| 摘要 |
The invention relates to a device for guarding the blade of an orientable circular saw or like tool, already provided with an upper guard constituted by a sheath element enveloping the upper part of the blade, said device further comprising a piece of rigid transparent material laterally and frontally enveloping, at least transversely with respect to the plane of the saw blade, that portion thereof directed towards the sawyer, and comprising side and front walls inclined from the outside towards said tool and from bottom to top, means being provided for fixing said piece of transparent material on said upper guard.
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