MACHINE FOR SEPARATING COFFEE BEANS AND BERRIES FROM TRASH MATERIAL

A mixture of coffee beans and berries with twigs, leaves, snails and other trash material is obtained when coffee is harvested by spreading nets beneath the bushes. The trash in this mixture is separated from the coffee beans and berries by pouring the entire mixture vertically downwardly into the machine provided by the invention. The mixture falls into a forced updraft of air which is sufficiently strong that the coffee beans and berries and the heavier components of the mixture fall through it by gravity but leaves and other lighter components will not fall through it and are removed by the updraft. The components that fall through the updraft impinge on the inclined vibrating surface which is located in a stream of air, and the coffee beans and berries are separated from the high-density components of the mixture at this point.