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

Claim 17:
18. A method of adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the method comprising:
installing a mounting assembly including an actuator bracket to a sewing machine;
coupling an actuator with an actuator shaft that extends and retracts to the actuator bracket;
coupling a drive arm to the actuator shaft;
coupling the drive arm to a drive shaft;
coupling a guide to the drive shaft; and, coupling a variable drive crank to the guide and a needle drive shaft of the sewing machine;
wherein the variable drive crank includes an elongated slot; and
the method further comprises coupling a pin to the guide and the pin is configured to move within the slot of the variable drive crank.