Multi-head sewing machine

Details Multi-head sewing machine Multi-head sewing machine

1996-03-05

1997-12-30

Lewis, Paul C.

Sewing

Stitch forming

Multiple machines

112221, 112 98, 112163, D05B 2500, D05C 302

Patent

active

057018324

ABSTRACT:
Disclosed is a multi-head sewing machine having an improved structure for driving a main shaft and a lower shaft for driving needle bars and thread take-up levers so as to prevent distortion of these shafts, in turn, variation of stitch performance in the respective heads from occurring. The sewing machine comprises a plurality of heads, having at least a needle bar and a thread take-up lever, arranged in a row; a plurality of shuttle holders corresponding to the number of heads, each supporting therein a shuttle, arranged in a row; a main shaft, penetrating the row of heads, which rotates to drive the needle bar and the thread take-up lever in each head; and a lower shaft, penetrating the row of shuttle holders, which rotates to drive the shuttle in each shuttle holder; wherein the sewing machine further comprises a drive shaft, extended parallel to the main shaft, which is rotationally driven by a drive motor, the rotational driving force of the drive shaft being adapted to be transmitted to the main shaft at more than one position.

REFERENCES:
patent: 3468273 (1969-09-01), Lester
patent: 3783811 (1974-01-01), Schmedding et al.
patent: 4641591 (1987-02-01), Draghicchio
patent: 4852506 (1989-08-01), Salganik

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