Patent ID: 6957616

Claim:
A restoring device of a tension adjusting device (A) in a transverse arm ( 12 ) for a sewing machine ( 10 ), the tension adjusting device (A) comprising a main part ( 20 ) with a plurality of tension adjusting frames ( 30 ), micro-adjusting sets ( 40 ) and restoring sets ( 50 ) connected thereto so as to form a tension adjusting mechanism (B), the restoring sets ( 50 ) being controlled by a control set ( 60 ) on the main part ( 20 ), the main part ( 20 ) having an active member ( 24 ) which is driven by an adjusting knob ( 23 ) and the active member ( 24 ) driving a control shaft ( 26 ) on the main part ( 20 ), the control set ( 60 ) having a pressing board ( 61 ) which is pivotably connected to the main part ( 20 ) so as to press and control the restoring set ( 50 ), the control shaft ( 26 ) having a driving member ( 65 ) connected thereto and the pressing board ( 61 ) being driven by the active member ( 24 ) and the driving member ( 65 ).