Roving machine for producing a roving
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United States of America Patent
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Dec 17, 2013
Grant Date -
Nov 15, 2012
app pub date -
Apr 13, 2012
filing date -
Apr 13, 2011
priority date (Note) -
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Abstract
A roving machine for producing a roving from a sliver has at least one spinning station that has a vortex chamber with an infeed opening for the sliver and a roving forming element in the form of a spindle extending at least partially into the vortex chamber. The vortex chamber is associated with at least one air nozzle via which air is guided into the vortex chamber, and wherein the spindle has a draw-off channel via which the roving is drawn out of the vortex chamber. In the region of the vortex chamber, the draw-off channel has an inlet port for the roving to be drawn out of the vortex chamber, wherein the inlet port has an inner diameter that lies between 4 mm and 12 mm, preferably between 6 mm and 8 mm.
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