PURPOSE: To obtain discharging performance without malfunction in measuring by providing a microswitch which can be in contact shutter, an interlocking link and a special opening solenoid on the shutter of an automatic measuring device for dropping grain in a reservoir tank to a measuring hopper positioned below.
CONSTITUTION: A lower discharge port of an upper gate hopper 2 connected to a lower part of a reservoir tank 1 is equipped with a shutter 5 for opening with an opening solenoid turned ON, while a discharge port 8 having an open/ close shutter 7 is connected to a lower part of a measuring hopper 6 positioned at a lower part. A microswitch 9 which is operated to turn OFF/ON respectively with the open/close shutter 7 opened/closed is provided in the vicinity and electrically connected in series with the opening solenoid 4. When the open/close shutter 7 is opened, the microswitch 9 is turned OFF to automatically turn OFF also the opening solenoid 4, so that even if a button switch 10 is erroneously pressed, the opening solenoid 4 may not be turned ON, thereby effectively discharging grain with good measuring accuracy.
HASUMI ETSUO
ABE TOSHIYUKI
