Apparatus for adjusting timing of needle and looptaker of sewing machine
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United States of America Patent
Stats
-
Oct 6, 2009
Grant Date -
Sep 25, 2008
app pub date -
Mar 4, 2008
filing date -
Mar 22, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for adjusting a timing of a needle and a looptaker of a sewing machine provided at a zigzag sewing machine having an upper shaft for driving a needle bar, a lower shaft for driving a looptaker, a machine frame, and a timing belt for connecting and synchronizing the shafts includes a cam member including a first cam surface and a second cam surface, a first arm member and a second arm member supported by the machine frame and a first pulley and a second pulley mounted to the first arm member and the second arm member respectively and always contacting the timing belt, the first pulley following the first cam surface and the second pulley following the second cam surface.
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