Importance

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Abstract

A fiber tuft feeder includes a chute; a first air-pervious surface forming part of the chute wall; and a first exhaust air chamber adjoining the first air-pervious surface externally of the interior. The first exhaust air chamber is in a pneumatic communication with the chute through the first air-pervious surface. A device-charges the chute with an air stream carrying fiber tufts. A first part of the air stream is separated from the fiber tufts by, and passing through, the first air-pervious surface into the first exhaust air chamber whereby a fiber tuft column is formed in the chute in the region of the first air-pervious surface. A second air-pervious surface forms part of the chute wall and is situated upstream of the first air-pervious surface. A second exhaust air chamber adjoins the second air-pervious surface externally of the chute interior and is separate from the first exhaust air chamber. The second exhaust air chamber is in a pneumatic communication with the chute interior through the second air-pervious surface for receiving a second part of the air stream. An air outflow opening is provided in a wall of the second exhaust air chamber and an adjustable valve cooperates with the air outflow opening for varying a flow passage area thereof.

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First Claim