AIR-DRIVEN THREADING DEVICE FOR SEWING MACHINE

Title:

AIR-DRIVEN THREADING DEVICE FOR SEWING MACHINE

Document Type and Number:

WIPO Patent Application WO/2012/172704

Kind Code:

A1

Abstract:

Problem: To thread a looper with a one-touch operation. Solution: Provided is a looper threading and sewing switching mechanism (30) comprising a push-button (33) for push operation of a push-button shaft (32) from which a control pin (31) protrudes; a control groove cam (38) comprising first through fourth control groove cam sections (34 - 37) that receive the control pin; a link shift plate (40) that supports a thread guide section and that by using a first spring (39) is snapped toward a threading state in which a thread guide outlet of the thread guide section is in contact with a looper thread inlet; and a link positioning plate (82) comprising a peripheral surface (80) and an interlocking cutaway section (81) that rotate integrally with a main shaft (2) and with which a top section (41) of the push-button shaft comes into contact.

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OVERLOCK SEWING MACHINE

Inventors:

SAKUMA KOUICHI (JP)
ISHIKAWA MASATO (JP)
SATOU MITSURU (JP)

Application Number:

PCT/JP2011/075977

Publication Date:

December 20, 2012

Filing Date:

November 10, 2011

Export Citation:

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Assignee:

SUZUKI MFG (JP)
SAKUMA KOUICHI (JP)
ISHIKAWA MASATO (JP)
SATOU MITSURU (JP)

International Classes:

D05B63/00; D05B57/02

Foreign References:

JP2865470B2	1999-03-08
JP3355214B2	2002-12-09
JP4088504B2	2008-05-21
JP2008119361A	2008-05-29
JP2011062501A	2011-03-31
JP2008237551A	2008-10-09
JP2865470B2	1999-03-08
JP3355214B2	2002-12-09
JP4088504B2	2008-05-21
JP2008119361A	2008-05-29
JP2011062501A	2011-03-31

Other References: