<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">simplex machines</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31422155</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:53:46</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">roving frame</dcterms:alternative> <dcterms:alternative xml:lang="en">simplex frame</dcterms:alternative> <dcterms:alternative xml:lang="en">simplex machine</dcterms:alternative> <dcterms:alternative xml:lang="en">speed frame</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ 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.  ]]></dc:description></metadata>