US2217246A

US2217246A - Railway truck

Info

Publication number: US2217246A
Application number: US199011A
Authority: US
Inventors: Donald S Barrows
Original assignee: Symington Gould Co
Current assignee: Symington Gould Co
Priority date: 1935-09-20
Filing date: 1938-03-30
Publication date: 1940-10-08
Anticipated expiration: 1957-10-08

Description

0d. 8, 1940. D, s BARROWS 2,217,246

RAILWAY TRUCK I Original Filed Sept. 20, 1935 2 Sheets-Sheet l Oct. 8, 1940. D. s. BARROWS 2,217,246

RAILWAY TRUCK Original Filed Sept. 20, 1935 2 Sheets-Sheet 2 307a la 15: Bar 0 06 Patented Oct. 8, 1940 UNITED STATES RAILWAY TRUCK 7 Donald S. Barrows-Rochester, N. Y., assignor to The Symington-Gould Corporation, Rochester, N. Y., a corporation of Maryland Original application September 20, 1935, Serial No. 41,489, now Patent No. 2,139,434, dated December 6, 1938. Divided and this application March 30, 1938, Serial No. 199,011 I 12 Claims.

This invention has been divided from my of nests of bolster springs with respect to the associated side frames while said nests are assembled as units between associated spring plates.

Another object of the instant invention is to provide a railway truck of relatively short wheel base using bolster spring groups generally of modified H-shape in plan to obtain increased spring capacity while avoiding interference between the springs and associated brake rigging.

A further object of the invention is to provide a railway truck with the associated parts so constructed that interference between the inside hung brake beams and the inner bolster spring support is avoided by decreasing the longitudinal dimension of the inner line of springs.

' An additional object of the invention is the arrangement of spring nests and the construction of the plates for said nests, whereby said nests may be applied to and removed from the associated side frame as units. Other objects and advantages of the invention relating to the particular arrangement and construction. of the various parts will become apparrent from the following description.

Referring now to the drawings which illustrate exemplary forms of the invention:

Figure l is a fragmentary side elevation of a railway truck embodying a form of the present invention, portions of the side frame, bolster, spring nest and spring plate being shown in vertical section to more clearly illustrate the inven- .tion.

Figure 2 is a partial fragmentary plan and partial fragmentary horizontal sectional View of the railway truck disclosed by Figure 1, the sectional portion being taken along the lines 2--2 of Figure 1 looking in the direction of the arrows. Figure 3 is a horizontal sectional view taken through the bolster guiding portions of the col- .umns, otherwise corresponding approximately with the right=hand portion of Figure 2 but showing another embodiment of the invention.

Figure 4 is a fragmentary sectional view taken along the lines 4-4 of Figure 3 and looking in the direction of the-arrows. :1

Figure 5' is a planjview of another nest of springs embodying the present invention, a portion thereof being shown in horizontal section and the upper spring plates being removed so as to more clearly'illustrate the invention. -;m

Figure 6 is a side elevational view of the spring nest disclosed by Figure 5 with the right-hand rearspring unit removed.

Referring now to the drawings in detail, like, parts being designated by like reference charac- .15 ters, and first considering the embodiment of the invention illustrated in Figures 1 and. 2, there is shown a portion of a railway truck having laterally spaced side frames l only the intermediate portion of one of which is illustrated. Each side 420 frame l desirably comprises a compression member 2 a'tension member 3 and bolster guide columns or strut portions' l the latter of which space intermediate portions of the'compression and tension members to leave a bolster or window 25 opening 5 therebetween. The compression and tension members extend outwardly beyond the guide columns 4 where they merge adjacent each end of the side frame with one another and join with integrally formed journal boxes (not shown) {30 or, in contradistinction thereto, form jaws for removable or separable journal boxes. 1 I p In the present embodiment of the invention the truck illustrated is one of relatively short wheel base, and in such a structure, as will be $3.5 understood, the brake hanger brackets (not shown) {which extend inwardly of the railway truck from the guide columns, are spaced very close relativeto one another. The tension member 3 between the guide columns is generally {40 box-shaped in cross section and comprises an upper web I 'forming a spring'seat, a lower web 8 spaced vertically from the upper web 1, and laterally spaced vertically disposed side webs or flanges 9 For rigidifying and strengthening the .45 side frame and particularly the tension member and the junction between the tension member and guide columns the tension member is upwardly convoluted or embossed, preferably along the longitudinal center line of the frame adjacent the junctions with the bolster guide columns, to form upper diagonally disposed web portions ll which start or are formed near the center of the spring seat portion and therefrom extend diagonally upward through the guide columns toiio Ward the ends of the side frame. In order to have the reinforcements I I extend from near the center of the spring seat to the guide columns without occupying or closing uptoo much of the clear window opening space, the reinforcements preferably extend to the guide columns-on a moderate inclination, and after intersecting or union with the guide columns they are thence continued upwardly and outwardly at a much" greater inclination to correspond more closely with the relatively steep inclination of the main inclined end portions l2 of the tension-7 member. In this respect the side frames differ somewhat :Trom the construction of the side frame described and claimed in my prior Patent No. 1,652,808 of- December 13, 1927; p

The reinforcing construction heretofore de- 5 scribed results in a bifurcation of the upper web of the tension member, thereby producing a triangular or inclined reinforcement at the junction respectively. These extensions I'l and i8 are desirably braced with respect to the webs 9 by triangular gussets l9 The side frames l are desirably connected together by means of the usual bolster l3 which .has an end portion thereof extending into and occupying the upper area of the bolster 'opening The bolster end is desirably provided with laterally spaced lugs M which extend outwardly from the sides of the bolster and engage or embrace the guide columns l and a lower spring group engaging surface I4".

' In'the present-embodiment the railway truck 'is of the spring-plankless type and is provided with a nest of springs 28*, forming a resilient 'mounting for the bolster end, and is interposed .betweenthe tensionmember; 3e andthe associated end of the bolster. The nest ofsprings 28 .has a lower spring plate which bears :directly on the upper web l of the tension memher. The lower spring plate 25 is desirably upwardly embossed or corrugated, as indicated at 29 to nest over the corrugations or embossments ll on the associated side frame, thereby retaining the spring plate and the associated nest of springs in a desired or predetermined positon. The lower spring plate 25}? has upwardly .extending collars or annular flanges 25 which serve to position or center the associated spring or spring units 28 of the nest. I The nest of springs is also provided with an upper spring plate preferably corresponding :with the lower spring plate 25, and both of said plates are desirably retained in assembled relation by a'normally vertical bolt 42. The head 112' of the bolt is preferably received'in an upwardly embossed portion forming a downwardly opening pocket 43in the lower'spring plate 25*, and the associated nut 44 on the free or upper end ofthe said bolt is received in a correspondingly upwardly opening pocket or downwardly embossed portion 45 formed in the upper spring p a 35 .1 y. f

' In order to provide a nest of "springs with deing surfaces.

sirable stability against rocking of the supported bolster l3 illustrated as of the type described and claimed in my copending application Serial No. 183,209, filed January 3, 1938, while at the same time making it possible to insert and remove the spring nest 28 as a unit after assembly between the upper and lower spring plates, the outer spring units or coils are desirably positioned a normal distance apart whereby they are disposed with their upper portions longitudinally beyond the planes of the bolster guid- The innermost spring units, however, are positioned close enough together so that they clear the bolster guiding surfaces, and the inner portions of the plates 25 and 35 are formed of correspondingly reduced width, as most clearly illustrated in Figure 2, so that the outline V of the springs inwardly of the outermost row thereof is shorter than the distance between the "guide column portions, thereby permitting insertion of the entire nest of springs after assembly with the plates into position with respect tothe associated side frame. The innermost spring units are also closely associated as illustrated and decribed so as to prevent interference between these springs and the inside hung brake beams, the latter of which are not shown.

It has not previously been possible to make.

such an assembly of the entire group of springs when employing a double truss side frame of the type illustrated because the basic group is fundamentally H-shaped'in plan and the window opening below the column faces or bolster guiding portions is too narrow to accommodate springs in position, especially when the plate'is raised to clear the triangular portions ll of the inner truss. By keeping all but the outer row 7 of springs within the distance between the transverse vertical planes of the bolster engaging surfaces of the guide columns the spring group may be raised toclear the inner truss or embossments ll and allow for its. application or removal as a unit.

It will be observed that the nestof springs 28 and the associated upper and lower spring plates 95 and 25 respectively, are formed substantially .orgenerally H-shape in plan, including five springs two of which form the inner upright of the H, and are positioned close enough together so that these springs-and their associated portions of the spring plate may be sufficiently narrow to pass between the bolster guiding surfaces of-the guide columns in order to allow for application and removal of the nest whileassembled with the plates. The springs, two in number, forming the outer upright of the H are positioned far enough apart to provide for the desired nest stability against rocking of the superimposed bolster so that the outer width of the nest is greater than the distance between Referring now to the embodiment of the invention illustrated in Figures 3 and 4, there is shown a fragmentary portion of a side frame I? having a tension member 3 on which is supported a nest of springs 28 As in the preceding embodiment, the nest of springs has a lower spring plate 25 which is upwardly embossed or corrugated, as indicated at 29*, to nest over the corrugations or embossments ll on the tension member 3* of the associated side frame, thereby retaining the nest in a predetermined position on the tension member. The lower spring plate 25 has upwardly extending collars or annular flanges 26 which serve to position or center the associated springs or spring units of the nest. Each spring unit in the present embodiment comprises an outer coil 46 and an inner coil 41 rather than being merely of the single coil type as in the preceding embodiment. It will, however, be understood that the present invention need not be limited to the types of spring units employed in this or other embodiments.

The nest of springs 28 is also desirably provided with an upper spring plate (not shown) preferably corresponding with the lower spring plate 25 said plates being desirably held together by a normally vertical bolt 42* and an associated nut (not shown) substantially the same as in the preceding embodiment. On account of the fact that the present embodiment has seven spring units, rather than five as in the preceding embodiment, only five of the said units are desirably disposed between the main upper and lower spring plates, three of said units being disposed outwardly of the longitudinal central plane of the associated side frame l one unit being disposed with its axis in said plane, and the remaining unit being disposed inwardly of said plane. The spring plates, as in the preceding embodiment, are formed sufliciently narrow inwardly of the outer row of springs so that the associated nest, when assembled with said plates, may be applied to and removed from the associated frame as an assembled unit.

Supplementing the springs 46 and 4'! of the nest of springs 28* are auxiliary spring units 48, each unit desirably comprising an outer coil 48 and an inner coil 50 and having an auxiliary lower plate 5! and an upper reversely formed complementary spring plate (not shown). The main lower spring plate 25 is interlocked with the lower auxiliary spring plates 5! in any desirable manner, for example, by having the

adjacent portions

52 and 53 of each auxiliary spring plate upwardly flanged or directed inwardly of the spring nest, as most clearly illustrated in Figure 4, and received in correspondingly formed

pockets

54 and 55 formed on said main spring plate 25*.

The interlocking or inter-engagement between the upper main and auxiliary spring plates may correspond substantially with that structure disclosed and described for the interlocking between the lower main and auxiliary spring plates as will be understood, said upper and lower main spring plates being desirably interchangeable and of substantially identical construction, and the auxiliary spring plates, being symmetrical about the longitudinal vertical plane of the rear row of springs, are also interchangeable.

In assembling the nest of springs illustrated in Figures 3 and 4 the main nest28 may be assembled with the main upper and lower spring plates and the entire unit secured together by means of the bolt 42* priorto insertion in the window opening 5 of the side frame I. The lower auxiliary spring plates 5! being in place, the nest 28 is elevated sufficiently to clear the tri angular reinforcing portions l of the side frame and then lowered down over the

flanges

52 and 53 of the lower auxiliary spring plates 5! so that the interlock between said flanges and the

pocketed portions

54 and 55 of the lower main spring plate 25 is efiected. After this procedure the auxiliary spring units 48 are applied or positioned over the spring plates 5! around the spring positioning collars 56 thereon, and the top auxiliary plates (not shown) are then positioned over the spring units 48 with their

corresponding flanges

52 and 53 fitting or projecting within the upwardly

opening pockets

54 and 55 of the upper main spring plate- (not shown).

Referring now to the embodiment of the invention illustrated in Figures 5 and 6, there is shown a nest of springs 28 adapted to be em ployed like the nests 28 and 28 of the preceding embodiments, except that it involves an elliptic or banded leaf spring 51 in addition to the helical springs or spring units 58. Although the associated side frame is not illustrated, it will be clearly understood that the spring nest may be employed with the side frame like the nest of the springs 28 and 28 As in the preceding embodiment, the nest 28 comprises main lower and upper spring plates 25 and 35 desirably held together by a pair of normally vertical bolts 42, the head of each bolt being preferably received in an upwardly or inwardly embossed portion forming a downwardly opening pocket 43 in the lower main spring plate 25, and the associated nut 44 on the upper or free end of each bolt being received in correspondingly upwardly opening pocket 45, the latter of which is formed by downwardly embossing the main upper spring plate 35.

These main plates 25 and 35, when secured together by the bolts 42, secure the two outer helical spring units and the intermediate elliptic spring in assembled relation so that the nest 28 may be handled as a unit for application and re-. moval with respect to an associated side frame (not shown). As in each of the preceding embodiments, each spring plate 25 and 35 desirably has cylindrical spring positioning collars. 26 for the helical or coil springs and, in addition thereto, has a generally rectangular spring posisides 6! are desirably joined by relatively high side or flange portions 62 which extend upwardly along the edges of the leaves and embrace those portions of the bands 69 laterally of the leaves.

Supplementing the springs of the nest of springs 28 are auxiliary spring units 48, each unit in the present embodiment comprising a single coil, although double coils may be employed-if desired, as in the preceding embodiment, not only for the auxiliary helical springs but also for the main helical springs. associated therewith a lower auxiliary spring plate 5i and an upper spring plate 33, said upper and lower spring plates being desirably formed identical so that they may be interchanged. The lowermost spring plate 25 is interlocked with the lower auxiliary spring plate 5! in any desired manner, for example, by having the

adjacent portions

52 and 53 of said auxiliary spring plate upwardly flanged, as illustrated, and received in or extending into correspondingly formed

pockets

54 and 55 on said main plate 25. The interlocking between the upper main and auxiliary spring plates may correspond substantially with that between the lower main and auxiliary spring plates, as will be understood. In assembling the nest of springs illustrated in Figures 5 and 6, the main nest 23 or the elliptic spring 5'! and the springs or spring units 58 may be assembled with the main upper and lower The spring units 48 have spring plates and the entire unit secured together by the bolts 42 prior to insertion of the unit in the Window opening of an associated side frame '(not shown). The lower auxiliary spring plate 5l,--'being previously set in place on a tension member of a side frame, the assembled nest 28 is then inserted in a manner similar to the nest 28 of the preceding embodiment, that is, it may be'elevated if'necessary to clear triangular reinforcing portions in the window of a side frame iffemployed with that particular type of side frame, and in any event raised sufficiently to clear the

flange portions

52 and 53 on the auxiliary plate The assembled nest is then lowered down over said flanges so as to effect the desired interlock between the main and auxiliary plates, said flange portions being received or positioned in the pockets 5 and 55 provided in the main spring plate.

The main spring plates c and are shown with flat outer or frame and bolster engaging surfaces adapting them for employment with the conventional type of frame without triangular reinforcing portions like those designated by the reference character H in Figures 1 and 2. If employed with a frame of the double truss type, "suchas described and claimed in my Patent No. 1,652,808 previously referred to, with such triangular reinforcing portions, it will be found desirable to have the plates corrugated like those of the preceding embodiments in order to nest with the reinforcements and thereby form means to' retain the assembled unit in a predetermined position within the window opening of an asso-' ciated side frame. After this procedure the auxiliary spring units 48 are applied over the springplates5l and around the spring positioning col- ,lars 56 thereon and the top auxiliary spring plate 63 positioned over the spring units 48 with its corresponding flanges 64 fitting within or extending'into upwardly opening pockets 65 of the upper main spring plate 35.

' It will be understood that although I have shown'only one side frame and the associated end of the bolster, the truck, as is usual, is formed with two side frames which are connected by means of the usual bolster or load-carrying member.

I .claim:

1. In arailway truck, in combination, a side frame comprising compression and tension mem; bers spaced at intermediate portions by bolster guide columns leaving awindow opening there between, that portionof the tension member beneath said window opening being adapted to support a spring plate, and a nest of springs compris ing upper and lower spring plates supported on said tension member, each spring plate having its outer end relatively wide to accommodate springs spaced apart such a distance that when assembled they will provide the nest with the desired sta bility against rocking of a supported bolster, which distance gives the nest an outer width greater than that between guide surfaces of said columns, and decreased in width toward its inner end to a distance less than that between said guide surfaces, whereby said nest of springs may be assembled with its plates and then inserted or removed as a unit.

2. In combination, a bolster with its ends formed with lower spring engaging surfaces, nests of springs with spring plates disposed in engagement with said surfaces, said plates beingsufficiently wide at their outer ends so that the outer springs of the nests may be positioned far enough apart to provide the nest with the desired stability against rocking of said bolster, and thu's'wider at said outer ends than the distance between the bolster guiding surfaces of associated side frames, and decreasing in width at the portions normally received in said side frame bolster openings in order to provide for application and removal of said nests of springsxwhile said springs are assembled therewith.

3. A nest of at least five bolster spring units provided with associated spring plates for holding said units assembled, said plates being of maximum width at their outer ends, so that the outer spring units may be positioned far enough apart to provide the nest 'with the desired stability against rocking of an associated bolster and thus so far apart that the outer dimensions thereof are greater than the distance between the bolster guiding surfaces of an associated side frame,'said plates being of lesser width inwardly therefrom to make application and removal with respect to said side frame possible while the spring units are assembled with respect thereto.

4. In a railway truck, in combination, a side frame comprising a compression member, a tension member, bolster guide columns spacing intermediate portions of said members and spaced to leave a bolster opening therebetween, that portion of the tension member beneath said bolster opening having embossments extending from the lower ends of the bolster guide columns toward the central portion thereof, a springplate sup.- ported on said tension member and formed of corrugations interlocking with said embossrnents, a

' sired stability against rocking of a supported bolster, which distance gives the nest an outer width greater than that between the guiding portions of the columns, and an upper plate of'corresponding form disposed on top of said nest of springs and adapted tobe engaged by the supported bolster.

5. A nest of at least five bolster spring units provided with associated members for holding said units assembled and formed as two rows with a central spring unit positioned directly between the rows, making an arrangement substantially H-shape in plan, the spring units of the outer row being positioned far enough apart to provide the nest with the desired stability against rocking of an, associated bolster, and thus further apart than the distance between the bolster guiding surfaces of an associated side frame, the spring units of the inner row being positioned closer together than those of the outer row so as to be adapted, without disassembly, to pass between said bolster guiding surfaces.

6. A spring plate for a nest of springs generally H-shaped in plan, said plate being provided with at least five spring positioning collars corresponding with the springs on the uprights and the cross piece of said H, the collars for the springs on the inner upright of said H being positioned close enough together so that the width of the plate may be sufiiciently narrow at that point to pass between the bolsterv guiding surfaces of an associated side frame, thereby allowing for application and removal of the nest employing said plate while assembled, the collars for said springs, which are positioned farthest from one another to form the ends of the outer upright of said H, being positioned far enough apart to provide for the desired nest stability against rocking of an associated bolster so that the outer width of the nest is greater than the distance between the bolster guiding surfaces of said associated side frame.

'7. A two-piece spring plate device adapted to engage one end of a nest of springs comprising a main spring plate engaging most of the springs of said nest, and an auxiliary spring plate engaging at least one of the remainder of said springs, one of said plates having an angularly disposed flange directed inwardly of said nest and the other plate having a corresponding pocket normally receiving said flange and holding said plates in proper relation with respect toone another.

8. A two-piece spring plate device adapted to engage a nest of springs comprising a main spring plate engaging some of the springs of the nest, and an auxiliary spring plate engaging at least one of the remainder of the springs, said main spring plate having a pocket facing away from said springs adapted to receive an angularly disposed flange provided on said auxiliary spring plate for holding said plates in proper relationwith respect to one another.

9. A nest of bolster spring units provided with associated spring plates for holding said units assembled, said plates being of maximum width at their outer ends and of lesser width inwardly therefrom to facilitate application and removal with respect to an associated side frame while the spring units are in position with respect thereto, auxiliary springs and associated plates assembled with said nest of springs, and means detachably interlocking said nest plates and auxiliary plates.

10. A nest of bolster spring units provided with associated spring plates, means connecting said plates for holding said nest assembled, said plates being of maximum width at one end. thereof so that the associated springs may be positioned far enough apart to provide the nest with the desired stability against rocking of an associated bolster, and thus so far apart that the outer dimension thereof is greater than the distance between the guiding surfaces of an associated side frame, said plates being of lesser width at the other end thereof to make application and removal with respect to said side frame possible while the spring units are assembled with respect thereto.

11. A nest of bolster spring units provided with associated main spring plates, means connecting said main spring plates for holding said units assembled, said plates being of maximum width at one end thereof so that the associated springs may be positioned to provide the nest with the desired stability against rocking of an associated bolster, and thus so that the over-all dimension thereof is greater than the distance between the guiding surfaces of an associated side frame, said main plates being of lesser width at the other end thereof to make application and removal with respect to said side frame possible while the spring units are assembled with respect thereto, and an auxiliary spring plate engaging at least one other spring unit, said main and auxiliary spring plates having interlocking portions for maintaining the springs in a predetermined position.

12. A multi-part spring plate device adapted to engage a nest of springs comprising a main spring plate engaging some of the springs of said nest, and an auxiliary spring plate engaging at least one of the remainder of said springs, one of said plates having an angularly disposed flange and the other of said plates having a corresponding pocket normally receiving said flange so as to retain said plates in proper relation with respect to one another, "one of said plates also having convoluted portions for interlocking engagement with correspondingly formed portions of an associated side frame for holding said plates in proper relation with respect to the said side frame.

DONALD S. BARROWS.