US3834189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knitting machine
Assignee: Oerlikon Textile GmbH and Co KG
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Filing: 1973-03-16
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Granted: 1974-09-10
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Expires: 1993-03-16
Abstract
Abstract A warp knitting machine, particularly of the Raschel type, is provided with a device for inserting a weft thread into the knitted loops wherein a crank-shaped thread laying device is provided with a thread guide which is operable to undo the twist which occurs during the revolving movement of the thread laying device, thereby making it possible to draw, for example, two weft threads, which may be of different color or composition, simultaneously from the weft thread supply reels. A weft thread storer is provided which consists preferably of two storage discs facing each other and which is movable in the direction toward the knitting needles. The warp knitting machines can produce knitted goods whose appearance and properties correspond to those of woven goods, but where the knitted product can be manufactured at substantially higher production speeds than the woven product.
Inventors
- 👤 H Kamp
- 👤 W Wilms
- 👤 V Reichardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:04
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
91 words
A warp knitting machine in which a weft thread is inserted into knitted loops, comprising knitting elements, a crankshaped thread-laying device, a weft thread storer movable in a direction towards said knitting elements and disposed between the latter and said thread-laying device, mounting means rotatably mounting said crank-shaped thread-laying device, said mounting means having channels for feeding weft threads to said thread-laying device, and thread guide means carried on said thread-laying device and including means for undoing the twist of the weft thread produced during one revolution of the thread-laying device.
Claim 2
Dependent Claim
91 words
A warp knitting machine in which a weft thread is inserted into knitted loops, comprising knitting elements, a crankshaped thread-laying device, a weft thread storer movable in a direction towards said knitting elements and disposed between the latter and said thread-laying device, mounting means rotatably mounting said crank-shaped thread-laying device, said mounting means having channels for feeding weft threads to said thread-laying device, and thread guide means carried on said thread-laying device and including means for undoing the twist of the weft thread produced during one revolution of the thread-laying device.
Claim 3
Dependent Claim
32 words
A warp knitting machine according to claim 1 wherein said mounting means comprises a shaft, said channels for feeding said weft threads being disposed in side by side relationship in said shaft.
Claim 4
Dependent Claim
43 words
A warp knitting machine according to claim 2 wherein the axis of said shaft is coincident with the axis of rotation of said thread-laying device, said shaft being secured against rotation, and said channels being disposed parallel to the axis of said shaft.
Claim 5
Dependent Claim
57 words
A warp knitting machine according to claim 2 wherein at least two spaced channels are provided in said shaft, and separation means are provided on the end of said shaft defining the exit opening of said channels, said separation means causing one weft thread to pass over the other weft thread during rotation of said thread-laying device.
Claim 6
Dependent Claim
37 words
A warp knitting machine according to claim 4 wherein said separation means comprises protrusion on the exit end of said shaft, said protrusion being disposed between the two exit openings of said at least two spaced channels.
Claim 7
Dependent Claim
15 words
A warp knitting machine according to claim 5 wherein said protrusion has an arcuate configuration.
Claim 8
Dependent Claim
45 words
A warp knitting machine according to Claim 1 wherein said thread guide means comprises thread-guiding gears, means driving said thread guiding gears for rotation in opposite direction, each of said thread guiding gears having a pair of guide eyes through which said weft threads pass.
Claim 9
Dependent Claim
35 words
A warp knitting machine according to claim 7 wherein said thread-guiding gears mesh with one another, said guide eyes comprising channels in said gears extending generally parallel to the axis of rotation of each gears.
Claim 10
Dependent Claim
50 words
A warp knitting machine according to claim 8 wherein two spaced guide eyes are provided on one of said thread-guiding gears, and protruding means are provided on the side of said one gear for causing one weft thread to pass over the other weft thread during rotation of said gears.
Claim 11
Dependent Claim
53 words
A warp knitting machine according to claim 1 wherein said weft thread storer comprises holding members disposed adjacent both edges of the web and actuating means operable to engage the weft threads as the latter pass from said thread guide means and to place said weft threads over more than one holding member.
Claim 12
Dependent Claim
29 words
A warp knitting machine according to claim 10 wherein said actuating means comprises transfer tongues, said transfer tongues each having contacting surfaces thereon for keeping the weft threads separated.
Claim 13
Dependent Claim
41 words
A warp knitting machine according to claim 10 wherein said actuating means includes transfer tongues and an operating mechanism operable to rotate and tilt each transfer tongue towards the holding members and in an opposite direction away from said holding members.
Claim 14
Dependent Claim
46 words
A warp knitting machine according to claim 1 wherein said crank-shaped thread-laying device comprises an elongated crank arm, said thread guide means comprising a pair of thread-guiding gears rotatably mounted on said crank arm about axes perpendicular to the axis of rotation of said crank arm.
Claim 15
Dependent Claim
22 words
A warp knitting machine according to claim 13 wherein drive means are provided on said crank arm for rotating said thread-guiding gears.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |