Patent ID: 6889845
Filing Date: 2005-05-10
Classification: B03B

Abstract:
1. Jigger comprising: a movable upper trough having a sieve inside, a movable lower trough, a driving gear, and devices for loading minerals, for water delivery and for unloading processed products, characterized in that the upper trough is equipped with an underlying continuous flexible membrane interacting with the lower trough, and in that the upper and lower troughs are hinged by double-arm levers, the latter being in turn hinged on supports, wherein the upper trough, the lower trough, and the double-arm levers in combination form a system of hinged parallelograms, said driving gear capable of pivotally actuating the double-arm levers relative to the supports to move each one of the upper and lower troughs in a reciprocating motion by which the upper and lower troughs are moved relative to one another.