US3856154A - Railway car coupler - Google Patents

Railway car coupler Download PDF

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Publication number
US3856154A
US3856154A US00464355A US46435574A US3856154A US 3856154 A US3856154 A US 3856154A US 00464355 A US00464355 A US 00464355A US 46435574 A US46435574 A US 46435574A US 3856154 A US3856154 A US 3856154A
Authority
US
United States
Prior art keywords
coupler
arm
knuckle
lever
lever member
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
US00464355A
Other languages
English (en)
Inventor
K Depenti
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.)
Midland Ross Corp
National Casting Inc
Original Assignee
Midland Ross Corp
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 Midland Ross Corp filed Critical Midland Ross Corp
Priority to US00464355A priority Critical patent/US3856154A/en
Priority to IN2785/CAL/1974A priority patent/IN144628B/en
Priority to GB55020/74A priority patent/GB1484058A/en
Priority to GB22762/75A priority patent/GB1484059A/en
Application granted granted Critical
Publication of US3856154A publication Critical patent/US3856154A/en
Priority to AR257975A priority patent/AR204856A1/es
Priority to AU78037/75A priority patent/AU491479B2/en
Priority to ZA00750967A priority patent/ZA75967B/xx
Priority to BE2054173A priority patent/BE825910A/xx
Priority to BR1409/74A priority patent/BR7501409A/pt
Priority to CA222,082A priority patent/CA1024105A/en
Priority to JP50042155A priority patent/JPS50141013A/ja
Priority to IT22434/75A priority patent/IT1037331B/it
Priority to CA288,355A priority patent/CA1037911A/en
Assigned to NATIONAL CASTINGS INC., A CORP. OF DE reassignment NATIONAL CASTINGS INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL CASTINGS INC., A CORP. OF IL
Assigned to CONGRESS FINANCIAL CORPORATION reassignment CONGRESS FINANCIAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS INC., A DE CORP.
Assigned to NATIONAL CASTINGS INC. A CORP. OF DE reassignment NATIONAL CASTINGS INC. A CORP. OF DE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CONGRESS FINANCIAL CORPORATION (CENTRAL)
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS INC.
Assigned to NATIONAL CASTINGS CORPORATION, A CORP. OF DE reassignment NATIONAL CASTINGS CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS CORPORATION (MERGED INTO), NATIONAL CASTINGS INC.
Assigned to NATIONAL CASTINGS INC., A CORP. OF IL reassignment NATIONAL CASTINGS INC., A CORP. OF IL CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SHER ACQUISITION CO.
Anticipated expiration legal-status Critical
Assigned to NATIONAL CASTINGS, INC. reassignment NATIONAL CASTINGS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, THE
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
    • B61G3/04—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling head having a guard arm on one side and a knuckle with angularly-disposed nose and tail portions pivoted to the other side thereof, the nose of the knuckle being the coupling part, and means to lock the knuckle in coupling position, e.g. "A.A.R." or "Janney" type
    • B61G3/06—Knuckle-locking devices
    • B61G3/08—Control devices, e.g. for uncoupling

Definitions

  • SHEET 1 [If 4 l RAILWAY CAR COUPLER BACKGROUND OF THE INVENTION In K. L. DePenti U.S. Pat. No. 3,717,261 issued Feb. 20, 1973, there is shown a railway car coupler of the knuckle type in which the locked knuckle thereof automatically opens during uncoupling of coupled couplers. Energized means in the form of a spring is employed to 1 effect opening of the knuckle. As the coupler parts SUMMARY OF THE INVENTION The invention as applied to a knuckle type coupler comprises a spring-actuated lever member within the coupler head which actuates a cam element to effect unlocking and opening of the knuckle.
  • the lever member is pivotally mounted in the head and has a roller element which, upon pivoting of the lever member, is moved into engagement with and rolls along a cam surface on the cam element to actuate the latter.
  • the lever member includes means to which a pivotal spring seat is connected, the seat being the means through which the spring force is transmitted to the lever member.
  • the lever member also has arm means to which a plunger-like member within the coupler head is operatively attached and which is adapted to be engaged by an opposing coupler to inactivate the lever member BRIEF DESCRIPTION OF THE DRAWING
  • FIG. I is a vertical sectional view of a car coupler embodying the invention, the coupler knuckle being closed and locked.
  • FIG. 2 is aside elevational view partly in section of car coupler embodying the invention, the coupler parts being shown in position corresponding to the coupled condition of the coupler.
  • FIG. 3' is a transverse vertical sectional view taken along line 33 of FIG. 2.
  • FIG. 4 is an enlarged fragmentary view showing the coupler parts in the same position as in FIG. 2.
  • FIG. 4a is a fragmentary view taken along line 4a-4a of FIG. 4.
  • FIG. 5 is a view similar to FIG. 4 but showing the lever member in position in which its roller element is in initial contact with the cam surface of the cam element.
  • FIG. 6 is a view similar to FIG. 5 but showing the position of the parts when the knuckle has been fully opened. r
  • FIG. '7 is an end view of the lever member shown the previous figures.
  • FIG. 8 is a side elevational view of the lever member shown in FIG. 7.
  • FIG. 9 is a sectional plan view of the coupler shown in the previous figures shown in coupled relation with a mating coupler.
  • a car coupler having a head 10, and a knuckle l2 pivoted to the head by a vertical pivot pin 14.
  • the head is chambered as at 16 to receive a lock- 18 and the tail 20 of the knuckle.
  • FIGS. 1 and 9 the knuckle is shown in closed position, with lock 18 in opposed relation to knuckle tall 20 to lock the knuckle against movement to open position.
  • Lock 18 has a depending leg portion 22 to which is connected a lock lifter link 24 by means of a trunnion 26 which extends into elongated slot 28 in the lock leg.
  • the lower end of link 24 is pivotally connected to a rotor lever 30 which is pivotally attached to the underside of the coupler head by a rotor shaft 32.
  • the rotor shaft comprises an eye portion 34 to which an uncoupling rod 36 is attached.
  • Manual rotation of rotor shaft 32 by means of rod 36 results in actuation of rotor lever 30 and lifting of lock 18 by link 24 to the upper end of chamber 16 wherein it is out of locking relation with knuckle tail 20.
  • Further actuation of the rotor lever results in rearward movement of the lock leg 22 which forces arm 38a of knuckle thrower 38 to swing rearwardly, which causes another arm 38b on the thrower to engage the knuckle tail pad 20a and pivot the knuckle to open position.
  • the aforementioned coupler parts are those of the Association of American Railroads Alternate Standard F Interlocking coupler. whose construction and operation are well known and understood in the art.
  • the aforementioned operation of unlocking and opening of the knuckle 12 is also effected through the provision in the coupler of automatic means for actuating rotor lever. 30.
  • This automatic means is carried within the coupler head but is inactive except during the uncoupling of a pair of coupled couplers. When two cars are to be uncoupled, one of the coupled couplers is placed in lock-set position by actuation of the uncoupling rod 36 in the usual manner, but the mating coupler knuckle remains in locked condition.
  • the automatic means for opening the knuckle comprises a cam element 40 secured to rotorshaft 32 for rotation therewith, a lever 42 for actuating the cam element, spring means 44 for actuating lever 42 and a her izontally disposed plunger 46 operatively connected to the upper end of lever 42.
  • the automatic means functions to rotate shaft 32 to effect unlocking and opening of the knuckle in a manner similar to that when shaft 32 is manually operated by means of uncoupling rod 36.
  • the coupler head has spaced apart depending lugs 10a and 10b which have openings for receiving rotor shaft 32 for pivotally mounting the shaft thereto.
  • lug 10b Extending laterally from lug 10b is a hub portion 10c which receives shaft, 32 and provides added support therefor.
  • the portion of shaft 32. which extends betweenlugs 10a and 10b is provided with a flattened key portion 32a which receives the hooked portion 30h of rotor lever 30 to key the latter to the shaft.
  • the end portion of shaft 32 which extends laterally beyond the side of hub 100 is formed with a pair of flat surfaces 32b and 32cv adjoining the circular surface of the shaft.
  • Cam element 40 has an opening through its hub 40a which is complementary in configuration to the end of shaft 32 whereby the element is keyed to the shaft. Element 40 and the shaft are apertured to receive a bolt 50 to secure the element to the shaft. A lock nut 52 on bolt 50 is tightened against element 40 to protect against loss of the bolt and the element.
  • Cam element 40 is provided with an arm 40b having a convex cam surface 40c which is in a generally vertical position when the coupler is in knuckle closed and locked condition, as in FIGS. 1, 2, 3 and 4.
  • Pivotally mounted in chamber 54in the guard arm 56 of the coupler head is lever 42.
  • Lever 42 pivots about a horizontal pin 60 whose axis is disposed above and forwardly of the axis of rotor shaft 32. It will be noted that chamber 54 is open at the bottom side of the coupler head to facilitate assembly and inspection of the mechanism.
  • Lever 42 comprises a hub portion 61 for receiving pivot pin 60 and is provided with a roller arm 62 extending from the hub.
  • Arm 62 is disposed laterally of the longitudinal verticalcenterplane of the coupler the same distance as cam arm 40!) as seen in FIG. 3.
  • the outer end of arm 62 is bifurcated as at 62a, 62a.
  • a roller 64 is disposed within the bifurcation and is pivoted thereto by a horizontal pin 66.
  • Roller 64 is spaced a substantial distance forwardly of cam surface 40c when i the coupler is in knuckle closed position as in FIGS. 2 and 4, and is adapted to be moved into engagement with surface 400 when lever 42 is actuated, as will be hereinafter explained.
  • Lever 42 also has a pair of spaced arms 70 which are disposed laterally outwardly of roller arm 62 and generally on thesame side of hub 61 as arm 62.
  • Arms 70 are each formed with U-shaped bearing portions 700 at their outer ends for pivotally supporting a rear spring seat member 74 about a horizontal axis.
  • Seat member 74 has trunnions 74a which extend laterally from the sides thereof and are received in bearing portions 70a.
  • a forward spring seat member 76 is also pivotally mounted in the coupler head.
  • Spring means 44 shown in dot-dash, is disposed between seat members 74 and 76 and is under a predetermined amount of initial com-' pression.
  • Seat member 76 is provided with a longitudinally extending shaft or stem 76a which projects through a central opening in seat member 74.
  • Stem 76a is in slidable relationship with member 74 and assures that the ends of spring means 44 will remain in place against its respective seats and that the spring will compress and. expand without bowing or distorting during operation of the mechanism.
  • Lever 42 has an arm 82 extending from hub 6I in the opposite direction from arms 62 and 70.
  • Arm 82 is operatively connected at its upper end to horizontally movable plunger 46 by means of a horizontal trunnion 82a which is received in U-shaped slot 46a at the rear- .ward end of the-plunger.
  • plunger 46 At its forward end plunger 46 tial amount forward of the buffing face 10d of the coupler head.
  • the opposing knuckle of a mating coupler will engage surface 46b of the plunger and urge the plunger rearwardly of the coupler until in the fully coupled position of the couplers surface 46b is approximately in line with buffing face 10d.
  • lever arm 82 inward movement of plunger 46 has caused lever arm 82 to swing rearwardly about pin 60 to the position shown in FIGS. 2, 4 and 9, thereby further compressing spring means 44.
  • lever arm 62 is disposed in such a position that roller-64 spaced a substantial distance forwardly of cam surface 400. This spacing of roller 64 from cam surface 400 is necessary because of the free slack which usually exists between coupled freight car couplers, and assures that unintentional uncoupling of the couplers will not occur.
  • roller 64 continues separation of the couplers causes roller 64 to roll along surface 40c to the position shown in FIG. 6, wherein cam element 40 has been pivoted the amount necessary to fully open the knuckle 12. It will be appreciated that at the end of the uncoupling operation the knuckles of both couplers will be in open position. Moreover, at the conclusion of a coupling operation, with the knuckles closed and locked, the coupler parts will return to the positions shown in FIGS. 1, 2 and 3.
  • the rolling action of roller 64 along surface 400 avoids the frictional resistance that would be created if sliding engagementwere to occur between the end of lever arm 62 and surface 400, as in the aforementioned US. Pat. No. 3,717,26l. It assures that smoother as well as more positive unlocking and opening of the knuckle will occur.
  • Roller. 64 and pin 66 may be made of material such as stainless steel to resist corrosion and to increase the effective service life of those parts.
  • the effective force exerted by the roller to rotate cam element 40 acts at a moment arm m relative to axis of rotor shaft 32.
  • the force of the roller acts at a moment arm m" relative to the axis of rotor shaft 32.
  • Moment arm m" isabout 30 longer than arm m, so that while the force exerted by spring means 44 decreases during the uncoupling operation, this reduction is offset by the increased length of the moment arm at which the spring force is exerted. This assures that adequate torque is available for fully opening the knuckle.
  • a car coupler of the pivoted knuckle type mechanism therein operable for unlocking and opening the knuckle thereof, said mechanism including a rotor shaft member pivoted to the coupler and adapted upon rotation thereof to actuate said mechanism, and automatic means for effecting rotation of said shaft member, said means comprising a cam element keyed to said shaft member for rotation therewith, a lever member pivoted to said coupler, said lever member having means engageable with said element for effecting rotation thereof, said last-named means comprising a roller for rolling engagement with said element, and force exerting means acting against said lever to effect pivotal movement thereof.
  • a car coupler according to claim 2 in which said lever member has another arm to which a plunger member is operatively connected, said plunger member being engageable by an opposing mating coupler to hold said lever in position such that said roller is out of engagement with said cam element when the couplers are in coupled relationship.
  • a car coupler of the pivoted knuckle type mechknuckle thereof, said mechanism including a cam element pivoted to the coupler and adapted upon rotation thereof to actuate said mechanism, and automatic means for effecting rotation of said element
  • said means comprising a lever member pivoted to said coupler, said lever member having roller means engageable with said element for effecting rotation thereof, spring means reacting against lever member for actuating the latter, said lever member having an arm, and a plunger member operatively connected to said arm, said plunger member being engageable by an opposing mating coupler to move said lever member to a position such that said roller means is out of engagement with said element when the couplers are in coupled relationship.
  • a car coupler having a head, a knuckle pivoted to said head and swingable from closed to open position, a lock for said knuckle, a rotor shaft member pivoted to the underside of said head, mechanism within said head operatively connecting said lock and said shaft member whereby upon rotation of said shaft member said lock is moved out of lock relation with said knuckle and the latter is swung from closed to open positon, and means in said head for automatic rotation of said shaft member comprising a cam element keyed to said shaft member, a lever member pivotally mounted within a chamber in said head, said lever member having a roller adapted for engagement with said element to rotate the latter upon actuation of the lever member, spring means for actuating said lever member, and a plunger member in said head operatively connected to said lever member, said plunger member being adapted for engagement by an opposing coupler during a coupling operation to move the plunger member to a position in which said roller is in spaced relation to said element.
  • a car coupler according to claim 6 in which said head has a pair of spaced depending lugs having openings through which said shaft member extends, one of said lugs having a laterally extending hub portion for receiving and supporting said shaft member, an end of said shaft member projecting laterally beyond the side of said hub portion. and said cam element is keyed to said projecting shaft end.
  • a lever member for use in a car coupler to actuate I an associated cam element in the coupler said member said second arm means has a bifurcated end comprising a hub portion for receiving pin means for pivotally mounting the member, first arm means extending from said hub providing bearing means for an associated spring seat, second arm means extending from said hub on the same side thereof as said first arm means and having roller means for engagement with said cam element and third arm means extending from said hub in a direction opposite from said first and second arm means, said third arm means having trunnion means for operative engagement with an associated plunger member in the coupler.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Braking Arrangements (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
US00464355A 1974-04-26 1974-04-26 Railway car coupler Expired - Lifetime US3856154A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US00464355A US3856154A (en) 1974-04-26 1974-04-26 Railway car coupler
IN2785/CAL/1974A IN144628B (pt) 1974-04-26 1974-12-17
GB55020/74A GB1484058A (en) 1974-04-26 1974-12-19 Railway car coupler
GB22762/75A GB1484059A (en) 1974-04-26 1974-12-19 Lever member for use in a railway car coupler
AR257975A AR204856A1 (es) 1974-04-26 1975-01-01 Enganche para vagon de ferrocarril
AU78037/75A AU491479B2 (en) 1974-04-26 1975-02-10 Railway car coupler
ZA00750967A ZA75967B (en) 1974-04-26 1975-02-17 Railway car coupler
BE2054173A BE825910A (fr) 1974-04-26 1975-02-25 Attelage de vehicule ferroviaire
BR1409/74A BR7501409A (pt) 1974-04-26 1975-03-11 Engate de vagao de estrada de ferro do tipo de cotovelo articulado e elemento de alavanca para uso em um engate de vagao de estrada de ferro
CA222,082A CA1024105A (en) 1974-04-26 1975-03-14 Railway car coupler
JP50042155A JPS50141013A (pt) 1974-04-26 1975-04-07
IT22434/75A IT1037331B (it) 1974-04-26 1975-04-17 Aggancio per carro ferroviario
CA288,355A CA1037911A (en) 1974-04-26 1977-10-07 Railway car coupler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00464355A US3856154A (en) 1974-04-26 1974-04-26 Railway car coupler

Publications (1)

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US3856154A true US3856154A (en) 1974-12-24

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ID=23843607

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Application Number Title Priority Date Filing Date
US00464355A Expired - Lifetime US3856154A (en) 1974-04-26 1974-04-26 Railway car coupler

Country Status (10)

Country Link
US (1) US3856154A (pt)
JP (1) JPS50141013A (pt)
AR (1) AR204856A1 (pt)
BE (1) BE825910A (pt)
BR (1) BR7501409A (pt)
CA (1) CA1024105A (pt)
GB (2) GB1484059A (pt)
IN (1) IN144628B (pt)
IT (1) IT1037331B (pt)
ZA (1) ZA75967B (pt)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954211A (en) * 1997-09-10 1999-09-21 Westinghouse Air Brake Company Roller equipped uncoupling cam
US8196762B2 (en) 2008-05-23 2012-06-12 Bedloe Industries Llc Knuckle formed without a finger core
US8201613B2 (en) 2008-05-23 2012-06-19 Bedloe Industries Llc Knuckle formed from pivot pin and kidney core and isolated finger core
US8408406B2 (en) 2008-05-22 2013-04-02 Bedloe Industries Llc Central datum feature on railroad coupler body and corresponding gauges
US8544662B2 (en) 2008-05-22 2013-10-01 Bedloe Industries Llc Central datum feature on railroad coupler body and corresponding gauges
US8662327B2 (en) 2008-05-23 2014-03-04 Bedloe Industries Llc Railway coupler core structure for increased strength and fatigue life of resulting knuckle
US8746473B2 (en) 2008-05-22 2014-06-10 Bedloe Industries Llc Railway coupler body improvements to improve knuckle rotation
US9701323B2 (en) 2015-04-06 2017-07-11 Bedloe Industries Llc Railcar coupler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549022A (en) * 1968-09-27 1970-12-22 Midland Ross Corp Automatic car coupler
US3717261A (en) * 1971-02-17 1973-02-20 Midland Ross Corp Car coupler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549022A (en) * 1968-09-27 1970-12-22 Midland Ross Corp Automatic car coupler
US3717261A (en) * 1971-02-17 1973-02-20 Midland Ross Corp Car coupler

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5954211A (en) * 1997-09-10 1999-09-21 Westinghouse Air Brake Company Roller equipped uncoupling cam
US6000564A (en) * 1997-09-10 1999-12-14 Westinghouse Air Brake Company Roller equipped uncoupling cam
US8408406B2 (en) 2008-05-22 2013-04-02 Bedloe Industries Llc Central datum feature on railroad coupler body and corresponding gauges
US8544662B2 (en) 2008-05-22 2013-10-01 Bedloe Industries Llc Central datum feature on railroad coupler body and corresponding gauges
US8746473B2 (en) 2008-05-22 2014-06-10 Bedloe Industries Llc Railway coupler body improvements to improve knuckle rotation
US8196762B2 (en) 2008-05-23 2012-06-12 Bedloe Industries Llc Knuckle formed without a finger core
US8201613B2 (en) 2008-05-23 2012-06-19 Bedloe Industries Llc Knuckle formed from pivot pin and kidney core and isolated finger core
US8631952B2 (en) 2008-05-23 2014-01-21 Bedloe Industries Llc Knuckle formed without a finger core
US8646631B2 (en) 2008-05-23 2014-02-11 Bedloe Industries, LLC Knuckle formed from pivot pin and kidney core and isolated finger core
US8662327B2 (en) 2008-05-23 2014-03-04 Bedloe Industries Llc Railway coupler core structure for increased strength and fatigue life of resulting knuckle
US9701323B2 (en) 2015-04-06 2017-07-11 Bedloe Industries Llc Railcar coupler
US10532753B2 (en) 2015-04-06 2020-01-14 Bedloe Industries Llc Railcar coupler

Also Published As

Publication number Publication date
IT1037331B (it) 1979-11-10
AU7803775A (en) 1976-08-12
ZA75967B (en) 1976-01-28
GB1484059A (en) 1977-08-24
CA1024105A (en) 1978-01-10
BR7501409A (pt) 1976-11-30
IN144628B (pt) 1978-05-27
GB1484058A (en) 1977-08-24
JPS50141013A (pt) 1975-11-12
AR204856A1 (es) 1976-03-05
BE825910A (fr) 1975-06-16

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