Spinning box for an open-end spinning machine

Details Spinning box for an open-end spinning machine Spinning box for an open-end spinning machine

1998-05-14

1999-12-21

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Piecing up

57301, 57304, 57406, D01H 1326

Patent

active

060032952

ABSTRACT:
In order that stray fibers do not settle in the rotor during the spinning start process at the spinning box of a rotor spinning machine, an openable air valve is provided for initially cleaned the rotor by delivering an air current into the rotor either by drawing ambient air through the valve as a consequence of the spinning vacuum or by blowing in compressed air through the valve. As an alternative to known spring-loaded ball valves pose the danger that the spring ceases to perform due to deposits of dust and fibers, the present invention provides a magnet arranged in association with the valve seat in the area of its valve opening to attract the ball, which consists of a magnetizable material, and thereby hold the ball in closed position.

REFERENCES:
patent: 3683446 (1972-08-01), Tell
patent: 4038812 (1977-08-01), Stahlecker
patent: 4069654 (1978-01-01), Roehrich
patent: 4485616 (1984-12-01), Morita et al.
patent: 4487012 (1984-12-01), Horiuchi et al.
patent: 4676059 (1987-06-01), Artzt et al.
patent: 5640839 (1997-06-01), Novotny et al.
patent: 5916118 (1999-06-01), Wassenhoven et al.
patent: 5916119 (1999-06-01), Lovas et al.

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