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US 4,310,413 AGranted
Circular jig
OwnerNorman Cleavelandinventor
Life of this patent
Estimating the term…
Abstract
Circular jig for gravity separation of minerals, e.g. gold and tin ore, comprising a screen, a grid forming cells over the screen, a central jig box of polygonal, e.g. square shape, pulsating means to cause the jig bed to pulsate and aprons attached to the side walls of the jig box extending outwardly from the jig box to distribute overflow from the jig box to portions of the jig bed remote from the jig box.
Claims7
Apparatus for gravity separation of minerals comprising:
- (a) a circular jig basket having an outer wall, a screen extending from the center of the basket to the outer wall and a grid structure superimposed on the screen into which heavy minerals may sink and pass through the screen, such grid structure and screen providing a jig bed,
- (b) a jig feed box located centrally on the screen, the walls of such feed box having side openings above the screen through which pulp may flow onto the jig bed,
- (c) aprons attached to the upper part of the jig feed box, extending radially outwardly therefrom and widening outwardly therefrom whereby the several aprons form a continuous flow surface over the part of the jig bed neighboring the feed box to direct the overflow from the feed box outwardly above the jig bed and then onto portions of the jig bed more remote from the feed box, and
- (d) means for imparting pulsating movement to the jig bed to agitate pulp delivered thereto.
1 more element
Dependencies are inferred from the claim text.