Railroad car derailment safety device

A railway safety device in operative engagement with a railway car air-brake system for actuating the air-brake system upon derailment of said railway car, and for gradually reducing air pressure in said air-brake system at a controlled air flow rate, comprising:

• an elongated bar extension disposed below the bottom of a railway car and operatively engagable with an air pressure conduit of an air-brake safety system of said railway car, said bar extension located above a rail of a railway system and designed to impact against said rail upon a derailment of said railway car;
• a gradual, controlled air release trip valve mechanism disposed within said air pressure conduit, said gradual, controlled air release trip valve mechanism being movable between a sealed position within said air pressure conduit and an unsealed position;
• biasing means disposed adjacent said gradual, controlled air release trip valve mechanism for urging said gradual, controlled air release trip valve mechanism into its sealed position;
• and
• guide means for guiding said elongated bar extension into contact with said gradual, controlled air release trip valve mechanism for forcing said gradual, controlled air release trip valve mechanism into its unsealed position to gradually release air pressure in said air pressure conduit at a controlled rate, when the railway car is caused to derail and said elongated bar extension is caused to contact said rail.

A railway safety device in operative engagement with a railway car air-brake system for actuating the air-brake system upon derailment of said railway car, and for gradually decreasing air pressure in said air-brake system, comprising:

• an elongated extension disposed below a railway car and operatively disposed within an air pressure conduit of an air-brake safety system of said railway car;
• a trip valve mechanism disposed within said air pressure conduit, said trip valve mechanism being movable between a sealed position within said air pressure conduit and a unsealed position;
• biasing means disposed adjacent said trip valve mechanism for urging said trip valve mechanism into its sealed position;
• guide means for guiding said elongated extension into contact with said trip valve mechanism for forcing said trip valve mechanism into its unsealed position to gradually release air pressure in said air pressure conduit when the railway car is caused to derail and said elongated extension is caused to contact a rail;
• means defining a guide slot disposed in said guide means, said guide slot for receiving a safety release pin, and having a locking aperture for locking upward travel of the safety release pin;
• and
• a safety release pin removably disposed in said elongated extension and extending through to said guide means, said safety release pin disposed for upward movement in said guide slot as said elongated extension is forced upwardly during a derailment, said locking aperture capturing said safety release pin at its uppermost position, thus locking the elongated extension into an upper valve release position for unsealing said valve.

A railway safety device in operative engagement with a railway car air-brake system for actuating the air-brake system upon derailment of said railway car, and for gradually reducing air pressure in said air-brake system, comprising:

• detection means comprising an elongated bar extension disposed below the bottom of a railway car and operatively engageable with an air pressure conduit of an air-brake safety system of said railway car, said detection means located above a rail of a railway system and designed to impact against said rail upon a derailment of said railway car;
• a trip valve mechanism disposed within said air pressure conduit, said trip valve mechanism being movable between a sealed position within said air pressure conduit and an unsealed position;
• biasing means disposed adjacent said trip valve mechanism for urging said trip valve mechanism into its sealed position;
• guide means for guiding said elongated bar extension into contact with said trip valve mechanism for forcing said trip valve mechanism into its unsealed position to gradually release air pressure in said air pressure conduit when the railway car is caused to derail and said elongated bar extension is caused to contact said rail;
• means defining a guide slot disposed in said air guide means, said guide slot for receiving a safety release pin and having a locking aperture for limiting upward motion of the safety release pin;
• and
• a safety release pin removably disposed in said elongated bar extension and extending through to said guide means, said safety release pin disposed for upward movement in said guide slot as said elongated bar extension is forced upwardly during a derailment, said locking aperture capturing said safety release pin at its uppermost position, thus locking the elongated extension into an upper trip valve mechanism release position for unsealing said trip valve mechanism.