Controlled braking device for the gripper-thread bobbin of a dou

Details Controlled braking device for the gripper-thread bobbin of a dou Controlled braking device for the gripper-thread bobbin of a dou

1976-12-17

1978-02-21

Krizmanich, George H.

Sewing

Elements

Revolving hooks

242156, D05B 6300

Patent

active

040746453

ABSTRACT:
A controlled braking device for the gripper-thread bobbin of a double lock-stitch sewing machine has a braking element which, by means of a brake piston or plunger in the axial bore of the spindle carrying the bobbin, is shiftable to engage the latter. The plunger is engaged by a rod reaching upwardly through an opening in the bottom of the spindle. The brake element is displaced laterally into engagement with the core of the bobbin or axially thereagainst.

REFERENCES:
patent: 319448 (1885-06-01), Brown
patent: 699067 (1902-04-01), Beitzel
patent: 1470997 (1923-10-01), Miller
patent: 3051108 (1962-08-01), Ketterer
patent: 4009670 (1977-03-01), Mitchell

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