US2066602A - Railway truck - Google Patents

Description

Jan. 5, 1937.

D. s. BARRoWs ET Al. 2,066,602 l RAILWAY TRUCK Filed Dec. 50, 1931 3 Sheets-Sheet l INVENTORS ATTORNEY Jan. 5, 1937. v D, s BARRows ET Al. 2,066,602

RAILWAY TRUCK Filed Dec. 30, 1931 l 5 Sheets-Sheet 2 INVENTORS Zyo/ya/anhows BY l6222/727 @ac ATTORNEY Jan. 5, 19;@37. D. s. EAI-Rows Er Al. 2,066,602

RAILWAY TRUCK Filed Dec. so, 1951 3 Sheets-Sheet 3 ATTORNEY INVENTORS flows 30W/da@ Patented Jan. 5, 1937 PATENT 4OFFICE RAILWAY TRUCK Donald S. Barrows and Glenn F. Couch, Rochester, N. Y., assignors to The Symington-Gould Corporation, Rochester, N. Y., a corporation of Maryland Application December 30, 1931, Serial No. 583,950

15 Claims.

This invention relates to railway trucks and,

Another object of our invention is the'provision of a railway truck in which the side frames are adapted for lateral swinging to allow corresponding motion of the associated bolster, the brake hanger brackets being flexibly mounted on the -frames so that they will hang in proper position 15 with respect to the associated wheels regardless of the angularity ofthe frames, orl in which they are mounted on the bolster and interlocked with respect to the frames so that they stay in proper `position with respect to the wheels regardless of the lateral position of the bolster.

A further object of our invention is the provision of a railway truck in which the wheels are quickly changed by lifting the frames to pull the pedestal jaws olf the boxes, or by removing retainingbolts connecting the bolster and frames and lifting the bolster off said frames. 1

A still further object of our invention is the provision of a self-squaring and self-centering railway truck adapted to resiliently support an associated railway vehicle body by springs between the side bearings and. bolster, resilient cushions merely being provided between the bolster bearing castings and the associated side frames, said truck being preferably provided with conical side bearing rollers and having no spring plank or plates.

Other objects and advantages of the inven tion relating to the particular arrangement and construction of the various parts will become apparent as the description proceeds.

Referring to the drawings illustrating our invention, the 1 scope whereof is defined by the appended claims:-

Figure 1 is a fragmentary side elevational view of a railway truck embodying our invention, the journal box and associated parts being shown in section.

Figure 2 is a fragmentary plan of that portion of the truck shown in Figure 1.

y Figure 3 is a fragmentary transverse sectional view on the line 3-3 of Figure l, looking in the direction of the arrows.

Figure 4 is a sectional view of the bolster and associated side bearing on the line 4-4 of Figure 2, looking in the direction of 4the arrows.

Figure 5 is a fragmentary detail showing -one of the brake hangers mounted on the frame, said view being taken on the line 5 5 of Figure 2, looking in the direction of the arrows.

Figure 6 is a sectional view on the line 6-6 of Figure 5, looking in the direction of the arrows.

Figure 7 is a perspective View of the bolster bearing casting.

Figure 8 is a perspective view of the brake hanger block which serves for the flexible mounting of a brake hanger.

Figure 9 is a view corresponding to Figure 6 `with the brake hanger removed.

Figure 10 is a fragmentary view corresponding to Figure 1, but showing a modified form of brake hanger bracket.

Figure 11 is a fragmentary view on the line I I--II of Figure 10,1ooking in the direction of the arrows.

Figure 12 is a partial plan and partial horizontal sectional view on the line |'2-I2 of Figure 10, looking in the direction of the arrows.

Figure 13 isa fragmentary sectional view on the line I3-I3 of Figure 12, looking in the direction of the arrows.

Figure 14 is a perspective view of the brake hanger bearing piece detached from the associated parts.

Referring to the drawings in detail, and rst considering the embodiment of our invention illustrated in Figures 1 to 9, inclusive, there is shown a truck l comprising two pairs of wheels 2 and connecting axles 3, only one pair being illustrated, as the truck is symmetrical. Around each journal 4 of theaxles 3 is a journal box 5 with an associated brass or bearing 6, each journal box preferably having a. pocket 1 in the roof thereof receiving a hardened steel insert 8 having a crowned or cylindrically convex upper surface 9 normally engaged by the corresponding lower surfacelll of a corresponding block il in the corresponding jaw l2 of an associated side frame i3. It is not necessary to describe the mounting of the side frames -i 3 on the journal boxes 5, as such mounting is illustrated and pref' erably corresponds with that described and claimed in the Barrows Patent No. 1,779,526, of October 28, 1930, whereby equalizing of the journal box in the vertical axial planes of the journals is permitted.

The rocking engagement between the bearing blocks 8 and il of the journal boxes 5 and frames I3 not only permits equalization of the boxes, but also allows for swinging of the frames on said boxes, whereby the lower or tension members .M

of said frames are adapted to move laterally when such swinging takes place. Each frame is desirably also provided with a compression member I5 and bolster guide columns I6 spacing intermediate portions of said compression and tension members, leaving a window or bolster opening I1 therebetween.

The associated bolster I 8 is desirably supported from the frames I3 by resting at each end, on a bolster bearing casting I9 which, in turn, rests on a resilient or rubber pad 20 supported on the tension member I4 beneath the window opening I1. Each casting I9 desirably has anges which straddle the tension member .I4 of the corresponding frame. The frames I3 of the present embodiment are preferably of the double truss type, such as shown in the Barrows Patent No. 1,652,808 of December 13, 1927, so the pads 20 and bearing blocks or adapter castings I9 are formed to clear the reinforcing or double truss portions 2I of the frames.

The upper surfaces. of the bearing castings I9 and the engaging surfaces of the holster I9 are formed so that rocking therebetween is permitted without gouging. In the present embodiment, the upper surfaces of the castings I9 are formed generally convex, each with a flattened central portion, and the corresponding surfaces of the bolster are formed generally concave with flat-l tened central portions, the curvature, however, being on greater radii so that rocking or rolling therebetween is permitted, the flat central portions serving to cause the bolster to tend to remain in centralposition so that the truck is selfcentering. In order to limit lateral motion of the bolster upon swinging of the frames on the outside articulated journal boxes heretofore described, a retaining member or bolt 22 desirably passes loosely through each end of the bolster and through the guide columns I6 on either side of said bolster.- It will, therefore, be seen that the bolster may move laterally, causing the associated side frames, only one of which is illustrated, to act as swing links as they rock on the journal boxes.

To provide for the adequate resilient mounting of the associated railway vehicle or car body bolster 23, the truck bolster I9, adjacent each end, desirably has an upwardly opening pocket 24 formed by downwardly offsetting a portion of the upper wall thereof, receiving a nest of springs 25. Supported on the upper ends of the springs 25 is a spring cap 26 on the upper surface of which,

between upstanding flanges thereon, are mounted side bearing rollers 21, said rollers, in the present embodiment, being preferably ground cones and having toothed portions 28 at their ends engaging corresponding toothed portions 29 on the body side bearing 39 to maintain themin desired position. The surfaces 3I on the 'spring cap 29, and 32 on the side bearing 3l! are desirably concave toward each other, so that the truck is made self-squaring by the raising of the body upon angling of the truck about the center plate 33, the lower end of which interlocks in a. corresponding pocket 34 in the top of. the bolster but does not normally serve to support the car body 23 from said bolster.

Theside frames ofthe present embodiment are preferably provided with brake hanger brackets 35 providing bearings 36 receiving trunnions 31 on brake hanger blocks 98 through which normally extend brake hanger pins 39 which, in turn, flexibly support brake hangers 4I). The purpose of this flexible mounting is to enable the brake hangers 40 at al1 times to hang in proper relation with respect to the associated wheels 2, the trunnions 31 permitting lateral angling of the hangers 40 to compensate for swinging of the frames I3, and the pins 39 permitting longitudinal angling of said hangers, whereby provision is made for universal movement thereof. The trunnions 31 are desirably flattened at the sides, as indicated at 4I, to permit insertion in the bearings 36 through the channels 42 which communicate with said bearings, said trunnions being, when in normal position, prevented from displacement from the bearings, as will be understood, particular reference being had to Figure 6.

Referring now to theA embodiment of our invention illustrated in Figures 10 to 14, inclusive, a construction is there disclosed which corresponds generally with that of the preceding embodiment, except that the brake hanger brackets 35rt are mounted on the bolster I8, said brackets having housing portions 43 normally receiving generally cylindrical bearing pieces 44 slotted, as indicated at 45, to receive the upper apertured ends 46 of the brake hangers 40, said brake hangers being connected to the'bearing pieces 44 by pins 39a. The slots 41 in the housing portion 43 -receiving the ends of the brake hangers 4I!"L are desirably widened, as compared with the slots 45, so that the bearing piece in each housing 43 is movable longitudinally of the bolster. Such longitudinal movement relative to the bolster is provided by an extension 48 notched, as indi- -cated at 49, to engage a flange or lug 50 on the corresponding guide column I6, so that even though the bolster I 8a moves laterally the bearing piece 44 and the associated brake hanger stays the proper distance from the associated frame I3a so as to be properly disposed withl respect to the associated wheel (not shown). A retainer 5I desirably serves to prevent loss or undesired removal of the pin 39. It will, therefore, be seen that although the features of the present embodiment not shown correspond with the previous embodiment whereby the side frames I3"l serve as swing links for yallowing lateral movement of the bolster, such lateral movement does not interfere with the proper relation between the brake hangers 40* and the associated wheels (not shown). A

In view of the foregoing, it will be seen that We have provided a truck in which the side frames themselves function as swing links for allowing lateral motion of the bolster. To permit the necessary freedom of motion, we have incorporated the outside articulated journal box already the subject of the Barrows Patent No. 1,779,526 of October 28, 1930, using conical roller side bearings and truck springs between the side bearings and bolster instead of between the bolster and side frame. The brake hanger brackets are either mounted for universal movement with respect to the swingable side frames or are mounted from the bolster with provision for relative lateral movement therebetween, whereby the proper relationship of the brake hangers and the wheels is maintained. f

Although preferred embodiments of ourinvention have been disclosed, it will be understood that modifications may be made within the spirit and scope of the appended claims, and that V'the terms employed are used as those of description and not of limitation.

We claim:-

1. In a railway truck, combination, wheeln a tension memberv and bolster 2,066,602 .supported journal boxes, side frames swingably frames rockably supported from said boxes, said frames having tension members supporting said bolster on means, disposed in straddling relation therewith, presenting convex upper surfaces, and serving as swing links for allowing lateral motion of the bolster.

3. In a railway truck, in combination, side frames having jaws at each end, journal boxes embraced by said jaws, and means permitting rocking motion between said boxes and jaws for allowing lateral swinging of said frames, ya bolster supporting member mounted on each frame, and a bolster directly supported by said members, the supported surfaces of the bolster providing clearance with respect to the corresponding supporting surfaces on the members and at leastone of each pair of cooperating surfaces being curved to allow for rolling action therebetween, so that said bolster is adapted to freely angle vertically with respect-to the frames for permitting lateral motion thereof,

4. In a railway truck, in combination, side frames swingably mounted to allow lateral motion of an associated bolster, blocks pivotally v mounted and supported by said frames, pins extending through said blocks transverse to the axis of mounting, and brake hangers pivotally mounted on said pinsso that they can hang in proper position with respect to associated wheels regardless of the swinging o f the frames.

5. In a railway truck, in combination, wheelsupported journal boxes, side frames flexibly mounted thereon, a bolster exibly supported by said frames and adapted for lateral movement, brake hanger brackets mounted on said bolster, brake hangers supported from said brackets, and means interlocking said brake hangers with respect to` said frames to limit lateral movement thereof.

6. In a railway truck, in combination, side frames each comprising a compression member, guide columns spacin-g intermediate portions thereof, leaving a window opening therebetween, a resilient pad supported on each frame tension member beneath the window opening, a bolster bearing casting mounted on earch pad and straddling portions of the frame therebeneath, a bolster with its ends resting on said castings, one set of engaging bearing-casting-bolster surfaces being generally convex to allow for rocking therebetween without gouging, and means for retaining said bolster assembled with respect to said frames.

7. In a railway truck, in combination, wheel supported journal boxes, side frames swingably mounted on said boxes, a bolster with its ends supported by said frames, on means having a rolling relation with respect thereto, and laterally movable as the frames swing, and brake hangers flexibly mounted on said frames so that 'they can hang in proper position with respect to associated wheels regardless of the swinging of the trames.

t. In a railway truck, in combination, wheel supported journal boxes, side frames flexibly mounted thereon, a bolster exibly supported by said frames whereby it is adapted for lateral movement with respect to the truck, said bolster having brackets thereon, bearing pieces mounted in said brackets for rotative and axial movement, brake hangers supported by said bearing pieces, and means connecting said bearing pieces with the corresponding frames so that they move with the frames and remain in proper position with respect thereto.

9. In a railway truck, in combination, side frames each comprising a compression member,

a tension member, and bolster guide columns spacing intermediate portions thereof leaving a window opening therebetween, each side frame comprising diagonal portions cutting across the lower corners of the window opening, an adapter mounted above the tension member cf each frame and notched to receive said diagonal portions, resilient means disposed between each tension member and its adapter, and a bolster with its ends resting directly on said adapters.

10. In a railway truck, in combination, side frames each comprising a tension member, a re- Y silient pad supported on each tension member, a

bolster bearing member mounted on each pad and having portions depending on both sides of said tension member for holding said bearing member in place, and a bolster with its ends resting on said members.

. 11. In .a railway truck, in combination, side frames, a rubber pad mounted on each frame, a member overlying each pad and interlocked with respect to the associated frame, a bolster with its ends rockably engaging said members and formed with upwardly opening pockets, resilient means supported by said bolster and disposed in said pockets, caps with upper walls supported by said resilient means, and depending flanges telescoping in said pockets around said springs.

12. In a railway truck, in combination, side frames, each comprising a compression member, a tension member, struts spacing intermediate portions of said members, and spaced to leave a window opening therebetween, each tension member having diagonal reinforcing portions cutting across the lower corners of the window opening, a block of rubber mounted on said tension member at the bottom of each window opening, a bolster supporting member resting on each block of rubber and disposed in straddling relation with respect to the associated tension member, and a bolster with its end portions resting on said supporting members. f

13. In a railway truck, in combination, side frames, resilient means resting on said frames, a truck bolster with an upper and a lower wall and having its ends supported by s'aid resilient means and formed with upwardly opening pockets, each pocket being defined by a downwardly offset portion of said upper wall, lying above the lower wall, and connected to the main portion of the upper wall by normally Vertical web portions, coil springs supported by said downwardly offset portions and disposed in said pockets, spring caps with upper walls, the lower surfaces of which are supportingly engaged by said springs, and depending flanges telescoping in said pockets around said springs, and flanges upstanding from the upper surfaces of said walls to position side bearing rollers for the support of an associated body bolster.

i4. In a railway truck, in combination,`side trames, a truck bolster with its ends supported by said frames and formed with a lower wall andan upper wall having portions downwardly odset to provide upwardly openingy pockets, each defined by four normally vertical walls and a normally it aoeaooa s horizontal bottom wall disposed above the bolster lower wall, inwardly of said frames, springs mounted on said bolster in said pockets and clirectly engaging said bottom walls, and spring caps each with an upper wall, the lower surfaces of which are at and engage said springs and the upper surfaces of which are concave for engaging side bearing rollers for the support of an associated body bolster, said capsbeing formed with upstanding anges for positioning said rollers, and four normally vertical walls depending from each of said upper walls, telescoping within said first-mentioned walls, and closing said pockets.

rand hold them with their axes vertical for supporting an associated railway vehicle body, said bottom wall having laterally spaced upstanding lugs for centering said springs.

DONALD S. BARROWS. GLENN F. COUCH.

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