Bellows
device · 1500 BC · Ancient world
A device for blowing air into a forge.
What it is made of
- Valve — has part. A valve in the bellows lets air in when they open and keeps it from escaping back.
- Leather bellows bag — has part. It changes volume when squeezed.
- Wooden bellows boards — has part. Rigid walls.
- Check valve — has part. An air intake valve.
- Bellows nozzle — has part. It directs air into the forge.
Principles and materials it uses
- Leather — is made of. Bellows are a leather bag.
- Wood — is made of. With wooden boards.
- Pressure — uses. Bellows push air by pressure.
Where it is used
- Bloomery — is part of. Bellows blew in air for a high temperature.
- Forge — is part of. Bellows fan the fire of the forge.
- Pipe organ — is part of. Bellows supply the air.
- Blast furnace — is part of. Air was blown in by bellows, later by blowers.
- Accordion — is part of. Bellows.
- Barrel organ — is part of. Bellows feed air into the pipes.
- Player piano — is part of. Pedal bellows create suction.