US3665732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat warp knitting machines
Assignee: Wirkmaschinenbau Karl Marx Veb
•
Filing: 1970-08-06
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Granted: 1972-05-30
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Expires: 1990-08-06
Abstract
Abstract A flat warp knitting machine comprising two continuously driven endless transport chains provided with hooks, weft thread laying means, means for moving the weft thread laying means back and forth transversely to the transport chains for inserting weft threads alternately into the hooks of the two transport chains and means for moving the weft thread laying means at least partially in the direction of motion of the transport chains for the insertion of the weft threads into at least approximately opposite pairs of hooks so that the weft threads extend at least approximately at right angles to the transport chains.
Inventors
- 👤 Wolfgang Doring
- 👤 Bertram Frenzel
- 👤 Hans-Dieter Heutschel
- 👤 Heinz Kemter
- 👤 Werner Mickenautsch
- 👤 Harry Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:50
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
114 words
A flat warp knitting machine comprising two continuously driven endless transport chains provided with hooks, carrier means, weft yarn laying means carried by the carrier means, means for moving the carrier means and therewith the weft yarn laying means back and forth transversely to the transport chains for inserting weft yarns alternately into the hooks of the two transport chains and means for reciprocating the weft yarn laying means relative to the carrier means in the direction of motion of the transport chains for the insertion of the weft yarns into at least approximately opposite pairs of hooks so that the weft yarns extend at least approximately at right angles to the transport chains.
Claim 2
Dependent Claim
114 words
A flat warp knitting machine comprising two continuously driven endless transport chains provided with hooks, carrier means, weft yarn laying means carried by the carrier means, means for moving the carrier means and therewith the weft yarn laying means back and forth transversely to the transport chains for inserting weft yarns alternately into the hooks of the two transport chains and means for reciprocating the weft yarn laying means relative to the carrier means in the direction of motion of the transport chains for the insertion of the weft yarns into at least approximately opposite pairs of hooks so that the weft yarns extend at least approximately at right angles to the transport chains.
Claim 3
Dependent Claim
49 words
Flat warp knitting machine according to claim 1, further comprising guide rails each directed obliquely to the transport chains and pivotably mounted at its outer end, means defining an abutment adjacent each of the rails and means resiliently urging each of the rails against the abutment means adjacent thereto.
Claim 4
Dependent Claim
30 words
Flat warp knitting machine according to claim 1, further comprising two wedge pieces and means for alternately lifting the wedge pieces into the path of the weft yarn laying device.
Claim 5
Dependent Claim
46 words
Flat warp knitting machine according to claim 1, in which the weft yarn laying means comprises a cross slide and weft yarn guide means carried by the cross slide and the cross slide is carried by the carrier means for said reciprocating by said reciprocating means.
Claim 6
Dependent Claim
28 words
Flat warp knitting machine according to claim 4, in which the reciprocating means comprises a cross-bar by means of which the cross slide is movable in said reciprocation.
Claim 7
Dependent Claim
26 words
Flat warp knitting machine according to claim 5, in which the reciprocating means further comprises means for driving the cross-bar back and forth parallel to itself.
Claim 8
Dependent Claim
23 words
Flat warp knitting machine according to claim 6, further comprising two co-directional drive means operatively connected to the respective ends of the cross-bar.
Claim 9
Dependent Claim
21 words
Flat warp knitting machine according to claim 5, further comprising means pivoting the cross-bar at the longitudinal center of the cross-bar.
Claim 10
Dependent Claim
24 words
Flat warp knitting machine according to claim 8, further comprising a sleeve pivotably mounted on the cross-slide, the cross-bar being carried by the sleeve.
Claim 11
Dependent Claim
56 words
Flat warp knitting machine according to claim 9, further comprising two cross-heads, the cross-bar being mounted near its respective ends in the respective cross-heads, a pair of guide bars parallel to the transport chains, the guide bars carrying the respective cross-heads for movement along the guide bars, and means for driving the cross-heads in opposite directions.
Claim 12
Dependent Claim
57 words
Flat warp knitting machine according to claim 10, in which said driving means comprises means defining a double lever mounted for pivotal movement about a point intermediate its ends, means for pivotally moving said lever means in alternatingly opposite senses and means for transmitting movement from the respective ends of the lever means to the respective cross-heads.
Claim 13
Dependent Claim
49 words
Flat warp knitting machine according to claim 9, further comprising means connected to the cross-bar at opposite sides of the cross-slide, pivot means supporting said connecting means for pivoting about an axis parallel to the axis of pivoting of the sleeve, and means for oscillatingly driving the pivot means.
Claim 14
Dependent Claim
45 words
Flat warp knitting machine according to claim 1, in which the reciprocating means includes a cam and means operatively connecting the cam to the weft yarn laying means, the connecting means including spring means for effecting a return movement of the weft yarn laying means.
Claim 15
Dependent Claim
19 words
Flat warp knitting machine according to claim 1, in which the reciprocating means includes a pair of endless chains.
Claim 16
Dependent Claim
24 words
Flat warp knitting machine according to claim 1, in which the reciprocating means includes drive means comprising a double acting hydraulic or pneumatic piston.
Claim 17
Dependent Claim
45 words
Flat warp knitting machine according to claim 15, further comprising a second weft yarn laying means and means for moving the second weft yarn laying means back and forth transversely to the transport chains but not in the direction of movement of the transport chains.
Claim 18
Dependent Claim
37 words
Flat warp knitting machine according to claim 5, further comprising means for guiding the cross slide along the length of the cross-bar while the weft yarn laying means moves back and forth transversely to the transport chains.
References Cited (Backward Citations)
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Cited
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US3327501A
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US3446038A
Cited
US3523432A
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US3564872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |