Sliver drafting apparatus with rpm sensing and adjusting

Details Sliver drafting apparatus with rpm sensing and adjusting Sliver drafting apparatus with rpm sensing and adjusting

1991-04-05

1992-11-10

Schroeder, Werner H.

Textiles: fiber preparation

Working

Drafting

19243, D01H 574

Patent

active

051612844

ABSTRACT:
A sliver drafting apparatus has a pre-drafting mechanism which simultaneously receives a plurality of running slivers, and includes first and second pairs of drafting rolls between which the slivers pass. The apparatus further has a gathering element disposed downstream of the pre-drafting mechanism for gathering the slivers into a combined sliver and a first delivery roll pair situated downstream of the gathering element for pulling the combined sliver from the gathering element. The apparatus further includes a main drafting mechanism arranged downstream of the first delivery roll pair for receiving the combined sliver therefrom. The main drafting mechanism includes first and second pairs of drafting rolls between which the combined sliver passes. A sliver trumpet is situated downstream of the main drafting mechanism for receiving the combined sliver therefrom; and a second delivery roll pair is situated downstream of the sliver trumpet for pulling the combined sliver from the sliver trumpet.

REFERENCES:
patent: 128618 (1872-07-01), Harris
patent: 3063101 (1962-11-01), Andreani
patent: 4266324 (1981-05-01), Hasegawa et al.
patent: 4512061 (1985-04-01), Hartmannsgruber
patent: 4646391 (1987-05-01), Wolf
patent: 4703431 (1987-10-01), Sako et al.
patent: 4742675 (1988-05-01), Leifeld
patent: 4864694 (1989-09-01), Konig et al.

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