US3476042A - Apparatus for automatically opening and closing hatch covers - Google Patents

Apparatus for automatically opening and closing hatch covers Download PDF

Info

Publication number
US3476042A
US3476042A US638843A US3476042DA US3476042A US 3476042 A US3476042 A US 3476042A US 638843 A US638843 A US 638843A US 3476042D A US3476042D A US 3476042DA US 3476042 A US3476042 A US 3476042A
Authority
US
United States
Prior art keywords
valve
hatch
car
closing
covers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US638843A
Inventor
John L Carney Jr
Richard H Dugge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACF Industries Inc
Original Assignee
ACF Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ACF Industries Inc filed Critical ACF Industries Inc
Application granted granted Critical
Publication of US3476042A publication Critical patent/US3476042A/en
Assigned to NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION, 175 WATER STREET, NEW YORK NEW YORK reassignment NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING ASSOCIATION, 175 WATER STREET, NEW YORK NEW YORK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ACF INDUSTRIES, INCORPORATED
Assigned to ACF INDUSTRIES, INCORPORATED reassignment ACF INDUSTRIES, INCORPORATED RECONVEYS ALL LETTERS PATENTS BACK TO BORROWER RECITED IN REEL 4307FRAMES 396 AND 397 RECORED OCT. 2, 1984 (LOAN HAS BEEN PAID IN FULL) Assignors: NATIONAL WESTMINSTER BANK USA, AS AGENT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D39/00—Wagon or like covers; Tarpaulins; Movable or foldable roofs

Definitions

  • the hatches are provided with covers, the opening and closing of which may require a considerable amount of work and time.
  • Means for automatically opening and closing hatch covers are shown in Patent 3,251,487 to P. F. Giesking.
  • the present invention has many important advantages over prior apparatus. First, it is capable of opening very large hatches, without possible damage to the cover or trackside rail. The danger of an accidentally open hatch cover is practically obviated.
  • the batch cover is held closed by a powered motor, and if a hatch cover is opened accidentally or manually, it is closed automatically and immediately by the motor. These features are important because an open hatch cover may be dangerous to the lading and also to personnel and the car itself. From an operational standpoint, automatic opening and closing of continuous hatch covers permit a train of cars to be loaded while they move slowly past a chute or loading point.
  • the invention relates to a hatch cover or covers for a closed railroad car and particularly to mechanism for opening and closing a hatch cover automatically.
  • the mechanism includes a compressed air motor, in the form of a cylinder and a piston connected to the cover, and controlled by a valve to keep the cover closed.
  • a pivoted or shiftable bar is mounted on the roof of the car and extends beyond the sides of the car to engage a trackside rail which causes the bar to turn or slide and thereby move a valve operator. The valve, then, is operated to actuate the motor to its opposite position and thus open the hatch cover.
  • the valve and motor remain in their operated position as long as the bar engages the trackside rail, and thereafter the valve and motor shift back to their normal positions, closing the hatch cover and positively holding it closed.
  • the valve may control a plurality of motors for operating a plurality of covers.
  • FIG. 1 is a schematic showing three railway cars in plan with a rub rail to actuate the center car by contact with a roller on the actuating lever carried on the car.
  • FIG. 2 is an enlarged top plan of one car showing a 3,476,042 Patented Nov. 4, 1969 single hatch cover, the cylinder and actuating mechanism in plan.
  • FIG. 3 is an enlarged fragment of FIG. 2 showing the actuating mechanism.
  • FIG. 4 is a section taken generally along line 4-4 of FIG. 3.
  • FIG. 5 is an enlarged section of the cylinder to open the hatch cover with the hatch cover in closed position.
  • FIG. 6 is a section similar to FIG. 5 with the hatch cover in open position.
  • FIG. 7 is a partial side elevation of the means for mounting the hatch cover for pivotal movement.
  • FIG. 8 is a schematic of an air system.
  • FIG. 9 is a top plan of another embodiment of the invention.
  • FIG. 10 is a side elevation of the embodiment shown in FIG. 9.
  • FIG. 1 shows three cars 10, 11, 12 of a train, the first two cars having a single continuous hatch 14, which is closed in car 10, and has an open cover 16 in car 11.
  • Car 12 has two elongated hatches with suitable covers 18, 20. The covers are shown connected by a plurality of straps 22 or 24 to torque tubes 26 or 28.
  • Each car has a valve actuating assembly 30 on the roof thereof, which is shown in simplified schematic form in FIGURE 1.
  • the actuating assembly 30 extends beyond the sides of the car to engage a trackside rail 32 which may be about as long as two or more cars and is located at the loading site. It may be assumed that the loading point is near the midpoint of rail 32. It is evident that other arrangements of trackside rails and actuating assemblies may be used.
  • Actuating assembly 30 includes bars 41 and 42 connected by plates 43, 44 to a center bar 46. The latter is fastened to a U-shaped bar 48 connected by tensioned springs 43, 50 to brackets 51, 52 on the roof.
  • the roof 40 has pockets 53, 54 into which bars 41 and 42 partly extend, and the outer ends of these bars are provided with rollers 55, 56 for engaging the trackside rail 32.
  • Brackets 57, 58 are welded to plates 59, 60 and pivotally support links 61, 62, which at their other end are pivotally connected to bars 41 and 42.
  • Link 62 is connected to a double sided cam 64 having a camming surface 66 engaging a roller 68 on an operator of a valve 70. Additional supporting brackets 72, 74 are provided for links 61, 62 and for cam 64 and plate 76.
  • Hatch cover 16 may have any suitable construction, as indicated in FIGURES 1, 2, 5 and 6. It may be Supported by bearings for torque tube 26 disposed therealong, as required.
  • a spur gear is fixed to tube 26 and is coupled to a gear sector 82 in a housing 84.
  • Gear 82 is pivoted on shaft 86 and has an arm 88 pivotally connected to piston rod 90 of air motor 92. The latter is itself pivotally mounted on bracket 94, so that moving piston rod 90 opens and closes the hatch.
  • the pneumatic circuit of the motor is shown in FIG- URE 8.
  • the train line supplies compressed air through globe valve 102 to a suitable reservoir 104.
  • the reservoir is connected to the input of four-way valve 70.
  • the valve has an exhaust port and two ports connected on opposite sides of piston 106 to cylinder portions marked CYL. 1 and CYL. 2.
  • Valve 70 is spring loaded and is arranged so that air pressure is maintained on the side of the cylinder which keeeps the hatch cover in a closed position, while the other side of the motor cylinder is connected to the valve exhaust port, and thus vented to the atmosphere.
  • FIGURES 9 and 10 shows an alternative valve actuator comprising a lever 110 having a fulcrum at 112 and spring wipers 113, 114.
  • Lever 110 is anchored to the car by return spring 116 and is provided with guides 117, 118 and stops 119, 120.
  • Valve 122 similar to valve 70, is positioned to be operated by lever 110 when one of the wipers 113 or 114 engages rub rail 32 and causes lever 110 to turn.
  • Valve 122 which is spring loaded then controls motor 92, as previously described in connection with FIGURE 8. It is evident that valve 122, like valve 70, may also be operated manually, as may be desired for inspection or other purposes.
  • the apparatus operates to open and close a hatch automatically for continuous loading.
  • the spring biased valve maintains pressure in the side of the motor cylinder which holds the piston 106 in the position which keeps the hatch closed.
  • trackside rail 32 moves valve actuator 30 or 110 and causes air valve 70 or 122 to reverse motor 92 and open the hatch cover.
  • pressure must be maintained on the valve actuator 30 or lever 110 to keep the hatch open.
  • the rub rail 32 is passed the hatch is closed.
  • Accidental bumping of the valve operating mechanism will not cause the hatch to open.
  • Rivett Model 2310 made by the Rivett Lathe & Grinder, Inc. of Boston, Mass. It will be evident that proper operation will still be obtained if one or more of cars is turned around. If the car has several hatch covers, as does car 12 in FIG. 1, the several motors are connected identically in parallel to air valve 70 in FIG. 8.
  • a railroad car having a body and a roof thereon and a hinged hatch cover on said roof; a motor on said car, including an air cylinder connected to said hatch cover for opening and closing said cover; valve means for said air cylinder mounted on said car for normally causing said motor to urge said hatch cover to its closed position; valve control means, including a movable actuating member extending transversely beyond the perimeter of the body of the car on both sides thereof; and a stationary trackside rail for engaging said actuating member for actuating said valve means to operate said motor to open said cover and hold it open only while the actuating member engages said rail.
  • the apparatus of claim 1 including a plurality of like hatch covers; a motor for each hatch cover connected to said valve means for opening or closing all said hatch covers together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Description

Nov. 4, 1969 J. L. CARNEY, JR., ET AL 3,476,042
APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS 6 Sheets-Sheet 1 Filed May 16, 1967 INVENTORS.
E 6 n w NW .1 C M ,.D R A m m JR ATTORNEY Nov. 4, 1969 CARNEY, R ET AL APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS Filed May 16, 1967 6 Sheets-Sheet 2 APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS 6 Sheets-Sheet 5 Filed May 16, 196" Nov. 4, 1969 J. L. CA'RNEY, JR, ET AL 3,476,042
APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS Filed May 16, 1961 6 Sheets-Sheet 4 Nov. 4, 1969 J. L. CARNEY, JR.. ET AL APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS 6 Sheets-Sheet 5 Filed May 16, 196'.
N QE
Mm ll n: f E m f .1. L. CARNEY, JR ET AL 3,476,042
APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS 196'? 6 Sheets-Sheet 6 Nov. 4, 1969 Filed Ma 16.
United States Patent "ice 3,476,042 APPARATUS FOR AUTOMATICALLY OPENING AND CLOSING HATCH COVERS John L. Carney, Jr., and Richard H. Dugge, St. Louis, Mo., assignors to ACF Industries, Incorporated, New York, N.Y., a corporation of New Jersey Filed May 16, 1967, Ser. No. 638,843 Int. Cl. B61d 17/16, 39/00 US. Cl. 105-377 2 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION Railroad cars of some types, such as covered hopper cars, have openings or hatches through which they are loaded. The hatches are provided with covers, the opening and closing of which may require a considerable amount of work and time. Means for automatically opening and closing hatch covers are shown in Patent 3,251,487 to P. F. Giesking. The present invention has many important advantages over prior apparatus. First, it is capable of opening very large hatches, without possible damage to the cover or trackside rail. The danger of an accidentally open hatch cover is practically obviated. The batch cover is held closed by a powered motor, and if a hatch cover is opened accidentally or manually, it is closed automatically and immediately by the motor. These features are important because an open hatch cover may be dangerous to the lading and also to personnel and the car itself. From an operational standpoint, automatic opening and closing of continuous hatch covers permit a train of cars to be loaded while they move slowly past a chute or loading point.
SUMMARY OF THE INVENTION The invention relates to a hatch cover or covers for a closed railroad car and particularly to mechanism for opening and closing a hatch cover automatically. The mechanism includes a compressed air motor, in the form of a cylinder and a piston connected to the cover, and controlled by a valve to keep the cover closed. A pivoted or shiftable bar is mounted on the roof of the car and extends beyond the sides of the car to engage a trackside rail which causes the bar to turn or slide and thereby move a valve operator. The valve, then, is operated to actuate the motor to its opposite position and thus open the hatch cover. The valve and motor remain in their operated position as long as the bar engages the trackside rail, and thereafter the valve and motor shift back to their normal positions, closing the hatch cover and positively holding it closed. The valve may control a plurality of motors for operating a plurality of covers.
BRIEF DESCRIPTION OF THE DRAWING The invention is illustrated in the accompanying drawing, of which:
FIG. 1 is a schematic showing three railway cars in plan with a rub rail to actuate the center car by contact with a roller on the actuating lever carried on the car.
FIG. 2 is an enlarged top plan of one car showing a 3,476,042 Patented Nov. 4, 1969 single hatch cover, the cylinder and actuating mechanism in plan.
FIG. 3 is an enlarged fragment of FIG. 2 showing the actuating mechanism.
FIG. 4 is a section taken generally along line 4-4 of FIG. 3.
FIG. 5 is an enlarged section of the cylinder to open the hatch cover with the hatch cover in closed position.
FIG. 6 is a section similar to FIG. 5 with the hatch cover in open position.
FIG. 7 is a partial side elevation of the means for mounting the hatch cover for pivotal movement.
FIG. 8 is a schematic of an air system.
FIG. 9 is a top plan of another embodiment of the invention.
FIG. 10 is a side elevation of the embodiment shown in FIG. 9.
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows three cars 10, 11, 12 of a train, the first two cars having a single continuous hatch 14, which is closed in car 10, and has an open cover 16 in car 11. Car 12 has two elongated hatches with suitable covers 18, 20. The covers are shown connected by a plurality of straps 22 or 24 to torque tubes 26 or 28. Each car has a valve actuating assembly 30 on the roof thereof, which is shown in simplified schematic form in FIGURE 1. The actuating assembly 30 extends beyond the sides of the car to engage a trackside rail 32 which may be about as long as two or more cars and is located at the loading site. It may be assumed that the loading point is near the midpoint of rail 32. It is evident that other arrangements of trackside rails and actuating assemblies may be used.
Referring particularly to FIGURES 3 and 4, the hatch 14- is in the middle of a curved roof 40. Actuating assembly 30 includes bars 41 and 42 connected by plates 43, 44 to a center bar 46. The latter is fastened to a U-shaped bar 48 connected by tensioned springs 43, 50 to brackets 51, 52 on the roof. The roof 40 has pockets 53, 54 into which bars 41 and 42 partly extend, and the outer ends of these bars are provided with rollers 55, 56 for engaging the trackside rail 32. Brackets 57, 58 are welded to plates 59, 60 and pivotally support links 61, 62, which at their other end are pivotally connected to bars 41 and 42. Link 62 is connected to a double sided cam 64 having a camming surface 66 engaging a roller 68 on an operator of a valve 70. Additional supporting brackets 72, 74 are provided for links 61, 62 and for cam 64 and plate 76.
Hatch cover 16 may have any suitable construction, as indicated in FIGURES 1, 2, 5 and 6. It may be Supported by bearings for torque tube 26 disposed therealong, as required. A spur gear is fixed to tube 26 and is coupled to a gear sector 82 in a housing 84. Gear 82 is pivoted on shaft 86 and has an arm 88 pivotally connected to piston rod 90 of air motor 92. The latter is itself pivotally mounted on bracket 94, so that moving piston rod 90 opens and closes the hatch.
The pneumatic circuit of the motor is shown in FIG- URE 8. The train line supplies compressed air through globe valve 102 to a suitable reservoir 104. The reservoir is connected to the input of four-way valve 70. The valve has an exhaust port and two ports connected on opposite sides of piston 106 to cylinder portions marked CYL. 1 and CYL. 2. Valve 70 is spring loaded and is arranged so that air pressure is maintained on the side of the cylinder which keeeps the hatch cover in a closed position, while the other side of the motor cylinder is connected to the valve exhaust port, and thus vented to the atmosphere.
FIGURES 9 and 10 shows an alternative valve actuator comprising a lever 110 having a fulcrum at 112 and spring wipers 113, 114. Lever 110 is anchored to the car by return spring 116 and is provided with guides 117, 118 and stops 119, 120. Valve 122, similar to valve 70, is positioned to be operated by lever 110 when one of the wipers 113 or 114 engages rub rail 32 and causes lever 110 to turn. Valve 122, which is spring loaded then controls motor 92, as previously described in connection with FIGURE 8. It is evident that valve 122, like valve 70, may also be operated manually, as may be desired for inspection or other purposes.
From the above description and the drawings, it will be obvious to those skilled in the art that the apparatus operates to open and close a hatch automatically for continuous loading. Normally the spring biased valve maintains pressure in the side of the motor cylinder which holds the piston 106 in the position which keeps the hatch closed. When a car reaches the loading site, trackside rail 32 moves valve actuator 30 or 110 and causes air valve 70 or 122 to reverse motor 92 and open the hatch cover. As the air valve is spring loaded, pressure must be maintained on the valve actuator 30 or lever 110 to keep the hatch open. Hence, when the rub rail 32 is passed the hatch is closed. Accidental bumping of the valve operating mechanism will not cause the hatch to open. Four way air valves are well known and a suitable example is Rivett Model 2310 made by the Rivett Lathe & Grinder, Inc. of Boston, Mass. It will be evident that proper operation will still be obtained if one or more of cars is turned around. If the car has several hatch covers, as does car 12 in FIG. 1, the several motors are connected identically in parallel to air valve 70 in FIG. 8.
Since variations and modifications of the disclosed embodiments are within the purview of the invention, the disclosure should only be considered illustrative of the invention, the scope of which is defined in the following claims.
What is claimed is:
1. A railroad car having a body and a roof thereon and a hinged hatch cover on said roof; a motor on said car, including an air cylinder connected to said hatch cover for opening and closing said cover; valve means for said air cylinder mounted on said car for normally causing said motor to urge said hatch cover to its closed position; valve control means, including a movable actuating member extending transversely beyond the perimeter of the body of the car on both sides thereof; and a stationary trackside rail for engaging said actuating member for actuating said valve means to operate said motor to open said cover and hold it open only while the actuating member engages said rail.
2. The apparatus of claim 1, including a plurality of like hatch covers; a motor for each hatch cover connected to said valve means for opening or closing all said hatch covers together.
References Cited UNITED STATES PATENTS 1,665,483 4/1928 Taylor 105-341 2,899,912 8/1959 Janeczko 105-377 3,194,183 7/1965 Schwartz et a1. 105-377 3,235,104 2/1966 Morawski et al 214-42 3,374,908 3/1968 Giesking 214-42 ARTHUR L. LA POINT, Primary Examiner R. A. BERTSCH, Assistant Examiner
US638843A 1967-05-16 1967-05-16 Apparatus for automatically opening and closing hatch covers Expired - Lifetime US3476042A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63884367A 1967-05-16 1967-05-16

Publications (1)

Publication Number Publication Date
US3476042A true US3476042A (en) 1969-11-04

Family

ID=24561684

Family Applications (1)

Application Number Title Priority Date Filing Date
US638843A Expired - Lifetime US3476042A (en) 1967-05-16 1967-05-16 Apparatus for automatically opening and closing hatch covers

Country Status (1)

Country Link
US (1) US3476042A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4377058A (en) * 1980-09-09 1983-03-22 United American Car Co. Curved hopper car roof
USRE32189E (en) * 1979-07-10 1986-06-24 Richmond Tank Car Company Railway hopper car roof support structure
FR2745774A1 (en) * 1996-03-11 1997-09-12 Joigny Atel Manual opening mechanism for lid of tanker
US6293051B1 (en) 2000-02-21 2001-09-25 Dcl, Inc. Automated hatch
US6352036B1 (en) 1998-12-09 2002-03-05 Aerd Transportation Products, Inc. Pneumatic actuator for railroad car covers
US7264296B1 (en) 2005-06-28 2007-09-04 Fieldale Farms Corporation Feed truck compartment lid control system
US20080078127A1 (en) * 2006-10-02 2008-04-03 Simon Christopher Hill Manhole system
CN102519740A (en) * 2011-12-23 2012-06-27 青岛四方车辆研究所有限公司 Tubing unit box and hood opening-closing mechanism test bed
US20140360401A1 (en) * 2010-11-17 2014-12-11 Trinity Industries, Inc. System and Method for Powered Railcar Doors
US10222089B2 (en) 2014-10-28 2019-03-05 T.A. Morrison & Co. Inc. Damper with integrated blade stop
USD905597S1 (en) 2018-04-26 2020-12-22 Standard Car Truck Company Railroad car combined vented hatch cover protector and gasket
WO2021155075A1 (en) * 2020-01-31 2021-08-05 Taylor Fred Joseph Automatic hatch cover for a container and methods of operation thereof
US11268301B2 (en) 2017-04-27 2022-03-08 Reinhard Matye Automatic hatch for bulk material containers
US11548536B1 (en) 2018-04-26 2023-01-10 Transportation Ip Holdings, Llc Railroad car vented hatch cover assembly including a replaceable combined vented hatch cover protector and gasket
WO2023021334A1 (en) * 2021-08-19 2023-02-23 Ecofab Covers International Inc. Direct drive automated hatch system for hopper railcars
WO2023218434A1 (en) * 2022-05-13 2023-11-16 Ecofab Covers International, Inc. Improved automatic hatch system for trough loaded hopper railcars

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665483A (en) * 1926-12-13 1928-04-10 Herman E Taylor Transportation system
US2899912A (en) * 1959-08-18 Top loading boxcar
US3194183A (en) * 1962-10-24 1965-07-13 Union Tank Car Co Vehicle hatch cover
US3235104A (en) * 1963-05-10 1966-02-15 Erie Mining Co Apparatus for loading cars
US3374908A (en) * 1963-05-24 1968-03-26 Pickands Mather & Co System for loading train of cars with solid fluent material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899912A (en) * 1959-08-18 Top loading boxcar
US1665483A (en) * 1926-12-13 1928-04-10 Herman E Taylor Transportation system
US3194183A (en) * 1962-10-24 1965-07-13 Union Tank Car Co Vehicle hatch cover
US3235104A (en) * 1963-05-10 1966-02-15 Erie Mining Co Apparatus for loading cars
US3374908A (en) * 1963-05-24 1968-03-26 Pickands Mather & Co System for loading train of cars with solid fluent material

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32189E (en) * 1979-07-10 1986-06-24 Richmond Tank Car Company Railway hopper car roof support structure
US4377058A (en) * 1980-09-09 1983-03-22 United American Car Co. Curved hopper car roof
FR2745774A1 (en) * 1996-03-11 1997-09-12 Joigny Atel Manual opening mechanism for lid of tanker
US6352036B1 (en) 1998-12-09 2002-03-05 Aerd Transportation Products, Inc. Pneumatic actuator for railroad car covers
US6293051B1 (en) 2000-02-21 2001-09-25 Dcl, Inc. Automated hatch
US7264296B1 (en) 2005-06-28 2007-09-04 Fieldale Farms Corporation Feed truck compartment lid control system
US20080078127A1 (en) * 2006-10-02 2008-04-03 Simon Christopher Hill Manhole system
US7658570B2 (en) * 2006-10-02 2010-02-09 Delaware Captial Formation, Inc. Manhole system
US20140360401A1 (en) * 2010-11-17 2014-12-11 Trinity Industries, Inc. System and Method for Powered Railcar Doors
US9643625B2 (en) * 2010-11-17 2017-05-09 Trinity Industries, Inc. System and method for powered railcar doors
CN102519740B (en) * 2011-12-23 2014-06-25 青岛四方车辆研究所有限公司 Tubing unit box and hood opening-closing mechanism test bed
CN102519740A (en) * 2011-12-23 2012-06-27 青岛四方车辆研究所有限公司 Tubing unit box and hood opening-closing mechanism test bed
US10222089B2 (en) 2014-10-28 2019-03-05 T.A. Morrison & Co. Inc. Damper with integrated blade stop
US11268301B2 (en) 2017-04-27 2022-03-08 Reinhard Matye Automatic hatch for bulk material containers
USD905597S1 (en) 2018-04-26 2020-12-22 Standard Car Truck Company Railroad car combined vented hatch cover protector and gasket
US11548536B1 (en) 2018-04-26 2023-01-10 Transportation Ip Holdings, Llc Railroad car vented hatch cover assembly including a replaceable combined vented hatch cover protector and gasket
WO2021155075A1 (en) * 2020-01-31 2021-08-05 Taylor Fred Joseph Automatic hatch cover for a container and methods of operation thereof
US11505220B1 (en) 2020-01-31 2022-11-22 Fred Joseph Taylor Automatic hatch cover for a container and methods of operation thereof
WO2023021334A1 (en) * 2021-08-19 2023-02-23 Ecofab Covers International Inc. Direct drive automated hatch system for hopper railcars
WO2023218434A1 (en) * 2022-05-13 2023-11-16 Ecofab Covers International, Inc. Improved automatic hatch system for trough loaded hopper railcars

Similar Documents

Publication Publication Date Title
US3476042A (en) Apparatus for automatically opening and closing hatch covers
US3786764A (en) Rapid discharge hopper car
US4628825A (en) Sliding gate actuating mechanism
CA1082524A (en) Door operating mechanism for hopper cars
US3316857A (en) Motor actuated closure mechanism for railway hopper cars
US3295704A (en) Automatic unloader for hopper cars
US3631812A (en) Flexible hopper closure actuating mechanism
US3789772A (en) Hopper car door operating and locking mechanism
US2925049A (en) Intercommunication passage for railway coaches
US3166024A (en) Pneumatically operated closure for drop-bottom hopper car
US3656437A (en) Hopper car door actuating mechanism
GB2104021A (en) Sliding walls of vehicles or containers, in particular railway freight wagons
US3080075A (en) Automatic car dumping apparatus
US20050263032A1 (en) Mechanism for selectively operating hopper doors of a railroad car
US1715307A (en) Freight box car
US3090429A (en) Flap cover devices for closing open spaces such as shiphold hatchways, railway cars, and the like
US1267363A (en) Discharge-door-operating mechanism.
RU219982U1 (en) HOPPER CAR UNLOADING MECHANISM
US3765341A (en) Sequential cam automatic railway hooper car door actuating mechanism
US1050937A (en) Safety appliance for railway-platforms.
US1767013A (en) Unloading device
US1027828A (en) Station-platform for railways.
US1027107A (en) Station-platform for railways.
US4014578A (en) Variable metering drop valve
US1077299A (en) Hopper-car.

Legal Events

Date Code Title Description
AS Assignment

Owner name: NATIONAL WESTMINSTER BANK USA, A NATIONAL BANKING

Free format text: SECURITY INTEREST;ASSIGNOR:ACF INDUSTRIES, INCORPORATED;REEL/FRAME:004307/0396

AS Assignment

Owner name: ACF INDUSTRIES, INCORPORATED, 750 THIRD AVENUE, NE

Free format text: RECONVEYS ALL LETTERS PATENTS BACK TO BORROWER RECITED IN REEL 4307FRAMES 396 AND 397 RECORED OCT. 2, 1984 (LOAN HAS BEEN PAID IN FULL);ASSIGNOR:NATIONAL WESTMINSTER BANK USA, AS AGENT;REEL/FRAME:004365/0266

Effective date: 19841220