MACHINE FOR CORRECTION OF GRAIN SHAPE OF CRUSHED STONE Russian patent published in 2001 - IPC

FIELD: production of nonmetalliferous building materials. SUBSTANCE: machine includes roll kinematically connected with drive, spring-loaded device for roll positioning; working chamber with loading and unloading troughs installed at an angle to each other for embracing of roll in a spaced relation to it and joined by changeable rigid plate from wear-resistant material. Upper trough has a wavy transverse profile and cover. Lower unloading trough is installed relative to horizon at an angle larger than crushed stone angle of friction over said trough. Roll shaft is located for displacement of its sliders in guides oriented parallel to bisector of an angle between troughs. Plate may be spring-loaded to frame and kinematically connected with vibration source. EFFECT: increased efficiency of operation of grain correction with slab or prickly shape. 2 cl, 6 dwg