FIELD: preparation of mixtures. SUBSTANCE: device has a mechanism for making oscillate its flexible bottom. The mechanism is provided with two supporting axles and driven eccentric rollers. The drive for the rollers is made like a planetary gear rack with carrier on which a roller and satellite are freely fixed. The satellite is in mesh with an epicyclic wheel provided with a brake. The wheel is engaged with the carrier by a clutch. EFFECT: higher efficiency; better quality of mixture prepared. 3 dwg
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