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US3857341A - Snubbed bolster - Google Patents

Snubbed bolster Download PDF

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Publication number
US3857341A
US3857341A US00295871A US29587172A US3857341A US 3857341 A US3857341 A US 3857341A US 00295871 A US00295871 A US 00295871A US 29587172 A US29587172 A US 29587172A US 3857341 A US3857341 A US 3857341A
Authority
US
United States
Prior art keywords
bolster
wall
pocket
top wall
wedge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00295871A
Other languages
English (en)
Inventor
O Neumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amsted Industries Inc
Original Assignee
Amsted Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amsted Industries Inc filed Critical Amsted Industries Inc
Priority to US00295871A priority Critical patent/US3857341A/en
Priority to CA168,681A priority patent/CA969807A/en
Priority to ZA737432*A priority patent/ZA737432B/xx
Priority to GB4445973A priority patent/GB1444636A/en
Priority to AU60662/73A priority patent/AU471946B2/en
Priority to BE136345A priority patent/BE805664A/xx
Priority to AR250429A priority patent/AR203018A1/es
Priority to JP48112422A priority patent/JPS4971612A/ja
Priority to BR7846/73A priority patent/BR7307846D0/pt
Application granted granted Critical
Publication of US3857341A publication Critical patent/US3857341A/en
Assigned to AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. reassignment AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, AS AGENT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/04—Bolster supports or mountings
    • B61F5/12—Bolster supports or mountings incorporating dampers
    • B61F5/122—Bolster supports or mountings incorporating dampers with friction surfaces

Definitions

  • the invention provides for a bolster wherein the outer portion of an inclined bolster wall g gi g g 2 that extends above the plane of the bolster top wall is le 0 earc 1 connected to the top wall by an integrally cast hood.
  • Such an arrangement thereby encloses the entire bolster pocket except at the bottom of each pocket and [56] References Clted the side of the pockets adjacent the vertical columns UNITED STATES PATENTS of the side frame. This improved construction greatly 2,652,002 9/1953 Clasen....
  • 105/197 DB increases the strength of that portion of the inclined 2,661,702 12/1953 Kowalik 197 DB wall that extends to the vertical bolster side wall and 2,974,610 3/1961 Quinn et a1 105/197 DB above the bolster top wall 3,461,815 8/1969 Gedris et a1.
  • truck bolster specifically in the area on either side of the bolster where the friction shoes are positioned; as it was common in prior art arrangements for cracks to form after prolonged service in the top wall of the bolster around the inclined bolster wall that extends upwardly through the bolster top wall.
  • the present invention contemplates the provision of a freight car truck comprising spaced side frames supported at their ends upon wheel and axle assemblies and interconnected by a bolster which is resiliently supported at its ends upon the side frames.
  • the bolster is provided with shoe pockets to receive friction shoes which are urged into frictional engagement against side frame columns by compression springs to snub movements of the bolster relative to the side frames.
  • the improved hooded construction of the bolster top wall and inclined walls prevents the cracking of the extensions of the inclined walls that was common in prior art arrangements.
  • FIG. 1 is a fragmentary perspective view of a railway truck side frame and bolster embodying a preferred form of the invention, the view being taken from the outboard side of the side frame. Portions of the side frame and bolster are broken away for clarity.
  • FIG. 2 is an exploded perspective view of the truck bolster friction shoes and control springs showing more clearly the improvedconstruction.
  • FIG. 3 is a fragmentary sectional view through the bolster structure shown in FIG. 2,. the section being taken in the vertical plane indicated by line 33.
  • FIG. 1 which illustrates a portion of a truss type railway truck
  • the side frame indicated generally at is seen to comprise a tension member 12 and a compression member 14 interconnected by spaced vertical columns 16, the sides of which form a window 18 (FIG. 1) substantially rectangular in shape.
  • the side frame 10 is supported in the usual manner by wheel and axle assemblies which are not shown in the drawings.
  • the window 18 is adapted to receive the end of the bolster, generally indicated at 20.
  • the lower surface 22 at the end of the bolster is supported by a plurality of support spring groups 24 which rest at their lower ends on the side frame tension member 12.
  • a plurality of support spring groups 24 which rest at their lower ends on the side frame tension member 12.
  • opposite side walls 26 at each end of the bolster 20 are wedgeshaped receiving pockets 28 which open outwardly toward the side frame columns 16 and have an inclined inner wall or sloped surface 30 which has a width corresponding substantially to the width of the wedgeshaped friction shoe 32 positioned therein.
  • the inclined inner wall 30 projects above the plane of the bolster top wall 34. That outer portion of the sloped surface 30a that extendsabove the top wall of the bolster 34 is connected to the top wall of the bolster 34 by an integrally cast hood 35. Such an arrangement encloses the entire bolster pocket 28 except at the bottom and the side adjacent the vertical column 16. This improved construction increases the strength of that portion of the inclined wall 30 that extends above the top wall 34 of the bolster 20.
  • One wedge-shaped friction shoe 32 is operatively carried in each pocket 28 and defines an inclined surface 36 corresponding to and frictionally engaging the inclined wall or sloped surface 30 of the pocket 28.
  • Shoe 32 also defines a vertical surface 38 for frictionally engaging a wear plate 40 on the adjacent side frame column 16.
  • the lower surface 42 of the wedgeshaped friction shoe 32 is engaged by the upper end of a control spring 44 which is disposed between said friction shoe 32 and the tension member 12 of the side frame 10.
  • the inclined inner wall 30 therefore provides an inclined thrust area equal to that of the engaged portion of the inclined surface 36 of the wedge-shaped friction shoe 32.
  • the improved construction of the bolster 20 greatly increases the strength of the inclined or sloped surface 30 in the bolster pocket 28, thereby eliminating the failures that were prevalent in prior art arrangements, as it was common for cracks to form at the intersection of the bolster top wall 34 and that portion of the inclined surface 30a that extends above the top wall 34 of the bolster 20.
  • the upper portion of the inclined surface 30a would eventually break off, thereby allowing the friction shoe 32 to rise drastically or in some casescome out of the pocket entirely.
  • effective snubbing of the bolster is severely hampered which may result in the bolster oscillations increasing to such a magnitude that the support springs 24 would be driven to solid,- ultimately resulting in their damage.
  • hooded arrangement prevents the undesirable build-up of stress that was common in prior art arrangements since the friction shoe can no longer wear through the top wall of the bolster at the point where the inclined surface intersects the top wall 34 of the bolster 20.
  • hooded portion over each pocket 28 could be extended across the top 34. of the bolster 20 to join the hooded portion on the opposite side of the bolster and thereby transversing the entire width of the bolster 20.
  • Such an arrangement would greatly increase the strength of the inclined or sloped surface 30a that extends above the top wall 34 of the bolster 20.
  • top and bottom walls spaced side walls interconnecting said top and bottom walls, said spaced side walls defining inboard and outboard sides of a friction shoe pocket, an opening in the bottom wall affording access to said pocket by an associated shoe-actuating spring, a sloping wedge wall having inboard and outboard edges, said wedge wall being integral with said side walls and integral with and extending above said top wall to afford a downwardly facing wedge surface for an associated shoe in said pocket, and a hood integral with said inboard and outboard edges of said wedge wall and with said top Wall along said edges, the outer edge of said hood being substantially coplanar with said side walls along their outer surfaces and defining therewith the outer extremity of said pocket.
  • a railway car truck bolster according to claim 1 wherein each side of the hood above the top wall is substantially triangular as seen in the end elevational view of the bolster.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • Escalators And Moving Walkways (AREA)
US00295871A 1972-10-10 1972-10-10 Snubbed bolster Expired - Lifetime US3857341A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00295871A US3857341A (en) 1972-10-10 1972-10-10 Snubbed bolster
CA168,681A CA969807A (en) 1972-10-10 1973-04-13 Bolster construction
ZA737432*A ZA737432B (en) 1972-10-10 1973-09-20 Improved bolster construction
GB4445973A GB1444636A (en) 1972-10-10 1973-09-21 Railway car truck bolster construction
AU60662/73A AU471946B2 (en) 1972-10-10 1973-09-25 Improved bolster construction
BE136345A BE805664A (fr) 1972-10-10 1973-10-04 Traverse dansante pour bogie
AR250429A AR203018A1 (es) 1972-10-10 1973-10-08 Cabezal de bogie para vagon ferroviario
JP48112422A JPS4971612A (ja) 1972-10-10 1973-10-08
BR7846/73A BR7307846D0 (pt) 1972-10-10 1973-10-09 Aperfeicoamentos em travessa para truque ferroviario

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00295871A US3857341A (en) 1972-10-10 1972-10-10 Snubbed bolster

Publications (1)

Publication Number Publication Date
US3857341A true US3857341A (en) 1974-12-31

Family

ID=23139560

Family Applications (1)

Application Number Title Priority Date Filing Date
US00295871A Expired - Lifetime US3857341A (en) 1972-10-10 1972-10-10 Snubbed bolster

Country Status (9)

Country Link
US (1) US3857341A (ja)
JP (1) JPS4971612A (ja)
AR (1) AR203018A1 (ja)
AU (1) AU471946B2 (ja)
BE (1) BE805664A (ja)
BR (1) BR7307846D0 (ja)
CA (1) CA969807A (ja)
GB (1) GB1444636A (ja)
ZA (1) ZA737432B (ja)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003318A (en) * 1975-06-25 1977-01-18 Standard Car Truck Company Reinforced bolster pocket wall
US4084513A (en) * 1975-06-25 1978-04-18 Standard Car Truck Company Railroad car side frame construction
FR2574035A1 (fr) * 1984-12-03 1986-06-06 Amsted Ind Inc Logement de machoire de frottement, notamment pour bogies
DE3839916A1 (de) * 1988-11-26 1990-05-31 Ant Nachrichtentech Wellenlaengenselektiver optischer koppler
US6276283B1 (en) 1999-04-07 2001-08-21 Amsted Industries Incorporated Railway truck wear plate
US6374749B1 (en) 1999-10-07 2002-04-23 Naco, Inc. Friction wedge for a railroad car truck having a replaceable wear member
US7004079B2 (en) 2001-08-01 2006-02-28 National Steel Car Limited Rail road car and truck therefor
US7143700B2 (en) 2003-07-08 2006-12-05 National Steel Car Limited Rail road car truck and fittings therefor
US7255048B2 (en) 2001-08-01 2007-08-14 Forbes James W Rail road car truck with rocking sideframe
US7328659B2 (en) 2001-08-01 2008-02-12 National Steel Car Limited Rail road freight car with resilient suspension
US7631603B2 (en) 2004-12-03 2009-12-15 National Steel Car Limited Rail road car truck and bolster therefor
US7654204B2 (en) 2002-08-01 2010-02-02 National Steel Car Limited Rail road car truck with bearing adapter and method
US7699008B2 (en) 2001-08-01 2010-04-20 National Steel Car Limited Rail road freight car with damped suspension
US7775163B2 (en) 2004-12-23 2010-08-17 National Steel Car Limited Rail road car and bearing adapter fittings therefor
US7823513B2 (en) 2003-07-08 2010-11-02 National Steel Car Limited Rail road car truck
US9216450B2 (en) 2011-05-17 2015-12-22 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9233416B2 (en) 2011-05-17 2016-01-12 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9346098B2 (en) 2011-05-17 2016-05-24 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US10358151B2 (en) 2013-12-30 2019-07-23 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US10562547B2 (en) 2013-12-30 2020-02-18 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US10752265B2 (en) 2013-12-30 2020-08-25 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US11565728B2 (en) 2013-12-30 2023-01-31 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274340A (en) * 1979-10-15 1981-06-23 Amsted Industries Incorporated Railway car truck frictional snubbing arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2652002A (en) * 1949-10-11 1953-09-15 American Steel Foundries Snubbed truck
US2661702A (en) * 1948-10-08 1953-12-08 American Steel Foundries Snubbed truck
US2974610A (en) * 1958-10-23 1961-03-14 American Steel Foundries Snubbed bolster truck
US3461815A (en) * 1966-08-01 1969-08-19 Midland Ross Corp Snubbed railway truck bolster

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661702A (en) * 1948-10-08 1953-12-08 American Steel Foundries Snubbed truck
US2652002A (en) * 1949-10-11 1953-09-15 American Steel Foundries Snubbed truck
US2974610A (en) * 1958-10-23 1961-03-14 American Steel Foundries Snubbed bolster truck
US3461815A (en) * 1966-08-01 1969-08-19 Midland Ross Corp Snubbed railway truck bolster

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003318A (en) * 1975-06-25 1977-01-18 Standard Car Truck Company Reinforced bolster pocket wall
US4084513A (en) * 1975-06-25 1978-04-18 Standard Car Truck Company Railroad car side frame construction
FR2574035A1 (fr) * 1984-12-03 1986-06-06 Amsted Ind Inc Logement de machoire de frottement, notamment pour bogies
DE3839916A1 (de) * 1988-11-26 1990-05-31 Ant Nachrichtentech Wellenlaengenselektiver optischer koppler
US6276283B1 (en) 1999-04-07 2001-08-21 Amsted Industries Incorporated Railway truck wear plate
US6374749B1 (en) 1999-10-07 2002-04-23 Naco, Inc. Friction wedge for a railroad car truck having a replaceable wear member
US6691625B2 (en) 1999-10-07 2004-02-17 Asf-Keystone, Inc. Friction wedge for a railroad car truck having a replaceable wear member
US8011306B2 (en) 2001-08-01 2011-09-06 National Steel Car Limited Rail road car and truck therefor
US7255048B2 (en) 2001-08-01 2007-08-14 Forbes James W Rail road car truck with rocking sideframe
US7328659B2 (en) 2001-08-01 2008-02-12 National Steel Car Limited Rail road freight car with resilient suspension
US10745034B2 (en) 2001-08-01 2020-08-18 National Steel Car Limited Rail road car and truck therefor
US9789886B2 (en) 2001-08-01 2017-10-17 National Steel Car Limited Rail road car and truck therefor
US7699008B2 (en) 2001-08-01 2010-04-20 National Steel Car Limited Rail road freight car with damped suspension
US8770113B2 (en) 2001-08-01 2014-07-08 National Steel Car Limited Rail road freight car with damped suspension
US7004079B2 (en) 2001-08-01 2006-02-28 National Steel Car Limited Rail road car and truck therefor
US20110126392A1 (en) * 2002-08-01 2011-06-02 National Steel Car Limited Rail road car truck with bearing adapter and method
US7654204B2 (en) 2002-08-01 2010-02-02 National Steel Car Limited Rail road car truck with bearing adapter and method
US9254850B2 (en) 2002-08-01 2016-02-09 National Steel Car Limited Rail road car truck with bearing adapter and method
US8720347B2 (en) 2003-07-08 2014-05-13 National Steel Car Limited Relieved bearing adapter for railroad freight car truck
US9278700B2 (en) 2003-07-08 2016-03-08 National Steel Car Limited Fittings for railroad car truck
US7845288B2 (en) 2003-07-08 2010-12-07 National Steel Car Limited Rail road car truck and members thereof
US7497169B2 (en) 2003-07-08 2009-03-03 National Steel Car Limited Rail road car truck and fittings therefor
US8272333B2 (en) 2003-07-08 2012-09-25 National Steel Car Limited Rail road car truck and members thereof
US8413592B2 (en) 2003-07-08 2013-04-09 National Steel Car Limited Rail road car truck
US7143700B2 (en) 2003-07-08 2006-12-05 National Steel Car Limited Rail road car truck and fittings therefor
US8726812B2 (en) 2003-07-08 2014-05-20 National Steel Car Limited Rail road freight car truck with self-steering rocker
US8746151B2 (en) 2003-07-08 2014-06-10 National Steel Car Limited Rail road car truck and fitting therefor
US7823513B2 (en) 2003-07-08 2010-11-02 National Steel Car Limited Rail road car truck
US10286932B2 (en) 2003-07-08 2019-05-14 National Steel Car Limited Rail road car truck and members therefor
US9475508B2 (en) 2003-07-08 2016-10-25 National Steel Car Limited Rail road car truck and fitting therefor
US7946229B2 (en) 2003-07-08 2011-05-24 National Steel Car Limited Rail road car truck
US7631603B2 (en) 2004-12-03 2009-12-15 National Steel Car Limited Rail road car truck and bolster therefor
US8113126B2 (en) 2004-12-03 2012-02-14 National Steel Car Limited Rail road car truck and bolster therefor
US7775163B2 (en) 2004-12-23 2010-08-17 National Steel Car Limited Rail road car and bearing adapter fittings therefor
US9346098B2 (en) 2011-05-17 2016-05-24 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9233416B2 (en) 2011-05-17 2016-01-12 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US10112629B2 (en) 2011-05-17 2018-10-30 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9216450B2 (en) 2011-05-17 2015-12-22 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US10350677B2 (en) 2011-05-17 2019-07-16 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US10358151B2 (en) 2013-12-30 2019-07-23 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US10562547B2 (en) 2013-12-30 2020-02-18 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US10752265B2 (en) 2013-12-30 2020-08-25 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US11565728B2 (en) 2013-12-30 2023-01-31 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems

Also Published As

Publication number Publication date
AR203018A1 (es) 1975-08-08
BR7307846D0 (pt) 1974-07-11
CA969807A (en) 1975-06-24
ZA737432B (en) 1974-08-28
BE805664A (fr) 1974-02-01
AU6066273A (en) 1975-03-27
AU471946B2 (en) 1976-05-06
GB1444636A (en) 1976-08-04
JPS4971612A (ja) 1974-07-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE., IL

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF CHICAGO, AS AGENT;REEL/FRAME:005070/0731

Effective date: 19880831