CA1039683A - Coupler - Google Patents
CouplerInfo
- Publication number
- CA1039683A CA1039683A CA251,434A CA251434A CA1039683A CA 1039683 A CA1039683 A CA 1039683A CA 251434 A CA251434 A CA 251434A CA 1039683 A CA1039683 A CA 1039683A
- Authority
- CA
- Canada
- Prior art keywords
- coupler
- shelf
- top shelf
- rib
- pads
- 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
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- Details Of Rigid Or Semi-Rigid Containers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An improved type "E" railway coupler with a top and bottom shelf is provided for reducing the possibility of derail-ments of railroad cars caused by accidental disengagement of interlocking couplers. The improved coupler has a top planar surface for fixedly carrying the top shelf and has a bottom planar surface for fixedly carrying the bottom shelf. The top shelf includes an upper abutment surface limiting the upward vertical movement of a mating coupler and has a set of down-wardly-extending coplanar pads seated upon the top planar sur-face. The bottom shelf includes a lower abutment surface limiting the bottom vertical movement of a mating coupler and has a set of upwardly-extending coplanar pads positioned against the bottom planar surface.
An improved type "E" railway coupler with a top and bottom shelf is provided for reducing the possibility of derail-ments of railroad cars caused by accidental disengagement of interlocking couplers. The improved coupler has a top planar surface for fixedly carrying the top shelf and has a bottom planar surface for fixedly carrying the bottom shelf. The top shelf includes an upper abutment surface limiting the upward vertical movement of a mating coupler and has a set of down-wardly-extending coplanar pads seated upon the top planar sur-face. The bottom shelf includes a lower abutment surface limiting the bottom vertical movement of a mating coupler and has a set of upwardly-extending coplanar pads positioned against the bottom planar surface.
Description
~39683 This invention relates to railway couplers, and more particularly, to an improved type "E" coupler, with a top and bottom shelf.
In the past, there have been several serious wrecks on railroads involving tank cars with standard American Association of Railroads (AAR) type "E" couplers. In some cases the tank cars have carried hazardous materials which have exploded during the wreck causing loss of property and lives. During normal movement of railroad cars, the standard type "E" coupler will ride up and down on a mating coupler. The United States Depart-ment of Transportation, however, has claimed that during derail-mènt the standard type "E" coupler will ride up and over the ~-mating coupler and puncture the tank car.
Because the standard type "E" coupler has provided many decades of useful service for American railroads, attempts have been made to modify the "E" coupler to prevent the coupler from riding up and over its mating coupler during movement of the cars. The standard "E" coupler has been modified to include an integral top shelf and/or bottom shelf. The shelves limit the vertical movement of the mating coupler. Unfortunately, a stand-ard "E" coupler with integral top and bottom shelves is not uni- ~i-versally adaptable when top and bottom shelves are not wanted or considered necessary for other types of railway usage not involv-ing tank cars carrying hazardous material.
Separable top and bottom shelves have been manufactured and selectively welded to the standard "E" coupler for use with tank cars carrying hazardous materials. Such separable shelves permit use of the standard "E" coupler without the shelves for railway usage not involving tank cars carrying hazardous materials.
The separable cast top and bottom shelves are contoured to fit the existing standard "E" coupler. Unfortunately, however, it is very difficult and expensive to hold the dimensional tolerances re-quired for such a contoured casting.
. .
`" 1~39683 It is an object of this invention to provide an improved coupler assembly which lessens the risk of derailments and tank car wrecks.
Another object of the invention is to provide an improved coupler unit which will prevent a mating coupler associated therewith from slipping out of engagement when forces tend to create excessive relative vertical movement between the two couplers.
It is still another obiect of this invention to simplify the design and construction of the top and bottom shelf so as to reduce manufacturing costs without sacrificing the safety features of the shelf.
There is provided by virtue of this invention a rail-way coupler assembly including a top hooded shelf member for limiting vertical movement of a second coupler in engagement therewith, comprising, in combination, a modified Type "E"
coupler having upper rib means added to the top of the coupler to modify the irregular contour thereof at the location of the top shelf, the upper rib means defining a horizontal planar coupler top surface, a hooded top shelf formed with a plurality of downwardly projecting top shelf pads formed on the underside thereof, the top shelf pads having flat coplanar bottom surfaces, and the top shelf being positioned with the top shelf pads seated flat against the horizontal planar coupler top surface and the top shelf being welded to the coupler top surface.
The foregoing and other objects and advantages will be apparent from the following description and appended claims, taken in conjunction with the accompanying drawin~s.
Figure 1 is a knuckle side view in elevation of a coupler with a top and bottom shelf in accordance with principles of the present invention and showing fragmentary portions of the top and bottom shelves in cross-section;
:{ s~ - 2 -`` 1~39683 Figure 2 ls a top plan view of Figure l;
Figure 3 is a front view in elevation of Figure l;
Figure 4 is a bottom plan view of Figure 1;
Figure 5 is an enlarged exploded knuckle side view of a fragmentary section of the top shelf with a set of coupler- -engaging pads and a fragmentary section of the coupler with a top surface rib;
Figure 6 is a front view in elevation of Figure 5;
Figure 7 is a guard arm side view in elevation of :
Figure 5;
Figure 8 is an enlarged exploded knuckle side view of a fragmentary section of the bottom shelf with a set of coupler-engaging pads and a fragmentary section of the coupler with a bottom surface rib; -Figure 9 is a front view of the enlarged portion of .
Figure 8, and .
Figure 10 is a guard arm side view of the enlarged portion of Figure 8.
:.' :
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- 3 - .
:, ' . . .. ~ . ~ .. :: : : . .: .
~39683 Referring now to the drawings wherein like reference characters in the several views indicate similar parts a coupler assemblv 10 is shown for use on a railway car and particularly on a railway tank car carrying hazardous material. The coupler assembly 10 includes a modified "E" coupler 12 having secured thereto a top safety shelf 14 and a bottom safety shelf 16.
Much of the modified coupler 12 is conventional and common to the standard AAR type "E" coupler. For example, an elongated shank 18 extends rearwardly toward the railway car and is integral with a guard arm 20 and a knuckle tail wall 22.
Extending above the shank 18 and located between the guard arm 20 and knuckle tail wall 22, is a horn 24 with a lock chamber 26 having a rearward lock rib 28 defining a top lock lift hole 30.
The guard arm 20 has a guard arm nose 32 and a guard arm face 34 defining a lock wall 36. The guard arm face 34 is adjacent a front face 37 of the modified coupler 12.
Referring to the knuckle side 82 of coupler 12, knuckle tail wall 22 is connected to an upper pivot lug 38 and a lower pivot lug 40. Extending downward from the upper pivot lug 38 is an upper pin protector 42 which defines an upper pivot pin hole 44. A lower pin protector 46 extends upward from the lower pivot lug 40 and defines a lower pivot pin hole 48. Pivot pin holes 44 and 48 receive a vertical knuckle pivot pin (not shown) for con-necting a coupler knuckle 50. Coupler knuckle 50 has a pulling face 52 which faces the guard arm face 34 and the railwav car.
The coupler knuckle 50 further defines a flag hole 54 and a for-ward face 56 opposite the pulling face 52.
Beneath the shank 18 is a lock hole wall 58 defining a lock hole 60. A rotary shaft wall 62 is connected to the lock hole wall 58 and is ad~acent a rotary shaft 63. The bottom walls of coupler 12 define a drain hole 64 and a thrower hole 66. An articulated lock lift assembly 68 is connected to the bottom of the coupler 12.
A rearward lock rib 70 (see drawing) extends from the top of coupler 12 and is disposed adjacent a flat rearward sur-face 72. The improved structure of the modified coupler 12 in-cludes an upper-shelf rib 74 defining a flat front top surface 74A positioned in coplanar relationship with the flat rearward surface 72 for receiving the top shelf 14. The upper-shelf rib 74 is formed with a contoured lower surface substantially com-plementary to the contoured surface 75 of the coupler casting.
The improved structure of modified coupler 12 further includes a lower-shelf rib 76 defining a flat rearward bottom surface 76A
positioned in cop~anar relationship with a forward flat bottom section 78 for receiving the bottom shelf 16. As best shown in Figure 3, the lower-shelf rib 76 includes a knuckle-side exten-sion or section 80 extending downward from the lower pivot lug 40 and positioned on the knuckle side 82 of the modified coupler 12.
The top shelf 14 ha~ rearward wall 84 positioned oppo-site a forward wall having a forward abutment surface 86. The top shelf 14 is shaped to define a top hood covering the flat rearward surface 72 and the upper-shelf rib 74 of the modified coupler 12 and extends forward and above the front face 37 of the coupler without contacting the pulling face 52 of the coupler knuckle 50. The top shelf 14 includes an upper wall defining an upper abutment surface 88 which prevents a mating coupler (not -shown) from riding up and over the modified coupler 12 and punc-turing a tank car which may be carrying hazardous material.
During normal usage, the upper abutment surface 88 will not usually come in contact with the mating coupler and serves merely as a safety structure for preventing accidents and pos-sible derailments. In the illustrative embodiment, the upper abutment surface 88 is positioned a predetermined distance, a~ove -~03968~
the upper-shelf rib 74 of coupler 12. Extending rearward from the top shelf 14 is a rearward knuckle rib 90 and a rearward guard arm rib 92, as best shown in Figure 2. Connected to the rearward knuckle rib 90 is a front knuckle rib 94. Connected to the rear-ward guard arm rib 92 is a front guard arm rib 96. The top shelf 14 is secured to the modified coupler 12 by welding the bottom of the top shelf at weld positions 98 to the flat rearward surface 72 and the upper-shelf rib 74 of the coupler.
The bottom shelf 16 has a tapered bottom section 100 and a front lower-shelf pivot lug face 102. The bottom shelf is shaped to define a bottom hood covering the lower-shelf rib 76 of the modified coupler 12 and extending forward and below the front face 37 of the coupler. A lower abutment surface 104 is a safety feature designed to hold the mating coupler in the event the mat-ing coupler fails. During normal usage, the lower abutment sur-face will not normally come in contact with the mating coupler, but merely serves as a safety feature to prevent accidents and possible derailments. In the illustrative embodiment, the lower abutment surface 104 is positioned a predetermined distance, below the modified coupler 12. The bottom shelf 16 is secured to the bottom of the coupler 12 by welding the bottom shelf along lower weld positions 106 to the lower-shelf rib 76 of the coupler.
As best shown in Figure 4, the bottom shelf 16 further includes a knuckle rib 108 positioned between a front rib 110 and a guard arm rib 112.
Referring to Figures 5-7, the rearward knuckle rib 90 of the top shelf 14 has a downwardly-extending rearward knuckle pad 114. The rearward guard arm rib 92 has a downwardly-extend-ing rearward guard arm pad 116. A front knuckle pad 118 extends downward from the front knuckle rib 94 and a front guard arm flange extends downward from the front guard arm rib 96. Each of the pads have chamfered vertical side walls and together form ~'~39683 a set of pads with flat bottom surfaces positioned in coplanar relationship to each other for seating upon the flat rearward surface 72 and the upper-shelf rib 74 of the modified coupler 12.
In the illustrative embodiment, each of the flanges protrude about one-eighth inch beneath the bottom of the top shelf 14.
Referring to Figures 8-10, the knuckle rib 108 of the bottom shelf 16 has an upwardly-extending knuckle pad 122 and the front rib 110 has an upwardly-extending front pad 124. A guard arm pad 126 extends upward from the guard arm rib 112. The up-wardly-extending pads form a second set of pads with flat top surfaces positioned in coplanar relationship to each other for abutting the lower-shelf rib 76 of the modified coupler 12. In the illustrative embodiment, each of the flanges extend about one-eighth inch above the bottom shelf 16.
In operation, the second coupler is permitted to move along a vertical path between the upper abutment surfac~ 88 and the lower abutment surface 104 when positioned in interlocking engagement with the modified "E" coupler 12.
My improved coupler assembly 10 is particularly useful -for tank cars carrying hazardous materials, such as highly flam- -~
mable material or pressurized combustible gas, and may be used for other types of railway cars. For usage other than with tank cars carrying hazardous material, it may be desirable to use the modified coupler 12 without the top and bottom shelves 14 and 16.
For some railway usage, the modified coupler may have the top shelf fixedly secured thereto with the bottom shelf omitted.
Alternatively, the modified coupler may have the bottom shelf secured thereto with the top shelf omitted.
It will be apparent that this invention advantageously -~
provides an improved "E" type coupler to which top and/or bottom shelves may be easily attached. By modifying the contour of the coupler head in the manner indicated top and/or bottom shelves . ~ - .
1~3~3683 may be easily added either at the time or original manufacture or some time subsequently. The design of the top and bottom shelves is itself simplified and the difficult matching of contours on the coupler head and shelves is eliminated.
It will be appreciated that numerous changes and modi-fications can be made to the embodiment shown herein without departing from the spirit and scope of this invention.
In the past, there have been several serious wrecks on railroads involving tank cars with standard American Association of Railroads (AAR) type "E" couplers. In some cases the tank cars have carried hazardous materials which have exploded during the wreck causing loss of property and lives. During normal movement of railroad cars, the standard type "E" coupler will ride up and down on a mating coupler. The United States Depart-ment of Transportation, however, has claimed that during derail-mènt the standard type "E" coupler will ride up and over the ~-mating coupler and puncture the tank car.
Because the standard type "E" coupler has provided many decades of useful service for American railroads, attempts have been made to modify the "E" coupler to prevent the coupler from riding up and over its mating coupler during movement of the cars. The standard "E" coupler has been modified to include an integral top shelf and/or bottom shelf. The shelves limit the vertical movement of the mating coupler. Unfortunately, a stand-ard "E" coupler with integral top and bottom shelves is not uni- ~i-versally adaptable when top and bottom shelves are not wanted or considered necessary for other types of railway usage not involv-ing tank cars carrying hazardous material.
Separable top and bottom shelves have been manufactured and selectively welded to the standard "E" coupler for use with tank cars carrying hazardous materials. Such separable shelves permit use of the standard "E" coupler without the shelves for railway usage not involving tank cars carrying hazardous materials.
The separable cast top and bottom shelves are contoured to fit the existing standard "E" coupler. Unfortunately, however, it is very difficult and expensive to hold the dimensional tolerances re-quired for such a contoured casting.
. .
`" 1~39683 It is an object of this invention to provide an improved coupler assembly which lessens the risk of derailments and tank car wrecks.
Another object of the invention is to provide an improved coupler unit which will prevent a mating coupler associated therewith from slipping out of engagement when forces tend to create excessive relative vertical movement between the two couplers.
It is still another obiect of this invention to simplify the design and construction of the top and bottom shelf so as to reduce manufacturing costs without sacrificing the safety features of the shelf.
There is provided by virtue of this invention a rail-way coupler assembly including a top hooded shelf member for limiting vertical movement of a second coupler in engagement therewith, comprising, in combination, a modified Type "E"
coupler having upper rib means added to the top of the coupler to modify the irregular contour thereof at the location of the top shelf, the upper rib means defining a horizontal planar coupler top surface, a hooded top shelf formed with a plurality of downwardly projecting top shelf pads formed on the underside thereof, the top shelf pads having flat coplanar bottom surfaces, and the top shelf being positioned with the top shelf pads seated flat against the horizontal planar coupler top surface and the top shelf being welded to the coupler top surface.
The foregoing and other objects and advantages will be apparent from the following description and appended claims, taken in conjunction with the accompanying drawin~s.
Figure 1 is a knuckle side view in elevation of a coupler with a top and bottom shelf in accordance with principles of the present invention and showing fragmentary portions of the top and bottom shelves in cross-section;
:{ s~ - 2 -`` 1~39683 Figure 2 ls a top plan view of Figure l;
Figure 3 is a front view in elevation of Figure l;
Figure 4 is a bottom plan view of Figure 1;
Figure 5 is an enlarged exploded knuckle side view of a fragmentary section of the top shelf with a set of coupler- -engaging pads and a fragmentary section of the coupler with a top surface rib;
Figure 6 is a front view in elevation of Figure 5;
Figure 7 is a guard arm side view in elevation of :
Figure 5;
Figure 8 is an enlarged exploded knuckle side view of a fragmentary section of the bottom shelf with a set of coupler-engaging pads and a fragmentary section of the coupler with a bottom surface rib; -Figure 9 is a front view of the enlarged portion of .
Figure 8, and .
Figure 10 is a guard arm side view of the enlarged portion of Figure 8.
:.' :
~'' ''.-.' '' .
- 3 - .
:, ' . . .. ~ . ~ .. :: : : . .: .
~39683 Referring now to the drawings wherein like reference characters in the several views indicate similar parts a coupler assemblv 10 is shown for use on a railway car and particularly on a railway tank car carrying hazardous material. The coupler assembly 10 includes a modified "E" coupler 12 having secured thereto a top safety shelf 14 and a bottom safety shelf 16.
Much of the modified coupler 12 is conventional and common to the standard AAR type "E" coupler. For example, an elongated shank 18 extends rearwardly toward the railway car and is integral with a guard arm 20 and a knuckle tail wall 22.
Extending above the shank 18 and located between the guard arm 20 and knuckle tail wall 22, is a horn 24 with a lock chamber 26 having a rearward lock rib 28 defining a top lock lift hole 30.
The guard arm 20 has a guard arm nose 32 and a guard arm face 34 defining a lock wall 36. The guard arm face 34 is adjacent a front face 37 of the modified coupler 12.
Referring to the knuckle side 82 of coupler 12, knuckle tail wall 22 is connected to an upper pivot lug 38 and a lower pivot lug 40. Extending downward from the upper pivot lug 38 is an upper pin protector 42 which defines an upper pivot pin hole 44. A lower pin protector 46 extends upward from the lower pivot lug 40 and defines a lower pivot pin hole 48. Pivot pin holes 44 and 48 receive a vertical knuckle pivot pin (not shown) for con-necting a coupler knuckle 50. Coupler knuckle 50 has a pulling face 52 which faces the guard arm face 34 and the railwav car.
The coupler knuckle 50 further defines a flag hole 54 and a for-ward face 56 opposite the pulling face 52.
Beneath the shank 18 is a lock hole wall 58 defining a lock hole 60. A rotary shaft wall 62 is connected to the lock hole wall 58 and is ad~acent a rotary shaft 63. The bottom walls of coupler 12 define a drain hole 64 and a thrower hole 66. An articulated lock lift assembly 68 is connected to the bottom of the coupler 12.
A rearward lock rib 70 (see drawing) extends from the top of coupler 12 and is disposed adjacent a flat rearward sur-face 72. The improved structure of the modified coupler 12 in-cludes an upper-shelf rib 74 defining a flat front top surface 74A positioned in coplanar relationship with the flat rearward surface 72 for receiving the top shelf 14. The upper-shelf rib 74 is formed with a contoured lower surface substantially com-plementary to the contoured surface 75 of the coupler casting.
The improved structure of modified coupler 12 further includes a lower-shelf rib 76 defining a flat rearward bottom surface 76A
positioned in cop~anar relationship with a forward flat bottom section 78 for receiving the bottom shelf 16. As best shown in Figure 3, the lower-shelf rib 76 includes a knuckle-side exten-sion or section 80 extending downward from the lower pivot lug 40 and positioned on the knuckle side 82 of the modified coupler 12.
The top shelf 14 ha~ rearward wall 84 positioned oppo-site a forward wall having a forward abutment surface 86. The top shelf 14 is shaped to define a top hood covering the flat rearward surface 72 and the upper-shelf rib 74 of the modified coupler 12 and extends forward and above the front face 37 of the coupler without contacting the pulling face 52 of the coupler knuckle 50. The top shelf 14 includes an upper wall defining an upper abutment surface 88 which prevents a mating coupler (not -shown) from riding up and over the modified coupler 12 and punc-turing a tank car which may be carrying hazardous material.
During normal usage, the upper abutment surface 88 will not usually come in contact with the mating coupler and serves merely as a safety structure for preventing accidents and pos-sible derailments. In the illustrative embodiment, the upper abutment surface 88 is positioned a predetermined distance, a~ove -~03968~
the upper-shelf rib 74 of coupler 12. Extending rearward from the top shelf 14 is a rearward knuckle rib 90 and a rearward guard arm rib 92, as best shown in Figure 2. Connected to the rearward knuckle rib 90 is a front knuckle rib 94. Connected to the rear-ward guard arm rib 92 is a front guard arm rib 96. The top shelf 14 is secured to the modified coupler 12 by welding the bottom of the top shelf at weld positions 98 to the flat rearward surface 72 and the upper-shelf rib 74 of the coupler.
The bottom shelf 16 has a tapered bottom section 100 and a front lower-shelf pivot lug face 102. The bottom shelf is shaped to define a bottom hood covering the lower-shelf rib 76 of the modified coupler 12 and extending forward and below the front face 37 of the coupler. A lower abutment surface 104 is a safety feature designed to hold the mating coupler in the event the mat-ing coupler fails. During normal usage, the lower abutment sur-face will not normally come in contact with the mating coupler, but merely serves as a safety feature to prevent accidents and possible derailments. In the illustrative embodiment, the lower abutment surface 104 is positioned a predetermined distance, below the modified coupler 12. The bottom shelf 16 is secured to the bottom of the coupler 12 by welding the bottom shelf along lower weld positions 106 to the lower-shelf rib 76 of the coupler.
As best shown in Figure 4, the bottom shelf 16 further includes a knuckle rib 108 positioned between a front rib 110 and a guard arm rib 112.
Referring to Figures 5-7, the rearward knuckle rib 90 of the top shelf 14 has a downwardly-extending rearward knuckle pad 114. The rearward guard arm rib 92 has a downwardly-extend-ing rearward guard arm pad 116. A front knuckle pad 118 extends downward from the front knuckle rib 94 and a front guard arm flange extends downward from the front guard arm rib 96. Each of the pads have chamfered vertical side walls and together form ~'~39683 a set of pads with flat bottom surfaces positioned in coplanar relationship to each other for seating upon the flat rearward surface 72 and the upper-shelf rib 74 of the modified coupler 12.
In the illustrative embodiment, each of the flanges protrude about one-eighth inch beneath the bottom of the top shelf 14.
Referring to Figures 8-10, the knuckle rib 108 of the bottom shelf 16 has an upwardly-extending knuckle pad 122 and the front rib 110 has an upwardly-extending front pad 124. A guard arm pad 126 extends upward from the guard arm rib 112. The up-wardly-extending pads form a second set of pads with flat top surfaces positioned in coplanar relationship to each other for abutting the lower-shelf rib 76 of the modified coupler 12. In the illustrative embodiment, each of the flanges extend about one-eighth inch above the bottom shelf 16.
In operation, the second coupler is permitted to move along a vertical path between the upper abutment surfac~ 88 and the lower abutment surface 104 when positioned in interlocking engagement with the modified "E" coupler 12.
My improved coupler assembly 10 is particularly useful -for tank cars carrying hazardous materials, such as highly flam- -~
mable material or pressurized combustible gas, and may be used for other types of railway cars. For usage other than with tank cars carrying hazardous material, it may be desirable to use the modified coupler 12 without the top and bottom shelves 14 and 16.
For some railway usage, the modified coupler may have the top shelf fixedly secured thereto with the bottom shelf omitted.
Alternatively, the modified coupler may have the bottom shelf secured thereto with the top shelf omitted.
It will be apparent that this invention advantageously -~
provides an improved "E" type coupler to which top and/or bottom shelves may be easily attached. By modifying the contour of the coupler head in the manner indicated top and/or bottom shelves . ~ - .
1~3~3683 may be easily added either at the time or original manufacture or some time subsequently. The design of the top and bottom shelves is itself simplified and the difficult matching of contours on the coupler head and shelves is eliminated.
It will be appreciated that numerous changes and modi-fications can be made to the embodiment shown herein without departing from the spirit and scope of this invention.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A railway coupler assembly including a top hooded shelf member for limiting vertical movement of a second coupler in engagement therewith, comprising, in combination, a modified Type "E" coupler having upper rib means added to the top of the coupler to modify the irregular contour thereof at the location of the top shelf, said upper rib means defining a horizontal planar coupler top surface, a hooded top shelf formed with a plurality of downwardly projecting top shelf pads formed on the underside thereof, said top shelf pads having flat coplanar bottom surfaces, and said top shelf being positioned with said top shelf pads seated flat against said horizontal planar coupler top surface and said top shelf being welded to said coupler top surface.
2. A railway coupler assembly as defined in claim 1 where at least three downwardly projecting pads are formed on the underside of said top shelf in substantially spaced relation to one another.
3. A railway coupler assembly as defined in claim 1 where said top shelf comprises a rearward knuckle rib having a first pad formed thereon, a rear guard arm rib having a second pad formed thereon, a front knuckle rib having a third pad formed thereon and a front guard arm rib having a fourth pad formed thereon, said top shelf pads projecting downwardly from the underside of said top shelf and having flat bottom surfaces which are coplanar for seating against said coupler top surface.
4. A railway coupler assembly as defined in claim 3 wherein the pads formed on said top shelf project downwardly approximately one-eighth inch from the underside thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59576675A | 1975-07-14 | 1975-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1039683A true CA1039683A (en) | 1978-10-03 |
Family
ID=24384598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA251,434A Expired CA1039683A (en) | 1975-07-14 | 1976-04-29 | Coupler |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1039683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278786A (en) * | 2018-11-20 | 2019-01-29 | 湘潭牵引机车厂有限公司 | A kind of fixed grasp device and the electric locomotive with the device |
-
1976
- 1976-04-29 CA CA251,434A patent/CA1039683A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278786A (en) * | 2018-11-20 | 2019-01-29 | 湘潭牵引机车厂有限公司 | A kind of fixed grasp device and the electric locomotive with the device |
| CN109278786B (en) * | 2018-11-20 | 2023-12-19 | 湘潭牵引机车厂有限公司 | Fixed gripping device and electric locomotive with same |
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