Saw-tooth wire for a set of rollers

Details Saw-tooth wire for a set of rollers Saw-tooth wire for a set of rollers

2005-04-05

2005-04-05

Welch, Gary L. (Department: 3765)

Textiles: fiber preparation

Working

Carding

Reexamination Certificate

active

06874203

ABSTRACT:
The present invention relates to a sawtooth wire for a cylinder lining, in particular for a doffer cylinder for a carding machine. In order to improve the take-over and delivery properties of the doffer cylinder to a subsequent stuffer cylinder, the sawtooth wire is implemented such that the back angle of the tooth angle of the individual teeth increases from the base to the tip of the respective tooth. Owing to this tooth design, it can be achieved that the tooth back is steep in the area of the tip of the tooth, whereby the delivery properties of the doffer cylinder to the subsequent stuffer cylinder will be improved, while the breast angle is large; this will facilitate the take-over of fibres from the main cylinder that rotates at a higher speed.

REFERENCES:
patent: 795946 (1905-08-01), Thielmann
patent: 2937413 (1960-05-01), Hollingsworth
patent: 4653152 (1987-03-01), Wada
patent: 4854012 (1989-08-01), Graf
patent: 4953264 (1990-09-01), Hollingsworth et al.
patent: 4964195 (1990-10-01), Hollingsworth
patent: 5581848 (1996-12-01), Egerer
patent: 6035493 (2000-03-01), Carlton
patent: 6408487 (2002-06-01), Atkinson
patent: 6523226 (2003-02-01), Graf
patent: 0 322 474 (1989-07-01), None
International Search Report.
International Preliminary Examination Report—English.
German Patent Office Action.

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