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Improvements in Devices for Supporting Colliery Cages in Case of Accidents.
Improvements in Devices for Supporting Colliery Cages in Case of Accidents.
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机译:发生事故时用于支撑煤矿笼的设备的改进。
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摘要
3945. Youdan, W., and Tinsley, J. Feb. 17. Cleats or holders.-In safety suspending apparatusfor colliery cages,levers E are pivoted in brackets B, and at their outer ends carry eyes embracing the guide-ropes or rods.
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