Textiles: cloth finishing – Expanding device for textile webs – Web-condition-responsive operation control
Patent
1981-04-20
1984-02-28
Mackey, Robert
Textiles: cloth finishing
Expanding device for textile webs
Web-condition-responsive operation control
26 88, 226 15, 226 17, D06C 306
Patent
active
044334605
ABSTRACT:
Apparatus for spreading and guiding a web of textile fabric or the like being longitudinally fed, comprising a pair of web spreading and guiding devices disposed at opposite sides of the web, each device comprising a pair of rotary members rotatably supported in generally axially spaced apart and opposed relation to each other, with the axis of rotation of one of the rotary members being tilted relative to the axis of rotation of the other of the rotary members. The tilted rotary member is provided on the periphery thereof with a circular array of pushing members projecting toward the corresponding periphery of the other rotary member. As the two rotary members are rotated about their respective axes by friction with the running web held therebetween, the pushing members successively come to engage a selvage of the running web at a nipping point and disengage from the selvage at a releasing point. As the width or direction of the incoming web changes, the tilted rotary member is nutated about the axis of rotation of the other rotary member and simultaneously displaced along the axis so as to change the nipping point while keeping the releasing point substantially unchanged.
REFERENCES:
patent: 71990 (1867-12-01), Corpe
patent: 1412980 (1922-04-01), Tackaberry
patent: 2581821 (1952-01-01), Sutton
patent: 3094760 (1963-06-01), Pickup
patent: 3335474 (1967-08-01), Cho
patent: 3822448 (1974-07-01), Cho
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