Back to results
US 6,158,091 AGranted
Drafting frame for a spinning machine having a roving compactor
AssigneeZinser Textilmaschinen GmbH
InventorsAndreas Olbrich, Stefan Krawietz, Jurgen Schneider, Jorg Steger, Hermann Guttler
Life of this patent
Estimating the term…
Abstract
A drafting frame is provided with at least one compaction unit in which a belt with a perforation under suction serves to draw together the fibers of a drafted roving. The belt is juxtaposed with a stripper spaced from the belt to remove fiber accommodations thereon. The gap between the stripper edge and the belt is adjustable.
Claims6
A drafting frame for a spinning machine, comprising:
- a succession of pairs of juxtaposed members having surfaces moving codirectionally and at speeds such as to draft a roving between the surfaces of the juxtaposed members, at least one of said surfaces being formed by an endless belt provided with perforation means for communicating between a suction chamber bounded by said belt and said roving and subjecting fibers of said roving to suction for compacting said roving, said belt having a convex portion in a path of the belt around said chamber;
- a stripper having a stripping edge extending a full width of said belt and juxtaposed with said belt but spaced therefrom at said convex portion of said belt across a gap, for stripping fibers accumulating on said belt from said belt whereby said stripping edge is formed with a recess in a region of said perforation means or extends in spaced relation to said belt over the entire width thereof;
- and
- a suction device having a mouth proximal to said stripper for evacuating away fibers stripped from said belt.
1 more element
Dependencies are inferred from the claim text.