Vibratory finishing machine

Claim 1

A vibrator machine for surface treating a work piece and, upon the completion of treatment, sorting the ingredients of the mixture comprising the treated work pieces and the treatIng agents, said machine comprising: a. an annular tank having a base which lies in a single horizontal flat plane, said tank having substantially vertical outer walls and substantially vertical inner walls forming an annular passageway; b. a frame on which said base is mounted in spaced relationship; c. means forming a passageway which extends substantially half way around said annular tank and to a level below the level of the base of said annular tank; d. a vibration generator disposed with respect to said annular tank operative to move a mixture in said annular passageway in a motion comprising a continuous universal displacement along the tank and a rolling motion transverse to the displacement and to reverse the direction of displacement of said mixture; e. a first opening in the outer wall of said annular tank on one side of said annular passageway extending upwardly from said base and communicating with said passageway of (c); f. a second opening in an opposing outer wall of said tank extending upwardly from a point substantially above said base and communicating with said passageway of (c); and g. a screen extending tangentially in a plane substantially coplanar with the plane of said base beneath said first opening in said passageway of (c) and projecting outwardly beyond said passageway of (c).