| 摘要 |
A device for selectively inverting a workpiece about the longitudinal axis of the workpiece within a single lug space of a lugged transfer without impeding lumber flow along a flow path on the lugged transfer, wherein the device includes a workpiece speed-up for urging the workpiece at an increased translation speed along the flow path, a selectively operable workpiece brake to inhibit accelerated translation of the workpiece by the workpiece speed-up so as to selectively at least momentarily delay translation of the workpiece at the increased translation speed of the workpiece speed-up, and a workpiece turning arm mounted downstream along the workpiece speed-up. The board turning arm is selectively actuable into the flow path so as to invert the workpiece about its longitudinal axis within a corresponding lug space of the lugged transfer once the workpiece has been translated by the speed-up to a downstream end of the corresponding lug space.
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