COAL PLOW Russian patent published in 1994 - IPC

FIELD: coal plows. SUBSTANCE: coal plow has frame and two turrets. Each turret includes spacers with cutter holders, movable cutter group, device for moving movable cutter group with adjustable stop and spacers having no cutters which are located between upper spacer with cutter holders and lower spacer with cutter holders and connected with the latter. Movable cutter group is made in form of two cutting heads. Frame has two projections whose longitudinal axes are located on arc of circle. Body of each cutting head has curved recess to receive corresponding projection on frame. Device for moving movable cutter group is made in form of cutters whose longitudinal axis is arranged at angle not less than 20 and not more than 35 deg. to longitudinal axis of plow. Adjustable stop is made in form of projection, two recesses and stop member. EFFECT: higher efficiency. 2 dwg