SOIL-WORKING TOOL Russian patent published in 1996 - IPC

FIELD: agricultural engineering. SUBSTANCE: working tool has a standard and a cone-shaped chisel. The chisel is a combination of two split parts. The front part is a cone-shaped wear-resistant point, and the back part is an elliptic truncated cone. The base of the front part is provided with a threaded shank. The external surface of the front part has multistart grooves running opposite of the thread of the shank. The back part has a threaded hole. EFFECT: longer service life; lower operating cost; stabilized draft resistance. 4 dwg