Adjustable needle bar crank drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 4, 1984
Grant Date -
N/A
app pub date -
Mar 16, 1981
filing date -
Mar 21, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for driving at least one needle bar on embroidery or sewing machines from a main drive shaft by means of a crank drive. In order to create a simple construction of high efficiency, low noise and little wear, the axis of rotating of the crank mechanism is arranged parallel to the main drive shaft. The bearing for defining the axis of rotation of the crank mechanism is adjustable in height such that the magnitude of the stroke of the needle is unchanged.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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