Patent ID: 11946182
Assignee: nan
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 13:
14. A sewing machine with an automated upper walking foot stepping height adjustment, the sewing machine comprising:
a mounting assembly including:
an actuator bracket;

an actuator coupled to the actuator bracket and including:
an actuator shaft that extends and retracts;

a drive assembly including:
a drive shaft,
a drive arm coupled to the drive shaft and coupled to the actuator shaft,

and
a guide coupled to the drive shaft; and

a needle drive assembly including:
a needle drive shaft,
a needle drive lever coupled to the needle drive shaft,
a variable drive crank coupled to the needle drive shaft and the guide, and
a needle drive crank coupled to the needle drive shaft;

an upper walking foot coupled to the variable drive crank; and
a needle assembly coupled to the needle drive crank;
wherein selectively extending and retracting the actuator shaft adjusts a stepping height of the upper walking foot.