Textiles: knitting – Fabric manipulation
Patent
1993-11-02
1995-05-23
Crowder, Clifford D.
Textiles: knitting
Fabric manipulation
D04B 3500
Patent
active
054170893
ABSTRACT:
A method and apparatus for use in a circular knitting machine to form an end closure in a knitted tube made of thermoplastic yarn. The apparatus includes a tube constrictor mounted on the knitting machine for constricting the knitted tube formed by the knitting machine to form a generally solid, compact mass. The tube constrictor includes a plurality of constricting elements which define an aperture through which the knitted tube extends. The constricting elements are moveable between an open position and a closed position in which the knitted tube is gathered into a generally solid compact mass. A hot-air nozzle connected to a hot-air source is engageable with the air passage in the tube constrictor for directing a stream of hot air through said passage to sever and fuse said compact mass and to form a heat-sealed closure at one end of the tube segment severed from the knitted tube.
REFERENCES:
patent: 3017314 (1962-04-01), Keberus et al.
patent: 3234072 (1966-02-01), Dreeben
patent: 3340707 (1967-08-01), Currier
patent: 3550402 (1970-01-01), Colton
patent: 4069090 (1978-04-01), Boyer
patent: 4102727 (1978-07-01), Bell
patent: 4151651 (1979-05-01), Coggins et al.
patent: 4463542 (1984-08-01), Greenawalt
Leaflet 20G for Leister-dated Sep. 1990.
Crowder Clifford D.
Worrell Jr. Larry D.
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