Referring now more particularly to the details of construction of the tub assembly 2 which is rotatable about its vertical axis there is shown the substantially imperforate outer tub or receptacle 26 which includes the generally horizontal bottom wall 34 and the slightly upwardly and outwardly flaring cylindrical side wall 32 having the top edge 30 disposed above the normal liquid level desired therein <a href="http://www.sellercrusher.com/solutions/grinding-quartz-2500-mesh.html">grinding quartz 2500 mesh</a>. It is to be noted that the lower portion of the side wall 32 and outer portion of the bottom wall are curved gradually to provide a smooth surface in order to prevent heavy foreign particles from being held in the corner.
The inner tub 28 is. in the form of an openended basket or container having its side wall 8B adjacent the top edge 30 of the receptacle and the bottom wall 14 provided with pcrforations 88. The inner tub is disposed in substantially parallel spaced relation with the side wall 26 and the bottom wall 34 of the imperforate receptacle to proacca-rss vide an upper annular space 90 between the side wallsj32 and 86 and a lowerl radially extending thereof without contacting the fabrics. In addition,<a href="http://www.sellercrusher.com/solutions/alluvial-gold-mining-equipment.html">alluvial gold mining equipment</a> the openings 88 in the bottom of the basket permit heavy particles of dirt and foreign matter to flow therethrough and settle in the lower space 90 during the washing operation. Therefore, the space 92 defines a sediment zone or space which functions in a manner to be hereinafter described.
The basket 28 may beseoured to the receptacle 2B to forma unitary structure in any suitable manner, such as, for example, by screws or bolts 9|, and has its lower innermost portion disposed in spaced relation to the bottom edge of the agitator and to the bottom 34 of the receptacle to permit free flow of Washing liquid under the agitator around the edge l?l and into the sediment zone 92. The upper portion of the basket is preferably imperforate and extends upwardly and inwardly above the normal liquid level and terminates to define an opening 94 whereby the operator may have access to the interior of the basket.