FIELD: timber industry. SUBSTANCE: logging device has frame 1, saw-plate 8 and mechanism to provide planoparallel rotation of saw-plate made in form of two vertical shafts 5 with driving and driven cranks 4 distributed in height. Cranks 4 engage with upper and lower connecting rods 7. Saw-plate is installed on upper connecting rod. Device has also shaft drive and additional saw-plate which is installed on lower connecting rod 7 under main saw-plate, and driven cranks are installed on shafts 5 in bearings. EFFECT: enlarged operating capabilities. 3 cl, 3 dwg
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