Textiles: spinning – twisting – and twining – Apparatus and processes – Unitary multiple twist devices
Patent
1977-08-29
1979-01-23
Watkins, Donald
Textiles: spinning, twisting, and twining
Apparatus and processes
Unitary multiple twist devices
19112, D01G 1514, D01H 112
Patent
active
041353552
ABSTRACT:
An opening roller for an open-end spinning machine carries an array of pins on its external surface. The pins are arranged in repeating patterns, each pattern comprising from 7 to 12 axially extending rows of equally-spaced pins, the relative dispositions of the pins in adjacent rows being such that the pins lie on lines parallel to a helix which passes through points in the first lines of two adjacent patterns, which points are axially off-set by three times the axial spacing of the pins in 7- or 8-row patterns, four times the axial spacing of the pins in 9- or 10-row patterns or five times the axial spacing of the pins in 11- or 12-row patterns. This arrangement reduces the risk of entanglement of fibres combed by one pin with fibres combed by an adjacent pin in the next row and reduces the tendency of the pins to direct fibres axially along the roller. An open-end spinning machine incorporating the roller is also disclosed.
REFERENCES:
patent: 1154856 (1915-09-01), Graf
patent: 2488442 (1949-11-01), Snape
patent: 2939183 (1960-06-01), Tempest et al.
patent: 3737951 (1973-06-01), MacKie et al.
patent: 3968542 (1976-07-01), Hollingsworth
Watkins Donald
Wm. R. Stewart & Sons (Hacklemakers) Ltd.
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