Sorting out unit, for the king skittle used in automatic skittle replacement systems. An unbolting element actuated by the crown (2) of the king skittle (1) is fitted which frees a sliding off groove (9). When in the unbolting position which takes the crown of the king skittle. The swivel axis (13) of the unbolting element (4) extends across the swivel axis (15) of a stop element extending across the sliding off groove (9). The unbolting element is made as an angle-shaped part capable of swivelling round a horizontal turning axis (13).
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