Needle bar driver assembly for a sewing machine
OwnerPaul Block, Michael Lydick +1inventors
InventorsPaul Block, Michael Lydick, Lewis Doom
Life of this patent
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Abstract
There is provided a needle bar driver assembly for an overlock sewing machine having a needle for penetrating a material to be sewed and a needle bar for securing the needle thereto. The needle bar driver assembly includes a main shaft, a floating pivot, and a linking mechanism. The main shaft provides an oscillating motion. The linking mechanism is coupled to the main shaft and to the floating pivot, and transfers the oscillating motion of the main shaft to the needle bar while pivoting on the floating pivot.
Claims21
A needle bar driver assembly for an overlock sewing machine having a needle for penetrating a material to be sewed and a needle bar for securing the needle thereto, the needle bar driver assembly comprising:
- a main shaft for providing an oscillating motion;
- a floating pivot;
- an actuating piston coupled to the floating pivot;
- and
- a linking mechanism, coupled to the main shaft and to the floating pivot, for transferring the oscillating motion of the main shaft to the needle bar while pivoting on the floating pivot.
A needle bar driver assembly for an overlock sewing machine having a needle for penetrating a material to be sewed and a needle bar for securing the needle thereto, the needle bar driver assembly comprising:
- a main shaft for providing an oscillating motion;
- an actuating piston for providing reciprocating motion;
- a floating pivot connected to the actuating piston;
- and
- a linking mechanism, coupled to the main shaft and to the floating pivot, for transferring the oscillating motion of the main shaft to the needle bar while pivoting on the floating pivot.
A needle bar driver assembly for an overlock sewing machine having a needle for penetrating a material to be sewed and a needle bar for securing the needle thereto, the needle bar driver assembly comprising:
- a main shaft for providing an oscillating motion;
- an actuating piston for providing reciprocating motion;
- a floating pivot connected to the actuating piston;
- and
- a linkage, coupled to the main shaft and to the floating pivot, and having a configurable geometry dependent upon a current position of the floating pivot, for transferring the oscillating motion of the main shaft to the needle bar while pivoting on the floating pivot.
Dependencies are inferred from the claim text.