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

Claim 4:
5. A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit 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 the actuator shaft, and
a guide coupled to the drive shaft; and

a needle drive assembly including:
a needle drive shaft configured to replace a needle drive shaft of the sewing machine,
a variable drive crank coupled to the guide and the needle drive shaft, and
a needle drive crank coupled to the needle drive shaft and configured to couple to a crank arm of a sewing machine, and the crank arm drives the needle drive assembly;

wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.