Unit drafting mechanism having air jet apertured slide metals and rollers
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United States of America Patent
Stats
-
Feb 18, 1992
Grant Date -
N/A
app pub date -
Oct 3, 1990
filing date -
Oct 3, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A unit drafting mechanism of a spinning machine, having at least one unit drafting mechanism and provided with a pair of slide metals disposed on roller stands facing each other, and a plurality of bottom rollers and top rollers journaled on these slide metals in a rotatable condition, wherein each bottom roller is provided with an axial air passage formed coaxially with its center axis, air jet apertures are radially formed at both end portions near the bearing bores of the slide metals, each aperture is connected to the axial air passage, and the axial air passage is connected to a source of compressed air, whereby the possible deposition of flies in the circumference around the journal portions of the draft rollers can be effectively eliminated by continuously or intermittently supplying compressed air through the axial air passage of the bottom rollers.
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