JP2837362B2 - Female connection member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is generally widely used in the railway industry today to join together adjacently located ends of a pair of railway wagons in a substantially semi-permanent state. And particularly to each end of the towbar assembly in order to obtain the required amount of bending movement required between a pair of rail wagons when operating the track structure. More particularly, the present invention relates to a female coupling member which can be used in an improved non-relaxed drawbar assembly specially designed to utilize a ball and race assembly that is disposed substantially adjacent to the ball and race assembly. The female coupling member can also be used during the routine repair of the prior art loose tension drawbar assembly to enable the cost of replacing the prior art loose tension drawbar assembly at various stages. Replace ball and rail to replace one end of loose towbar assembly. And it is used in connection with the male connection member for use in slackless type drawbar assembly that uses the assembly of the wheel.

[0002]

BACKGROUND OF THE INVENTION Prior to the development of the present invention, as is generally well known in the railway industry, several loose-fitting towbar assemblies have been widely used for many years. The non-relaxing towbar assembly is designed to connect adjacently located ends of a pair of rail wagons together in a substantially semi-permanent state.

[0003] In other words, these wagons do not need to be cut off frequently during use. Typically, wagons are cut off only when the required repairs and / or periodic inspections are performed on one or more wagons.

[0004] These railway wagons are of the ordinary type used in the railway industry, most commonly referred to as dedicated services. Dedicated service wagons include, for example, wagons that are frequently used to transport various types of building materials, as well as wagons that are used to transport coal, coke, and / or various other minerals. These include light trucks and motor vehicles, as well as tank wagons used to transport various liquids.

[0005] Examples of minerals commonly transported by these dedicated service railway wagons include various ores, cement, slag, and stone. Various liquids known to applicants to be transported by dedicated service rail wagons include at least some different chemicals, including liquefied gases.

[0006] Among the most frequently used old applications currently known to the applicant are at least five railway wagons which are connected together utilizing these non-relaxable drawbar assemblies. . However, as well as about 10 railway wagons connected together in this way are known. Railway wagons that are semipermanently linked together are commonly cited by the rail industry as many as five and / or ten.

One example of a prior art non-relaxable drawbar assembly is described in US Pat. No. 5,000,330. The lessons of US Patent No. 500330 are incorporated herein by reference thereto. Illustrated in this particular reference are a plurality of rail wagons having adjacently located ends connected together utilizing a non-relaxing drawbar assembly.

[0008] Most, if not all, loose towbar assemblies known by the applicant to be used prior to the present invention have a relatively large amount of friction disposed on several different components. It has a mating surface. The friction mating surfaces of each of these pairs are designed, in a sense, to allow for movement that occurs in connection with the other pair.

[0009] The frictional wear exhibited by these friction mating surfaces is a costly operation that must be applied to prior art non-relaxable drawbar assemblies in order to maintain them in satisfactory and relatively safe operating conditions. It usually occurs more frequently than maintenance.

[0010] In addition, it also detracts from the direct costs borne by the railroad industry, both for the effort and resources required to maintain these prior art slack-type drawbar assemblies. This relatively frequent maintenance requirement has associated associated significantly higher overhead costs.

One of the indirect costs incurred is due to the fact that the railway wagons must at least temporarily depart from any revenue generated by the business during the regular maintenance of the non-relaxable towbar assembly. Directly related. Obviously, all of the direct and indirect costs incurred will typically have to be passed on to passengers by the railway company in the form of higher fares.

[0012]

SUMMARY OF THE INVENTION Accordingly, one of the primary objects of the present invention is to provide a ball and race assembly available at at least one adjacent end of a non-relaxable drawbar assembly. It is an object of the present invention to provide a female coupling member for use in a non-relaxing drawbar assembly that couples adjacently located ends of a pair of wagons together in a substantially semi-permanent state.

It is another object of the present invention to provide a relatively slender traction rod assembly as known in the art when compared to the relatively large number of components required to move with respect to each other. For use in a non-relaxing drawbar assembly that connects adjacently located ends of a pair of wagons together in a substantially semi-permanent state, minimizing the number of components that must move. To provide a female connecting member.

It is yet another object of the present invention to provide a method for substantially repairing and / or servicing, especially when compared to the repair and / or routine maintenance required of currently known conventional slackless drawbar assemblies. Provided is a female connection member for use in a non-relaxing towbar assembly for connecting adjacently located ends of a pair of wagons together in a substantially semi-permanent state with little maintenance. It is.

It is another object of the present invention to provide a substantially semi-permanent service life which is relatively long, particularly when compared to the standard service life of a conventional slack traction rod assembly currently known. SUMMARY OF THE INVENTION It is an object of the present invention to provide a female connecting member for use in a non-relaxing drawbar assembly that connects adjacently located ends of a pair of wagons together in a typical manner.

[0016] Another object of the invention is to provide a loose connection that connects adjacently located ends of a pair of wagons together in a substantially semi-permanent state, at a price that is significantly advantageous for the user. It is an object of the present invention to provide a female coupling member for use in a mold towbar assembly.

It is another object of the present invention to connect adjacently located ends of a pair of wagons together in a substantially semi-permanent state, which is relatively easy to retrofit into existing wagons. It is an object of the present invention to provide a female connecting member for use in a non-relaxable drawbar assembly.

Another object of the present invention is to provide a yoke, a traction gear,
Non-relaxable towbar for joining adjacently located ends of a pair of wagons together in a substantially semi-permanent state, substantially lighter in weight than conventional couplers requiring a towkey member and a follower member An object is to provide a female coupling member for use in an assembly.

Another object of the present invention is to provide a substantially semi-permanent, adjacently located end of a pair of wagons that minimizes the number of frictional mating surfaces exposed to excessive frictional wear. SUMMARY OF THE INVENTION It is an object of the present invention to provide a female coupling member for use in a non-relaxable drawbar assembly that couples together.

It is another object of the present invention to provide a substantially semi-permanent, adjacently disposed end of a pair of wagons that does not require any special tools and / or other equipment to attach to the wagons. SUMMARY OF THE INVENTION It is an object of the present invention to provide a female connecting member for use in a non-relaxable drawbar assembly that connects parts together.

Some of the specific objects and advantages of the present invention have been described in detail above, but are not intended for use in a loose tension drawbar assembly coupling a ball and race assembly at each end. Various other objects and advantages of the female coupling member will become apparent from the following more detailed description of the invention, particularly when the description is made in conjunction with the accompanying drawings and claims, as well as familiarity with the art of connecting freight cars. It will be readily apparent to those skilled in the art.

[0022]

SUMMARY OF THE INVENTION The present invention is a non-relaxed traction specially designed for connecting adjacently located ends of a pair of wagons together in a substantially semi-permanent state. An object of the present invention is to provide a female connecting member that can be easily used for a rod assembly. A non-loosening towbar assembly to which the female connecting member of the present invention can be mostly applied includes an assembly of a ball and a bearing ring supported by a male connecting member. The female connecting member is
It is arranged under the bottom of the vehicle body of the first freight car, and is arranged so as to be able to be fitted almost tightly to one end of the central base. The cavity is formed in the female connecting member movably housed at the first end of the male connecting member. The cavity is essentially defined by a back wall and a pair of side walls. The inner surface of each of the back wall portion and the pair of side wall portions has a predetermined contour. A first opening having a predetermined contour formed through one side wall of the pair of side walls, and a second axially facing second opening having a predetermined contour formed through the other side wall of the pair of side walls. There is an opening. The hole is formed through a predetermined portion of the first end of the male connecting member, and has at least a portion of a ball member (hereinafter, referred to as a “spherical member”) disposed therein. A pair of shaft members arranged substantially horizontally extend outward by a predetermined distance from an axially opposed outer surface of the spherical member. At least a portion of one shaft member of the pair of shaft members is disposed inside a first opening formed through one side wall portion of the pair of side wall portions, and at least a portion of the other shaft member of the pair of shaft members is Are disposed inside a second opening formed through the other side wall of the pair of side walls. Further, one of each of the pair of shaft members has an axially opposed and substantially flat flat surface formed thereon. There is a bearing ring assembly disposed within the bore and secured to the first end of the male coupling member. The inner surface of the bearing ring assembly is disposed about a portion of a spherical member disposed within a hole formed in the first end of the male coupling member.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Before beginning a more detailed description of the invention, for clarity, identical components having the same function will be provided with the same reference numerals throughout the several figures illustrated in the drawings. Note that it is attached.

With particular reference to FIGS. 1-3 of the accompanying drawings. Illustrated here is a preferred embodiment of a female coupling member, generally indicated at 10, which can be readily utilized as one of the key components of the improved non-loosened drawbar assembly, generally indicated at 20. This is a simple example. The modified loose tension rod assembly 20 is utilized to join together adjacently located ends (not shown) of a pair of rail wagons (not shown) in a substantially semi-permanent state. .

The female connecting member 10 has a first predetermined contour. The shape of the outermost surface portion of the first predetermined contour of the female connecting member 10 is a center base portion in which the female connecting member 10 is sequentially fixed to the bottom (not shown) of a vehicle main body (not shown) of the railway wagon. It is designed to be substantially completely disposed within the first end of the twelfth and to be easily secured to that end in a removable manner.

In the preferred embodiment of the present invention as illustrated, the female coupling member 10 is substantially restricted from any longitudinal movement within the central base 12. This restriction is made by the rear stop member 13 in one axial direction and by the front traction member 15 in the other axial direction opposite to the axial direction.

There is a support plate member 17 detachably fixed to the central base portion 12 below the female connecting member 10. The support plate member 17 prevents the female connecting member 10 from vertically moving downward.

The cavity 14 is formed in the female connecting member 10. The cavity 14 is defined by at least the inner surface 16 having the second predetermined profile of the back wall portion 18 and the inner surfaces 22 and 24 of the pair of side wall portions 26 and 28 of the female connecting member 10. Each inner surface 22, 24 has a third predetermined profile.

The second predetermined contour of the inner surface 16 of the back wall 18 is preferably substantially concave in both the vertical and horizontal directions, while the third predetermined contour of the inner surfaces 22, 24 is standard It is expressed in a convex shape at least in the horizontal direction. In a preferred embodiment of the present invention, the inner surfaces 22, 24 are
It has a substantially convex shape in both the horizontal and vertical directions.

One side wall 2 of the pair of side walls 26 and 28
The first opening 30 is formed through the opening 6.
The first opening 30 has a fourth predetermined contour. In the present embodiment, the fourth predetermined contour of the first opening 30 includes at least a substantially round first curved portion 32 and a substantially open first open bottom portion 34.

The clear function of the first bent portion 32 and the first open bottom portion 34 of the first opening 30 will become clearer as the description of the present invention is continued.

A second, second, axially opposed second predetermined contour.
An opening 36 is provided in the female connecting member 10. The second opening 36 is formed on the other side wall 28 of the pair of side walls 26 and 28.
It is formed through.

It is presently preferred that the fourth predetermined profile of the first opening 30 be substantially the same as the fifth predetermined profile of the second opening 36. However, it will be understood that the invention is not so limited.

A non-relaxed drawbar assembly 20 specially designed to be used with the female coupling member 10 of the present invention comprises:
Further, there is provided a male connecting member generally indicated by reference numeral 40 having a sixth predetermined contour.

At least the first end 3 of the male connecting member 40
8 is mounted so as to be rotatably disposed inside a cavity 14 formed in the female connecting member 10. The end surface 42 of the first end portion 38 disposed facing the inner surface 16 of the back wall portion 18 of the female connecting member 10 has a substantially convex shape in a plane disposed in each of the vertical direction and the horizontal direction. It is preferably shown. Except for the end surface 42, the first end 38 of the male connecting member 40 is preferably substantially rectangular except for a radius disposed along the outer edge.

The hole 44 is formed through a predetermined portion of the male connecting member 40 in contact with the first end 38. According to a preferred embodiment of the present invention, hole 44 is substantially circular and has a predetermined diameter.

Nevertheless, it will be understood that various other shapes for the bore 44 are readily imaginable, and that various other shapes are conceivable within the broad scope of the claims which refer to the present invention. Will.

Further, the non-loosening type drawbar assembly 20 using the female connecting member 10 of the present invention includes a ball-shaped member 46 (hereinafter, referred to as a “spherical member 46”). At least a predetermined portion of the spherical member 46 is the first member of the male connecting member 40.
It is located inside a hole 44 formed through the end 38.

In the preferred embodiment of the present invention, the outer surface of the spherical member 46 is a polished surface. Even more preferably, the polished outer surface of the spherical member 46 is a polished chrome-plated surface.

There is a pair of substantially horizontally disposed shaft members 48 and 50 extending outward from the axially opposed outer surfaces 53 and 55 of the spherical member 46 by a predetermined distance. At least a portion of one shaft member 50 is disposed inside the substantially rounded curved portion 32 of the first opening 30 formed through the one side wall portion 26, and the other shaft member 4 of the pair of shaft members 48 and 50 is disposed.
At least a portion of 8 is disposed inside a second opening 36 formed through the other side wall 28 of the pair of side walls 26, 28.

Each one of the pair of shaft members 48, 50 has an axially opposed and substantially flat flat surface portion 52, 54 formed thereon. Almost flat flat surface 5
The functions performed by 2,54 will become apparent as the detailed description of the invention continues.

Although the invention is not so limited, it is presently preferred that both the spherical member 46 and the pair of shaft members 48, 50 be formed as completely integral components.

There is a bearing ring assembly 56 circumscribing and disposed within the bore 44 and having at least a portion secured to the first end 38 of the male coupling member 40. According to a preferred embodiment of the present invention, the race assembly 56 is removably secured to the first end 38 of the male coupling member 40. However, the first end 3 of the male connecting member 40
A race assembly 56 welded to 8 is also within the scope of the present invention.

The inner surface of the bearing ring assembly 56 is disposed around a portion of the spherical member 46 located inside the hole 44 formed in the male connecting member 40. In this state, it is preferable that the spherical member 46 continue to be located substantially at the center of the inside of the hole 44.

In an alternative configuration of the preferred embodiment of the present invention, the outer surface of the spherical member 46 and the race assembly 5
6, between the inside surfaces of the car reeling company (KahrR)
earing Co. ) Is sold under the trade name "KARLON" and has a substantially solid lubricating liner member 57.

The fixing means, generally designated by the reference numeral 60, comprises a second end 58 of the male connecting member 40 and a second end 58 of the male connecting member.
The end can be fitted to both the second end (not shown) of another male connecting member for fixing the second end of the male connecting member to the second end of the other male connecting member.

The fixing means 60 merely supplies a welding portion for fixing the second end 58 of the male connecting member 40 to the second end of another male connecting member. In this example,
The second end 58 of the male connecting member 40 and the second end of the other male connecting member are adapted to easily pass through any curve that a railroad wagon encounters in track structure, so that the improved non-relaxed towbar assembly can be used. It may be sufficient to provide at least the required spacing between adjacently located ends of a pair of railway wagons connected together by 20.

In the preferred embodiment of the present invention, the securing means 60 is located between and fixed to the second end 58 of the male connecting member 40 and the second end of the other male connecting members. Or a rod-shaped member or a tubular member 62.

When the tubular member 62 is used to secure the second end 58 of the male connecting member 40 and the second end of another male connecting member together, the second end of the male connecting member 40 is used. Part and the second end of the other male connecting member, the tubular member 6
The second end 58 inserted into each of the opposing ends of the
It is provided on the connecting member . On the other hand, when a solid bar (not shown) is used to secure the second end 58 of the male connecting member 40 to the second end of another male connecting member, the male connecting member 40 The second end 58 and the second end of the other male connecting member are provided with a sleeve-shaped portion (not shown) for receiving the respective end of the bar-shaped member.

Further, provided in the preferred embodiment of the non-relaxable drawbar assembly 20 is a pair of wedging means indicated generally at 70. The wedging means 70 includes a bolt 66 and a washer means 68 which are disposed in the longitudinal direction.
And a pair of wedge stoppers 64 each having The washer means 68 is a Bellville (Bellville).
e) It is preferably a type washer.

One of the wedge members 64 of the pair of wedge members 64 is provided on one of the flat surface portions 52, 54 of the pair of shaft members 48, 50 which are opposed to each other in the axial direction and are substantially flat. An engaging tapered surface 72 is provided.
A generally flat, vertically disposed vertical surface 74 disposed on one of the wedge members 64 of the pair of wedge members 64 is engaged with an engagement surface 76 of the respective front traction member 15.

The other wedge-stopping member of the pair of wedge-stopping members 64 is provided on the other flat surface portion 54 of the substantially flat flat surface portions 52 and 54 formed in the pair of shaft members 48 and 50 and facing in the axial direction. An engaging tapered surface 78 is provided.
There is a vertical surface 80 that is substantially flat and vertically disposed on the other wedge member of the pair of wedge members 64 that engages the engagement surface 82 of each front traction member 15.

While preferred and various alternative embodiments of the present invention have been described in detail above, particularly with reference to the drawings, without departing from the spirit and scope of the appended claims, It will be appreciated by those skilled in the art that are familiar with wagon couplings that additional modifications and / or other modifications of the loose-type drawbar assembly are possible.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional top view illustrating one preferred embodiment of a female coupling member coupled to one end of an improved loosening drawbar assembly assembled in accordance with the present invention.

FIG. 2 is a side view, partially in cross section, of a female coupling member coupled to the non-loosening drawbar assembly illustrated in FIG. 1;

FIG. 3 is an end view of a partial cross section viewed from a line III-III in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 10 female connecting member, 12 central base portion, 13 rear stop member, 14 cavity, 15 front traction prevention member, 16 inside surface, 17 support plate member, 18 back wall portion, 20 non-relaxed traction rod assembly, 22, 24 Inner surface, 26, 28 side wall, 30 first opening 32 curved part, 36 second opening, 38 first end, 40 male connecting member, 42 end surface, 44 hole, 46 spherical member, 48, 50 shaft member 52, 54 flat surface portion, 53, 55 outer surface, 56 raceway ring assembly, 57 lubricating liner member, 58 second end , 60 fixing means, 62 rod or tubular member, 64 wedge-stop member, 66 bolt, 68 washer means; 70 wedging means; 72, 78 tapered surface; 74, 80 vertical surface; 76, 82 engaging surface.

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Michael G. Hooliskow, Brooklyn Drive, Munster, Indiana, United States of America 1308 (72) Inventor David W. Dowty Jr. Butternut drive 205 (56) References JP-A-50-47108 (JP, A) JP-B-53-46644 (JP, Y2) US Patent 5065679 (US, A) (58) Fields studied (Int. . ^6, DB name) B61G 5/02

Claims (27)

(57) [Claims] 1. A female coupling member for use in an improved non-loosened towbar assembly for coupling adjacently disposed ends of a pair of railway wagons together in a substantially semi-permanent state, comprising: a) a female connecting member having a first predetermined contour, which is entirely fixed inside one end of a central base portion fixed to the bottom of the vehicle body of the railway wagon , and (b) formed on the female connecting member. a cavity,
A back wall portion of the female connection member having a second predetermined contour;
(3) a pair of side walls of the female connection member having a predetermined contour;
A cavity formed by its front part through the one side wall portion of the pair of side wall portions to accommodate a portion of (c) male connection member one shaft member disposed on a spherical member held in A first opening having a fourth predetermined contour formed in the vicinity of the first member; and (d) for accommodating a part of the other axially opposed shaft member disposed on the spherical member held by the male connecting member. through the other side wall portion of <br/> the pair of side wall portions to close to its front
A female connection member comprising an axially opposed second opening having a fifth predetermined contour formed in contact with the female connection member. 2. The method according to claim 1, wherein the second predetermined contour of the inner surface of the back wall of the female connection member is substantially concave in both vertical and horizontal directions. Female connecting member. Wherein said third predetermined configuration of said pair of side wall portions of each said inner surface of said female connection member, according to claim 2, characterized in that the generally convex at least in the horizontal direction Female connection member. 4. The method according to claim 1, wherein the third predetermined contour of the inner surface of each of the pair of side wall portions of the female connecting member is substantially convex in both vertical and horizontal directions. 3. The female connecting member according to 3 . 5. The fourth predetermined contour of the first opening formed through one of the side wall portions of the pair of side wall portions has at least a substantially rounded curved portion and a substantially open open bottom portion. The female connecting member according to claim 1, wherein: 6. The fifth predetermined contour of the second opening formed through the other side wall portion of the pair of side wall portions and facing in the axial direction has at least a substantially round curved portion and a substantially open open bottom portion. The female connecting member according to claim 5 , further comprising: 7. The female connection member according to claim 1, wherein the female connection member is formed as a completely integral casting. 8. The female connecting member according to claim 1, wherein said female connecting member is substantially U-shaped. 9. The female connecting member according to claim 8 , wherein the pair of side walls extend outward from an outer end of the back wall of the connecting member. 10. A female connection member and a male connecting member, at least a portion is movably disposed inside the female coupling member of the first end portion, said first accommodating at least a portion of the spherical member therein
A hole formed through a predetermined portion of the male connecting member adjacent to an end portion, and a pair of substantially horizontally disposed extending outwardly by a predetermined distance from an axially opposed outer surface of the spherical member a shaft member, a pair of shaft members each having a substantially flat planar surface portion facing in the axial direction, fixed to said first end of said male connection member while being disposed around said hole A bearing ring assembly, the inner surface of which is disposed around a portion of the spherical member disposed inside the hole formed in the male connection member; and the male connection The second end of the member is connected to the second end of the other male connecting member.
The second of such male connecting members for fixing to the end
Fixing means engageable with the end and a second end of another male connecting member; and a pair of wedge preventing means, one of the wedge preventing means
Axially but which engage with one of the flat surface portion of the substantially flat the flat surface portion facing in the axial direction formed on the pair of shaft members, the other wedge means formed on said pair of shaft members Non-relaxable drawbar having a pair of wedging means for engaging the other flat surface portion of the flat surface portion facing the other, and a ball and race assembly disposed at one end thereof It consists specially designed female connection member usable in the assembly, substantially improved for connecting together an end disposed adjacent to the pair of freight cars in a semi-permanent state slackless type drawbar in assembly, the female coupling member, (a) one entire interior of the center sill portion which is secured to the bottom of both the main body portion of the railroad car is fixed, a female coupling member having a first predetermined configuration, (b) a cavity formed in said female connection member met ,
A back wall portion of the female connection member having a second predetermined contour;
(3) a pair of side walls of the female connection member having a predetermined contour;
A cavity formed by its front part through the one side wall portion of the pair of side wall portions to accommodate a portion of (c) male connection member one shaft member disposed on a spherical member held in formed adjacent to a first opening having a fourth predetermined configuration, (d) the pair of side walls to accommodate the other shaft member which faces in the axial direction of the spherical member held in the male coupling member A second, axially opposed female opening having a fifth predetermined profile formed through the other side wall of the portion and adjacent the front portion thereof. 11. The use of the improved non-relaxed drawbar assembly, comprising a substantially solid lubricating liner member between the spherical member and the inner surface of the race assembly. The female connecting member according to claim 10 . The second end of 12. male connection member for securing the second end of said other male connection member, a second end portion engageable with a said securing means of said male connection member is welded 11. The female coupling member according to claim 10 , wherein the female coupling member is used in the improved non-relaxed drawbar assembly. To 13. To secure the second end of said male connection member to the second end of said other male connection member, a second end portion engageable with a said securing means of said male connection member A second end of the male connecting member and a second end of the other male connecting member.
Claims for use in the improved slackless drawbar assembly comprising at least one of a bar or tubular member disposed between and secured to the ends. Item 11. The female connecting member according to Item 10 . 14. The male member is disposed between and fixed to a second end of the male connecting member and a second end of the other male connecting member. The improved non-relaxed towbar set, characterized in that each of the end and the second end of the other male connecting member comprises a male member inserted into a respective opposite end of the tubular member. The female connecting member according to claim 13 for use in a three-dimensional object. 15. The improved non-relaxed traction according to claim 15 , wherein the second predetermined contour, which is the inner surface of the back wall portion of the female connecting member , is substantially concave in both the vertical and horizontal directions. The female coupling member according to claim 10 for use in a rod assembly. 16. The improved non-relaxed traction, wherein the third predetermined contour, which is the inner surface of each of the pair of side wall portions of the female connecting member , is at least substantially convex in the horizontal direction. The female coupling member according to claim 15 for use in a rod assembly. 17. The method according to claim 17 , wherein the third predetermined contour, which is the inner surface of each of the pair of side wall portions of the female connecting member , is substantially convex in both vertical and horizontal directions. 17. The female coupling member according to claim 16 , for use in an improved non-relaxable drawbar assembly. 18. The first end of the male connecting member,
The female coupling member according to claim 10 for use in the improved non-relaxable drawbar assembly, wherein the female coupling member is substantially rectangular. 19. The first end of the male connecting member,
The improved loose connection characterized in that the female connection member is provided so as to face the inner surface of the back wall portion, and has surfaces that are substantially convex in each of a vertical direction and a horizontal direction. 19. The female coupling member according to claim 18 for use in a mold towbar assembly. 20. The fourth predetermined contour of the first opening formed through one side wall of the pair of side walls, and a shaft formed through the other side wall of the pair of side walls. The fifth predetermined profile of the second opening facing in the direction comprises at least a substantially rounded curve and a substantially open open bottom, for use in the improved non-relaxed drawbar assembly. The female connecting member according to claim 10 , for performing the operation. 21. The method according to claim 21, wherein the hole formed through the predetermined portion of the male connecting member adjacent to the first end is substantially circular and has a first predetermined diameter. Claim 10 for use in an improved non-relaxable drawbar assembly.
A female connecting member according to item 1. 22. The improved non-relaxed drawbar assembly as claimed in claim 22, wherein the race assembly is removably secured to the first end of the male coupling member. 11. The female connecting member according to 10 . 23. and the spherical member and said pair of shaft members, fully to claim 10 for use in the improved slackless type drawbar assembly, characterized in that it is formed as a component of integrated The described female coupling member. 24. The improved non-relaxed drawbar assembly according to claim 10, wherein said spherical member is chrome plated on at least a portion of its outer surface.
A female connecting member according to item 1. 25. The scalpel according to claim 24 , wherein at least a portion of the chrome-plated outer surface of the spherical member is polished for use in the improved non-relaxable drawbar assembly. Connecting member. 26. The pair of wedging means includes a pair of wedge preventing members each having a bolt and a washer means arranged to penetrate in a longitudinal direction, and one of the pair of wedge preventing members is An axially opposed, substantially flat, flat surface portion formed on the pair of shaft members includes a tapered surface that engages with one flat surface portion of the flat surface portion. A substantially flat vertical vertical surface disposed engages a vertical engagement surface of each front traction member, and the other wedge member of the pair of wedge members is formed on the pair of shaft members. A substantially flat, vertical, axially opposed, substantially flat, tapered surface that engages the other flat surface of the substantially flat surface portion and is disposed on the other wedge member of the pair of wedge members. Female coupling member according to claim 10 for the straight surface for use in the improved slackless type drawbar assembly, characterized in that engages vertical engagement surface of each of the front traction stop member . 27. The female coupling member according to claim 26 , wherein said washer means is a bellville-type washer for use with said improved non-loosening drawbar assembly.