Rotary hook

Details Rotary hook Rotary hook

1985-06-12

1987-10-20

Reynolds, Wm. Carter

Sewing

Elements

Revolving hooks

D05B 5726

Patent

active

047006439

ABSTRACT:
A fully rotating hook includes an inner bobbin case, an outer loop taker mounted about the bobbin case, the loop taker having a track groove formed therein, a rotating member for rotating the loop taker such that relative rotation occurs between the loop taker and the bobbin case, and a stopper member for preventing rotation of the bobbin case with the loop taker while the loop taker is rotating. The bobbin case includes a case body having a bottom and accommodated in the loop taker, and a track projection member made of synthetic resin material having a substantially small friction coefficient and removably fixed to the case body. The track projection member includes a flange-like track projection fitting within the track groove of the loop taker and a surrounding portion for surrounding the bottom of the loop taker.

REFERENCES:
patent: 2250121 (1941-07-01), Zonis
patent: 2673541 (1954-03-01), Biesemeyer
patent: 2974618 (1961-03-01), Kuhar
patent: 3074367 (1963-01-01), Habedank et al.
patent: 3146744 (1964-09-01), Bradshaw
patent: 3343510 (1967-09-01), Attwood et al.
patent: 4393798 (1983-07-01), Cheng
patent: 4572091 (1986-02-01), Gustmann et al.

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