Textiles: spinning – twisting – and twining – Apparatus and processes – Piecing up
Patent
1987-10-16
1988-10-18
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
Piecing up
57 81, 57261, 57405, D01H 1502, D01H 1316
Patent
active
047777907
ABSTRACT:
A method and apparatus for stopping and subsequently restarting an open end spinning machine wherein, upon an electrical power interruption exceeding a predetermined duration, the spinning rotor, sliver feed roller, yarn take-up roller, and yarn winding drum are deactuated, the yarn take-up roller and winding drum are braked to a standstill, and the length of withdrawn yarn during braking is measured and stored, and, upon restarting of the machine, the sliver feed roller is briefly operated to initially deliver a start-up sliver length to the rotor and yarn take-up roller and yarn winding drum are operated in reverse to feed back to the rotor a length of withdrawn yarn corresponding to the measured and stored yarn length in advance of reactuation of the spinning operation.
REFERENCES:
patent: 4472933 (1984-09-01), Raasch et al.
patent: 4494371 (1985-01-01), Morita et al.
patent: 4538408 (1985-09-01), Baltsch et al.
patent: 4611462 (1986-09-01), Pinner et al.
patent: 4628684 (1986-12-01), Morita et al.
patent: 4644742 (1987-02-01), Lovas et al.
patent: 4653261 (1987-03-01), Schreiber et al.
patent: 4660365 (1987-04-01), Raasch
patent: 4712367 (1987-12-01), Lassmann
Petrakes John
W. Schlafhorst & Co.
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