GAS-CONVEYED THREADING DEVICE FOR SEWING MACHINE

Title:

GAS-CONVEYED THREADING DEVICE FOR SEWING MACHINE

Document Type and Number:

WIPO Patent Application WO/2014/010108

Kind Code:

A1

Abstract:

Problem: To dispense with a safety device for avoiding a transition from a looper-threading state to a stitch-forming state during a gas supply operation of a gas supply source, and to readily thread the looper with one touch, simplified in terms of mechanism and readily performed with a small number of one-handed operations in terms of operation. Solution: A meshing clutch (60) for transmitting drive force from a sewing machine motor (M) to a gas supply source (40) during looper threading and to a drive shaft (5) for driving a looper-containing stitch-forming device during stitch formation, is allowed to freely come into contact with or separate from a gas feed drive unit (61) for transmitting drive force to the gas supply source or a stitch-forming drive unit (64) secured to one end of the drive shaft and used for transmitting drive force to the stitch-forming device in accordance with a manual operation of a manual operation unit for switching between looper-threading and stitch-formation, and is configured so that drive force is transmitted from the sewing machine motor via a hollow clutch shaft (22) and so that a connected state is maintained when connected to the gas feed drive unit.

Inventors:

SAKUMA TOHRU (JP)
ISHIKAWA MASATO (JP)

Application Number:

PCT/JP2012/077737

Publication Date:

January 16, 2014

Filing Date:

October 26, 2012

Export Citation:

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Assignee:

SUZUKI MFG (JP)

International Classes:

D05B63/00

Foreign References:

JP4741701B2	2011-08-10
JPS436191B
JP2005308142A	2005-11-04
JPH0527353U	1993-04-09
JP2865470B2	1999-03-08
JP3355214B2	2002-12-09
JP4088504B2	2008-05-21
JP2008119361A	2008-05-29
JP2865470B2	1999-03-08
JP3355214B2	2002-12-09
JP4088504B2	2008-05-21
JP2008119361A	2008-05-29
JP4741701B2	2011-08-10

Other References: