Head conversion unit

Claim 1

Apparatus of the type described comprising: a. a tank including upwardly extending side walls and a bottom wall extending between and interconnecting said side walls, b. a portion of said bottom wall being downwardly depressed and defining a sump therein, c. means projecting downwardly from the exterior surface of said bottom wall and having lower surfaces coplanar with the lower surface of said downwardly depressed portion, d. portions of said side walls being inwardly depressed and defining vertically extending bolt receiving slots, e. said side walls terminating at their upper ends in a continuous outwardly projecting bead, f. a top wall having a pair of continuous flanges extending downwardly therefrom about the periphery thereof and defining a cavity receiving said upper ends of said side walls, g. a series of spaced ledges mounted on the outer one of said flanges and projecting inwardly of said cavity in engagement with said bead, h. portions of said top wall positioned outwardly of said outer one of said flanges in alignment with said bolt receiving slots having means defining openings therein, i. pairs of spaced apart inwardly projecting ribs mounted on said bottom wall, said top wall and an opposing pair of said side walls and defining a series of coplanar slots, j. a filter plate received in said slots and extending between said bottom wall and top wall and said opposing pair of side walls and dividing said tank into a receiving chamber and a recirculation chamber, k. means defining a plurality of openings through said filter platE with said openings tapering outwardly toward said recirculation chamber, l. means defining an opening through said top wall into said recirculation chamber, m. means defining a pair of openings through said top wall into said receiving chamber with one of said openings positioned above said sump, and n. means mounted in said top wall for directing jets of rinsing liquid against said filter plate on the receiving chamber side thereof.