Bellows

Bellows are used to stoke fires and consist of a nozzle attached to a pair of hinged boards fitted to either side of a large bladder. When pulled apart, the bladder fills with air, and when pushed together, the bladder empties through the nozzle, sending a rush of air to stoke the flames.

Source
[[Category:B]]
 * Warhammer Fantasy RPG 2nd ED -- Old World Armoury
 * pg. 66