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US3405655A
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Railway hopper car door operating mechanism lock
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US3405656A
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Oppositely swinging railway hopper valves
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US3373884A
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Selective pneumatic and gravity unloading hopper car
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US3385231A
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Sequentially actuated mating hopper doors
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US3314558A
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System for automatically operating discharge doors of railway cars
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US3339500A
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Overcenter toggle latch overlapping hopper doors
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US3241730A
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Operating means for sliding gate
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US3385232A
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Resilient hopper door sealing means
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US3344748A
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Hopper car discharge outlet assembly
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US2782879A
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Operating mechanism for automatic slack adjuster
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US2828837A
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Automatic slack adjuster
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US2670974A
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Take-up device for slack adjusters
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US2699231A
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Brake slack adjuster
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US2751049A
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Automatic slack adjuster
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US2694472A
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Automatic slack adjuster mechanism
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US2698206A
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Articulated lid
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US2698207A
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Lid for journal boxes
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US2694317A
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Slack adjuster operating lever
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US2694471A
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Brake slack adjuster
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US2646141A
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Spring mechanism for slack adjusters
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