Vacuum hopper

The vacuum hopper is a piece of machinery in the Fallout 4 add-on Contraptions Workshop. It is a device for pulling items from standard storage containers to be used in factory production.

Characteristics
This device can be used by placing the "vacuum" end adjacent to a standard container like a metal box or filing cabinet. Just connect the conveyor end to any conveyor, hopper, factory, sorter and items from the adjacent containers will be transferred down the line. The vacuum hopper can even pull items from your settlement's workshop (but not other crafting stations).

The vacuum hopper pulls one item at a time and will pull all objects stored in the container, regardless of whether or not subsequent manufacturing machinery can process it.

Using an attached terminal, you can adjust the rate at which it pulls objects, and the velocity with which it outputs them.