Pattern drum control device in a circular knitting machine

Details Pattern drum control device in a circular knitting machine Pattern drum control device in a circular knitting machine

1979-03-19

1980-10-07

Reynolds, Wm. Carter

Textiles: knitting

Independent-needle machines

Circular

66237, D04B 1574

Patent

active

042260965

ABSTRACT:
For stepwise advancing a pattern drum in a circular knitting machine there is provided a device comprising a peripheral tooth formation on the pattern drum, a pawl capable of engaging the tooth formation and pivotally supported on a support which is caused to swing at each revolution of the needle cylinder under the action of a cam rigid with the needle cylinder. The cam has a first radially increasing part extending preferably for a half of a circle, a following second radially increasing part considerably steeper than the first part, and a progressively radially decreasing part. The cam causes the pawl to advance the pattern drum by two steps. When the pattern drum is to be advanced by a single step the pawl is disengaged from the tooth formation by an angle lever which is controlled by control pegs arranged on the pattern drum according to a control pattern.

REFERENCES:
patent: 1784186 (1930-12-01), Howie
patent: 2255068 (1941-09-01), Lawson et al.
patent: 2317268 (1943-04-01), Green
patent: 2460487 (1949-02-01), Bristow
patent: 2927447 (1960-03-01), Mahler
patent: 3093987 (1963-06-01), Zahradka et al.
patent: 3380265 (1968-04-01), Peberdy
patent: 3766753 (1973-10-01), Schnurrer
patent: 3835668 (1974-09-01), Schiebel et al.

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