Factory Tour Pt 2 – Screw What? | Bullseye Glass Co. | Bullseye Glass Co Factory Tour Pt 2 – Screw What? | Bullseye Glass Co. | Bullseye Glass Co

Factory Tour Pt 2 – Screw What?

Now imagine you’ve dashed past the mixing barrels and are darting across the hot shop floor, dodging guys running by with ladles of molten glass. Then you come face-to-face with this guy…

…operating something that looks like a cross between a howitzer and a speculum.

It’s called a screw charger. It’s used to feed the batch into the furnace. It takes about 90 seconds to charge the contents of a single barrel (350 lbs) into a furnace. We used to shovel the batch in by hand. The screw charger reduces dust and back aches.

Each furnace will get charged 6-10 times during its 16-hour melt cycle. You won’t get to watch. We have to keep moving. Remember, there are 349 other people behind you on this tour.

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