Title:
DEVICE FOR CONSTANT TIGHTNESS OF SEWING MACHINE THREAD
Document Type and Number:
Japanese Patent JP2001137585
Kind Code:
A
Abstract:
To maintain continuously constant tightness of a tread (balance between needle and bobbin threads forming a seam) irrespective of changes in the sewing speed of a sewing machine in sewing operation.
This device for constant tightness of a sewing machine thread comprises an operating pedal 2 for control of the rotating speed of a sewing machine, an operating member 9 movably supported on a sewing machine arm 1, a regulating member 6A for varying a needle thread lift according to the movement of the operating member, and a coupling member 10 coupling the operating pedal 2 and the operating member 9.
Inventors:
TAKEDA IKUKO
Application Number:
JP32499199A
Publication Date:
May 22, 2001
Filing Date:
November 16, 1999
Export Citation:
Assignee:
JUKI KK
International Classes:
D05B45/00; D05B63/00; (IPC1-7): D05B45/00
Attorney, Agent or Firm:
Fujii Motoyasu