US3805707A - Railway truck snubbing indication arrangement - Google Patents

Railway truck snubbing indication arrangement Download PDF

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Publication number
US3805707A
US3805707A US00272760A US27276072A US3805707A US 3805707 A US3805707 A US 3805707A US 00272760 A US00272760 A US 00272760A US 27276072 A US27276072 A US 27276072A US 3805707 A US3805707 A US 3805707A
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United States
Prior art keywords
friction shoe
bolster
shoe means
friction
opening
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
US00272760A
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English (en)
Inventor
O Neumann
F Korpics
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 US00272760A priority Critical patent/US3805707A/en
Priority to CA167,509A priority patent/CA992395A/en
Priority to GB3405773A priority patent/GB1427816A/en
Priority to JP48079995A priority patent/JPS4957513A/ja
Priority to BR5363/73A priority patent/BR7305363D0/pt
Priority to BE133585A priority patent/BE802461A/xx
Priority to ZA734892A priority patent/ZA734892B/xx
Priority to AU58239/73A priority patent/AU463334B2/en
Application granted granted Critical
Publication of US3805707A publication Critical patent/US3805707A/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

  • ABSTRACT In a railway truck wherein friction shoes are operatively carried in wedge pockets of the bolster and are urged upwardly and outwardly by one or more springs between the bottom of the friction shoe and the truck side frame, an opening defined by said bolster through which a surface of said friction shoe is viewable thus indicating the extent of Wear of said shoe and the amount of useful life remaining for said friction shoe.
  • the present invention contemplates the provision of a visual wear limit indicator in the end portion of the bolster adjacent each of the friction shoes which are operatively disposed in wedge-shaped pockets at opposite sides of the bolster and near each end thereof.
  • a primary object of the present invention is to provide maintenance and service personnel with a wear status indicator which will reveal at a glance the exact condition of the snubbing parts.
  • a further object of the invention is to provide a novel wear status indicator that will reveal the half worn condition for the snubbing elements and thereby informing maintenance and service personnel of the need to insert a shim between the shoe spring seat and the top of the control spring. This would restore control spring pressure to approximately the level that existed under new conditions.
  • Another object of the invention resides in the fact that the wear status indicator will clearly show the presence or absence of a shim thus making it easier to make a determination of whether a complete friction shoe must be replaced in order to return control spring pressure within specified limits or whether the mere insertion of a shim will restorethe desired control spring pressures.
  • FIG. 1 is a fragmentary side elevational view of a railway car truck embodying the invention.
  • FIG. 2 is an enlarged view of the end portion of the truck bolster shown in FIG. 1 illustrating in detail the wear status indicator.
  • FIG. 3 is a fragmentary side view of the railway car truck side frame together with a truck bolster constructed according to the present invention and assembled in their operative positions; portions of the side frame and the bolster being shown in section to better illustrate the improved constructions.
  • FIG. 4 is a fragmentary sectional view through a railway car truck illustrating a modified form of our invention, the view being in section and comparable to the sectional view of FIG. 1.
  • FIG. 5 is a perspective view of the friction shoe.
  • FIG. 6 is a fragmentary sectional view taken on line 6-6 of FIG. 4.
  • FIG. 7 is a fragmentary sectional view similar to FIG. 6 with the addition of a shim between the lower surface of the friction shoe and the top of the control spring.
  • FIGS. 1 and 3 a portion of a railway truck may be seen which is of conventional construction and includes a pair of spaced side frames. one of which' 10 is shown. Each side frame has a compression member 12 and a tension member 14 interconnected by spaced vertical columns 16 the sides of which form a window 18 (FIG. 3) substantially rectangular in shape with the upper portion 18a of the window being slightly narrower than the lower portion 18b.
  • railway truck for the purpose of the present disclosure may be considered identical at both sides thereof and for the sake of brevity only that portion shown will be described in detail.
  • the window formed by the compression member 12, tension member 14 and spaced vertical columns 16 is adapted to receive the end of the bolster, generally indicated at 20.
  • the lower suface 22 at the end of the bolster 20 is supported by a plurality of support spring groups 24 which rest at their lower ends on the side frame tension member 14.
  • In opposite side walls 26 at each end of the bolster 20 are wedge-shaped receiving pockets 28 which open outwardly toward the side frame columns 16 and have an inclined inner wall 30 which has a width corresponding substantially to the width of the wedge-shaped friction shoe 32 positioned therein.
  • the inclined inner wall 30 projects above the plane of the bolster top wall 34.
  • One wedge-shaped friction shoe 32 is operatively carried in each pocket 28 and includes an inclined surface 36 corresponding to and frictionally engaging the inclined wall 30 of the pocket 28 as well as a vertical surface 38 for frictionally engaging vertical wear plates 40 on the adjacent side frame columns 16.
  • the lower surface 42 of the wedge-shaped friction shoe is engaged by the upper end of a control spring 44 which is disposed between said friction shoe 32 and the tension member 14 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.
  • a wear status indicator shown generally at 46.
  • the wear status indicator provides for the viewing of a portion of the wedge-shaped friction shoe and thus enables one to compare the present position of the friction shoe to a previously established reference.
  • the established reference point can either be a point that reflects the new unworn condition of the friction shoe or in the alternative, reflects a previously established point which indicates a condition of maximum allowable wear for a friction shoe.
  • Additional reference points can be established on the wear status indicator which correspond to conditions that will exist when other serviceprocedures are to be performed. For example, a reference point could be established to indicate when a shim should be inserted between the lower surface of the friction shoe 42 and the top of the control spring 44 to insure that proper spring pressures are maintained.
  • FIG. 2 shows in detail a preferred embodiment of the wear status indication shown generally at 46 in FIGS. 1 and 3.
  • the opening of the wear status indicator 46 is defined by the flat surface of the web 47 located in the end of the bolster 20.
  • the lower portion 48 of the opening is substantially rectangular in shape with three sides of the rectangle being defined by the surface of the web 47 the left side 49 and right side 50 being substantially parallel to each other and perpendicular to the lower side 51.
  • the upper portion 52 of the opening is also substantially rectangular in shape but each of the dimensions of the upper rectangle being less than the respective dimension of the lower portion 48 of the opening.
  • Three sides of the upper portion 52 of the opening are also defined by the web 47 with the left side 53 and right side 54 of the upper portion 52 being substantially parallel to each other and parallel to the vertical sides 49 and 50 of the lower portion 48 of the opening.
  • the upper side 55 of the upper portion 52 forms the top of the wear status indicator 56 which'is substantially parallel to the lower side 51 of the lower portion 48 of the opening which also forms the bottom of the wear status indicator 46.
  • the fourth side of both the upper and lower rectangular portions 48 and 52 of the: opening are common to one another. However, due to the difference in dimensions of the two rectangles, shoulders 56 are formed at the points of intersection of the two portions 48 and 52 of the opening.
  • the wear status indicator 46 is to be constructed and positioned in the web 47 of the end wall of the bolster 20 and extends through the wall to the outboard wall 58 of the wedge-shaped bolster pocket 28 thereby providing an unobstructed view of a reference index such as the friction shoe spring seat 42.
  • the lower portion of opening 48 of the wear status indicator is so positioned that alignment of a reference index such as the friction shoe spring seat 42 in said opening would exhibit the unwornor satisfactory condition of the snubbing parts associated with that wear status indicator.
  • the wear status indicator 46 may also reveal other conditions of the associated parts, For example, in the event the friction shoe spring seat 42 is in alignment with the shoulders 56 formed by the intersection of the upper and lower portions 52 and 48 of the opening respectively, the wear status indicator 46 would alert maintenance and service personnel to the fact that the friction shoe 32 should either be replaced or its effectiveness renewed by the insertion of a shim 60 between the lower portion of the friction shoe spring seat 42 and the control spring 44 thereby restoring proper column pressure to the control spring In the event the spring seat were aligned with the upper side of the upper portion 52 of the opening, this would establish the maximum rise limit for the friction shoe 32 and would indicate a totally worn condition.
  • opening is meant to include the use of any translucent material such as glass or plastic which may either be mounted in or cover the perforations in the end of the bolster 20 which constitutes the upper and lower portions 52 and 48 respectively that are part of the wear status indicator opening.
  • FIGS. 4 through 7 there is shown another embodiment of the present invention wherein a protrusion or pointer arm 62 is attached at one end thereof to the friction shoe 32, the other end of said pointer projects or extends through a slit defined by the web 47 in the end of the bolster 20.
  • the slit extends from the outboard wall 58 of the bolster pocket 28 through the end of the bolster 20.
  • the column pressure of the control springs 44 may be restored by the insertion of a shim 60 between the spring seat 42 of the friction shoe 32 and the top of the control spring 44.
  • a railway car truck including a bolster resiliently supported on spring groups in side frames between spaced vertical columns thereof, said bolster defining pockets on both sides thereof, friction shoe means wedgingly interposed between said pockets and said vertical columns, compressed spring means for urging said friction shoe means into wedging frictional engagement with said pockets and said vertical columns, the
  • the bolster defines an opening through which a reference index segment on said friction shoe means is viewable and aligned with said opening only during the useful life of said friction shoe means; said reference index moving vertically across said bolster defining opening in direct proportion to the wear of said friction shoe means.
  • said bolster opening comprises distinguishable first and second portions, said reference index segment on said friction shoe means being viewable through and alignable with either of said portions throughout the useful life of said friction shoe means.
  • said bolster defined opening comprises a upwardly extending slot.
  • said friction shoe means including pointer means extending through said slot.
  • PatentNo. 3,805,707 Dated April 23, 1974 Inventm-(s) Otto Walter Neumann and Frank Joseph Korpics It is certified that error appears in the above-identified patent ,and that said Letters Patent are hereby corrected as shown below:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Braking Arrangements (AREA)
US00272760A 1972-07-18 1972-07-18 Railway truck snubbing indication arrangement Expired - Lifetime US3805707A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00272760A US3805707A (en) 1972-07-18 1972-07-18 Railway truck snubbing indication arrangement
CA167,509A CA992395A (en) 1972-07-18 1973-03-29 Truck snubbing arrangement
JP48079995A JPS4957513A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-07-18 1973-07-17
BR5363/73A BR7305363D0 (pt) 1972-07-18 1973-07-17 Aperfeicoamento em truque para vagao ferroviario
GB3405773A GB1427816A (en) 1972-07-18 1973-07-17 Railway car bogies
BE133585A BE802461A (fr) 1972-07-18 1973-07-17 Dispositif amortisseur pour boggies de wagon
ZA734892A ZA734892B (en) 1972-07-18 1973-07-18 Truck snubbing arrangement
AU58239/73A AU463334B2 (en) 1972-07-18 1973-07-18 Truck snubbing arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00272760A US3805707A (en) 1972-07-18 1972-07-18 Railway truck snubbing indication arrangement

Publications (1)

Publication Number Publication Date
US3805707A true US3805707A (en) 1974-04-23

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Application Number Title Priority Date Filing Date
US00272760A Expired - Lifetime US3805707A (en) 1972-07-18 1972-07-18 Railway truck snubbing indication arrangement

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Country Link
US (1) US3805707A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS4957513A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE802461A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR7305363D0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA992395A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1427816A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA734892B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (13)

* 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
US5086708A (en) * 1990-11-01 1992-02-11 Amsted Industries Incorporated Railcar truck bolster with immobilized friction shoes
US5095823A (en) * 1990-12-17 1992-03-17 Amsted Industries Incorporated Friction shoe for railcar truck
CN1070791C (zh) * 1995-08-10 2001-09-12 标准汽车公司 双面摩擦楔
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
WO2022001463A1 (zh) * 2020-07-02 2022-01-06 中车眉山车辆有限公司 一种带有嵌入式减振降噪装置的铰接转向架
US11565728B2 (en) 2013-12-30 2023-01-31 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US12291247B2 (en) 2013-12-30 2025-05-06 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
CA1178122A (en) * 1980-10-20 1984-11-20 Amsted Industries Incorporated Friction shoe wear indicator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1130665A (en) * 1914-02-06 1915-03-02 Baldwin Locomotive Works Swing-dampener for truck-bolsters.
US1942188A (en) * 1931-12-11 1934-01-02 Nat Malleable & Steel Castings Stabilizer for car trucks
US2176909A (en) * 1934-03-31 1939-10-24 Nat Malleable & Steel Castings Car truck
US2422638A (en) * 1944-09-18 1947-06-17 James R Cardwell Stabilizing mechanism for railway trucks and the like
US2682232A (en) * 1950-03-18 1954-06-29 Holland Co Method of mounting damping devices on railway car trucks
US2896550A (en) * 1956-02-08 1959-07-28 Holland Co Bolster damping arrangement for railway car trucks
US2976822A (en) * 1958-07-01 1961-03-28 Holland Co Apparatus and method for modifying fabricated bolsters to provide ride stabilization
US3342139A (en) * 1965-02-01 1967-09-19 Amsted Ind Inc Snubbed bolster truck

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1130665A (en) * 1914-02-06 1915-03-02 Baldwin Locomotive Works Swing-dampener for truck-bolsters.
US1942188A (en) * 1931-12-11 1934-01-02 Nat Malleable & Steel Castings Stabilizer for car trucks
US2176909A (en) * 1934-03-31 1939-10-24 Nat Malleable & Steel Castings Car truck
US2422638A (en) * 1944-09-18 1947-06-17 James R Cardwell Stabilizing mechanism for railway trucks and the like
US2682232A (en) * 1950-03-18 1954-06-29 Holland Co Method of mounting damping devices on railway car trucks
US2896550A (en) * 1956-02-08 1959-07-28 Holland Co Bolster damping arrangement for railway car trucks
US2976822A (en) * 1958-07-01 1961-03-28 Holland Co Apparatus and method for modifying fabricated bolsters to provide ride stabilization
US3342139A (en) * 1965-02-01 1967-09-19 Amsted Ind Inc Snubbed bolster truck

Cited By (15)

* 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
US5086708A (en) * 1990-11-01 1992-02-11 Amsted Industries Incorporated Railcar truck bolster with immobilized friction shoes
US5095823A (en) * 1990-12-17 1992-03-17 Amsted Industries Incorporated Friction shoe for railcar truck
CN1070791C (zh) * 1995-08-10 2001-09-12 标准汽车公司 双面摩擦楔
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
US9216450B2 (en) 2011-05-17 2015-12-22 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
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
US12291247B2 (en) 2013-12-30 2025-05-06 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
WO2022001463A1 (zh) * 2020-07-02 2022-01-06 中车眉山车辆有限公司 一种带有嵌入式减振降噪装置的铰接转向架

Also Published As

Publication number Publication date
GB1427816A (en) 1976-03-10
JPS4957513A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-04
CA992395A (en) 1976-07-06
ZA734892B (en) 1974-06-26
BE802461A (fr) 1974-01-17
AU5823973A (en) 1975-02-13
BR7305363D0 (pt) 1974-08-22

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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