Method and apparatus for drafting and condensing a roving, particularly an a ring spinning frame
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 25, 2001
Grant Date -
N/A
app pub date -
Nov 21, 2000
filing date -
Nov 26, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for drafting and condensing of a roving before its transformation into yarn comprises a drafting unit which confers a predetermined draft on the roving and a condensing unit by the effect of suction on the fibres of the roving through a movable filtering surface reduces its dimensions increasing the cohesion and strength even before it receives the twist from the spinning machine.
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