| 摘要 |
Two limit switches, one for sensing the presence of a container at a first filling station of a filling machine and one for sensing when the container has been advanced a predetermined distance through the filling machine, provide the only sensing means for controlling the filling of each container with equal amounts of fluid at four filling stations. The switches are connected to a shift register circuit which is actuated by the actuation of the switches to generate an output signal (or signals) on different leads to cause filling of the container at the first filling station and at subsequent stations each time the container is advanced a predetermined distance. A timer controls the filling at each station.
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