• It refers to a type of loom that has shafts to raise and lower the warp ends, to form a shed for the passage of the shuttle. Those shafts may be suspended from above in counterbalance.

• Loom

• CIETA. Vocabulary of technical terms of fabrics (English, French, Italian, Spanish). Lyon: Centre  International d’Etude des Textiles Anciens, 1964; Burnham, Dorothy. Warp and Weft. A Textile Terminology. Royal Ontario Museum, 1980.

http://data.silknow.org/vocabulary/525