Abstract: An upwardly opening tank including peripherally extending upstanding side walls interconnected at their lower marginal portions by a bottom wall extending and secured therebetween is provided. The tank may have a cleaning liquid disposed therein to a predetermined level and includes heater structure in a lower portion thereof below the aforementioned level. A foraminous horizontal baffle is supported within the tank closely below the heater and a multi-branched tubular air manifold is supported horizontally in the tank above the baffle and below the liquid level. The manifold includes upwardly opening air outlets therein and includes an inlet for connection with a supply of air under pressure.

Abstract: An upwardly opening tank including peripherally extending upstanding side walls interconnected at their lower marginal portions by a bottom wall extending and secured therebetween is provided. The tank may have a cleaning liquid disposed therein to a predetermined level and includes heater structure in a lower portion thereof below the aforementioned level. A foraminous horizontal baffle is supported within the tank closely below the heater and a multi-branched tubular air manifold is supported horizontally in the tank above the baffle and below the liquid level. The manifold includes upwardly opening air outlets therein and includes an inlet for connection with a supply of air under pressure. Further, an upwardly opening receptacle including a foraminated bottom wall is removably supported in the tank with the bottom wall of the receptacle spaced above the manifold.