Abstract: A static metering pump includes a pair of tanks, electrically operated inlet and outlet valves, liquid level sensors and controls which permit the alternate filling of a first of the tanks while permitting the discharging of liquid from a second of the tanks and then permitting the discharging of liquid from the first tank while filling the second tank. The cycle of filling and discharging of the tanks is repeated until a preselected volume of liquid is dispensed with precise metering. The two tanks are adapted to dispense the same volume of liquid in normal operation. Where the total volume of dispensed liquid called for includes a fraction of the normal volume of the tanks, one of the tanks is provided with a fractional liquid level sensor which may be preset to fill this tank initially to the fractional volume and to commence the metering operation by the discharge of this tank.

Abstract: A rim shield is disclosed for use in conjunction with a porous mold in molding ceramic articles using a slip casting process. Use of the rim shield prevents the deposit of excess clay to the lip or rim of a molded article.

Abstract: A solids-level indicator for small dissolving tanks including a transparent pipe secured on the top of the tank and a gauge member slideable in the transparent pipe and having a pad resting on the upper surface of the solid material. The transparent pipe serves as the liquid inlet and the gauging member serves to guide the liquid along itself for distribution adjacent the pad.