| 摘要 |
A safety shield attachment for protecting machine operators from debris or cave-ins from above has a canopy which is pivotally supported at one end, but normally retained in a fixed position over an operator's station, and a platform pivotally supported at one end, the other end of which can be suspended from the canopy at a fixed level therebelow or allowed to rest upon the ground in a "free-floating" condition.
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