Textiles: fiber preparation – Assembling – Web forming
Patent
1991-06-19
1993-08-10
Crowder, Clifford D.
Textiles: fiber preparation
Assembling
Web forming
19 024, 73159, D01G 2306, G01L 504
Patent
active
052337278
ABSTRACT:
In a textile fiber preparation machine, thickness and/or unevenness characteristics of a lap (W) formed by a web or wadding of textile fibers being fed in the machine are determined for individual longitudinal strips spaced across the width of the lap. A plurality of individual sensors (2) are arranged next to one another over the width of the lap (W) and press the lap (W) against a stationary guide (4,5, 6--6'). Each of the sensors (2) is movable toward and away from the guide and is resiliently biased toward the guide. The amount of movement of an individual sensor (2) away from the guide by the lap is a measure of the thickness of the lap portion being contacted by that sensor. The use of individual sensors arranged end to end across the width of the lap improves sensitivity so that even brief changes in thickness when the lap has a high transport speed can be measured reliably. Furthermore, the apparatus can be adapted quickly and simply to changing lap widths.
REFERENCES:
patent: 4414710 (1983-11-01), Bolen
patent: 4506413 (1985-03-01), Leifeld
patent: 4520531 (1985-06-01), Hergeth
patent: 4817247 (1989-04-01), Leifeld et al.
patent: 4939815 (1990-07-01), Leifeld
Crowder Clifford D.
Neas Michael A.
Zellweger Uster AG
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