DEVICE FOR FISHING AND MARINE INVERTEBRATES Russian patent published in 2010 - IPC A01K73/00 

FIELD: agriculture, fishing.

SUBSTANCE: device comprises net wall arranged with the possibility to perceive high rupture loads and with the possibility to give it round shape under dynamic loads, for this purpose its shape is arranged as polygonal and symmetrical relative to vertical axis. Larger base of net wall is equipped with upper guard rope with overlaps, and smaller base is equipped with lower guard rope. At the ends of lower guard rope there are concentrated weights fixed detachably, to which loading ropes are attached. Lower guard ropes are fixed with ends of side guard ropes. Side guard ropes are equipped with bridles having clamp rings, through which side clamp ropes are pulled. At least one supporting rope is fixed to upper guard rope. Internal side of net wall is equipped with detachable flat elastic hydrodynamic elements. Length of net wall along upper guard rope is more than width of vessel hull. Device additionally comprises two booms, every of which is installed with the possibility of rotation around vertical stand and variation of angle of inclination of its longitudinal axis to longitudinal axis of vertical stand. Vertical stands are distanced from each other by width of vessel, are equidistant from its stern and are maximally drawn near it. Each boom is equipped with mechanism of fixed rotation in vertical plane and mechanism of rotation around longitudinal axis of stand. Blocks are arranged near free ends of booms, through which ends of side clamp ropes are brought and installed on reels of reversible hoists. Side clamp ropes are pulled through clamp ropes, which are fixed on bridles of side guard ropes and are attached to extreme of it, preferably the one located near lower guard rope. At least one bridle is fixed to lower guard rope, being fixed to pulling rope passed through slip and brought to reversible hoist reel. Loading ropes are brought through blocks, which are preferably located at transom portal, above transom, between board and slip. Some ends of loading ropes are fixed to concentrated weights, and the second ones are installed on reels of reversible hoists. Supporting rope is brought into block arranged above slip, preferably on longitudinal axis of vessel hull. One end of supporting rope is equipped with at least one bridle, ends of which are connected to upper guard rope, and the second one is installed on reel of reversible hoist. Device includes system of all mentioned hoists control, which is arranged with the possibility for hoists to operate as coordinated or non-coordinated. Concentrated weights are connected to lower guard rope by means of quick-detachable joints. Mass of weights exceeds floatability of fishing device.

EFFECT: improved level of mechanisation and automation of works for installation and selection of tacking and its efficiency in use as feed trap, and also improved efficiency of fishing due to reduced possibility of takeoff.

9 cl, 9 dwg