HAND RIPPER Russian patent published in 1996 - IPC

FIELD: agriculture; hand tools. SUBSTANCE: hand ripper has attachment ring, handle, working blade with cutting edge and longitudinal knives. Side portions of working blade are bent off, and cutting edge is arranged square to longitudinal axis blade. Longitudinal knives are located symmetrically relative to longitudinal axis of blade, every other knife being bent off to different sides of blade between hole and cutting edge. Blade has also attachment hole. Attachment ring is formed by inward flanged portion of blade coaxially with attachment hole. Cutting edges of longitudinal knives are saw-like, with pointed tip and surface sharpening of teeth. Rake in form of longitudinal sharpened knives are located at side opposite to cutting edge. EFFECT: increased capacity at soil ripping. 3 cl, 3 dwg