Apparatus for measuring the weft thread position and for alignin

Details Apparatus for measuring the weft thread position and for alignin Apparatus for measuring the weft thread position and for alignin

1988-05-05

1990-01-23

Schroeder, Werner H.

Textiles: cloth finishing

Stretching or spreading and working

Weft angle adjusting

26 515, D06H 312

Patent

active

048948918

ABSTRACT:
The invention is a mechanical method for measuring the position of a weft thread in a moving textile fabric and aligning the weft thread. The invention is also an apparatus for carrying out the method. The method comprises introducing substantially at points, a tension (in the direction of the weft thread) and to scan at least in two places the forces that appear in the textile and therefrom determine the draft angle. The method also emcompasses stretching the textile sheet with increasing force in the direction of travel over a follower stretching device and measuring the propelling/dragging forces on the stretching device and determining the draft angle from those measurements.

REFERENCES:
patent: 2795029 (1957-06-01), Robertson et al.
patent: 3146511 (1964-09-01), Hoffman
patent: 3167843 (1965-02-01), Robertson et al.
patent: 3324718 (1967-06-01), Gibb
patent: 3636598 (1972-01-01), Hannaway
patent: 3751774 (1973-08-01), Hannaway
patent: 3839767 (1974-10-01), Leitner et al.
patent: 4517712 (1985-05-01), Diggle Jr. et al.

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