Sewing machine with adjustable stepping height and related methods
OwnerSteven Marcangeloinventor
Life of this patent
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Abstract
A kit for adding or replacing an automated upper walking foot stepping height adjustment to a sewing machine, the kit includes a mounting assembly including an actuator bracket, an actuator coupled to the actuator bracket, a drive assembly, and a needle drive assembly. The actuator includes an actuator shaft that extends and retracts. The drive assembly includes a drive shaft, a drive arm coupled to the drive shaft and the actuator shaft, and a guide coupled to the drive shaft. The needle drive assembly includes a variable drive crank coupled to the guide and configured to couple to a needle drive shaft of a sewing machine. Selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.
Claims25
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 lever coupled to the needle drive shaft and configured to drive a needle assembly of a sewing machine;
- wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot.
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.
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;
- a pin;
- and
- a needle drive assembly including:
- a variable drive crank coupled to the guide and configured to couple to a needle drive shaft of the sewing machine;
- wherein selectively extending and retracting the actuator shaft selectively adjusts a stepping height of an upper walking foot, and
- the variable drive crank includes an elongated slot and the pin is configured to move within the slot, and selectively extending and retracting the actuator shaft adjusts a position of the pin along a length of the slot.
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.
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.
A method of manufacturing a sewing machine with an automated upper walking foot stepping height adjustment, 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;
- coupling a variable drive crank to the guide and a needle drive shaft;
- coupling a needle drive lever to the needle drive shaft;
- coupling a needle assembly to the needle drive lever;
- and
- coupling an upper walking foot to the variable drive crank.
Dependencies are inferred from the claim text.