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US 4,819,456 AGranted
Needle wrapping device for circular knitting machine
AssigneeJumberca, S.A.
InventorJose M. D. Guell
Life of this patent
Estimating the term…
Abstract
A circular knitting machine for introducing one or more independent wrap yarns to selected needles to form walewise effects in a fabric of jersey construction. The introduction is effected by yarn wrapper assemblies, each comprising a slidable, first member adapted for a radial movement relative to the circular knitting machine and a rotatable, second member pivotably mounted to the first member and having a yarn guide element. The first and second members of the yarn wrapper assembly are imparted with independent but simultaneous, synchronized movement whereby an individual yarn is introduced by the yarn guide element into the hooks of selectively raised needles in a non-circular arcuate path.
Claims19
A circular knitting machine comprising:
- (a) a plurality of needles:
- (b) a cylinder slotted to receive said plurality of needles:
- (c) means for actuating said plurality of needles:
- (d) yarn wrapper assembly means for introducing yarn into the hooks of selected needles, said wrapper assembly means including a first member adapted for radial movement relative to the cylinder, and a second, rotatable member pivotably mounted to said first member for rotatable movement relative thereto and having yarn feeding means at an outer extremity thereon;
- and
- (e) synchronized camming means, having dual, continuous and unbroken cam raceways integral in a common camplate member, for independently actuating said first and second members and for imparting cooperative movements thereto throughout substantially the full extents thereof, whereby superimposing the radial movement of the first member with the rotatable movement of the second member an individual yarn is introduced into the hooks of selected needles.
3 more elements
A circular knitting machine comprising:
- (a) a plurality of needles:
- (b) a cylinder with vertical slots to receive said plurality of needles moveable with respect to said slots;
- (c) means for actuating said plurality of needles;
- (d) a dial member mounted inwardly of said cylinder and including a plurality of radial slots;
- (e) yarn wrapper assembly means for introducing yarn into the hooks of needles selectively raised to a yarn receiving level, said wrapper assembly means including a first membre slidable in a a cooperating radial slot of said dial member for radial movement relative to the cylinder, and a second rotatable member pivotably mounted to said first member for rotatable movement relative thereto and having yarn feeding means at an outer extremity thereon;
- and
- (f) independent and dual closed track camming means integral in a common camplate member and in synchronized cooperation for actuating said first and second members and for imparting cooperative movements thereto throughout substantially the full extents thereof, whereby an individual yarn is introduced into the hooks of the selectively raised needles.
4 more elements
A circular knitting machine comprising:
- (a) a plurality of needles;
- (b) a cylinder with vertical slots to receive said plurality of needles moveable with respect to said slots;
- (c) means for actuating said pluarlity of needles;
- (d) a dial member mounted inwardly of said cylinder and including a plurality of radial slots;
- (e) yarn wrapper assembly means for introducing yarn into the hooks of needles selectively raised to a yarn receiving level, said wrapper assembly means including a first member slidable in a cooperating radial slot of said dial member for radial movement relative to the cylinder, and a second rotatable member pivotably mounted to said first member for rotatable movement relative thereto and having yarn feeding means at an outer extremity thereon;
- and
- (f) synchronized camming means, having independent inner and outer cam raceways operative in a camplate member mounted inwardly of the plurality of needles, for actuating said first and second members, said cam raceways being continous and unbroken throughout the full extents thereof so the cooperative movements are imparted to said first and second members, whereby an individual yarn is introduced by said yarn feeding means into the hooks of the selectively raised needles in a closed loop, unbroken non-circular arcuate path.
4 more elements
A circular knitting machine comprising:
- (a) a plurality of needles:
- (b) a cylinder with vertical slots to receive said plurality of needles moveable with respect to said slots;
- (c) means for actuating said plurality of needles;
- (d) a dial member mounted inwardly of said cylinder and including a plurality of radial slots;
- (e) a yarn wrapper assembly means for introducing yarn into the hooks of needles slectively raised to a yarn receiving level, said wrapping assembly means including a first member slidable in a cooperating radial slot of said dial member between inner and outer radial positions for radial movements relative to the cylinder, and a second rotatable member pivotably mounted to said first member for movement between different rotatable relative thereto and having yarn feeding means in an outer extremity thereon;
- and
- (f) synchronized independent dual am raceway means jointly operative in a camplate member mounted inwardly of the plurality of needles for actuating said first and second members, said dual cam raceway means having continous unbroken camming surfaces throughout their operative extents to impart cooperative movements to said first and second members, a first of said cam raceway means actuating said first slidable member between said inner and outer radial positions and a second of said cam raceway means actuating said second rotatable member between said different rotatable positions, whereby an individual yarn is introduced by said yarn feeding means into the hooks of the selectively raised needles in a non-circular arcuate path commencing from a start position inwardly of the needles, continuing in the arcuate path inwardly of the needles, cutting across the needles, then moving through an arcuate path outwardly of the needles, and then again cutting across the needles back to the start position, thereby introducing the wrap yarn into the hooks of the selectively raised needles.
4 more elements
Dependencies are inferred from the claim text.