The Holdup, first state
1921 · lithograph
Platemark: 28 x 21.6 cm (11 x 8 1/2 in.); Sheet: 32.8 x 26.5 cm (12 15/16 x 10 7/16 in.)
Cleveland Museum of Art

Bellows are a device constructed to expel a controlled blast of air. The simplest type consists of a flexible bag comprising a pair of rigid boards with handles joined by flexible leather sides enclosing an approximately airtight cavity which can be expanded and contracted by operating the handles, and fitted with a valve allowing air to fill the cavity when expanded, and with a tube through which the air is forced out in a stream when the cavity is compressed. It has many applications, in particular blowing on a fire to supply it with air.
Source: Artsy · Trust score: 85% · Updated 1mo ago