group of bolster suppoiV Lirig springs on said horizontal portion, springs of said group occupying the spaces adjacent the column between said reinforcing webs, a bearing plate resting on the tops of said springs and guided between said columns, and roller bearings interposed between the iop said plate and the bottom of the bolster.

3. ln railway car truck, a bolster, side frames each having an upper compression cnord, a lower tension chord, spaced coiunins connecting the chords and forming between thein an opening to receive an end of the bolster, each tension chord having a horizontal portion extending 'from the of one column to the base of the other reinforeing webs on opposite sides thereof extending downwardly at an incline 'i' the columns tothe horizontal portion wardly of the columns, a group yof bolster supporting` springs onsaid liorizoii-i i tion, certain springs of said group occur y, the spaces adjacent the column between said reinforcing webs,a rollerseat resting on the tops of said springs and guided between coluinnsfand vbearing rollers extending stantially the full width of thebolster and interposed between the bolster and seat.

4. ln a railway cartruck, a side frame han ing a compression chord, a tension chord lid provided with a horizontal central portion and inclined end portions joining the compression chord adjacent Athe ends thereof, spaced upright columns joining the tension chord at opposite ends of the horizontal portion thereof to the compression chord, reinforcing webs on opposite sides of the side frame integral with the columns and horizontal portion of the tension chord, and extending upwardly at an incline from the horizontal portion to said columns, a bolster having end portions of a width to lit between said columns and having side faces extending substantially the full depth of the bolster' and bearing on said columns, a group of bolster' supporting springs on said horizontal portion, end springs of said group being positioned between said reinforcing webs, a roller.

seat resting upon the tops of said springs and covering the-entire group of springs, and bearing rollers interposed between said seat and the bottom of the bolster.

ln a. railway car truck, a bolster, side frames each having an upper compression chord, a lower tension chord, and spaced columns connecting the chords and'forming between them an opening-to receive an end of the bolster', each tension c hord having a Hat horziontal portion extending from the base of one column to the base of the other and reinforcing webs on opposite sides thereof extending downwardly at an incline from the columns to the horizontal portion inwardly of the columns, a group of bolster supporting springs on said horizontal portion, certain sin-ings of said group occupying the spaces adjacent the column between said reinforcing webs, a bearing plate resting upon the tops of said springs and covering the entire group of springs, and a roller bearing extending substantially the full width of the bolster and interposed between said bolster and plate.

(i. In a railway car truck, a bolster, side frames each having an upper compression chord. a lower tension chord, and spaced columns connecting the chords and forming between them an opening toreccive an end of the bolster, each tension chord having a flat horizontal portion extending from the base of one column to the base of the other' and reinforcing webs on opposite sides thereof eX- tending downwardly at an incline from the columns to the horizontal portion inwardly ofthe columns, a group of bolster supporting springs on said horizontal portion, certain springs of said group occupying the spaces adjacent the column between said reinforcing webs, a bearing plate resting upon the tops of said springs and covering the entire group of springs, a bearing roller between the top of said plate and the bottom of the bolster centrally over said group of springs and eX- tending substantially the full width of the bolster, and additional bearing rollers between the plate and bolster on opposite sides of said firstmentioned roller.

7. In -a railway car truck, a bolster, side frames each having an upper compression chord, a lower' tension chord, and spaced columns connecting the chords and forming between them an opening to receive an end of the bolster, each tension chord having a flat horizontal portion extending from the base of one column to the base of the other and reinforcing webs on opposite sides thereof eX- tending downwardly at an incline from the columns to the horizontal portion inwardly of the columns, a group of bolster supporting springs on said horizontal portion, certain springs of said group occupying the spaces adjacent the column between said reinforcing webs, a bearing plate guided for vertical movement in said opening and resting on the tops of said springs, said plate having grooves on the top face thereof parallel with and beneath the grooves on the under face of the bolster, and bearing rollers mounted in the grooves of the bolster and plate.

8. ln a railway car truck, a side frame having a bolster receiving opening and guide columns atvopposite sides of the opening, said frame having aflat horizontal spring supporting portion at the bottom of the opening extending from one column to the other and projecting laterally from opposite sides of the frame and reinforcing webs on opposite sides of said spring supporting portion extending upwardly therefrom to said columns, a bolster having side faces bearing on said columns, a group of bolster supporting springs arranged with a central row of springs centrally of the frame between the columns and other rows of springs on opposite sides of said central row, the end springs of the central row being positioned in the spaces between said reinforcing webs, a roller seat resting on the tops of said springs, and a bearing roller interposed between the seat and the bottom of the bolster over each row of springs, each roller extending substantially the full length of the row of springs over which it is placed.

In testimony whereof we affix our signatures.

FRANKLIN L. BARBER. EDWN W. WEBB.