Title: Method and apparatus for eliminating impurities from an open-end spinning machine

Abstract: An air duct is located opposite a separating opening which opens into the space containing the fiber opening roll so as to receive impurities centrifuged from the opening roll. The separating opening has a wall which forms an acute angle with the opposite wall of the duct so that the impurities can be deflected off the duct wall into the same direction as the air flow in the duct. The duct is narrowed downstream of this point in order to accelerate the air flow and entrained impurities out of the machine via a suction duct. This also stretches out any loose fibers in the flow for rapid removal in order to prevent clogging of the suction duct.

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Inventors: Stalder, Herbert (Winterthur, CH)

Application Number: 656202
Filing Date: 1976-02-09
Publication_date: 1977-03-01
Assignee: Rieter Machine Works, Ltd. (Winterthur, CH)
Primary Class(es): 57/301 57/411
Other Classes:
US Patent Ref:

3777466	Dec, 1973	Kobele et al.	57/58.
3792575	Feb, 1974	Doudlebsky et al.	57/56.
3797218	Mar, 1974	Landwehrkamp et al.	57/58.
3800521	Apr, 1974	Doudlebsky et al.	57/58.
3839764	Oct, 1974	Clayton	57/56.
3884027	May, 1975	Schumann et al.	57/58.
3892063	Jul, 1975	Doudlebsky et al.	57/56.

Other Refs:
Primary Examiner: Watkins, Donald E.
Assistant Examiner:
Attorney: Kenyon & Kenyon Reilly Carr & Chapin