Textiles: fiber preparation – Working – Picking
Patent
1990-02-14
1992-06-16
Shaver, Kevin P.
Textiles: fiber preparation
Working
Picking
19300, 222 1, 222 63, 222 64, D01B 100
Patent
active
051215233
ABSTRACT:
A metering method or a metering apparatus for dispensing predeterminable quantities of fiber flocks per unit time by two feed rollers (18, 20; 18.1, 18.2, 170, 172) which are arranged at the lower end of a flock shaft (14, 14.1, 14.2), which are rotatable in opposite directions and which form a conveying gap between them, with an opening roll (22; 22.1, 180) preferably being arranged beneath the feed rollers, is characterized in that at least one of the feed rollers is biased in the direction of the other feed roller (18; 20.1; 170) and is movable away from the latter under the pressure of the flocks; in that the spacing (x) between the two feed rollers, or a value proportional to this distance is measured; and in that the speed of rotation of at least one of the feed rollers is so regulated that the product (n.multidot.x) of the speed and of the spacing remains constant, at least on average.
REFERENCES:
patent: 3448905 (1969-06-01), Heilbrunn
patent: 3889319 (1975-06-01), Roberson
patent: 4476611 (1984-10-01), Keller et al.
patent: 4574433 (1986-03-01), Brunnschweiler
patent: 4682388 (1987-07-01), Pinto
patent: 4709451 (1987-12-01), Leifeld
patent: 4939816 (1990-07-01), Schenkel et al.
Article in Textil Praxis International 1983, "Kontinuierlich arbeitende Spinnereivorbereitungsanlage mit Mikroprozessorsteuerungs- und Regelsystem".
Brutsch Peter
Demuth Robert
Faas Jurg
Staheli Paul
Derakshani Philippe
Machinenfabrik Rieter AG
Shaver Kevin P.
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