| 摘要 |
In order to make possible automatic restart of a spinning machine drafting frame after strand breakage in an easy way, a movable blocking member is insertable between the drive roller of the lower feed belt and the lower feed belt in the direction of the line of contact of the lower feed belt and the drive roller, this blocking member on engagement raising the lower belt from its drive roller by operation of a connecting rod attached pivotally to the detent member. Additional roller pairs present upstream of the feed belts are preferably provided with means for simultaneously lifting the various upper rollers from the lower rollers with or without holding the yarn or thread fixed on engagement of the detent member.
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