Textiles: knitting – United needle machines – Straight
Patent
1988-05-12
1990-04-24
Feldbaum, Ronald
Textiles: knitting
United needle machines
Straight
D04B 2300
Patent
active
049189476
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a weft knitting machine for producing the warm knit. The weft knitting machine includes knitting needles guided reciprocatingly transverse to a knockover bit, warp thread guides assigned to the needles, and at least one reciprocating filling thread guide transverse to the needles.
2. Description of the Prior Art
Warp knit fabrics of the type mentioned at the beginning are known in many forms. Such fabrics can be produced only in limited fineness, since the knitting needles cannot be as thin and cannot be placed as closely together as might be desired. Both the filling thread guide and the warp thread guide repaire a certain distance between the knitting needles to be able to lay a filling thread or the warp threads.
The object of the invention is to design a warp knit fabric of the type mentioned at the beginning and a weft knitting machine for producing the said fabric so that the production of a fine warp knit fabric is possible.
SUMMARY OF THE INVENTION
Pursuant to the invention, the object is accomplished by the knitting needles being uniformly distributed onto two knitting-needle bars lying on the same side of the goods and are arranged alternately to one another and capable of being alternatingly driven, wherein each knitting-needle bar is assigned a set of warp thread guides. Owing to the fact that the stitches of every second warp thread stitch wale are displaced one partial stitch with respect to the stitches of every first warp thread stitch wale, the stitches of a row are not all produced at the same time, but in two stages, two sets of knitting needles being required for the purpose, which needles are brought into action out of phase, i.e., one after the other. The production of a course is thus divided into two stages, so that virtually twice as many stitches per course can be provided as was hitherto the case with the finest warp knit fabrics. While previously the limit of stitches was 8 to 10 stitches per cm, now up to 20 switches per cm of width of the warp knit fabric can be provided. The warp knit fabric is distinguished by an exceptional fineness, which substantially improves the appearance and the feel of the fabric.
For the weft knitting machine for producing the warp knit fabric, a variety of possible designs exists. Thus the knitting-needle bars may be arranged in tandem. However, a design according to which the knitting-needle bars are superposed is more advantageous, since then the knitting machines can have essentially the same length. Then the knitting needles may preferably be clamped. Clamping of the knitting needles from behind is alternatively possible. In this case, a design according to which the knitting-needles have dovetail-shaped shoulders which are held in corresponding clamping devices of the knitting-needle bars is particularly of advantage.
As a rule, the knitting needles of both needle bars are designed identical. However, when yarns of unlike properties are to be processed with the knitting needles of the individual needle bars, a design according to which the knitting-needles of one of the knitting-needle bars are designed more slender than the knitting-needles of the other needle bars is alternatively advantageous.
The tips of the knitting needles of the two needle bars may conceivably lie in unlike planes. However, it is more advantageous if at least the tips of the knitting needles of the two needle bars lie in a common plane. At the same time, it is preferable when the knitting needles are guided by arranging the knitting-needles of two knitting-needle bars on a common knockover bit having comb-like guide recesses. But guiding by arranging the knitting needles of the two knitting-needle bars on a common flat knockover bit without lateral guidance is alternatively possible, whereby in particular the lateral distance apart of adjacent knitting needles can be kept especially small.
The knitting-needle bars may be out of phase by an angle other than 180.degree.. However, it is adva
REFERENCES:
patent: 3879964 (1975-04-01), Pascual
patent: 3898820 (1975-08-01), Brand
Weber, Die Wirkerei und Stickerei, Melliand Textilberichte KG.
Feldbaum Ronald
Textilma AG
LandOfFree
Knitting machine for producing warp knit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Knitting machine for producing warp knit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Knitting machine for producing warp knit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-27191