ANDO Jan (Stepanska 8, Brno, 602 00, CZ)
| CLAIMS 1. Structure for arrangement of mutual position of at least two consequent loops in a row of knitted fabric created on one- or multi-system knitting machines, characterised by the fact that the thread (17) that follows the sinker loop (14.2) of the last loop (14) is put at first contra the direction of knitting on the needle loop (14.1) of the loop (14) and simultaneously on needle loops (13.1) of previous loops (13), and consequently, the thread (17) is put in the direction of knitting on needle loops (15.1) of the loops (15), to which are knitted the previous loops (13) and simultaneously on needle loop (16.1) of the loop (16), to which is knitted the last loop (14). |
Technical Field
The invention concerns improvement of the structure for arrangement of mutual position of at least two consequent loops in a row of knitted fabric.
Background Art
The mutual position of loops in a row of weft knitted fabric is set in fact by the length of sinker loops. In case that the length of sinker loops is constant, the mutual position of loops in the row is regular and the length of individual loops is equal, the appearance of the weft knitted fabric corresponds with aesthetic requirements. The aesthetic appearance of the weft knitted fabric may be harmed in case of breach of regularity, for example in the surroundings of terminal loops of rows or in case of creation of space objects, like for example the pouch of reverse-knitted heel of a sock or the wedge of panty-stockings as known from the file WOO2006CZ00028. In case that the terminal loops are not sufficiently secured or in case that the consequent rows of space objects are mutually sloping or even perpendicular, the loops usually get deformed, there develop increased eyes and possibly even holes in the knitted fabric. In this way, there is breached not only the appearance, but frequently even functionality of the knitted product.
In fact, there are known two different methods for securing the terminal loops of rows.
The first known method of securing the terminal loops is based on the principle that the free end of the thread following the terminal loop is fixed in the consequent loops of the previous row in the form of so called tuck loops. That means that the free end of the thread is partially tied in the knitted fabric. This is sufficient to avoid development of holes, but it is usually not possible to avoid enlargement of the terminal loop by this method. That is why this method is used only in cases when the terminal loop enlargement is acceptable and when there prevails the mechanical simplicity of the machinery.
The other known method is based on the fact that the loop is knitted in double. That means that the terminal loop is simultaneously knitted by two threads - the thread that will be excluded from knitting and simultaneously by the thread that was used for knitting the previous row. This method can reliably secure the terminal loop from ripping and enlargement, but it has even two disadvantages. The first disadvantage means that the mechanical equipment is more complicated than in previous case. The second disadvantage will appear mainly in case of creation of space objects, as described above. The cause of the disadvantage is based on the fact that needle loops of neighbour loops are not interconnected, so in case of strains of knitted fabric in locations where individual rows continue each other on sloping respectively perpendicular basis, the loops usually get deformed and so there appear non-aesthetic holes.
For arrangement of mutual position of at least two consequent loops in locations where individual rows of knitted fabric follow each other on sloping respectively perpendicular basis, there is nearly exclusively used the method of tuck loop embodiment. This method - similarly as in case of securing terminal loops in a row — allows deformation and enlargement of loops and consequently even appearance of aesthetic defects in knitted fabric.
Disclosure of the Invention
The task of the invention is to improve the structure for arrangement of mutual position of at least two consequent loops in a row of knitted fabric, mainly in locations, where - due to technological reasons - the regular structure of the weft knitted fabric is breached, e.g. in case of switching on or off the operation system or in locations where individual rows continue each other on sloping respectively perpendicular basis.
This is reached - to a significant extent - when the thread following the sinker loop of the terminal loop is put at first against the direction of knitting on the needle loop of the loop and simultaneously on needle loops of previous loops and consequently, the thread is put in the direction of knitting on needle loops of the loops that are connected by knitting with previous loops and simultaneously to the needle loop of the loop, to which is knitted the terminal loop.
The suggested invention - taking into consideration the current state of the art - shows it novel character mainly on the basis of the fact that the same thread is used for setting mutual position and distance of sinker loops of at least two consequent loops as well as for setting mutual position of their needle loops. Due to the new characteristics, the mutual position of at least two consequent loops in the row of knitted fabric is in fact independent on consequent rows and so there does not occur the generally know enlargement of loops and consequent development of non-aesthetic holes in knitted fabric. List of Figures in Drawings
The invention will be explained in detail using the drawings - due to better clearness of novelty, the figures show not only the invention, but also the current state of the art, while Figure 1 shows known version of structure for securing the terminal loop using the tuck loops, Figure 2 shows known version of structure for securing the terminal loop by duplication, Figure 3 shows known space structure when the rows of the knitted fabric are mutually perpendicular, Figure 4 shows securing of the terminal loop of the line according to suggested invention and Figure 5 shows securing of the pair of loops according to the invention in space structure, when the rows of the knitted fabric are mutually perpendicular.
Description of Preffered Embodiment
Figures 1 up to 3 are designed for explanation of novelty and differences compared to the existing state of the art. Figure 1 shows a sample of an incomplete row 1, terminated by the terminal loop 2. The sinker loop 2Λ is followed by the free end of the thread Z2_, where there are created the tuck loops Z3_ and 2A Knitting of the tuck loops Z3_ and IA. t0 the following row 3 means reaching of partial stabilisation of the terminal loop 2. Figure 2 shows securing of terminal loop by duplication. The incomplete row 4 is terminated by the terminal loop AΛ. The terminal loop 4J. is doubled / duplicated as it is simultaneously knitted from two threads - from the thread used for knitting of the incomplete row 4 and from the thread used for knitting the previous line 5. Due to that, the terminal loop AΛ is secured by the loop 5J 1 of the previous row 5 and the free end 4k2 of the thread coming out of the sinker loop 43 is not strained at all by any tension in the knitted fabric. Figure 3 shows the space structure where the mutually following rows are in fact perpendicular. The structure is known for example from the file WOO2006CZ00028. There are shown two triangular wedges 6 and 7, set up in relation to each other with their vertices. The vertex of the wedge 6 consists of loops 8 and 9, that are mutually secured by the tuck loops 8J 1 and 9.1. Similarly, the vertex of the wedge 7 is terminated by a pair of loops 10 and 11, mutually secured by tuck loops 10.1 and 11.1.
Figure 4 shows sample securing of a pair of loops - the last loop 14 and the previous loop 13 of the incomplete row 12. As shown, thread 17 that continues the sinker loop 14.2, is initially put counter the direction of knitting on the needle loop 14.1 of the last loop 14 and consequently to the needle loop 13.1 of the previous loop 13- Then, thread 17 in the direction of knitting is put on the needle loop 15.1 of the loop 15, to which is knitted the previous loop 13 and consequently to the needle loop 16.1 of the loop 16, to which is knitted the last loop 14. The described laying of the thread 17 to needle loops 13.1, 14.1, 15.1, and 16.1 may be even repeated - multiple. The above stated securing is not limited only to the pair of consequent loops, this procedure may be used for securing of three or possibly more consequent loops. In such a case it is necessary to put the thread on needle loops of several previous loops.
Figure 5 shows securing of two consequent loops in case of space object where individual rows of the knitted fabric are in fact perpendicular to each other. The object consists of two opposite wedges 18 and 19 of in fact triangular shape, with their vertices terminated by a pair of loops - the terminal loops 14 and previous loops 13_. Securing of the pairs of loops is performed analogically, in such a way that the thread 17^ continuing the sinker loop 14.2, is put initially against the direction of knitting to the needle loop 14.1 of the last loop 14 and then on the needle loop 13.1 of the previous loop 13. Then, thread 17 in the direction of knitting is put on the needle loop 15.1 of the loop 15, to which is knitted the previous loop 13 and consequently on the needle loop 16.1 of the loop 16, to which is knitted the last loop 14. Even in this case, putting the thread 17 on needle loops 13.1, 14.1, 15.1, and 16.1 may be repeated, multiple, while the securing is not limited only to the pair of consequent loops; this procedure may be used for securing of three respectively more consequent loops. In such a case it is necessary to put the thread on needle loops of several previous loops.
The main advantage of the proposed invention is based on the fact that the pair of consequent loops 13, 14, has its needle loops 13.1, 14Λ tightened by the same thread 17, used for creation of the above stated loops. The connection is in fact non-flexible and it does not allow change of distance between the two needle loops. Due to the above stated, there can not occur the well-known enlargement of the loops and development of non-aesthetic holes in the knitted fabric. More, the structure for securing the pair of consequent loops can be performed by already known mechanical device.
Industrial Applicability
The invention is designed for improvement of appearance and uniformity of weft knitted fabric in locations where it is necessary - due to technological reasons -to switch off and then on any knitting process from the knitting process and in cases where - while creating space objects like for example heel pouch or wedge of seamless panties - the individual rows of knitted fabric follow each other in sloping or perpendicular way.