Draft roll system for spinning machines

Details Draft roll system for spinning machines Draft roll system for spinning machines

1984-01-20

1985-12-31

Rimrodt, Louis K.

Textiles: fiber preparation

Working

Drafting

19293, 19236, D01H 586

Patent

active

045611521

ABSTRACT:
The present invention provides a draft roll arrangement in a spinning frame in which the apron bottom roll is longitudinally divided into two sections at a location along its length selected to be within a range for which torsion of the apron bottom roll does not pose a problem in spinning, and in which the respective bottom rolls are operatively connected to one another in such a manner that one of the ends of the back and front bottom rolls and one apron bottom roll section are connected to a driving source and the drive for the other apron bottom roll section is derived through the back and front bottom rolls. In a preferred embodiment, the respective apron bottom roll sections are associated with rotational angle sensors whose output rotational angle signals are supplied to a control unit. When the difference in the rotational angle has exceeded a preset value, an output signal indicating such state is issued from the control unit.

REFERENCES:
patent: 2686940 (1954-08-01), Burnham
patent: 3869759 (1975-03-01), Savageau et al.
patent: 4195389 (1980-04-01), Schulz et al.
patent: 4314388 (1982-02-01), Hartmannsgruber et al.
patent: 4398320 (1983-08-01), Kubota et al.

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