Sewing – Special machines – Buttonhole
Patent
1996-02-21
1999-02-02
Izaguirre, Ismael
Sewing
Special machines
Buttonhole
112199, D05B 508, D05B 5732
Patent
active
058651322
ABSTRACT:
A looper drive assembly for a buttonhole sewing machine includes a long arm which is driven by a double cam, followers and an oscillating plate at one end and the arm generally reciprocates longitudinally. V-shaped plates are pivoted at a second end of the arm. Ends of the V-shaped plates are connected to rocking links which carry the looper needles. The links are pivoted on shafts and support the V-shaped plates and the second end of the arm. As the arm reciprocates, the V-shaped plates swing, pull and push lower ends of the link and oscillate the links around shafts for alternating engagement of the looping needles with thread carried through a fabric by a main needle.
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Papajewski Gerd
Papajewski, deceased Rudy
AMF Reece, Inc.
Creighton Wray James
Izaguirre Ismael
Narasimhan Meera P.
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