| 摘要 |
A throw-off device for use on a drum having a side wall and a head, a support body attachable to the side wall of the drum, a tensioning member movable relative to the body to tension or release strands adjacent the drum head, a lever movable between selected positions, cam and follower roller elements that are relatively movable in response to lever movement to effect member movement, and a detent device for releasably holding the member in selected positions, whereby the degree of strand tensioning may be varied and retained at selected positions.
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