Slider needles for warp knitting machines
First Claim
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1. A slider needle for a warp knitting machine comprising:
- a slider having an opposing pair of parallel, lateral surfaces; and
a needle having a needle shaft, said shaft having a forward face and a slot formed in said forward face straddled by a pair of opposing walls of substantially equal thickness and having an interior bed at its deepest position, said slider being positioned in said slot, said slot being sized to allow longitudinal reciprocation therein by said slider, said slot having an inner portion proximate to said interior bed having a uniform width; and
an outer portion proximate to said forward face, contiguous to said inner portion and wider than said inner portion to provide walls of predetermined thickness, the differences in width between said inner portion and said outer portion being at least equivalent to the thickness of one of said walls at its thickest point.
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Abstract
There is provided a slider needle for warp knitting machines, comprising a slider. The slider is guided by the opposing side walls of a slot cut in the front face of a needle shaft. The opening of the slot carrying the slider, opposite the slot base, is widened or flared in such a manner that there is provided such a separation as to prevent contact between the slider and the forward portion of the slot wall. Thus, abrasion of the forward face into sharp edges which could negatively affect the stitch threads is thereby avoided.
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Citations
7 Claims
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1. A slider needle for a warp knitting machine comprising:
- a slider having an opposing pair of parallel, lateral surfaces; and
a needle having a needle shaft, said shaft having a forward face and a slot formed in said forward face straddled by a pair of opposing walls of substantially equal thickness and having an interior bed at its deepest position, said slider being positioned in said slot, said slot being sized to allow longitudinal reciprocation therein by said slider, said slot having an inner portion proximate to said interior bed having a uniform width; and
an outer portion proximate to said forward face, contiguous to said inner portion and wider than said inner portion to provide walls of predetermined thickness, the differences in width between said inner portion and said outer portion being at least equivalent to the thickness of one of said walls at its thickest point. - View Dependent Claims (2, 3, 5, 6, 7)
- a slider having an opposing pair of parallel, lateral surfaces; and
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4. A slider needle according to claim 4 wherein the outer end of each of said walls has an interior, planar bevel.
Specification