US3733856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat knitting machine
Assignee: Shima Idea Center Co Ltd
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Filing: 1971-06-16
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Granted: 1973-05-22
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Expires: 1991-06-16
Abstract
Abstract A flat knitting machine wherein, besides horizontally movable yarn feeders which are also provided in the conventional flat knitting machine, there are provided above the back or front needle bed vertically movable yarn feeders which feed weft knitting yarns to optional or desired transversely divided portions of optional distance in desired optional courses. Owing to the provisions of said vertically movable yarn feeders, there may be produced not only conventional weft knitted constructions or fabrics such as plain stitch, rib stitch, cardigan stitch or the like and RAHBEN stitch, milano rib or the like, but also various knitted constructions or fabrics having constructions similar to warp knitted ones and variously combinated constructions of such knitted constructions.
Inventors
- 👤 M Shima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
D; D04; D04B; D04B7/00; D04B7/04; D04B1/00; D04B1/10; D04B1/102; D04B1/104; D04B15/00; D04B15/10; D04B15/12; D04B15/32; D04B15/36; D04B15/362; D04B15/365; D04B15/38; D04B15/54; D04B15/56; D04B39/00; D04B39/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
243 words
A flat knitting machine comprising V-type front and back needle beds, a plurality of knitting needles slidably received by the beds, a carriage having cams which are moved horizontally into left and right directions of the machine for advancing and retreating the needles, at least one horizontally movable yarn feeder, each yarn feeder having yarn guides positioned above the top opening between the beds and which may be moved into left and right directions of the machine together with said carriage, said feeders feeding weft yarns to the needles on one or both of the needle beds when the feeders are moved into left or right direction, at least one vertically movable yarn feeder having feeding pipes which are arranged above one of the needle beds with desired intervals therebetween, cam means for moving each of the vertically movable yarn feeders so as to move the free ends of said feeding pipes downwardly and upwardly toward or away from the associated needle bed near the top opening, racking means for moving each of the vertically movable yarn feeders into left and right directions relatively to the associated needle bed by two or more desired optional pitches so that each of the feeding pipes of said vertically movable yarn feeders feeds a weft yarn to two or more needles on the associated needle bed in one course when the feeding pipes are moved vertically by said cam means and horizontally by said racking means.
Claim 2
Dependent Claim
243 words
A flat knitting machine comprising V-type front and back needle beds, a plurality of knitting needles slidably received by the beds, a carriage having cams which are moved horizontally into left and right directions of the machine for advancing and retreating the needles, at least one horizontally movable yarn feeder, each yarn feeder having yarn guides positioned above the top opening between the beds and which may be moved into left and right directions of the machine together with said carriage, said feeders feeding weft yarns to the needles on one or both of the needle beds when the feeders are moved into left or right direction, at least one vertically movable yarn feeder having feeding pipes which are arranged above one of the needle beds with desired intervals therebetween, cam means for moving each of the vertically movable yarn feeders so as to move the free ends of said feeding pipes downwardly and upwardly toward or away from the associated needle bed near the top opening, racking means for moving each of the vertically movable yarn feeders into left and right directions relatively to the associated needle bed by two or more desired optional pitches so that each of the feeding pipes of said vertically movable yarn feeders feeds a weft yarn to two or more needles on the associated needle bed in one course when the feeding pipes are moved vertically by said cam means and horizontally by said racking means.
Claim 3
Dependent Claim
57 words
The flat knitting machine as claimed in claim 1 wherein the cams of the carriage include a knitting cam which is movable into the feeding direction Of said vertically movable yarn feeders after the feeding by the vertically movable yarn feeders whereby knitting operations with the yarns fed by the vertically movable yarn feeders are carried out.
Claim 4
Dependent Claim
24 words
The flat knitting machine as claimed in claim 1 wherein the back needle bed is movable upwardly and downwardly along the sloped direction thereof.
Claim 5
Dependent Claim
116 words
The flat knitting machine as claimed in claim 1 including a further horizontally movable yarn feeder having a yarn guide, the free end of the yarn guide of said further feeder being positioned at a lower level than the yarn guide of the other horizontally movable yarn feeders so that said free end of the yarn guide of said further feeder may be passed through a position below the clearing position of the knitting needles on the front or back needle bed and above the lowered feeding pipes of said vertically movable yarn feeders at the point of time when said knitting needles have been lowered to the knitting position during the motion of the carriage.
Claim 6
Dependent Claim
137 words
The knitting machine as claimed in claim 1 wherein the vertically movable yarn feeder includes an elongated feeder beam having a face provided with a plurality of transverse grooves therein, a longitudinally extending dovetail groove, and a second longitudinally extending groove basing the dovetail groove, the feeding pipes of said vertically movable yarn feeder being received by desired optional grooves selected from the transverse grooves of said feeder beam with equal intervals therebetween along the front and back direction, a plate member of resilient material inserted into the second longitudinal groove and a locking member inserted into the dovetail groove for pressing the feeding pipes against the plate member whereby said feeding pipes may be displaced while remaining supported within the transverse grooves to change or control the projection of the feeding pipes from the feeding beam.
Claim 7
Dependent Claim
50 words
The flat knitting machine as claimed in claim 1 wherein there are provided a plurality of vertically movable yarn feeders and each of said vertically movable feeders is connected to a racking device in such a manner that each of said vertically movable feeders is racked independently by desired pitches.
Claim 8
Dependent Claim
52 words
The flat knitting machine as claimed in claim 1 wherein the needle bed below the vertically movable yarn feeder is provided with tracks receiving knitting needles having beards whereby construction or fabric knitted by the front and back knitting needles may be transferred to the knitting needles of the other needle bed.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |