VARIABLE WIDTH PLOW Russian patent published in 1998 - IPC

FIELD: agriculture, in particular, basic cultivation of soil. SUBSTANCE: plow has rotary beam and plow bodies mounted on rotary beam by means of vertical pins, front bar pivotally connected with rotary beam and provided with cross-piece movable along it. Cross-piece has members for connecting to pivot joints of lower tie-rods of tractor hitch. Plow is further provided with brace of adjustable length connected with pivot joint on cross-piece and through pivot-joint with rotary beam. This pivot joint is disposed in the vicinity of pivot joint of lower tie-rods of tractor hitch. Such construction allows front bar and cross-piece to be relieved, since major part of loading created by plow bodies is transmitted through brace to pivot joint and absorbed by pivot joint of lower tie-rod of tractor hitch. EFFECT: increased strength and reduced weight of plow. 2 cl, 2 dwg