TRAWL TOGGLE Russian patent published in 2011 - IPC A01K73/45 

FIELD: transport.

SUBSTANCE: proposed device comprises set of bent plates, lengthwise stringers oriented in parallel to make toggle rigid, upper and lower washers confining said plates, ballast, trawl gallow, and trawl cable ropes fastening rakes. Trawl gallow is arranged on toggle horizontal axis and secured in central stringers. Trawl gallow, central stringers and rakes allow adjusting trawl toggle to angle of attack, heel and pitch. Plates are oriented and fastened so that their front edges, in cross section, are located along arc. Every plate is bent in direction of trawl toggle travel. Plate rear edge is arranged with clearance to next plate.

EFFECT: increased separating force and quality of trawl toggle.

3 dwg