CA1099594A - Bottom discharge dump car - Google Patents
Bottom discharge dump carInfo
- Publication number
- CA1099594A CA1099594A CA285,368A CA285368A CA1099594A CA 1099594 A CA1099594 A CA 1099594A CA 285368 A CA285368 A CA 285368A CA 1099594 A CA1099594 A CA 1099594A
- Authority
- CA
- Canada
- Prior art keywords
- car
- flaps
- flap
- unloading station
- discharge
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D7/00—Hopper cars
- B61D7/14—Adaptations of hopper elements to railways
- B61D7/16—Closure elements for discharge openings
- B61D7/24—Opening or closing means
- B61D7/30—Opening or closing means controlled by means external to cars
Abstract
ABSTRACT OF THE DISCLOSURE
A bottom discharge dump car of the type which can be moved on main wheels over rails into an unloading station where it becomes supported by means of support tracks on its upper section which engage bearing wheels, thus removing the load from the main wheels. Drops flaps on which the main wheels are mounted are provided as a bottom to the car, which are lowered upon entry into the unloading station by cooperation of rollers carried on the flaps with curved rails provided in the unloading station.
The drops flaps pivot about axes transverse to the longitudinal axes of the car. A protection arrangement for sealing beads for the drop flaps is also arranged in the car.
A bottom discharge dump car of the type which can be moved on main wheels over rails into an unloading station where it becomes supported by means of support tracks on its upper section which engage bearing wheels, thus removing the load from the main wheels. Drops flaps on which the main wheels are mounted are provided as a bottom to the car, which are lowered upon entry into the unloading station by cooperation of rollers carried on the flaps with curved rails provided in the unloading station.
The drops flaps pivot about axes transverse to the longitudinal axes of the car. A protection arrangement for sealing beads for the drop flaps is also arranged in the car.
Description
~ ~9594 The invention concerns a bottom~discharge dump car particularly for loose materials, comprising an upper section defining a load space, and having support tracks on each side for engagement with and support on bearing wheels in an unloading sta~ion. The car has a lower section with a drop bottom to the load space. Such bottom-discharge dump cars are unloaded in unloading stations especially equipped for that purpose, and the cars conventionally include a drop flap which is lowerable downwards into a bin at the unloading station and supported in the lowered state by rollers running on a curved rail.
The unloading station has a row of bearing wheels in the direction of travel of the car which support the upper part of the car in level position engaging beneath the support tracks located on the upper section thus shifting the we~ght of the car off the main wheels. The unloading station also is equipped with the curved rail by which the lowering of the discharge bottom flap is controlled.
In conventional cars the discharge flap drops down transversely to the longitudinal axis of the car (that is the pivot bearings for the drop flap are aligned parallel to the direction of the longi~udinal axis of the car and mounted on the longitudinal side of the upper section.
Upon entering the unloading station the upper section of the car moves fo~ards along the bearing wheels, while the bottom flap is supported while being opened transversely by rollers carried by the flap which engage the curved rail and, depending on the shape of the curved rail are moved from closed to open position. At the conclusion of the step of discharging the load, the flap is returned to closed position by further movement of the car, and engagement of the rollers with the curved rail.
While the drop flap is being opened, the emerging loose material generates a transverse force component such that the car is pressed against the flanges of the bearing wheels on the longitudinal side of the car on which the drop flap is rotatably mounted. Since thls pressure, against the flanges of the bearing wheels by the adjacent support track ~9~
occurs during entry of the car into the unloading station, the loose material which is initially entirely withln the load space presses particularly heavily against the drop flap as it is being opened, the transverse force component ls thus particularly great and results in considerable wear of the bearing wheels. Another disadvantage is that the car tends to move quite appreciably to one side as a result of this transverse force component with the result that derailment of the drop flap rollers can occur, thus rendering impossible the automatic closing of the flap after discharge of the load. With such displacement of the upper section of the car, there is the danger that after the closing process has been completed the main wheels of the car will no longer ride up cleanly onto and properly engage the rails when leaving the unloading station, resulting in derailment. Finally, such cars cannot be run into the unloading station in reverse, since the discharge flap rollers are then improperly placed with respect to the curved rail.
It is an object of the invention to provide a bottom-discharge dump car of the kind described which enables satisfactory running of the car onto the bearing wheels in the unloading station without undue wear and without derailment of the rollers on the drop bottom flap.
The apparatus here disclosed is a bottom-discharge dump car of the type described above in which drop bottom flaps are caused to open in the direction of the longitudinal axis of the car and are thus mounted on pivot bearings disposed transversely to the longitudinal axis of the car. The result of these measures is that in the course of unloadlng of the car a major transverse force component resulting from loose material pressing against the drop bottom is no longer present, instead~
longitudinal force components are produced so that any lateral movement of the car against the flanges of the bearing wheels is minimized, as well as any outward movement of the rollers on the drop flaps. Satis-factory running up of the support tracks onto the bearing wheels in the unloading station, and satisfactory contact between the rollers on the ~ ~59~
drop ~laps and the curyed rail is at all times enabled. Wear o~ the flanges of the ~earing wfieels? and derailment of the rollers can thus be avoided.
The drop flaps may have rollers located on both sides~ arranged in mirror symmetry to the longitudinal a~is of the car with curved rails for cooperation with these. The car may thus be run into the unloading station in reverse. The rollers located on both sides ensure satisfac-tory opening and closing motions of the drop flaps to avoid warping ef-fects. The drop flaps may be transversely divided in the middle of the 1() car and the pivot bearings on the upper section located adiacent the ends of the car. ~ith such an arrangement, the drop flaps are lowered from the middle of the car in opposite directions towards the end walls of the car with the consequence that the longitudinal force components resulting from the pressure of the loose material counteract one another. Thus, in the course of unloading the car, satisfactory distribution of forces, in equilibrium, is achieved~
Other features described are that in the closed state the drop flaps are close together with the adjacent edges sealed by individual sealing beads closely separated from one another, the beads being located in the middle region of the car underneath a crosspiece preferably designed as a deflecting roof, which overlies them. By separating the sealing beads for the two drop flaps from one another, damage to the sealing beads from crushing effects of material in the car are avoided, for instance, when the two drop flaps do not close exactly at the same time. Satisfactory sealing between a drop flap edge and its respective bead is effected in-~ !
5~L
dependently of the other ~Qttom flap and its sealing bead. To avoid possi`ble inadvertent sideways discharge, the drop ~laps are provided w~th chute walls overlapping the side walls o~ the car~ prefera~ly on the outside, ~orming a chute. The chute walls may be high enough so that even when the drop flaps are fully lowered there is no side gap.
The unloading station has a row of bearing wheels in the direction of travel of the car which support the upper part of the car in level position engaging beneath the support tracks located on the upper section thus shifting the we~ght of the car off the main wheels. The unloading station also is equipped with the curved rail by which the lowering of the discharge bottom flap is controlled.
In conventional cars the discharge flap drops down transversely to the longitudinal axis of the car (that is the pivot bearings for the drop flap are aligned parallel to the direction of the longi~udinal axis of the car and mounted on the longitudinal side of the upper section.
Upon entering the unloading station the upper section of the car moves fo~ards along the bearing wheels, while the bottom flap is supported while being opened transversely by rollers carried by the flap which engage the curved rail and, depending on the shape of the curved rail are moved from closed to open position. At the conclusion of the step of discharging the load, the flap is returned to closed position by further movement of the car, and engagement of the rollers with the curved rail.
While the drop flap is being opened, the emerging loose material generates a transverse force component such that the car is pressed against the flanges of the bearing wheels on the longitudinal side of the car on which the drop flap is rotatably mounted. Since thls pressure, against the flanges of the bearing wheels by the adjacent support track ~9~
occurs during entry of the car into the unloading station, the loose material which is initially entirely withln the load space presses particularly heavily against the drop flap as it is being opened, the transverse force component ls thus particularly great and results in considerable wear of the bearing wheels. Another disadvantage is that the car tends to move quite appreciably to one side as a result of this transverse force component with the result that derailment of the drop flap rollers can occur, thus rendering impossible the automatic closing of the flap after discharge of the load. With such displacement of the upper section of the car, there is the danger that after the closing process has been completed the main wheels of the car will no longer ride up cleanly onto and properly engage the rails when leaving the unloading station, resulting in derailment. Finally, such cars cannot be run into the unloading station in reverse, since the discharge flap rollers are then improperly placed with respect to the curved rail.
It is an object of the invention to provide a bottom-discharge dump car of the kind described which enables satisfactory running of the car onto the bearing wheels in the unloading station without undue wear and without derailment of the rollers on the drop bottom flap.
The apparatus here disclosed is a bottom-discharge dump car of the type described above in which drop bottom flaps are caused to open in the direction of the longitudinal axis of the car and are thus mounted on pivot bearings disposed transversely to the longitudinal axis of the car. The result of these measures is that in the course of unloadlng of the car a major transverse force component resulting from loose material pressing against the drop bottom is no longer present, instead~
longitudinal force components are produced so that any lateral movement of the car against the flanges of the bearing wheels is minimized, as well as any outward movement of the rollers on the drop flaps. Satis-factory running up of the support tracks onto the bearing wheels in the unloading station, and satisfactory contact between the rollers on the ~ ~59~
drop ~laps and the curyed rail is at all times enabled. Wear o~ the flanges of the ~earing wfieels? and derailment of the rollers can thus be avoided.
The drop flaps may have rollers located on both sides~ arranged in mirror symmetry to the longitudinal a~is of the car with curved rails for cooperation with these. The car may thus be run into the unloading station in reverse. The rollers located on both sides ensure satisfac-tory opening and closing motions of the drop flaps to avoid warping ef-fects. The drop flaps may be transversely divided in the middle of the 1() car and the pivot bearings on the upper section located adiacent the ends of the car. ~ith such an arrangement, the drop flaps are lowered from the middle of the car in opposite directions towards the end walls of the car with the consequence that the longitudinal force components resulting from the pressure of the loose material counteract one another. Thus, in the course of unloading the car, satisfactory distribution of forces, in equilibrium, is achieved~
Other features described are that in the closed state the drop flaps are close together with the adjacent edges sealed by individual sealing beads closely separated from one another, the beads being located in the middle region of the car underneath a crosspiece preferably designed as a deflecting roof, which overlies them. By separating the sealing beads for the two drop flaps from one another, damage to the sealing beads from crushing effects of material in the car are avoided, for instance, when the two drop flaps do not close exactly at the same time. Satisfactory sealing between a drop flap edge and its respective bead is effected in-~ !
5~L
dependently of the other ~Qttom flap and its sealing bead. To avoid possi`ble inadvertent sideways discharge, the drop ~laps are provided w~th chute walls overlapping the side walls o~ the car~ prefera~ly on the outside, ~orming a chute. The chute walls may be high enough so that even when the drop flaps are fully lowered there is no side gap.
2~
: - 3a . .
:
The rollers are mounted rotatably on the chute walls, by means of pro-filed brackets which at the same time contribute to the stabilization and stength of the cute walls. The curved rails may be made mirror symmetrical not only to the longitudinal axis of the car, but also transversely to the longitudinal axis, so that they prov:ide identical opening and closing curve segments for the flaps.
Advantages achieved by the disclosed apparatus are that the bottom-discharge dump car performs satisfactory running up on the bearing wheels of an unloading station with reduced wear phenomena and without derailment of the rollers on the drop flaps. Self-closing of the drop bottoms after unloading of the load space is thus effected, along with smooth return of the main wheels to the rails. As a result the new ; bottom-discharge dump car is distinguished by greater functional re-liability and longer li~e.
More particularly in accordance with the invention there is pro-vided, a bottom discharge dump car for movement along rails and into an unloading station, said car having a longitudinal axis~ comprising, an upper section defining a load space having side and end walls~
- main wheels carried on said car for normal support of said car on said rails outside said unloading station, support tracks on either side of said upper section for engagement with bearing wheels in the unloading station, a pair of bottom discharge flaps to said car, pivot bearings carried by said car for permitting lowering of each said flap respectively about an axis transverse to said longitudinal axis, a respective upstanding bearing bracket on each side of said flaps, a roller mounted on each said bracket for support of said re spective flap in said unloading station and Eor lowering subsequent raising of said flap, while said car passes into and out of said unload-ing station, by engagement with a respective curved rail adJacent said bracket in said unloading station, each saiddischarge flap having upstanding walls adjacent its side edges and overlapping said side walls of the car, each said f:lap thereby for~ing a chute for confining and directing material disch~rged from the car when such flap is in lowered condition, said main wheels running clear of said rails, and said car being supported by cooperation of said support tracks with said bearing wheels in said unloading station, and said flaps being laterally confined by the respective curved rails and adjacent upstanding bearing brackets.
The main wheels may be carried on the bottom discharge flaps. The rollers on either side of the car may be disposed in mirror symmetry to the longitudinal axis of the car. The discharge flaps may provide a transverse division in the middle of the car with respective pivot bear-ings for the flaps adjacent respective ends of the car. There may be a pair of sealing beads adjacent one another in the center of the car Eor sealing the closing edges of the flaps with a roof form crosspiece pro-tecting the beads. The curved rails may be so shaped to provide identical opening and closing segmental paths for the respective dis~
charge flaps.
Specific embodiments of the invention will now be described having reference to the accompanying drawings in which;
~ .
- 5 ~
`'` ! ~
, ~
.
`~' ' ` ' :
` ~995~
Figure 1 shows a bottom-discharge dump car schematically in end elevation9 partly in vertical section, and Figure 2 shows the apparatus of Figure 1 in side elevation with lowered drop bottom flap.
In the figures there is shown a bottom-discharge dump car, particu-larly for loose materials, comprising an upper car section 1 with load space,support tr~cks 2 on both sides for running up engagement on bearing whee~ 3 in an unloading station 4, and a lower section 5 with bottom 6 closing off the load space. The bottom is divided into two drop flaps 6a, 6b whlch are separated from each other, each fitted with a main wheel-and-axle assembly 7. Drop flaps 6a and 6b are mounted on pivot bearings 8 to be lowerable into a bin of unloading station 4, and in the lowered state are supported by means of rollers 9 on a curved rail 10. Drop flaps 6a, 6b open in the direction of longitudinal dump car axis 11, and for this purpose are mounted lowerably on pivot bearings 8 aligned transversely to longitudinal axfs 11 of the car. The drop flaps 6a,6b have rollers 9 disposed in mirror-symmetry on either side of the longitudinal axis 11, with curved rails 10 cooperating with respective rollers. They are transversely divided in the middle of the car, while in the vicinity ~0 of the ends of the car, pivot bearings 8 are located in the upper section of the car. Drop flaps 6a, 6b thus fall away from each other during the unloading process, thereby mutually compensating the longltudinal force - 5a -5~
components that arise. When closed, the flaps 6a, 6b are oriented tightly together with their neighboring edges 12 at sealing beads 13a,_13b and are thus closely separated from each other. The beads are located in the middle of the car underneath a crosspiece 14 which covers them and is preferably designed with a material deflecting roof shape. Drop Elaps 6a, 6b have upstanding walls 16 overlapping the side walls 15 of the car on the outside, thus forming a chute. Rollers 9 are mounted rotatably on the wall 16 by way of bearing brackets 17. Curved rails 10 have identical opening and closing curve segments 18 and are thus also in mirror-symmetry transversel~ to longieudinll c~r axi~ 11.
' . .
: - 3a . .
:
The rollers are mounted rotatably on the chute walls, by means of pro-filed brackets which at the same time contribute to the stabilization and stength of the cute walls. The curved rails may be made mirror symmetrical not only to the longitudinal axis of the car, but also transversely to the longitudinal axis, so that they prov:ide identical opening and closing curve segments for the flaps.
Advantages achieved by the disclosed apparatus are that the bottom-discharge dump car performs satisfactory running up on the bearing wheels of an unloading station with reduced wear phenomena and without derailment of the rollers on the drop flaps. Self-closing of the drop bottoms after unloading of the load space is thus effected, along with smooth return of the main wheels to the rails. As a result the new ; bottom-discharge dump car is distinguished by greater functional re-liability and longer li~e.
More particularly in accordance with the invention there is pro-vided, a bottom discharge dump car for movement along rails and into an unloading station, said car having a longitudinal axis~ comprising, an upper section defining a load space having side and end walls~
- main wheels carried on said car for normal support of said car on said rails outside said unloading station, support tracks on either side of said upper section for engagement with bearing wheels in the unloading station, a pair of bottom discharge flaps to said car, pivot bearings carried by said car for permitting lowering of each said flap respectively about an axis transverse to said longitudinal axis, a respective upstanding bearing bracket on each side of said flaps, a roller mounted on each said bracket for support of said re spective flap in said unloading station and Eor lowering subsequent raising of said flap, while said car passes into and out of said unload-ing station, by engagement with a respective curved rail adJacent said bracket in said unloading station, each saiddischarge flap having upstanding walls adjacent its side edges and overlapping said side walls of the car, each said f:lap thereby for~ing a chute for confining and directing material disch~rged from the car when such flap is in lowered condition, said main wheels running clear of said rails, and said car being supported by cooperation of said support tracks with said bearing wheels in said unloading station, and said flaps being laterally confined by the respective curved rails and adjacent upstanding bearing brackets.
The main wheels may be carried on the bottom discharge flaps. The rollers on either side of the car may be disposed in mirror symmetry to the longitudinal axis of the car. The discharge flaps may provide a transverse division in the middle of the car with respective pivot bear-ings for the flaps adjacent respective ends of the car. There may be a pair of sealing beads adjacent one another in the center of the car Eor sealing the closing edges of the flaps with a roof form crosspiece pro-tecting the beads. The curved rails may be so shaped to provide identical opening and closing segmental paths for the respective dis~
charge flaps.
Specific embodiments of the invention will now be described having reference to the accompanying drawings in which;
~ .
- 5 ~
`'` ! ~
, ~
.
`~' ' ` ' :
` ~995~
Figure 1 shows a bottom-discharge dump car schematically in end elevation9 partly in vertical section, and Figure 2 shows the apparatus of Figure 1 in side elevation with lowered drop bottom flap.
In the figures there is shown a bottom-discharge dump car, particu-larly for loose materials, comprising an upper car section 1 with load space,support tr~cks 2 on both sides for running up engagement on bearing whee~ 3 in an unloading station 4, and a lower section 5 with bottom 6 closing off the load space. The bottom is divided into two drop flaps 6a, 6b whlch are separated from each other, each fitted with a main wheel-and-axle assembly 7. Drop flaps 6a and 6b are mounted on pivot bearings 8 to be lowerable into a bin of unloading station 4, and in the lowered state are supported by means of rollers 9 on a curved rail 10. Drop flaps 6a, 6b open in the direction of longitudinal dump car axis 11, and for this purpose are mounted lowerably on pivot bearings 8 aligned transversely to longitudinal axfs 11 of the car. The drop flaps 6a,6b have rollers 9 disposed in mirror-symmetry on either side of the longitudinal axis 11, with curved rails 10 cooperating with respective rollers. They are transversely divided in the middle of the car, while in the vicinity ~0 of the ends of the car, pivot bearings 8 are located in the upper section of the car. Drop flaps 6a, 6b thus fall away from each other during the unloading process, thereby mutually compensating the longltudinal force - 5a -5~
components that arise. When closed, the flaps 6a, 6b are oriented tightly together with their neighboring edges 12 at sealing beads 13a,_13b and are thus closely separated from each other. The beads are located in the middle of the car underneath a crosspiece 14 which covers them and is preferably designed with a material deflecting roof shape. Drop Elaps 6a, 6b have upstanding walls 16 overlapping the side walls 15 of the car on the outside, thus forming a chute. Rollers 9 are mounted rotatably on the wall 16 by way of bearing brackets 17. Curved rails 10 have identical opening and closing curve segments 18 and are thus also in mirror-symmetry transversel~ to longieudinll c~r axi~ 11.
' . .
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A bottom discharge dump car for movement along rails and into an unloading station, said car having a longitudinal axis, comprising, an upper section defining a load space having side and end walls, main wheels carried on said car for normal support of said car on said rails outside said unloading station, support tracks on either side of said upper section for engagement with bearing wheels in the unloading station, a pair of bottom discharge flaps to said car, pivot bearings carried by said car for permitting lowering of each said flap respectively about an axis transverse to said longitudinal axis, a respective upstanding bearing bracket on each side of said flaps, a roller mounted on each said bracket for support of said respective flap in said unloading station and for lowering subsequent raising of said flap, while said car passes into and out of said unloading station, by engagement with a respective curved rail adjacent said bracket in said unloading-station, each said discharge flap having upstanding walls adjacent its side edges and overlapping said side walls of the car, each said flap thereby forming a chute for confining and directing material discharged from the car when such flap is in lowered condition, said main wheels running clear of said rails, and said car being supported by cooperation of said support tracks with said bearing wheels in said unloading station, and said flaps being laterally confined by the respective curved rails and adjacent upstanding bearing brackets.
2. A car as defined in claim 1, said main wheels being carried on said bottom discharge flaps.
3. A car as defined as claim 2, each discharge flap having said rollers on either side disposed in mirror symmetry to the longitudinal axis of the car.
4. A car as defined in claim 2, the discharge flaps providing a trans-verse division in the middle of the car with respective pivot bearings for said flaps adjacent respective ends of said car.
5. A car as defined in claim 4, the discharge flaps having neighbouring edges closely adjacent one another in closed state of said flaps, sealing beads for said respective neighbouring edges and a cross piece in said car protecting said sealing heads from material in the car.
6. A car as defined in claim 5, said cross piece being of roof form with respect to said beads.
7. A car as defined in claim 3, said curved rails being curved for pro-viding identical opening and closing segmental paths for the respective discharge flaps.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2637976.0 | 1976-08-24 | ||
| DE2637976A DE2637976C3 (en) | 1976-08-24 | 1976-08-24 | Bottom dump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1099594A true CA1099594A (en) | 1981-04-21 |
Family
ID=5986173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA285,368A Expired CA1099594A (en) | 1976-08-24 | 1977-08-24 | Bottom discharge dump car |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1099594A (en) |
| DE (1) | DE2637976C3 (en) |
| ZA (1) | ZA766499B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684729A (en) * | 2021-09-29 | 2021-11-23 | 安徽马钢矿业资源集团姑山矿业有限公司 | Curved rail structure of unloading station of bottom-dump mine car and improvement method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB785543A (en) * | 1954-07-19 | 1957-10-30 | Coal Industry Patents Ltd | Improvements in and relating to mine cars |
| GB1247165A (en) * | 1968-10-23 | 1971-09-22 | Rotaque Proprietary Ltd | Side discharge hopper |
-
1976
- 1976-08-24 DE DE2637976A patent/DE2637976C3/en not_active Expired
- 1976-10-29 ZA ZA766499A patent/ZA766499B/en unknown
-
1977
- 1977-08-24 CA CA285,368A patent/CA1099594A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684729A (en) * | 2021-09-29 | 2021-11-23 | 安徽马钢矿业资源集团姑山矿业有限公司 | Curved rail structure of unloading station of bottom-dump mine car and improvement method thereof |
| CN113684729B (en) * | 2021-09-29 | 2023-02-03 | 安徽马钢矿业资源集团姑山矿业有限公司 | Curved rail structure of unloading station of bottom-dump mine car and improvement method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA766499B (en) | 1977-10-26 |
| DE2637976A1 (en) | 1978-03-02 |
| DE2637976B2 (en) | 1981-05-14 |
| DE2637976C3 (en) | 1982-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3802584A (en) | Conveyor system | |
| US5170717A (en) | Railroad cars for transporting cylindrical objects transversely with multi-piece movable cover for exposing entire cargo area | |
| US3169492A (en) | Tiltable roof for street and rail vehicles | |
| JPH04274962A (en) | Loading vehicle for ballasting purpose | |
| CA1099594A (en) | Bottom discharge dump car | |
| US5993131A (en) | Bulk loader car | |
| US3509828A (en) | Railway hopper car gate outlet | |
| US2020863A (en) | Railway car | |
| US4353312A (en) | Bottom discharge hopper rail car | |
| CA2117023C (en) | Improved side stake for rotary dump rail car | |
| US4550665A (en) | Bottom discharge hopper structures | |
| US2548111A (en) | Conveyer discharge mechanism | |
| US2719636A (en) | Bottom dump car | |
| US1522624A (en) | Selective dump car | |
| US3487963A (en) | Arrangement for the discharge of goods from a railbound car through its bottom | |
| US4141299A (en) | Dumping railway quench car | |
| US4669392A (en) | Bottom discharge hopper rail car | |
| JPH03217368A (en) | Rail running type ballast loading car | |
| US2741192A (en) | Sliding closure for discharge outlet | |
| US3161148A (en) | Tilting section hopper car | |
| GB2248812A (en) | Railway vehicle set, eg for use as a car transporter. | |
| CA1127906A (en) | Hopper | |
| US3978997A (en) | Door tripping device for railway hopper car | |
| SU1000323A1 (en) | Railway car | |
| US1706607A (en) | Selective-dump car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |