US3906748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knitting machine
Assignee: INSTITUT fur TEXTILMASCHINEN
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Filing: 1974-07-12
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Granted: 1975-09-23
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Expires: 1994-07-12
Abstract
Abstract A warp knitting machine, particularly a stitching machine, having a reciprocating weft laying device is provided with devices for handling webs together with weft threads as the weft materials. The weft laying device is provided with means for guiding in a mutually parallel array weft material constituted of at least one set of weft threads and at least one web. As in applicant''s patented parent application, to assure that the weft materials, particularly the webs, do not twist when they are pushed onto needles of transport chains at the motion reversal points of the weft laying device, for operation in conjunction with the devices for pushing the webs onto the needles are provided devices for retaining the weft materials in untwisted configurations as they are pushed onto the needles.
Inventors
- 👤 Fery Heilmann
- 👤 Peter Edel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:35
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
361 words
In a warp knitting machine, particularly a stitching machine, comprising a series of pointed knitting needles which operate in a stitching zone, associated with the series of needles at least one laying bar, mounted on the laying bar a series of pointed eye needles, weft laying means located before the stitching zone for laying a continuous length of material in the weft direction, two transport means provided with hooks for receiving the weft material and located at the motion reversal points of the laying means, the laying means comprising means for guiding the weft material and two hold-down means for pressing the weft material into engagement with the hooks at the respective motion reversal points of the laying means, the improvement in which the laying means is adapted for laying at least one web together with at least one set of weft threads as the weft material, the weft material guide means comprises respective means defining a slot for guiding each web and respective means defining at least one opening for guiding each set of weft threads substantially parallel to the web, each of said web guiding means and weft threads guiding means being located above and in a plane transverse to the plane in which the webs are laid, respective means for guiding each web to the weft material guide means and respective means for guiding each set of weft threads to the weft material guide means and the laying means further comprises mounted for movement with each of the hold-down means a respective retaining means and means for moving each combination of hold-down means and retaining means between an inoperative position when the combination is not adjacent the hooks and in which the hold-down means and the retaining means are positioned above a plane in which the hooks are open and an operative position when the combination is adjacent the hooks and in which the hold-down means is positioned in or on the far side of a plane in which the hooks are open thereby to press the web into the hook openings and the retaining means engages the web between the weft material guide means and the hooks.
Claim 2
Dependent Claim
361 words
In a warp knitting machine, particularly a stitching machine, comprising a series of pointed knitting needles which operate in a stitching zone, associated with the series of needles at least one laying bar, mounted on the laying bar a series of pointed eye needles, weft laying means located before the stitching zone for laying a continuous length of material in the weft direction, two transport means provided with hooks for receiving the weft material and located at the motion reversal points of the laying means, the laying means comprising means for guiding the weft material and two hold-down means for pressing the weft material into engagement with the hooks at the respective motion reversal points of the laying means, the improvement in which the laying means is adapted for laying at least one web together with at least one set of weft threads as the weft material, the weft material guide means comprises respective means defining a slot for guiding each web and respective means defining at least one opening for guiding each set of weft threads substantially parallel to the web, each of said web guiding means and weft threads guiding means being located above and in a plane transverse to the plane in which the webs are laid, respective means for guiding each web to the weft material guide means and respective means for guiding each set of weft threads to the weft material guide means and the laying means further comprises mounted for movement with each of the hold-down means a respective retaining means and means for moving each combination of hold-down means and retaining means between an inoperative position when the combination is not adjacent the hooks and in which the hold-down means and the retaining means are positioned above a plane in which the hooks are open and an operative position when the combination is adjacent the hooks and in which the hold-down means is positioned in or on the far side of a plane in which the hooks are open thereby to press the web into the hook openings and the retaining means engages the web between the weft material guide means and the hooks.
Claim 3
Dependent Claim
47 words
Warp knitting machine according to claim 1, in the improvement in which the weft material guide means is constituted of means defining two parallel slots for guiding respective webs and, between said slots, means for guiding at least one set of weft threads parallel to the webs.
Claim 4
Dependent Claim
38 words
Warp knitting machine according to claim 2, in the improvement in which the retaining means comprise pointed members for pricking the webs when the combination is in operative position and the slots extend traversely to said pointed members.
Claim 5
Dependent Claim
55 words
Warp knitting machine according to claim 3, in the improvement in which the means for guiding each web to the weft material guide means comprises a roller and a bar adjacent and axially parallel to the roller and the weft threads guiding means comprises means defining a row of eyelets substantially parallel to the slots.
Claim 6
Dependent Claim
54 words
Warp knitting machine according to claim 2, in the improvement in which the weft material guide means is constituted of means defining a slot for guiding at least one web and on each side of said slot respective means for guiding a respective set of weft threads parallel to said at least one web.
Claim 7
Dependent Claim
40 words
Warp knitting machine according to claim 5, in the improvement in which the means for guiding each set of weft threads to the weft material guide means comprises at least one means defining a row of eyelets for the threads.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |