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US3864943A Expired / Lapsed US ⏱️ 0.0 years remaining

Warp knitting or raschel machine

Assignee: LIBA Maschinenfabrik GmbH
•
Filing: 1973-09-06
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Granted: 1975-02-11
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Expires: 1993-09-06
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Abstract

Abstract A warp knitting or Raschel machine with means for feeding filler thread to the knitting implements and with a sinker arrangement mounted above the needles, is provided with a plurality of filler sinkers extending into the space between trick plates and needles, and movably mounted below the needles. The filler sinkers perform a movement consisting of consecutive horizontal and vertical sections in timed relationship with the needle action and cooperate with the sinker arrangement to hold a filler thread brought behind the back side of the needles in place during the rising of the needles.

Inventors

  • 👤 Roland Wunner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 12:41
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 209 words
In a warp knitting or Raschel machine comprising a row of vertical needles, a plurality of thread guides for supplying warp thread to said needles, a plurality of trick plates with knockover edges, means for feeding filler thread to said needles for producing knitted fabrics, a plurality of filler threads being prepared to arrive horizontally at the level of the upper edge of said trick plates, a sinker arrangement consisting of a plurality of sinker plates disposed above said needles and above said trick plates, said sinker plates performing a substantially orbital movement in timed relationship to the needle movement, and a plurality of filler sinkers extending into the space between said trick plates and said needles and movably mounted below said sinker arrangement, means for imparting to said filler sinkers a substantially rectangular movement consisting of consecutive horizontal and vertical sections in timed relationship with the needle action and thus with the operation of said sinker arrangement, said filler sinkers being adapted to separate a filler thread and transport it to the back side of said needles and cooperate at this position and instant with said sinker arrangement which holds the filler thread down to the upper edge of said trick plates during the rising of said needles.
Claim 2
Dependent Claim 209 words
In a warp knitting or Raschel machine comprising a row of vertical needles, a plurality of thread guides for supplying warp thread to said needles, a plurality of trick plates with knockover edges, means for feeding filler thread to said needles for producing knitted fabrics, a plurality of filler threads being prepared to arrive horizontally at the level of the upper edge of said trick plates, a sinker arrangement consisting of a plurality of sinker plates disposed above said needles and above said trick plates, said sinker plates performing a substantially orbital movement in timed relationship to the needle movement, and a plurality of filler sinkers extending into the space between said trick plates and said needles and movably mounted below said sinker arrangement, means for imparting to said filler sinkers a substantially rectangular movement consisting of consecutive horizontal and vertical sections in timed relationship with the needle action and thus with the operation of said sinker arrangement, said filler sinkers being adapted to separate a filler thread and transport it to the back side of said needles and cooperate at this position and instant with said sinker arrangement which holds the filler thread down to the upper edge of said trick plates during the rising of said needles.
Claim 3
Dependent Claim 54 words
A warp knitting machine according to claim 1, wherein said filler sinkers remain between the trick plates during their entire movement cycle, the tips of said filler sinkers extending between adjacent said sinker plates while separating and transporting the filler thread, and extending between said needles and said trick plates in their foremost position.
Claim 4
Dependent Claim 39 words
A warp knitting machine accordinG to claim 1, wherein the front part of said filler sinkers is at least as wide as said needles for clearing the needle zone of said filler thread during the rising of said needles.

References Cited (Backward Citations)

US1206179A Cited
US1951104A Cited
US2943468A Cited
US2984998A Cited
US3460357A Cited
US3707853A Cited
US3718010A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-02-10 1978-08-12 1979-02-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-02-10 1982-08-12 1983-02-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-02-10 1986-08-12 1987-02-11 $7700.00 Window Closed / Lapsed

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