foerfarande foer dragning av so under phase and notanordning.

摘要

In the method according to the invention, the net and the lines are secured to two pontoon-like net guides 4 which each have essentially parallel guide edges bearing against the underside of the ice. The free ends of the lines 5 are drawn under the ice from the sink hole 2 to lift hole 3, and the net guides are drawn by means of the lines along the underside of the ice from sink hole to lift hole. The arrangement according to the invention thus includes, in addition to the pontoon-like net guides 4, at least one pulling arrangement 6 for drawing the net guides from the hole 2 to the hole 3. To keep the arrangement as simple as possible and to eliminate the net holes which are needed in conventional net drawing, the pulling of each net guide 4 is commenced in such a way that the angle & alpha of pulling between the direction determined by the guide edges 11a-11c, 16a-16c and the corresponding direction of the line 5 is oblique. IMAGE