Fully rotating hook for a lock stitch sewing machine

Details Fully rotating hook for a lock stitch sewing machine Fully rotating hook for a lock stitch sewing machine

1985-10-02

1987-06-09

Reynolds, Wm. Carter

Sewing

Elements

Revolving hooks

112256, D05B 5708, D05B 7102

Patent

active

046711961

ABSTRACT:
A fully rotating hook includes an outer member or rotary loop taker having a track groove therein and an inner shuttle member or bobbin case a projection extending into the groove. A spaced relation between the track groove and the projection is maintained by feeding compressed air into a clearance therebetween. The compressed air is fed through a plurality of air holes opening into the track groove to direct air jets to upper, lower and radially outermost surfaces of the projection on the bobbin case. Furthermore, the loop taker is rotated on a hollow shaft which has an air passage therethrough for feeding compressed air to the plurality of air holes which open into the track groove of the loop taker.

REFERENCES:
patent: 730692 (1903-06-01), Parkes
patent: 1188818 (1916-06-01), Parkes
patent: 1596487 (1926-08-01), Hohmann et al.
patent: 2907165 (1959-10-01), Adams et al.
patent: 3509840 (1970-05-01), Rovin
patent: 3769925 (1973-11-01), Von Hagen

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