| 摘要 |
<p>Winches for hauling on board fishing vessels purse nets or similar fishing devices. The nets are pulled by frictional engagement with at least two rollers rotatable in mutually opposite directions and arranged in spaced apart relationship to project freely outwards from a common pivotable end member for adjusting the rollers in various oblique positions relative to a vertical plane. The rollers each have inner and outer rest portions with friction-promoting means, such as rubber coating, the inner rest portion having a smaller diameter than the outer rest portion thereby enabling a float-supporting side of the net to bear against the roller between the inner and outer rest portions in a manner regulated by the oblique positioning of the rollers. Furthermore, each roller has an annular portion formed without friction-promoting means to constitute a net-slide portion. By arranging the net-slide portion between the two rest portions, the float-supporting side of the net can be readily controlled by relatively slow pivoting of the rollers in the one or the other direction from the outer rest portion to the slide portion and from the inner rest portion to the slide portion.</p> |
