Percussion jig

In a percussion jig having at least one settlement tub containing settling fluid and within which is a vertically reciprocable tank at least partially immersed in the settling fluid, means for reciprocating said tank, a first chute for delivering material to be separated into said tank, and a second chute communicating with said settling tank and movable therewith for discharging relatively light material from the settling tank, the improvement wherein the two chutes are each divided into a plurality of individual chute segments arranged adjacent to one another over the breadth of the settling tank, each of said segments being spaced apart by a clearance of such breadth as to provide equalisation of the levels of the settling fluid during vertical movements of said tank.