Textiles: knitting – United needle machines – Straight
Patent
1994-12-05
1996-08-13
Calvert, John J.
Textiles: knitting
United needle machines
Straight
66207, D04B 2726
Patent
active
055445004
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is directed to a knitting machine, in particular a crochet galloon machine having a plurality of knitting needles and a plurality of thread guides associated with the knitting needles and supported on a driveable guide bars.
There are a great many known knitting machines or crochet galloon machines of the type mentioned above, e.g., see DE-A-30 34 253. A problem occurring in these knitting machines consists in that the area above the knitting needles is relatively confined so that only a limited number of guide bars and corresponding thread guides can be arranged. Accordingly, the pattern possibilities in such a knitting machine are also limited.
The object of the present invention is to improve a knitting machine, in particular a crochet galloon machine, of the type mentioned above.
SUMMARY OF THE INVENTION
This object of the invention is achieved by providing a knitting machine in which the number of guide bars and corresponding thread guides which can be provided within the available space is increased in that there is at least one group of at least two guide bars which are arranged one on top of the other. This results in the decisive advantage that either the accessibility of the guide bars is improved given the same number of guide bars or a substantially greater number of guide bars can be provided within the same space. When the guide bars are arranged one above the other in groups of two, the number of guide bars and accordingly the number of possible patterns is doubled. If the groups are formed by three guide bars arranged one above the other, the number of guide bars is tripled.
As was mentioned above, the advantages of the invention are provided even if only some of the guide bars are combined in groups of guide bars arranged one above the other. However, combining a a majority of the guide bars in groups of guide bars arranged one above the other is especially advantageous.
In principle, it is possible for the thread guides of a group of guide bars to act on different offset lines or racking lines. Associating the guide bars of a group with the arms offset line is more advantageous in that adjustment work is substantially facilitated.
Advantageously, the guide bars of a group contact each other and, preferably, are guided reciprocally. The reciprocal guiding of the guide bars of a group results in an optimal and precise guidance of the guide bars and thread guides. Bending of the guide bars is reduced to a minimum by the reciprocal support. Accordingly, high knitting speeds of up to 2000 rpm can be achieved. The reciprocal guidance of the guide bars also obviates the need to secure the guide bars against relative rotation resulting in a simpler and accordingly more economical construction. The stability of the arrangement and its accessibility are further improved by forming the guide bars as upright guide bars having substantially flat profile. Although, there are a number of different possible constructions for the reciprocal guidance of the guide bars, the construction, in which one of the guide bar is provided with a web lying in the main plane of the guide bars and the other guide bar has a complimentary groove, is particularly advantageous.
There is also a variety of possible constructions and arrangements of the thread guides. For instance, the thread guides of the lower guide bar of one group can be attached from the bottom and the thread guides of the upper guide bar can be attached from the top. However, attaching the thread guides of both the lower and upper guide bars from the top is more advantageous, since all thread guides are accessible from the top in this case and access to the thread guides for adjustment and/or for the purpose of repairing the thread is made possible in the simplest manner and without restricting space.
The feeding of the yams or threads to the thread guides is substantially improved by a further development of the knitting machine according to the thread guides are formed as a clip having a head portion with a
REFERENCES:
patent: 3303670 (1967-02-01), Bassist
Calvert John J.
Textilma AG
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