| 摘要 |
Apparatus for moving workpieces from a relatively close spacing to a relatively distant spacing includes a block supporting a gear shaft for rotation, the gear shaft defining at least one pinion gear and at least two elongated rack elements which engage the pinion gear at diametrically opposed locations, so that rotation of the gear shaft causes the racks to slide in opposite directions. The racks are connected to gripping devices which can grip the workpieces for movement therewith.
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