Other

Sergio Vivi

Herbert Rueff

Apparatus for controlling and adjusting the weight of doses of a loose product in a rotating metering head having telescoping volumetric members distributed therearound. The apparatus includes a rotating control head having a set of sample telescoping volumetric members. A main duct feeds the product to the metering head. A secondary duct is branched off the main duct to feed the control head. A scale is operative to receive individual sample doses as provided by the telescoping members of the control head and to discharge them, after the weighing thereof has been completed, to the metering head. A control assembly adjusts in a concurrent proportional mode the volume of the telescoping members of the metering and control heads according to the weight variations of the weighed product versus the scale reference value. Associated with the scale is an electromechanical transducer having, upon each weighing step of the sample doses, an output signal the level and direction whereof vary in a directly proportional manner with the weight deviation of the sample dose from the scale reference weight. An electronic computer is connected between the transducer and the control assembly and is operative to convert the signals from the transducer into pulses activating the assembly such as to adjust the volumes of the telescoping members of the metering head and control head and eliminate the deviation in the doses supplied thereby.

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Bologna, Italy

Sergio Vivi