Needle selector for knitting machine
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United States of America Patent
Stats
-
Feb 20, 1990
Grant Date -
N/A
app pub date -
Apr 15, 1988
filing date -
Apr 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a knitting machine, a needle selector having jacks fitted respectively in needle grooves formed in one of a cylinder, a dial and a needle bed is provided. A jack groove cam has a raising cam face for moving the jacks along their respective axes. A control electromagnet is arranged in facing relation to one of the jacks at a yarn feeding position on a stationary side. The control electromaget is excited in response to a needle-selecting signal to attract the jack to bring its butt into engagement with the raising cam face. A jack holding cam is arranged in juxtaposed relation to the other rocking end of the jack at the yarn feeding position. The jack holding cam has a cam face which is so magnetized as to attract the jack toward the jack groove cam. A welt cam is arranged at such a position as to clamp the jack between the cam face of the jack holding cam and a cam face of the welt cam, which is magnetized to attract the jack. Needle selection is carried out with respect to the jacks passing between both the cams, in response to presence and absence of the needle-selecting signal.
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Family
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