MECHANISM FOR CLEANING FLAT SIEVES IN GRAIN-CLEANING MACHINES Russian patent published in 1996 - IPC

FIELD: agriculture. SUBSTANCE: mechanism for cleaning flat sieves in grain-cleaning machines has purifying fixture of sieves of sieve boots and its drive in the form of carriage with ratchet surfaces, with carriage being displaced along guideways and fixed on sieve boot, and clicks of two-sided action one of which is connected with sieve boot and the other with machine framework. The clicks are pressed to ratchet surface by common spring for simultaneous switching for reverse motion by means of spring sagging exercised by prop fixed on guideway before its branches go over dead points of clicks. EFFECT: enhanced efficiency of cleaning sieve boots. 4 dwg