| 摘要 |
A grate rake for cleaning a grate in upward into an emptying position water conduit, which grate extends transversely of the conduit and whose bars extend substantially vertically, the rake comprising a handle horizontally pivoted on a crank arm which is horizontally pivoted on a fixed member, a rake comb pivoted to said handle on a horizontal axis, and fluid pressure operated means for moving said comb from a position of rest above the water surface level into an initial working position at the lower end of said grate and from this position along a working travel with its teeth engaging through between the grate bars and collecting the accumulated oversize material on the grate, upward into and emptying position and back again. the grate, upward into an emptying position an d back again.
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