Abstract: A pivoting door assembly for a downdraft cutting table assembly includes a door for covering a vent of the downdraft cutting table assembly, and an arm assembly coupled to the door. The downdraft cutting table assembly may include a cutting table for supporting a workpiece, a cutting torch assembly for positioning a cutting torch for cutting the workpiece, an exhaust duct for exhausting fumes, and a vent opening into the exhaust duct. The downdraft cutting table assembly may also include a slag removal system. The arm assembly is actuated by the cutting torch assembly as the cutting torch assembly positions the cutting torch over the cutting table. Actuation of the arm assembly by the cutting torch assembly causes the arm assembly to pivot the door open for allowing fumes from the cutting torch to be drawn into the exhaust duct.

Abstract: A pivoting door assembly for a downdraft cutting table assembly includes a door For covering a vent of the downdraft cutting table assembly, and an arm assembly coupled to the door. The downdraft cutting table assembly may include a cutting table for supporting a workpiece, a cutting torch assembly for positioning a cutting torch for cutting the workpiece, an exhaust duct for exhausting fumes, and a vent opening into the exhaust duct. The downdraft cutting table assembly may also include a slag removal system. The arm assembly is actuated by the cutting torch assembly as the cutting torch assembly positions the cutting torch over the cutting table. Actuation of the arm assembly by the cutting torch assembly causes the arm assembly to pivot the door open for allowing fumes from the cutting torch to be drawn into the exhaust duct.

Abstract: A downdraft cutting table assembly includes a cutting table having a top surface for supporting a workpiece, and first and second side wall assemblies for supporting the top surface. The cutting table is comprised of table sections. First and second rail assemblies are mounted to the side wall assemblies for mounting a cutting torch assembly, which moves along the rail assemblies for cutting the workpiece. Partitions defining ventilation zones extend beneath the top surface. An exhaust duct having a vent associated with a ventilation zone is included for exhausting fumes produced when cutting the workpiece proximal to the ventilation zone. A pivoting door assembly having a door and an arm assembly is included for covering the vent. The arm assembly is actuated by the cutting torch assembly and pivots the door open, allowing the fumes to be drawn into the exhaust duct.

Abstract: A downdraft exhaust cutting table comprising an elongated cutting table having a cutting torch positioned thereover and which is movable along the length thereof to cut material positioned on the cutting table. An elongated exhaust duct is positioned beneath the cutting table and runs parallel to the length of the cutting table. The exhaust duct has a plurality of horizontally spaced-apart exhaust openings formed therein which close by a movable damper. In one embodiment, successive dampers are opened as a slag collection bucket moves along the length of the cutting table below the cutting torch. In a second embodiment, a plurality of ventilation zones are created by pivotal gates extending laterally outwardly from the exhaust duct and which are pivotally movable to permit slagger to pass therethrough.

Abstract: A railway car yaw control device includes a housing mounted on the upper surface of a truck bolster with an engagement member biased upwardly from the housing into engagement with a depression formed in a wear plate attached to the bottom of a car body.

Abstract: A railway car truck side bearing includes a housing mounted on the upper surface of a truck bolster with an engagement member biased upwardly from the housing into engagement with a depression formed in a wear plate attached to the bottom of a car body. A carriage is affixed to the bottom of the top plate and supports two stacks of disk springs under an engagement member support member to bias the support member and the engagement member upwardly into the top plate aperture. A pair of elastomeric blocks are located on opposite sides of the carriage, between the top plate and the housing bottom, within the housing, to act as shock absorbers for the top plate.