Weigh feeder system

Details Weigh feeder system Weigh feeder system

1976-04-19

1977-10-18

Wise, Edward J.

Boots, shoes, and leggings

177105, 222 58, 222 55, 364581, G01G 1104

Patent

active

040547841

ABSTRACT:
Disclosed herein is an automatically controlled weigh feeding apparatus including a container prefilled with a substance, a device for discharging the substance from the container at a controllable rate, apparatus for weighing the container and its contents and for producing an electrical signal proportional to that weight, a first amplifier for amplifying the electrical signal, a first analog-digital converter coupled to said first amplifier and a digital computer coupled to said first analog-digital converter for computing the weight of substance remaining in the container. A second amplifier is coupled to said first amplifier and a ramp off-set circuit which is controlled by the digital computer inputs a second signal to the second amplifier means having a controlled stepping output applied as a second input signal to the second amplifier to maintain the output of the second amplifier within a given selected range of amplitude during one time cycle of operation. A second analog-digital converter interposed between the second amplifier and the digital computer. The digital computer is adapted to compute a corrective signal based on the signal received for controlling the discharge of the substance from the container.

REFERENCES:
patent: 3329313 (1967-07-01), Mayer
patent: 3724720 (1973-04-01), Bullivant
patent: 3855458 (1974-12-01), Motter et al.
patent: 3889848 (1975-06-01), Ricciardi et al.

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