Open-end rotor for a spinning machine
AssigneeRieter Machine Works, Ltd.
InventorHerbert Stalder
Life of this patent
Estimating the term…
Abstract
The fiber collecting groove is located at the largest inside diameter of the rotor and is formed by two surfaces which define an angle of aperture .alpha. from 45.degree. to 90.degree.. The bottom of the groove is of a radius of from 0.1 to 0.5 millimeters. Also, the bisector of the angle of aperture .alpha. forms an angle .beta. with the plane of rotation of the groove of a value from 0.degree. to 45.degree. while the yarn take-off direction forms an angle with the plane of rotation of from 0.degree. to 25.degree.. Trash accumulations are reduced to a minimum without detrimentally effecting yarn quality.
Claims13
A rotor for an open-end spinning machine having
- a cavity concentrically disposed about a rotational axis;
- a pair of annular intersecting surfaces within said cavity defining a fiber collecting groove at the largest inside diameter of said cavity;
- a first angle of aperture between said surfaces of from 45.degree. to 90.degree.;
- a rounded groove bottom of a radius from 0.1 to 0.5 millimeters between said surfaces;
- a second angle between a straight line bisecting said first angle and a plane of rotation of said groove of a value from 0.degree. to 45.degree.;
- a third angle between said plane of rotation and a yarn take-off direction from said groove of a value from 0.degree. to 25.degree.;
- and
- an annular edge sufficient to deflect a taken-off yarn between said fiber collecting groove and a yarn take-off tube.
In combination
- a rotor for an open-end spinning machine having a cavity concentrically disposed about a rotational axis;
- a pair of annular intersecting surfaces within said cavity defining a fiber collecting groove at the largest inside diameter of said cavity;
- first angle of aperture between said surfaces of from 45 to 90.degree.;
- a rounded groove bottom of a radius from 0.1 to 0.5 millimeters between said surfaces;
- a second angle between a straight line bisecting said first angle and a plane of rotation of said groove of a value from 0 to 45.degree.;
- and a third angle between said plane of rotation and a yarn take-off direction from said groove of a value from 0.degree. to 25.degree.;
- a rotor cover having a yarn take-off tube projecting into said cavity coaxially of said axis;
- and
- an annular edge sufficient to deflect a taken-off yarn between said fiber collecting groove and said yarn take-off tube.
A rotor for an open-end spinning machine having
- a cavity concentrically disposed about a rotational axis;
- a pair of annular intersecting surfaces within said cavity defining a fiber collecting groove at the largest inside diameter of said cavity;
- a first angle of aperture between said surfaces of 75.degree.;
- a rounded groove bottom of a radius 0.2 millimeters between said surfaces;
- a second angle between a straight line bisecting said first angle and a plane of rotation of said groove of a value of 15.degree.;
- and
- a third angle between said plane of rotation and a yarn take-off direction from said groove of a value of 17.degree..
A rotor for an open-end spinning machine having
- a cavity concentrically disposed about a rotational axis;
- a pair of annulular intersecting surfaces within said cavity defining a fiber collecting groove at the largest inside diameter of said cavity;
- a first angle of aperture between said surfaces of 45.degree.;
- a rounded groove bottom of a radius of 0.2 millimeters between said surfaces;
- a second angle between a straight line bisecting said first angle and a plane of rotation of said groove of a value of 251/2.degree.;
- and
- a third angle between said plane of rotation and a yarn take-off direction from said groove of a value of 17.degree..
A rotor for an open-end spinning machine having
- a cavity concentrically disposed about a rotational axis;
- a pair of annular intersecting surfaces within said cavity defining a fiber collecting groove at the largest inside diameter of said cavity;
- a first angle of aperture between said surfaces of 45.degree.;
- a rounded groove bottom of a radius from 0.1 to 0.2 millimeters between said surfaces;
- a second angle between a straight line bisecting said first angle and a plane of rotation of said groove of a value of 221/2.degree.;
- and
- a third angle between said plane of rotation and a yarn take-off direction from said groove of a value of 0.degree..
Dependencies are inferred from the claim text.