Method and apparatus for threshing ribs from tobacco leaves and the like

摘要

A method and apparatus for threshing ribs from tobacco leaves and the like. The method comprises a basket having a grid in which a threshing gear formed with a rotary drum including teeth on its periphery is accommodated in such a manner that the outside portion of the gear is disposed spacedly adjacent to it, supplying raw material to the space between the threshing gear and the basket from one side of the axial direction by an air flow at a predetermined speed corresponding to the peripheral speed of the gear, rotating the gear and basket at different peripheral speeds and discharging raw material toward the crossing direction of the axis. The apparatus comprises a casing, a threshing gear formed with a rotary drum having teeth, a basket having a grid and surrounding the gear, the gear and basket being rotated at different peripheral speeds, a material supply port, a feed duct and a discharge opening.