| 摘要 |
An improved picket fence is disclosed, comprising a plurality of vertical pickets, each extending through an aperture in an upper rail and a corresponding aperture in a lower rail, the rails being provided with a frictional abutment, into which the pickets are rotated, enabling frictional abutment of the rails with the pickets in such a way as to resist further movement of the pickets relative to the rails.
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