US3774777A - Manual latch retriever assembly for a railway car coupler - Google Patents
Manual latch retriever assembly for a railway car coupler Download PDFInfo
- Publication number
- US3774777A US3774777A US00189941A US3774777DA US3774777A US 3774777 A US3774777 A US 3774777A US 00189941 A US00189941 A US 00189941A US 3774777D A US3774777D A US 3774777DA US 3774777 A US3774777 A US 3774777A
- Authority
- US
- United States
- Prior art keywords
- latch member
- latch
- lever
- rod
- casing
- 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
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G1/00—Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means
- B61G1/32—Couplings comprising interengaging parts of different shape or form and having links, bars, pins, shackles, or hooks as coupling means with horizontal bolt or pin
-
- 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
Definitions
- each of the mating heads carries a coupling pin that is engaged by the latch member on the other mating head when coupling action takes place.
- Each of the coupling pins has a notch formed thereon and into which respective latch members are biased for securing the mating heads in a coupled relation.
- Each of the mating heads also carries a power-operated device, such as a fluid pressure operated piston device, which, when actuated in anticipation of uncoupling action, delivers a hammer blow to the respective latch member for dislodging said latch member from the notch on the pin and then holding the latch member in such disengaged status against the biasing action thereon until the cars are moved apart.
- a power-operated device such as a fluid pressure operated piston device
- the power-operated devices have been known to fail to operate, or in some instances, the hammer blow delivered thereby to the latch member is not heavy enough to effect dislodgement of the latch member.
- the present invention seeks to provide means for use with automatic car couplers of the type wherein the coupling pin is secured in a coupled condition by a latch member biased into engagement therewith and released therefrom by power-operated means, whereby said latch member may be retrieved from said engagement with the coupling pin in a minimum of time and by a single manual motion.
- the invention comprises a rod member having an inner end fixed to the latch member of the automatic coupler and extending axially therefrom so that the other or outer end of said rod member is situated beyond the exterior limits of the coupler casing, said outer end being pivotally connected between the ends of a lever which is fulcrumed at one end against the side of the casing and provided with a hand grip at the other end.
- said latch member may be positively disengaged,
- the fulcrumed end of the lever is not fixed to the side of the casing but slides thereagainst as the lever rotates. Stop means are provided to limit rotation of the lever to less than 90 and therefore prevent movement of the fulcrumed end thereof over the dead center point.
- FIG. 1 is a fragmentary elevational view, in section, of a mating head of an automatic car coupler embodying the invention looking toward the rear thereof when in its suspended position on the car;
- FIG. 2 is a fragmentary elevational view, in outline, of certain components of the mating head shown in FIG. 1 as viewed from the left thereof;
- FIG. 3 is a fragmentary elevational view, in outline of the components shown in FIG. 2 with certain modifications;
- FIG. 4 is a fragmentary elevational view, mostly in section, showing the components shown in FIG. 2 in an operated position and as viewed in FIG. 1, and,
- FIG. 5 is a partially sectioned plan view of the mating head shown in FIG. 1, as viewed from the bottom thereof, in coupled relationship with a counterpart mating head.
- the reference numeral 1 generally designates a fragmentary portion of a mating head which with a counterpart mating head 1 comprises an automatic car coupler, said mating heads each comprising a casing 2 by which the mating head is suspended, by suitable means not shown, at the end of a draft gear of a railway vehicle, neither of which is shown.
- Each of the mating heads also comprises-a coupling pin 33 (see FIG. 5) projecting horizontally therefrom parallel to the longitudinal axis of the car and offset to one side of the vertical center line of the mating head.
- the respective couplingpins are. engaged by theoppositerespective matingheads. Since both mating heads are identical in structure, any operational description set forth hereinafter will be described in connection with one mating head only, it being understood that the other mating head functions in similar manner.
- the coupling pin 33 carried by one mating head 1 is engaged by the other mating head 1 by entering an aligned opening 3 in the facing side of said mating head 1.
- the leading end or nose of the'coupling pin 33 is tapered so that,
- a poweroperated piston device 1 l is mounted in the casing 2 in axial alignment with the latch member 5 and comprises a cylinder portion 12 in which a fluid pressure responsive piston 13 is reciprocably operable (see FIG. 1).
- a hollow cylindrical striking member l4 is secured to and extends coaxially from a non-pressure side of piston 13 so as to be disposed in axial alignment between said piston and the outer side of the bottom of cup-like portion 6 of the latch member 5.
- piston 13 when piston 13 is subjected to a sudden burst of fluid pressure on a pressure side (not shown) opposite the non-pressure side 15, said piston is moved leftwardly out of a normal position, as viewed in the drawing, with such rapidity and force as to cause the striking member 14 to come into contact with the bottom of cup-like portion 6 of the latch member 5 and thereby deliver thereto a hammerlike blow for effecting movement thereof in a leftwardly direction to an unlatching position in which spur 4 is dislodged from the notch 34 in the coupling pin 33.
- the piston device 11 is provided with a choked release valve (not shown) for maintaining the effect of fluid pressure acting on the pressure side of piston 13 and therefore maintaining the latch member 5 in its unlatching position relative to the coupling pin 33 for a certain period of time considered sufficient for completing the uncoupling movement of the cars.
- a choked release valve (not shown) for maintaining the effect of fluid pressure acting on the pressure side of piston 13 and therefore maintaining the latch member 5 in its unlatching position relative to the coupling pin 33 for a certain period of time considered sufficient for completing the uncoupling movement of the cars.
- manually operable means in accordance with the invention, are provided to effect said dislodgement of said spur from the coupling pin.
- a rod 17 has an inner end secured concentrically to a retaining member 18 resting against the 'outer side of the bottom of cup-like portion 6 of the latch member 5 said retaining member having a flange portion against which the adjacent end of spring 16 rests for exerting a biasing effect therethrough on said latch member, as above noted.
- Rod 17 extends coaxially from retaining member 18 through a concentric opening 19 in the bottom of cup-like portion 6, through the cup-like portion, through the spring seat 9, and through an opening 20 formed in the side wall 10 of casing 2 with the other or outer end of said rod disposed exteriorly of said casing. As may be seen in both FIGS.
- the outer end of rod 17 is pivotally secured by a pin 21 between two free ends of a lever 22.
- One end of lever 22 has a finger pull or grip 23 formed thereon, while an opposite end 24 of said lever acts as a fulcrum in a manner to be hereinafter set forth.
- the biasing effect of spring 8 in a rightwardly direction, as viewed in FIG. 1, on latch member 8 and consequently on rod 17 normally holds lever 22 snugly against the outer surface of sidewall 10.
- the lower portion of lever 22 is in the form of a yolk 25 to accommodate rod 17 therein as said lever is rotated and said rod is extended out of casing 2.
- a cross member 26 is'fixed across the arms of the yolk 25 adjacent said fulcrum end.
- the cross member 26 comes into contact with said rod, as best seen in FIG. 4, to prevent rotation of the lever through the 90 angle and, therefore, prevent fulcrum end 24 from sliding through the dead center point lying in the axis of rod 17.
- a hasp 27 is hinged at one end to the side wall by a pin 28 inserted transversely through aligned holes formed in said one end of said hasp and in a hinge member 29 secured to said side wall.
- hasp 27 is secured in a restraining position by rotating the hasp about its hinged end so that it extends transversely across the front of said lever and may be secured in said restraining position by a pin 30 inserted transversely through aligned holes formed in bifurcated end 31 of said hasp opposite said'hinged end and in a staple member 32 conveniently positionally secured on the side wall 10 so as to be straddled by the bifurcated end of the hasp.
- Pin 30, may be removed to allow movement of the hasp out of its restraining position to an inoperative position in which lever 22 may then be manually operated, as above described for releasing latch member 5.
- a manually operable latch retriever assembly for use with an automatic railway car coupler of the type having a coupling pin carried on one mating head of the coupler and engageable by a counterpart mating head in a locked relation for locking the mating heads in coupled relation, and power-operated means for effecting unlocking of the mating heads prior to uncoupling thereof, said manually operable latch retriever assembly comprising the combination of:
- a latch member disposed in said casing and including spring means for axially biasing the latch member in one direction into a latching position in which said coupling pin is engaged and locked against movement relative to said casing;
- a lever member connected to said other end of said rod member and being operable out of a normal position, in which said rod member is in its said normal position, for-manually effecting axial movement of said rod member and consequently of said latch member in a direction opposite to said one direction to an unlatching position in which said coupling pin is unlocked and free for movement relative to said casing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18994171A | 1971-10-18 | 1971-10-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3774777A true US3774777A (en) | 1973-11-27 |
Family
ID=22699399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00189941A Expired - Lifetime US3774777A (en) | 1971-10-18 | 1971-10-18 | Manual latch retriever assembly for a railway car coupler |
Country Status (2)
Country | Link |
---|---|
US (1) | US3774777A (en) |
JP (1) | JPS5143646B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341544A1 (en) * | 1988-05-10 | 1989-11-15 | Bergische Stahl-Industrie | Quick-release device for close couplings |
US20070114199A1 (en) * | 2005-11-18 | 2007-05-24 | Sharma & Associates | Automatic cut lever apparatus |
US11801877B1 (en) * | 2020-11-23 | 2023-10-31 | Rodney W. Balke | Railcar ant-scissoring system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1614516A (en) * | 1924-01-31 | 1927-01-18 | Nat Malleable & Steel Castings | Car coupler |
US1904171A (en) * | 1925-10-06 | 1933-04-18 | Nat Malleable & Steel Castings | Car coupler |
US2408653A (en) * | 1943-07-30 | 1946-10-01 | American Steel Foundries | Coupler |
US2940610A (en) * | 1955-07-18 | 1960-06-14 | Nat Malleable & Steel Castings | Car coupler |
US3491899A (en) * | 1967-08-28 | 1970-01-27 | Dresser Ind | Fluid-operated uncoupling mechanism |
-
1971
- 1971-10-18 US US00189941A patent/US3774777A/en not_active Expired - Lifetime
-
1972
- 1972-10-18 JP JP47103697A patent/JPS5143646B2/ja not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1614516A (en) * | 1924-01-31 | 1927-01-18 | Nat Malleable & Steel Castings | Car coupler |
US1904171A (en) * | 1925-10-06 | 1933-04-18 | Nat Malleable & Steel Castings | Car coupler |
US2408653A (en) * | 1943-07-30 | 1946-10-01 | American Steel Foundries | Coupler |
US2940610A (en) * | 1955-07-18 | 1960-06-14 | Nat Malleable & Steel Castings | Car coupler |
US3491899A (en) * | 1967-08-28 | 1970-01-27 | Dresser Ind | Fluid-operated uncoupling mechanism |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0341544A1 (en) * | 1988-05-10 | 1989-11-15 | Bergische Stahl-Industrie | Quick-release device for close couplings |
US20070114199A1 (en) * | 2005-11-18 | 2007-05-24 | Sharma & Associates | Automatic cut lever apparatus |
US7562781B2 (en) * | 2005-11-18 | 2009-07-21 | Kandoth-Kannoth Harish K | Automatic cut lever apparatus |
US11801877B1 (en) * | 2020-11-23 | 2023-10-31 | Rodney W. Balke | Railcar ant-scissoring system |
Also Published As
Publication number | Publication date |
---|---|
JPS5143646B2 (en) | 1976-11-24 |
JPS4857313A (en) | 1973-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BANKERS TRUST COMPANY, NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:U.S. RAILWAY INC.;REEL/FRAME:004905/0255 Effective date: 19880624 Owner name: BANKERS TRUST COMPANY, 4 ALBANY STREET, 9TH FLOOR Free format text: SECURITY INTEREST;ASSIGNOR:U.S. RAILWAY INC.;REEL/FRAME:004905/0255 Effective date: 19880624 Owner name: BANKERS TRUST COMPANY Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN STANDARD INC., A DE. CORP.,;REEL/FRAME:004905/0035 Effective date: 19880624 |
|
AS | Assignment |
Owner name: AMERICAN STANDARD INC., A CORP. OF DE Free format text: MERGER;ASSIGNOR:WESTINGHOUSE AIR BRAKE COMPANY;REEL/FRAME:005237/0256 Effective date: 19781219 |
|
AS | Assignment |
Owner name: RAILWAY INC., NEW YORK Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY;REEL/FRAME:005252/0828 Effective date: 19900309 Owner name: AMERICAN STANDARD INC., NEW YORK Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BANKERS TRUST COMPANY;REEL/FRAME:005252/0780 Effective date: 19900309 |
|
AS | Assignment |
Owner name: CHASE MANHATTAN BANK (NATIONAL ASSOCIATION), THE Free format text: SECURITY INTEREST;ASSIGNOR:RAIL ACQUISITION CORP.;REEL/FRAME:005323/0831 Effective date: 19900309 |
|
AS | Assignment |
Owner name: WESTINGHOUSE AIR BRAKE COMPANY, AIR BRAKE AVENUE, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN STANDARD INC., A DE CORP.;REEL/FRAME:005648/0269 Effective date: 19900307 |