Textiles: spinning – twisting – and twining – Apparatus and processes – Twist setting
Patent
1977-05-23
1979-05-15
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Twist setting
57282, 57332, D02G 102, D02G 104
Patent
active
041540514
ABSTRACT:
An apparatus for manufacturing a three-dimensioned crimp filament comprising: a drive means for pulling filaments; a group of guide rollers arranged in a reverse U-shaped roller group, said roller group being provided ahead of said drive means and adapted to be rotated about a longitudinal axis such as to give forward and rearward portions of a plurality of filaments while stretched with a single twist formed thereon and being transferred by said drive means mutually opposite twisting actions; a pair of rotative rollers each provided with a groove, said roller pair being provided immediately after the roller at the forward end in said roller group and provided with a non-slip means for pulling the single twisted forward portion of said filaments at a transfer speed such that the filaments of said forward portion form into a double twist and are cooled sufficiently to effect a thermal set; a heating means provided ahead of said roller group and serving to heat the filaments formed with a double twist; a single twist transfer roller group provided ahead of said heating means and consisting of a plurality of rollers and given a predetermined rotational tension for guiding filaments formed with a single twist; and a means for stopping spread of double twist, said stopping means being provided on the last roller in said roller group.
REFERENCES:
patent: 2959906 (1960-11-01), Richter
patent: 3034277 (1962-05-01), Richter
patent: 3328950 (1967-07-01), Scragg et al.
patent: 3525205 (1970-08-01), Antoni et al.
patent: 3774384 (1973-11-01), Richter
patent: 3777469 (1973-12-01), Spurgeon
patent: 3831365 (1974-08-01), Smith
Hueschen Gordon W.
Petrakes John
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