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Pneumatically operated closure for drop-bottom hopper car
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Pneumatically actuated hopper closure latching and operating device
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Operating mechanism for doors on hopper type cars
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Tubular center sill for covered hopper and like cars
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Loading hatch for freight cars
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Locking means for car roof hatch covers
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Jacking equipment for highway trailer transportation on railroad flat cars
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Pneumatic control means for offset pivoted hopper car doors
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Door operating motor means for gable bottom cars
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Railway car dump valve
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Dump car door control means
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Hopper outlet valve structure
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Car roof hatch
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Valve control means in railway car dumping systems
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Car roof hatch cover operating mechanism
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Automatic valve for controlling the flow of air to pneumatic operating mechanism in railway dump cars
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Dump car door control means
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Directional valve
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Control mechanism for pneumatically operated railway dump cars
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Pneumatic operating means for railway dump cars
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