Segregator bucket

A segregator bucket comprising an open-fronted shell including a pair of opposed sidewalls and a rear wall, the rear wall including a plurality of curved, transversely spaced primary ribs defining spaces therebetween, and a cage member mounted in the shell between the opposed sidewalls thereof and comprising a plurality of curved, transversely spaced secondary ribs defining spaces therebetween, the cage member being rotatable relative to the shell about an axis extending transversely of the shell between a loading position in which the secondary ribs are received within the spaces between the primary ribs substantially to fill said spaces whereby the bucket can be loaded with material to be segregated, and a screening position in which the secondary ribs are displaced from the spaces between the primary ribs to open said spaces whereby screened material can pass through said spaces, the shell and the cage arranged such that, subsequent to loading of the bucket with material to be segregated, and on movement of the cage member between the loading and screening positions, the cage member can agitate the material to be screened within the shell and the secondary ribs, on the passage of the secondary ribs between the primary ribs, can displace material from the spaces between the primary ribs.