Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by material processed]
7. textile working equipment
8. [textile fabricating tools and equipment]
9. textile machines

Anotations

Scope note:

Mechanized warp knitting devices, typically comprising a series of guide and drafting rollers, synthetic rubber aprons, a pressure arm, a roving bobbin, and a sliver can, designed to minimize sliver weight and width to a suitable size for subsequent yarn spinning and manufacture processes. Slivers are first fed to the device in large cans and subsequently exposed to weight and tension through a series of rollers before being passed through flyers which create a twist in the fiber strands; slivers are thus converted to thin roving, which is then fed into a ring frame for futher processing. Used as an intermediate step between the draw and ring frames, these devices strengthen the roving and prevent breakage during future processing.