Staple draft devices
AssigneeSociete Alsacienne de Constructions Mecaniques de Mulhouse
InventorGauvain Roger
Life of this patent
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Abstract
This invention relates to a staple draft device comprising a pair of feed rollers and a pair of drawing-off rollers, said pairs determining therebetween the course of a staple lap to be drawn off, there being at one side of said course a feed roller with needle-like projections and a control roller also with such projections, and at the other side of said course a supplementary needled-surface roller which co-operates solely with said needled-surface feed roller, and a single levelling-down roller which is smooth, co-operates solely with said needled-surface control roller, and is preferably positively driven at an angular speed such that the peripheral speeds of said levelling-down and control rollers with needle-like projections are equal.
Claims3
A device for drawing textile fibers, comprising a pair of feed rollers and a pair of drawing rollers said pairs determining therebetween the course of a staple lap to be drafted;
- a toothed feed roller and a toothed control roller at one side of said course;
- a supplementary toothed roller and a single levelling-down roller at the other side of said course;
- said supplementary toothed roller being situated rearwardly of said toothed feed roller in relation to the direction of progress of a staple lap through said device, and being positioned to form a nip solely with said toothed feed roller;
- said single leveling-down roller being smooth surfaced and positioned a short distance upstream relative to said toothed control roller in relation to the direction of progress of a staple lap through said device while forming a nip solely with said toothed control roller.
Dependencies are inferred from the claim text.