Needle oscillating mechanism for a sewing machine

Details Needle oscillating mechanism for a sewing machine Needle oscillating mechanism for a sewing machine

1979-01-23

1982-04-27

Nerbun, Peter P.

Sewing

Work manipulating

Guides

112158E, D05B 302

Patent

active

043264727

ABSTRACT:
A needle oscillating mechanism for use in a sewing machine is disclosed, wherein a rotatable cam member is provided for controlling the position of lateral oscillation of a needle, and a contact finger engaged with the cam member or disengaged therefrom synchronously with rotation of a main shaft of the sewing machine is coupled to the needle through a disconnectable coupling means. Disengagement of the contact finger from the cam member is not transmitted to the needle due to disconnection of the coupling means, so that the needle is held at the same lateral position by the action of brake means. Posterior to rotation of the cam member with the contact finger kept disengaged therefrom, engagement of the contact finger with the cam member is effected while causing connection of the coupling means, thereby shifting the needle to a lateral position in response to the cam surface of the cam member with which the contact finger is engaged.

REFERENCES:
patent: 3820485 (1974-06-01), Bradus et al.
patent: 4235176 (1980-11-01), Yamashita et al.
patent: 4246858 (1981-01-01), Ogawa

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