Abstract: A slack adjuster for narrow gauge rail cars including a housing having a body with a first clevis joint, a coupling secured to the body, and a guide tube secured to the body coupling. A lever is pivotally coupled to the housing for moving an actuator coupled to a clutch. The clutch is engaged with the external threads of a rod and moveable between a first captured position, a second position where the clutch is free to rotate, and a second captured position to selectively control movement of the rod. Movement of the lever withdraws the actuator so that the clutch releases and can spin, allowing the threaded rod to translate from the retracted to extended positions. Opposing forces applied to a ram causes the clutch to move to the second captured position, thereby preventing rotation of the clutch and preventing the threaded rod from retracting further into the housing.

Abstract: A sequencing valve for an automatic parking brake. The sequencing valve has a housing with a first port for communication with a source of a brake pipe pressure, a second port for communication with an exhaust, and a third port for communication with a brake pipe pressure input of an automatic parking brake. A valve body in the housing is moveable to either isolate the brake pipe pressure from the input to the parking brake, or couple brake pipe pressure to the input so that the parking brake may be released. A pilot is interconnected to the valve body for moving the valve body from the first position to the second position and can be driven by a charging and partial release of brake pipe pressure, charging of brake cylinder pressure, or a pneumatic signal provided by an electrical or a pneumatic control valve.

Abstract: A sequencing valve for an automatic parking brake. The sequencing valve has a housing with a first port for communication with a source of a brake pipe pressure, a second port for communication with an exhaust, and a third port for communication with a brake pipe pressure input of an automatic parking brake. A valve body in the housing is moveable to either isolate the brake pipe pressure from the input to the parking brake, or couple brake pipe pressure to the input so that the parking brake may be released. A pilot is interconnected to the valve body for moving the valve body from the first position to the second position and can be driven by a charging and partial release of brake pipe pressure, charging of brake cylinder pressure, or a pneumatic signal provided by an electrical or a pneumatic control valve.

Abstract: A slack adjuster for narrow gauge rail cars including a housing having a body with a first clevis joint, a coupling secured to the body, and a guide tube secured to the body coupling. A lever is pivotally coupled to the housing for moving an actuator coupled to a clutch. The clutch is engaged with the external threads of a rod and moveable between a first captured position, a second position where the clutch is free to rotate, and a second captured position to selectively control movement of the rod. Movement of the lever withdraws the actuator so that the clutch releases and can spin, allowing the threaded rod to translate from the retracted to extended positions. Opposing forces applied to a ram causes the clutch to move to the second captured position, thereby preventing rotation of the clutch and preventing the threaded rod from retracting further into the housing.

Abstract: A slack adjuster that is protected against environmental contaminants via a series of holes positioned circumferentially around each end and covered by a sleeve having a slot is aligned with one of the series of holes while covering the remaining holes. The sleeve protects against infiltration of contaminants at the ends of the slack adjuster and allows any contaminants that do infiltrate the slack adjuster to be expelled through the aligned hole and slot. The central portion of the slack adjuster may also be protected by including a series of circumferential holes that are selectively covered by a sleeve having a drain positioned to align with the lowest holes while covering the remaining holes.

Abstract: A slack adjuster that is protected against environmental contaminants via a series of holes positioned circumferentially around each end and covered by a sleeve having a slot is aligned with one of the series of holes while covering the remaining holes. The sleeve protects against infiltration of contaminants at the ends of the slack adjuster and allows any contaminants that do infiltrate the slack adjuster to be expelled through the aligned hole and slot. The central portion of the slack adjuster may also be protected by including a series of circumferential holes that are selectively covered by a sleeve having a drain positioned to align with the lowest holes while covering the remaining holes.

Abstract: A separator drum for a separator having a vertical rotational axis. The separator drum includes an upper drum section, a lower drum section, and a screw connection formed between the upper end lower drum sections without a locking ring. The upper drum section is screwed into the lower drum section or the lower drum section is screwed into the upper drum section.

Abstract: An actuator responsive to fluid signals to retract and extend a piston. The actuator includes a cylinder and a pressure piston carried inside the cylinder. Also included is a shaft, and a rod connected to the pressure piston. The actuator further includes a first port for receiving a fluid pressure to move the pressure piston to a first position. The actuator also has a locking mechanism. The locking mechanism has a first and second surface, and both surfaces are movable in response to the fluid pressure at the first port. The surfaces lock the pressure piston in a first position upon removal of the fluid pressure at the first port.