Abstract: A paving machine includes an engine assembly, a hopper to receive or store paving material, and a tank to store and dispense emulsion fluid. The tank is positioned between the engine assembly and the hopper.

Abstract: Embodiments of the present disclosure a system for capturing proppant dust particles when positioned at a fracking operation site including a proppant delivery assembly to receive one or more containers having proppant stored therein. The system dispenses the proppant from the one or more containers and delivers the proppant to other fracking operation equipment. Moreover, the system includes a dust collection assembly positioned proximate and associated with the proppant delivery assembly to capture dust particles released by movement and settling of the proppant when being dispensed and delivered by the proppant delivery assembly. The dust collection assembly is positioned to direct an air flow in a flow path overlying the dust particles to capture the dust particles and move the dust particles away from the proppant thereby reducing risk of dust exposure to fracking operation site personnel.

Abstract: A discharge assembly for a bulk materials rail wagon includes a closure assembly movable to open and close an opening. The closure member includes a cover member and stiffener having a web and flange. In one form an upper surface of the flange is raked. In one form the edge of the stiffener web extends along a concave path to reduce stress concentration in the closure member.

Abstract: A low profile discharge gate assembly having a frame defining a discharge opening and including a gate slidably mounted on the frame for controlling the discharge of commodity through the gate assembly. Structure carried by and extending inwardly from three sides of the frame is arranged beneath a lower surface on the gate and boot flanges defined by the gate assembly frame further restrict the flow of commodity from the gate assembly. Less than 7.5 vertical inches separates a lower surface on the boot flanges from an upper surface on the mounting flanges of the gate assembly frame. An operating shaft assembly selectively controls movement of the gate between open an closed positions. Support structure further enhances rigidity and support for an end frame member through which the gate slidably moves.

Abstract: A low profile discharge gate assembly including a rigid frame defining a generally rectangular discharge opening and a gate slidably mounted on the frame for controlling discharge of commodity from the gate assembly. Structure carried by and extending inwardly from the frame is arranged between a lower surface on the gate and boot flanges defined by the gate assembly frame for restricting the flow of commodity from the gate assembly. A vertical distance of less than 7.5 inches separates the boot flanges from mounting flanges on the gate assembly frame whereby permitting a conventional unloading sled to fit under the gate assembly to discharge commodity therefrom. An operating shaft assembly selectively controls movement of the gate between open and closed positions. A lock assembly is also provided for inhibiting inadvertent movement of the gate from the closed position toward the open position.

Abstract: A low profile discharge gate assembly having a frame defining a discharge opening and including a gate slidably mounted on the frame for controlling the discharge of commodity through the gate assembly. Structure carried by and extending inwardly from three sides of the frame is arranged beneath a lower surface on the gate and boot flanges defined by the gate assembly frame further restrict the flow of commodity from the gate assembly. Less than 7.5 vertical inches separates a lower surface on the boot flanges from an upper surface on the mounting flanges of the gate assembly frame. An operating shaft assembly selectively controls movement of the gate between open an closed positions. Support structure further enhances rigidity and support for an end frame member through which the gate slidably moves.

Abstract: A hopper car gate having a frame, a moveable door supported by the frame, and a set of walls coupled with the frame. The walls have a lower edge partially spaced above the door, and are positioned to define a vacuum chamber between the walls and the frame. The vacuum chamber is in fluid communication with a vacuum opening formed in the frame. A vacuum adapter configured for mounting on a hopper car gate. The adapter has first and second sets of walls with a vacuum chamber between the sets of walls. The vacuum chamber is in fluid communication with a vacuum opening in the first set of walls.

Abstract: A hatch assembly for use with a railway hopper car. The railway hopper car includes sidewalls, end walls, and bottom walls for defining an interior volume. The bottom walls define a cargo well that has an opening for discharging materials transported by the hopper car. The hatch assembly includes a support frame that is coupled proximate to a bottom of the cargo well. A hatch is slideably coupled to the support frame. The hatch is moveable between a closed position and an open position for selectively covering the cargo well opening. A hatch positioning system including a drive shaft that is coupled to the support frame, a locking assembly that is coupled to the drive shaft and is configured to selectively engage a locking bar, a positioning assembly that is coupled to the drive shaft, and a drive assembly that is coupled to the drive shaft.

Abstract: A model vehicle, such as a model electric train, includes a model automatic door. The operation of the door is automated using a motor, drive train, and control circuit. A drive mechanism moves the door between open and closed positions. In the open position, the door is displaced laterally along and displaced outwardly of the body of the train car to expose a door opening. In the closed position, the door is substantially flush with the body of the car and covers the door opening. The control circuit permits automatic operation of the door and provides various features for enhancing realism of the operating model.

Abstract: A hopper car gate with a curved door for discharging cargo from a hopper car. The gate has coupled side walls and end walls which present a top opening, bottom opening, and upper surface surrounding the top opening and adapted to be joined to the hopper car. A curved rail extends between and is coupled with the end walls adjacent the bottom opening. A curved door is supported on the rail. The door is moveable between a closed position which blocks the bottom opening and an open position which allows the cargo to exit through the bottom opening.

Abstract: A hopper car gate with opposed double doors for discharging cargo from a hopper car. The gate has joined side walls and end walls which present top and bottom openings. A flange joined to the walls adjacent the top opening is adapted to be joined to the hopper car. A rail extends between opposite walls adjacent the bottom opening. First and second doors are supported on the rail. The doors are moveable in opposite directions between a closed position which blocks the bottom opening and an open position which allows the cargo to exit through the opening.

Abstract: A railcar operating shaft assembly mounted on a gate assembly frame for moving a gate between closed and open positions. The operating shaft assembly includes an operating shaft and a capstan assembly provided at each end of the operating shaft. Each capstan assembly includes first and second axially aligned and conjoined but separate members. The first member is releasably coupled in non-rotatable relation relative to a free end of the operating shaft and is mountable on the gate assembly frame for rotation about a fixed axis. The second member of each capstan assembly is releasably conjoined in non-rotatable relation relative to the first member such that rotational movements imparted to the second member are transferred to the first member and to the operating shaft coupled thereto.

Abstract: A hopper car having an increased volume. The car has side walls, end walls, a bottom, and first and second sloping surfaces. The bottom lies at least partially in a horizontal plane and includes a plurality of spaced apart openings. The side walls, end walls, and horizontal plane define a volume X. The first and second sloping surfaces are located between adjacent openings and joined to the bottom adjacent the openings. The sloping surfaces extend upwardly from the bottom to present an inverted V enclosing a volume Y. The volume Y is no more than approximately 1 to 5% of the volume X.

Abstract: A hopper car gate for discharging cargo from a hopper car having a length greater than its width. The gate has opposed generally upright side walls and opposed generally upright end walls coupled with the side walls. The coupled walls present a top opening and a bottom opening. A first rail extends between and is coupled with the side walls adjacent the bottom opening. A first door is supported on the first rail and is moveable in a direction that is perpendicular to the length of the hopper car that the gate is joined with between a closed position which blocks the bottom opening and an open position which allows cargo to exit through the bottom opening.

Abstract: A lock assembly for a railcar gate assembly including a frame defining a discharge opening, a gate mounted on said frame for sliding movements along a predetermined path of travel between open and closed positions and relative to the discharge opening, and a drive mechanism for moving and movable with the gate between the open and closed positions thereof. The lock assembly includes a stop mounted for movement between locking and unlocking conditions. At least a portion of the stop extends into the path of travel of the gate when in the locking condition thereby operably preventing inadvertent movement of the gate from the closed position toward the open position. The stop is selectively movable into the unlocking condition whereby allowing the gate to be moved toward the open position from the closed position. The lock assembly further includes a spring biased mechanism for positively maintaining the stop in the unlocking condition until after the gate moves a predetermined distance from the closed position.

Abstract: A lock assembly kit including components capable of being assembled to a railcar gate assembly including a frame defining a discharge opening and having a pair of generally parallel, free ended and stationary rigid racks extending from one end of the frame away from said discharge opening, a gate mounted on said frame for sliding movements along a predetermined path of travel between open and closed positions and relative to the discharge opening, and a drive mechanism for moving and movable with the gate between the open and closed positions thereof. The lock assembly kit includes a control shaft mounted adjacent the free ends of the racks and which is provided with operating handles radially extending from and secured to the control shaft. A stop mounted for movement between locking and unlocking conditions. The stop extends into the path of travel of the gate when in the locking condition thereby operably preventing inadvertent movement of the gate from the closed position toward the open position.

Abstract: An outlet gate assembly has upper and lower gate assemblies with independent drive mechanisms to open and close the gates. The drive mechanisms may be rack and pinion drives. The racks for the lower gate do not enter the gate cavity. The outlet gate assembly can be used for vacuum, gravity or pneumatic sled discharge. The vacuum openings are offset from the center plane of the discharge area to allow free flow of lading. The lower gate assembly includes surfaces that cover and protect the lowermost horizontal surfaces of the assembly when the lower gate assembly is closed. Thus, no separate mud plate is needed. The outlet gate assembly includes seals made of an ultra high molecular weight polymer.

Abstract: A railcar door assembly includes a drive mechanism operably connected to elongated support members for selectively imparting rotational movement thereto, and a anti-spin/anti-drift mechanism for preventing movement of the drive mechanism beyond defined limits. The drive mechanism includes a gear segment mounted on a bearing plate, and the anti-spin/anti-drift mechanism is comprised of a shaft, a pair of ratchets at opposing ends of the shaft, and a pinion disposed on the shaft between the ratchets with the pinion engaging the gear segment. The pinion is rotated until it engages one of the ratchets for permitting the door to move to a fully opened position and preventing it from moving to a closed position. This arrangement effectively prevents undesired drifting of the door into the side of the railcar itself.

Abstract: A gate assembly for a railroad hopper car is disclosed. The gate assembly includes a frame defining a discharge opening, a slidable door mounted on the frame for movement between a closed position, wherein the door closes the discharge opening, and an open position, wherein the door is positioned to allow commodity to pass through the discharge opening. Either of two modular components can be arranged in combination with the door on the gate assembly to allow the gate assembly to be conditioned for either pneumatic and/or gravitational discharge or gravitational discharge only of commodity from the gate assembly. A drive mechanism including an apparatus for selectively engaging either the door or either of the modular elements arranged in association with the door is mounted on the frame of the gate assembly, with the apparatus of the drive mechanism preferably being lost motion connected to the door.

Abstract: A gate assembly for a railroad hopper car is disclosed. The gate assembly includes a frame defining a discharge opening, a slidable door mounted on the frame for movement between a closed position, wherein the door closes the discharge opening, and an open position, wherein the door is positioned to allow commodity to pass through the discharge opening. Either of two modular components can be arranged in combination with the door on the gate assembly to allow the gate assembly to be conditioned for either pneumatic and/or gravitational discharge or gravitational discharge only of commodity from the gate assembly. A drive mechanism including an apparatus for selectively engaging either the door or either of the modular elements arranged in association with the door is mounted on the frame of the gate assembly, with the apparatus of the drive mechanism preferably being lost motion connected to the door.

Abstract: A sliding door is provided for use on a rail car having a floor and a side wall with an opening therein along one side of the floor. The opening is defined by a pair of side posts having respective front surface and a top and bottom sill. The front surfaces of the side posts define a sealing surface lying in a common vertical sealing plane with respective sealing surfaces of the top and bottom sill. The door is slidable on rails between an open position and a closed position across the opening. Pivotal mounting members mount the door on the rails for movement of the door in the closed position transversely to the rails and inwardly toward the opening from an outer sliding position to an inner sealed position. The door includes two side beams, a top beam and a bottom beam, each having a surface within a common plane for sealing with the respective sealing surface in the common vertical sealing plane of the opening.

Abstract: A gate assembly for a railroad hopper car is disclosed. The gate assembly includes a frame defining a discharge opening, a slidable door mounted on the frame for movement between a closed position, wherein the door closes the discharge opening, and an open position, wherein the door is positioned to allow commodity to pass through the discharge opening. Either of two modular components can be arranged in combination with the door on the gate assembly to allow the gate assembly to be conditioned for either pneumatic and/or gravitational discharge or gravitational discharge only of commodity from the gate assembly. A drive mechanism including an apparatus for selectively engaging either the door or either of the modular elements arranged in association with the door is mounted on the frame of the gate assembly, with the apparatus of the drive mechanism preferably being lost motion connected to the door.