Staple draft devices

Details Staple draft devices Staple draft devices

1974-03-11

1976-03-09

Newton, Dorsey

Textiles: fiber preparation

Working

Drafting

19295, D01H 524

Patent

active

039422232

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.

REFERENCES:
patent: 460083 (1891-09-01), Dunham et al.
patent: 2219666 (1940-10-01), Solanas
patent: 2644988 (1953-07-01), Haythornthwaite et al.
patent: 3417436 (1968-12-01), Masurel

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