Patent US3916649A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3916649A Expired / Lapsed US ⏱️ 0.0 years remaining

Weft inserting apparatus for a warp knitting machine

Assignee: Individual
•
Filing: 1975-03-27
•
Granted: 1975-11-04
•
Expires: 1995-03-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A plurality of weft threads pass through a chain type of thread guide and are picked up by a tensioning chain for presentation to the magazine chain of a warp knitting machine. Weft thread is supplied by a plurality of spools located at one side of the machine. The thread guide comprises a single chain or a pair of chains arranged in the form of a figure ''''8''''. The tensioning means is an endless chain equipped with gripping clip devices for taking the free end of the thread from the guide means and drawing it away therefrom. The angle of the direction of travel of the thread guide chain relative to the direction of travel of the chain of the tensioning means is such that the tensioning means draws the thread from the guide means at an angle of substantially 90* during the travel of the respective chains. In this fashion, the friction frequently associated with prior art devices is significantly reduced.

Inventors

  • 👤 Karl Kohl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 13:42
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 92 words
An improved weft inserting apparatus for use with a warp knitting machine comprising: a plurality of weft thread supplying spools; a flexible band type of thread guide means for moveably guiding of said threads, said threads passing through said thread guide means; an endless weft tensioning means for taking said threads from said guide means and drawing them away therefrom; and, a first and second endless band means for taking each individual thRead from said thread guide means and said tensioning means respectively and presenting said threads to said warp knitting machine.
Claim 2
Dependent Claim 92 words
An improved weft inserting apparatus for use with a warp knitting machine comprising: a plurality of weft thread supplying spools; a flexible band type of thread guide means for moveably guiding of said threads, said threads passing through said thread guide means; an endless weft tensioning means for taking said threads from said guide means and drawing them away therefrom; and, a first and second endless band means for taking each individual thRead from said thread guide means and said tensioning means respectively and presenting said threads to said warp knitting machine.
Claim 3
Dependent Claim 28 words
The apparatus of claim 1 wherein said thread guide means comprises the type including and endless chain, said endless chain being in the form of a figure ''''8''''.
Claim 4
Dependent Claim 28 words
The apparatus of claim 1 wherein said thread guide means comprises the type including a pair of endless chains placed together in the form of a figure ''''8''''.
Claim 5
Dependent Claim 20 words
The apparatus of claim 1 wherein said tensioning means includes an endless chain having means thereon for gripping said threads.
Claim 6
Dependent Claim 70 words
The apparatus of claim 4 wherein the angle of the direction of travel of the endless chain of said tensioning means relative to the direction of travel of the flexible band of said guide means is such that said tensioning means draws said threads out of said guide means at an angle of approximately 90* with respect to the direction of travel of the flexible band of said guide means.

References Cited (Backward Citations)

US2000643A Cited
US2743596A Cited
US3606769A Cited
US3771330A Cited
US3703818A Cited
US3680332A Cited
US3636731A Cited
US3785175A Cited
US3797278A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-03 1979-05-05 1979-11-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-03 1983-05-05 1983-11-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-03 1987-05-05 1987-11-04 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag