Textiles: spinning – twisting – and twining – Apparatus and processes – Untwisting
Patent
1987-10-13
1988-08-30
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Untwisting
57 31, 8151, D06C 306, D06C 2900
Patent
active
047667192
ABSTRACT:
Apparatus and method for removing real or false twist from a moving fabric in rope form. Fabric is moved along a first path followed by second and third generally vertical paths which define a fabric loop. A twist removal device is located along the first fabric path to remove twist from the fabric. A fabric opening or spreading unit is located along or downstream of said third path with a twist detector located between the fabric opening unit and the nadir of the fabric loop, preferably adjacent the location where the fabric is just begins to spread for detecting direction and magnitude of any twist remaining in the fabric. Controls are operatively associated with the twist detector means and the twist removal device to control further twist removal responsive to detected remaining twist in the fabric.
A preferred twist detector includes spaced parallel cylindrical rolls contactable with the fabric rope on opposite sides thereof. The rolls are supported on longitudinal angularly disposed axles for movement therealong by twist in the fabric.
REFERENCES:
patent: 2759324 (1956-08-01), Dean
patent: 2836012 (1958-05-01), Moorhouse et al.
patent: 3813862 (1974-06-01), Tsuchida
patent: 4106004 (1978-08-01), Kuroda
patent: 4286428 (1981-09-01), Bassani
patent: 4329838 (1982-05-01), Zerle
patent: 4631911 (1986-12-01), Young et al.
Watkins Donald
Young Engineering Inc.
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