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Publication numberUS2853958 A
Publication typeGrant
Publication dateSep 30, 1958
Filing dateJan 20, 1955
Priority dateJan 20, 1955
Publication numberUS 2853958 A, US 2853958A, US-A-2853958, US2853958 A, US2853958A
InventorsNeumann Otto W
Original AssigneeAmerican Steel Foundries
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Snubbed truck
US 2853958 A
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Description  (OCR text may contain errors)

Sept. 30, 1958 o. w. NEUMANN SNUBBED TRUCK 2 Sheets-Sheet 1 Filed Jan. 20, 1955 NVENTOR. @zi/0V W Q/Zeamyz/ Sept 30, 1958 O. w. NEUMANN 2,853,958

SNUBBED TRUCK Filed Jan. 20, 1955 2 Sheets-Sheet-2 United States Patent* SNUBBED TRUCK Otto W. Neumann, Chicago, Ill., assignor to American Steel Foundries, Chicago, Ill., a corporation of New Jersey Application `lanuary 20, 1955, Serial No. 482,955

13 Claims. (Cl. 10S-197) My invention relates to railway car trucks, and more particularly to a type of truck wherein snubbing means are mounted in each end of the bolster for cooperation with friction plates or panels on the adjacent side frame columns.

A general object of the invention is the provision of a snubbing arrangement wherein the device is operative to resist the lateral, as well as the vertical, motion of the bolster, relative to the side frames of a railway car truck.

A more specific object of the invention is the provision of a snubbed truck in which a pair, of spaced friction shoes are positioned in pockets at the ends of the bolster in angular relationship to each other and to the longitudinal axis of the bolster.

Another specific object of the invention is the provision of a railway car truck in which the side frame columns offer vertical friction vsurfaces disposed in converging planes.

These and other objects of the invention will become apparent from anexamination of the following description and drawings, wherein:

Figure l is a fragmentary side elevational view of a railway car truck embodying the invention,

Figure 2 is a partial sectional view taken in the transverse vertical plane indicated by the line 2-2 of Figure 1,

Figure 3 is a fragmentary top plan View, partially in section, of the structure illustrated in Figure 2 being taken in the horizontal plane indicated by the line 3-3 of Figure 2, and

Figure 4 is a vertical sectional view of the shoe pocket taken along the longitudinal axis of the bolster indicated by the line 4 4 of Figure 3.

Describing the invention in detail, it will noted that the truck comprises a side frame indicated generally at6, having compression and tension members 8 and 10, respectively, which are spaced from each other centrally of the frame and have their ends merged. Vertical columns 12 and 14 connect the tension and compression members, intermediate the ends of the frame, and are horizontally spaced from each other to define a bolster opening 16 therebetween. The tension member 10 is provided with upwardly extending flanges 18 which surround spring seat 20 in opening 16.

The inward edges of the vertical columns are V-shaped and .have corresponding inboard and outboard sides 22 and 24, respectively, which converge to form points 26 opposite each other in the opening 16. Sides 24 are disposed in inbo-ardly converging Vertical planes, and sides 22 are disposed in outboardly converging vertical planes.

The respective planes of each column intersect at the` longitudinal axis of the bolster which is indicated by line A-A and are angularly related to the longitudinal axis of the side frame which is indicated by line B-B. Columns 12 and 14 may be provided with V-shaped wear plates 27 welded thereto as .at 28 and which provide friction surfaces 30 parallel to and corresponding with the outer surfaces ofwalls 22 and 24 respectively. A

A plurality of coil load support springs indicated diay 2 grammatically at 34 may be positioned on the-spring seat 20 of the tension member in the opening 16 between the columns. Flanges 18 serve to retain the coil spring in position. The springs afford resilient support for a bolster indicated generally at 36 which extends transversely of the truck. The bolster comprises spaced top and bottom,

walls 38 and 40, respectively, which are interconnected by spaced side walls 42 and 44, respectively. Each end of the bolster is provided with a box section indicated generally at 46, which comprises spaced top and bottom walls 48 and 50. Only one end of the Vbolster and one side frame are shown as both sides of the .truck are symmetrical. The lower surface 42 rides on the load springs 34.

The box section 46 may be provided with a pluralityVVV of pockets 54 spaced from each other in'angular rela? 4 tionship to each other and to the longitudinal axis of the I bolster; each of the pockets may be normal to and adfjacent one of the surfaces 30 of the columns.`

The pockets are each defined by inboard and outboardr the walls are preferably. f offset inwardly at 57 and 59, respectively, to define ak narrow inner portion of the pocket. rlfhe portions 57and l side walls 56 and 58, respectively,

59 merge with the rear wall 60 which is formed integrally with the top and bottom walls 48 and 50. Also formed integrally with each of the walls 4S and '50` is an interrupted oblique wall 62 having spaced substantially coplanar wedge surfaces 64 which slope upwardly towardv I the surface 30 of adjacent plate 27. l

A friction shoe 66 may be positioned in each pocket.

Each shoe is of generallyA cup-like form having front and? 4 of pocket wall 62. The wedge surfaces 84 may be crowned from the top to bottom to permit a rocking movement of the shoe against the associated surfaces 64 to .v

accommodate irregularities in the wear plate. It will be noted that a handle-like portion 86 of the rear wall of the shoe extends upwardly between the spaced wedge surfaces of the pocket. A coil friction spring 90 is positioned in the pocket between a bottom wall'50 of the pocket and the spring seat 78 of shoe wal176. k

In operation, the spring 90 urges the spring shoe upwardly causing a wedge action between surfaces 64 of the pocket and the surfaces 84 of the shoe which forces the shoe friction surface 80 into frictional engagement with the vertical friction surface 30 of the wear plate to v snub or dampen the vertical oscillation of the'bolster.

It will also be apparent, that because the vertical friction surfaces of the column members are disposed in outwardly converging planes, the engagement between the friction shoes and the respective column members also operates to restrict lateral movement outwardly of the bolster.` A similar pair of friction shoes engaging column `members on the side frame on the opposite side of the truck restricts lateral movement of the bolster in the opposite direction. Additionally, the engagement between," the shoes and the column members restricts any movement of the bolster in a direction longitudinal of the truck.Vv

I claim:

1. In a railway car truck, a side frame comprising tension and compression members and column members interconnecting said tension and compression members and defining an opening therebetween, said column mern- E I bers presenting Vertical friction surfaces obliquely related l to the longitudinal axis of the side vframe, a-p1ur`ality of 'i l Patented Sept.l 3Q, T1958!l of bottom'plate 50 `v The front wall 68 pre-` side wallsv 72 and 74 are formed with wing-v, like wedges 82 having on the outer sides thereof wedge surfaces p84 which are engageable with wedge surfaces 64` coil load springs seated on said tension member in said opening, a bolster -member having au end supported by the load springs, and friction means at the end of said bolster adjacent said surfaces to dampen the vertical oscillation of'the bolster member, said friction means comprising vertical rear and side walls and a horizontal wall at the end of said bolster interconnected to form a pocket therebetween adjacent each of said surfaces, the side and horizontal Walls of each pocket being perpendicular to the adjacent surface, spaced wedge walls in said pockets formed integrally with said side walls and presenting wedge surfaces thereon, a friction shoe in each of said pockets, said shoe presentinga vertical friction surface parallel to said first mentioned friction surface and a wedge surface parallel to said tirst mentioned wedge surface, and a coil spring positioned in each of said pockets between the friction shoe and said horizontal Wall to urge said shoe into engagement with the first mentioned friction and wedge surfaces.

2. In a railway car truck, a side frame comprising tension and compression members, columns interconnecting said members and defining an opening therebetween, the sides of the respective columns being adjacent said opening and presenting vertical friction surfaces obliquely related to the longitudinal axis of the frame, a plurality of load supporting springs seated on said tension member in said opening, a bolster extending transversely of the truck and having an end received in said opening and lsupported by said springs, friction means disposed in the end of said bolster adjacent each of said friction surfaces and each comprising a bottom wall perpendicular to said adjacent surface, an inner vertical wall parallel to and spaced from said adjacent surface, and vertical side walls perpendicular to said adjacent surface and interconnecting said bottom and rear walls to form a pocket therebetween, said pocket being open adjacent said adjacent surface, an inclined wall in said pocket presenting wedge surfaces thereon, a friction shoe positioned in said pocket and presenting friction and wedge surfaces thereon parallel to and engageable, respectively, with said first mentioned friction and wedge surfaces, and means in said pocket engaging said shoe to urge its surfaces into engagement with said first mentioned friction and wedge surfaces.

3. In a railway car truck, a side frame comprising a column having a vertical friction surface thereon, the plane of said surface being at an angle with respect to the longitudinal axis of the frame, a bolster resiliently supported by the frame adjacent the column, friction means carried by the bolster and engageable with the surface, said friction means comprising horizontally spaced vertical side walls obliquely related to the longitudinal axis of the bolster and perpendicular to the surface, a horizontal bottom wall perpendicular to the surface, and a vertical end wall connecting said side and bottom walls to define a cavity therebetween, the open end of said cavity being immediately adjacent the surface, a sloping wall in said cavity extending between said side walls and having at least one wedge surface thereon, a friction shoe resiliently positioned in said cavity and having a vertical friction surface thereon and at least one wedge surface thereon, said last mentioned friction and wedge surfaces being parallel to and bearing against the first mentioned friction and wedge surfaces, respectively.

4. In a railway car truck, a side frame comprising a pair yof vertical columns defining an opening therebetween, a bolster extending transversely of the truck and having an end resiliently supported in said opening, said bolster end presenting at opposite sides thereof substantially V-shaped vertical channels therein, vertical surfaces presented by the columns, said surfaces being disposed in the channels of said end and lying in vertical planes that converge outboardly of the longitudinal axis of the side frame at the longitudinal axis of the bolster, said bolster having pockets at each end thereof, wedge means in eachof Asaid pockets, the longitudinal axes of said pockets being normal to the respective vertical friction surfaces and converging inwardly at the longitudinal axis of the bolster, a friction shoe resiliently positioned in each of said pockets, each of said shoes comprising a boxlike member having a vertical friction surface engageable with the first mentioned friction surfaceand a wedge surface engageable with said wedge means.

5. In a railway car truck, a side frame having a pair of spaced vertical friction surfaces lying in planes which converge outboardly of the longitudinal axis of the side frame, a bolster resiliently supported by said frame intermediate said surfaces, said bolster presenting on opposite sides thereof substantially vertical channels in which are disposed the respective surfaces of the side frame, a pair of friction devices on said bolster positioned at an angle with respect to each other, each of said friction devices being associated with, and positioned normal to, one of said surfaces, each of said devices comprising a pocket formed in said bolster and having a wedge surface therein, a friction shoe resiliently positioned in said pocket and having a wedge surface engaging the wedge surface of the pocket and a vertical friction surface engaging said associated friction surface.

6. In a railway car truck, a supporting member, a transverse member supported thereby, a pair of spaced vertical friction surfaces on one of said members disposed in substantially vertical recesses presented by the other member, the planes of said surfaces converging at the longitudinal axis of the transverse member, one of said members having a pair of pockets therein, said pockets having longitudinal axes angularly related to the longitudinal axis of the bolster member, each of said pockets being positioned adjacent one of said surfaces and having wedge means therein, a friction shoe resiliently supported in each of said pockets and comprising a wedge surface engageable with said wedge means, and a friction surface engageable with said adjacent friction surface.

' 7. A railway car truck according to claim 6, wherein the vertical planes defined by said first mentioned friction surfaces converge outboardly of the truck.

8. In a railway car truck, a side frame comprising a column member, a movable member resiliently supported by said frame adjacent said column member, and friction means between said members, each of said means comprising a vertical friction surface onone of said members and disposed Within a substantially vertically extending recess presented by the other member, said surfaces being obliquely related to the longitudinal axis of the movable member, a horizontal wall and spaced diagonally substantially coplanar wedge surfaces on the other of said members, a friction shoe engageable with said friction and wedge surfaces, and spring means positioned between said diagonal surfaces and abutting said shoe and said horizontal wall.

9. In a railway car truck, a side frame comprising compression and tension elements, a pair of spaced column members interconnecting said elements and defining an opening therebetween, resilient means positioned on said tension member in said opening, a bol-ster member extending transversely of the truck and having an end supported by said resilient means in said opening adjacent said column members, each of said column members having a pair of sides converging to form a point in said opening, vertical friction surfaces on corresponding sides of the respective column members, the end of said bolster having pockets therein located adjacent and normal to said surfaces, wedge surfaces in said pockets, and resiliently supported friction shoes in `said pockets having friction and wedge surfaces engaging said first mentioned friction and wedge surfaces, respectively, to dampen the vertical oscillation of the bolster member and to resist the longitudinal and transverse movement of the bolster member with respect to the side frame.

l0. In a bolster for a railway car truck, a box-like end portion having a pocket on each side thereof, the longitudinal axes of the pockets converging inwardly at the longitudinal axis of the bolster, spaced substantially coplanar diagonal friction surfaces in each pocket, and a spring seat in vertical alignment with the space between said surfaces.

11. In a railway car truck, a side member, a movable member resiliently supported thereby and extending transversely thereof, spaced vertical friction surfaces on one of said members disposed to extend in openings presented by the other member, said surfaces being disposed in planes intersecting at the longitudinal axis of the movable member, resilient friction devices in said other member abutting and engaging said vertical friction surfaces to snub vertical oscillation of the movable member relative to the side member and to resist the movement of the movable member relative to the longitudinal and transverse axes of the side member.

12. A railway car truck according to claim 1l, wherein the vertical friction surfaces are on the side member and the friction devices are in the movable member.

13. In a railway car truck, a side frame having a pair of spaced column members defining an opening therebetween, a bolster member extending transversely of the truck and having an end resiliently supported in said opening adjacent saidl column members, each of said column members having a pair of sides converging to form a point in said opening, vertical friction surfaces on corresponding sides of the respective column members, said bolster end having pockets disposed adjacent the respective surfaces, wedge surfaces presented in the pockets, and resiliently supported friction shoes disposed in the pockets and frictionally engageable with the respective pocket wedge surfaces and column friction surfaces.

References Cited in the file of this patent UNITED STATES PATENTS 2,352,595 Bachman July 4, 1944 2,394,872 Pierce Feb. 12, 1946 2,434,838 Cottrell Jan. 20, 1948 2,495,570 Cottrell Ian. 24, 1950 2,597,909 Tack May 27, 1952 2,669,944 Spenner Feb. 23, 1954

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2352595 *Nov 17, 1941Jul 4, 1944American Steel FoundriesCar truck
US2394872 *Jul 19, 1944Feb 12, 1946Pierce Raymond CTruck
US2434838 *Apr 21, 1944Jan 20, 1948American Steel FoundriesCar truck
US2495570 *Jan 12, 1945Jan 24, 1950American Steel FoundriesTruck arrangement
US2597909 *Sep 27, 1947May 27, 1952American Steel FoundriesSnubbed truck
US2669944 *Dec 6, 1950Feb 23, 1954Scullin Steel CoRailway car truck construction
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3330224 *Jan 29, 1965Jul 11, 1967Amsted Ind IncRailway car truck
US3677363 *Jun 22, 1970Jul 18, 1972Henricot Usines Emile SaDamping and control device for a bogie bolster
US5046431 *Aug 31, 1990Sep 10, 1991A. Stucki CompanyRailway truck
US5072673 *Mar 19, 1990Dec 17, 1991Usines Et Acieries De Sambre Et MeuseBogie with a deformable underframe including an oblique faced friction wedge and direct engagement between bolster and side-frame
US5417163 *May 14, 1992May 23, 1995Sambre Et Meuse (Societe Anonyme)Railway bogie with frame having selective deformability
US6895866Aug 1, 2002May 24, 2005National Steel Car LimitedRail road freight car with damped suspension
US7004079Jan 31, 2003Feb 28, 2006National Steel Car LimitedRail road car and truck therefor
US7143700Jul 8, 2004Dec 5, 2006National Steel Car LimitedRail road car truck and fittings therefor
US7255048Aug 1, 2002Aug 14, 2007Forbes James WRail road car truck with rocking sideframe
US7328659Jul 25, 2005Feb 12, 2008National Steel Car LimitedRail road freight car with resilient suspension
US7497169Dec 4, 2006Mar 3, 2009National Steel Car LimitedRail road car truck and fittings therefor
US7571684Sep 11, 2007Aug 11, 2009National Steel Car LimitedRail road freight car with damped suspension
US7603954May 14, 2007Oct 20, 2009National Steel Car LimitedRail road car and truck therefor
US7610862Aug 14, 2007Nov 3, 2009National Steel Car LimitedRail road car truck with rocking sideframe
US7631603Dec 3, 2004Dec 15, 2009National Steel Car LimitedRail road car truck and bolster therefor
US7654204Dec 29, 2008Feb 2, 2010National Steel Car LimitedRail road car truck with bearing adapter and method
US7699008Sep 11, 2007Apr 20, 2010National Steel Car LimitedRail road freight car with damped suspension
US7775163Sep 24, 2007Aug 17, 2010National Steel Car LimitedRail road car and bearing adapter fittings therefor
US7823513Dec 24, 2003Nov 2, 2010National Steel Car LimitedRail road car truck
US7845288Jul 8, 2004Dec 7, 2010National Steel Car LimitedRail road car truck and members thereof
US7946229May 16, 2008May 24, 2011National Steel Car LimitedRail road car truck
US8011306Oct 20, 2009Sep 6, 2011National Steel Car LimitedRail road car and truck therefor
US8113126Dec 15, 2009Feb 14, 2012National Steel Car LimitedRail road car truck and bolster therefor
US8272333Dec 7, 2010Sep 25, 2012National Steel Car LimitedRail road car truck and members thereof
US8413592Nov 2, 2010Apr 9, 2013National Steel Car LimitedRail road car truck
US8720347Sep 15, 2012May 13, 2014National Steel Car LimitedRelieved bearing adapter for railroad freight car truck
US8726812Sep 15, 2012May 20, 2014National Steel Car LimitedRail road freight car truck with self-steering rocker
US8746151Mar 3, 2009Jun 10, 2014National Steel Car LimitedRail road car truck and fitting therefor
US8770113Aug 10, 2009Jul 8, 2014National Steel Car LimitedRail road freight car with damped suspension
WO1990011216A1 *Mar 14, 1990Sep 25, 1990Sambre & Meuse UsinesDeformable chassis-bogie and process and spare parts assembly for improving same
Classifications
U.S. Classification105/198.2, 105/230
International ClassificationB61F5/12, B61F5/02
Cooperative ClassificationB61F5/122
European ClassificationB61F5/12B