Multi-head sewing machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 30, 1997
Grant Date -
N/A
app pub date -
Mar 5, 1996
filing date -
Mar 7, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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